(Manual) Toyota Corolla 2004 Wiring Manual

FOREWORD
This wiring diagram manual has been prepared to provide information on the electrical system of the 2004 COROLLA.

Applicable models: ZZE130 Series

For service specifications and repair procedures of the above models other than those listed in this manual, refer to the following manuals;

Manual Name Y 2004 COROLLA Repair Manual Volume 1 Volume 2 Y 2004 COROLLA New Car Features Supplement

Pub. No. RM1037U1 RM1037U2 NCF249U

All information in this manual is based on the latest product information at the time of publication. However, specifications and procedures are subject to change without notice.

NOTICE When handling supplemental restraint system components (removal, installation or inspection, etc.), always follow the direction given in the repair manuals listed above to prevent accidents and supplemental restraint system malfunction.

2004 COROLLA ELECTRICAL WIRING DIAGRAM
Section Code Page

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . A . . . . HOW TO USE THIS MANUAL . . . . . . . . . . . . . . B . . . . TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . C . . . . ABBREVIATIONS . . . . . . . . . . . . . . . . . . . . . . . . . D . . . . GLOSSARY OF TERMS AND SYMBOLS . . . . E . . . . RELAY LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . F . . . . ELECTRICAL WIRING ROUTING . . . . . . . . . . . G . . . . SYSTEM CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . H . . . . GROUND POINT . . . . . . . . . . . . . . . . . . . . . . . . . . . I . . . . POWER SOURCE (Current Flow Chart) . . . . . J . . . . CONNECTOR LIST . . . . . . . . . . . . . . . . . . . . . . . . K . . . . PART NUMBER OF CONNECTORS . . . . . . . . . L . . . . OVERALL ELECTRICAL WIRING DIAGRAM . M . . . .

2 3 12 17 18 20 32 47 194 198 204 210 214

Y2003 All rights reserved. This book may not be reproduced or copied, in whole or in part, without the written permission of Toyota Motor Corporation.

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2004 COROLLA (EWD533U)

A INTRODUCTION
This manual consists of the following 13 sections: No. INDEX A INTRODUCTION B HOW TO USE THIS MANUAL TROUBLE– SHOOTING ABBREVIATIONS GLOSSARY OF TERMS AND SYMBOLS RELAY LOCATIONS ELECTRICAL WIRING ROUTING INDEX Brief explanation of each section. Instructions on how to use this manual. Section Index of the contents of this manual. Description

C D

Describes the basic inspection procedures for electrical circuits. Defines the abbreviations used in this manual.

E

Defines the symbols and functions of major parts.

F

Shows position of the Electronic Control Unit, Relays, Relay Block, etc. This section is closely related to the system circuit. Describes position of Parts Connectors, Splice points, Ground points, etc. This section is closely related to the system circuit. Index of the system circuits. Electrical circuits of each system are shown from the power supply through ground points. Wiring connections and their positions are shown and classified by code according to the connection method. (Refer to the section, ”How to use this manual”). The ”System Outline” and ”Service Hints” useful for troubleshooting are also contained in this section. Shows ground positions of all parts described in this manual. Describes power distribution from the power supply to various electrical loads. Describes the form of the connectors for the parts appeared in this book. This section is closely related to the system circuit. Indicates the part number of the connectors used in this manual.

G

H SYSTEM CIRCUITS

I J

GROUND POINT POWER SOURCE (Current Flow Chart) CONNECTOR LIST PART NUMBER OF CONNECTORS OVERALL ELECTRICAL WIRING DIAGRAM

K

L

M

Provides circuit diagrams showing the circuit connections.

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2004 COROLLA (EWD533U)

HOW TO USE THIS MANUAL B This manual provides information on the electrical circuits installed on vehicles by dividing them into a circuit for each system. The actual wiring of each system circuit is shown from the point where the power source is received from the battery as far as each ground point. (All circuit diagrams are shown with the switches in the OFF position.) When troubleshooting any problem, first understand the operation of the circuit where the problem was detected (see System Circuit section), the power source supplying power to that circuit (see Power Source section), and the ground points (see Ground Point section). See the System Outline to understand the circuit operation. When the circuit operation is understood, begin troubleshooting of the problem circuit to isolate the cause. Use Relay Location and Electrical Wiring Routing sections to find each part, junction block and wiring harness connectors, wiring harness and wiring harness connectors, splice points, and ground points of each system circuit. Internal wiring for each junction block is also provided for better understanding of connection within a junction block. Wiring related to each system is indicated in each system circuit by arrows (from__, to__). When overall connections are required, see the Overall Electrical Wiring Diagram at the end of this manual.

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2004 COROLLA (EWD533U)

B HOW TO USE THIS MANUAL
[A]
∗ The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.

Stop Light
From Power Source System (See Page 66)

15A STOP

7.5A GAUGE 4 IB R L

2

[B]

1

3 IB 1 IB

[C]
W R R (W/G) L (S/D) 2 IB

[G]

2 S6 Stop Light SW 14 IE1

[E]

Rear Lights

R L 4 C7 Combination Meter 13 L (S/D) 8 L4 Light Failure Sensor 1 11

[D]

1

G W

7

2

[H]
1 G R BV1

G R

B18

[I]

[J]

G R

G R

(Shielded) R6 Rear Combination Light LH

4 Stop

R7 Rear Combination Light RH

3 Stop

G B

2

[K]
1

H17 High Mounted Stop Light

3

6

W B

W B

1 W B BV1

B18 W B

BO

[L]

4

50

[M]
2004 COROLLA (EWD533U)

W B

BL

W B

Y G 4

ABS ECU

G W

G W I5

[F]

B
[A] : System Title [B] : Indicates a Relay Block. No shading is used and only the Relay Block No. is shown to distinguish it from the J/B
Example: Indicates Relay Block No.1

[H] : Indicates the wiring color. Wire colors are indicated by an alphabetical code. B L P = Black = Blue = Pink W = White V Y = Violet = Yellow G = Green BR = Brown SB = Sky Blue LG = Light Green GR = Gray

R = Red O = Orange

[C] : ( ) is used to indicate different wiring and connector, etc. when the vehicle model, engine type, or specification is different. [D] : Indicates related system. [E] : Indicates the wiring harness and wiring harness connector. The wiring harness with male terminal is shown with arrows ( ). Outside numerals are pin numbers.

The first letter indicates the basic wire color and the second letter indicates the color of the stripe.
Example: L–Y

L (Blue)

Y (Yellow)

[I]
Female Male ( )

: Indicates a wiring Splice Point (Codes are ”E” for the Engine Room, ”I” for the Instrument Panel, and ”B” for the Body).

The first letter of the code for each wiring harness and wiring harness connector(s) indicates the component’s location, e.g, ”E” for the Engine Compartment, ”I” for the Instrument Panel and Surrounding area, and ”B” for the Body and Surrounding area. When more than one code has the first and second letters in common, followed by numbers (e.g, IH1, IH2), this indicates the same type of wiring harness and wiring harness connector. [F] : Represents a part (all parts are shown in sky blue). The code is the same as the code used in parts position. [G] : Junction Block (The number in the circle is the J/B No. and the connector code is shown beside it). Junction Blocks are shaded to clearly separate them from other parts.

The Location of splice Point I 5 is indicated by the shaded section. [J] : Indicates a shielded cable.

[K] : Indicates the pin number of the connector. The numbering system is different for female and male connectors.
Example: Numbered in order from upper left to lower right Numbered in order from upper right to lower left

Example:
3C indicates that it is inside Junction Block No.3

Female

Male

[L] : Indicates a ground point. The first letter of the code for each ground point(s) indicates the component’s location, e.g, ”E” for the Engine Compartment, ”I” for the Instrument Panel and Surrounding area, and ”B” for the Body and Surrounding area. [M] : Page No.

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2004 COROLLA (EWD533U)

B HOW TO USE THIS MANUAL
[N]
System Outline Current is applied at all times through the STOP fuse to TERMINAL 2 of the stop light SW. When the ignition SW is turned on, current flows from the GAUGE fuse to TERMINAL 8 of the light failure sensor, and also flows through the rear lights warning light to TERMINAL 4 of the light failure sensor. Stop Light Disconnection Warning When the ignition SW is turned on and the brake pedal is pressed (Stop light SW on), if the stop light circuit is open, the current flowing from TERMINAL 7 of the light failure sensor to TERMINALS 1, 2 changes, so the light failure sensor detects the disconnection and the warning circuit of the light failure sensor is activated. As a result, the current flows from TERMINAL 4 of the light failure sensor to TERMINAL 11 to GROUND and turns the rear lights warning light on. By pressing the brake pedal, the current flowing to TERMINAL 8 of the light failure sensor keeps the warning circuit on and holds the warning light on until the ignition SW is turned off.

[O]

Service Hints S6 Stop Light SW 2–1 : Closed with the brake pedal depressed L4 Light Failure Sensor 1, 2, 7–Ground : Approx. 12 volts with the stop light SW on 4, 8–Ground : Approx. 12 volts with the ignition SW at ON position 11–Ground : Always continuity

[P]
Code C7 H17

: Parts Location
See Page 34 36 Code L4 R6 36 37 See Page Code R7 S6 37 35 See Page

[Q]
Code

: Relay Blocks
See Page 18 Relay Blocks (Relay Block Location) R/B No.1 (Instrument Panel Brace LH)

1

[R]
Code

: Junction Block and Wire Harness Connector
See Page 20 22 Junction Block and Wire Harness (Connector Location) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and J/B No.3 (Instrument Panel Brace LH)

IB 3C

[S]
Code

: Connector Joining Wire Harness and Wire Harness
See Page 42 50 Joining Wire Harness and Wire Harness (Connector Location) Floor Wire and Instrument Panel Wire (Left Kick Panel) Luggage Room Wire and Floor Wire (Luggage Room Left)

IE1 BV1

[T]
Code

: Ground Points
See Page 50 50 Ground Points Location Under the Left Center Pillar Back Panel Center

BL BO

[U]
Code

: Splice Points
See Page 44 Wire Harness with Splice Points Cowl Wire Code See Page 50 Wire Harness with Splice Points Luggage Room Wire

I5

B18

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2004 COROLLA (EWD533U)

B
[N] : Explains the system outline. [O] : Indicates values or explains the function for reference during troubleshooting. [P] : Indicates the reference page showing the position on the vehicle of the parts in the system circuit. Example : Part ”L4” (Light Failure Sensor) is on page 36 of the manual. ∗ The letter in the code is from the first letter of the part, and the number indicates its order in parts starting with that letter.

[Q] : Indicates the reference page showing the position on the vehicle of Relay Block Connectors in the system circuit. Example : Connector ”1” is described on page 18 of this manual and is installed on the left side of the instrument panel. [R] : Indicates the reference page showing the position on the vehicle of J/B and Wire Harness in the system circuit. Example : Connector ”3C” connects the Instrument Panel Wire and J/B No.3. It is described on page 22 of this manual, and is installed on the instrument panel left side. [S] : Indicates the reference page describing the wiring harness and wiring harness connector (the female wiring harness is shown first, followed by the male wiring harness). Example : Connector ”IE1” connects the floor wire (female) and Instrument panel wire (male). It is described on page 42 of this manual, and is installed on the left side kick panel. [T] : Indicates the reference page showing the position of the ground points on the vehicle. Example : Ground point ”BO” is described on page 50 of this manual and is installed on the back panel center. [U] : Indicates the reference page showing the position of the splice points on the vehicle. Example : Splice point ”I5” is on the Cowl Wire Harness and is described on page 44 of this manual.

2004 COROLLA (EWD533U)

Á Á

Example : L 4

Parts is 4th in order Light Failure Sensor

7

B HOW TO USE THIS MANUAL
The ground points circuit diagram shows the connections from all major parts to the respective ground points. When troubleshooting a faulty ground point, checking the system circuits which use a common ground may help you identify the problem ground quickly. The relationship between ground points ( EA , IB and IC shown below) can also be checked this way.

I GROUND POINT
W–B FAN MAIN Relay 5 W–B FAN MAIN Relay 5 W–B A/C Relay No.2 5 W–B A/C Relay No.3 5 W–B Radiator Fan Motor W–B Headlight Cleaner Relay W–B Headlight LH W–B Headlight RH W–B Front Turn Signal Light RH W–B Front Clearance Light RH W–B Front Turn Signal Light LH W–B Front Clearance Light LH W–B Door Lock Control SW W–B Door Courtesy SW RH W–B Door Lock Motor RH W–B Door Lock Control Relay B4 B4 W–B B4 W–B 2 IA1 W–B I4 E4 W–B E6 W–B E5 W–B Brake Fluid Level SW E4 W–B E4 W–B Front Fog Light LH E5 W–B Front Fog Light RH E4 7 3C 1 3D 3 3F 13 3G 5 3E 6 3E W–B I5 W–B W–B I5 W–B I5 15 W–B W–B B5 ID1 W–B B5 EA W–B W–B Blower Resistor W–B Idle–Up SW W–B A/C Amplifier I4 W–B 8 W–B I8 IB1 W–B B5 W–B B5 W–B Door Lock Motor LH W–B (4A–GZE) 4 BR Radio and Player W–B HEATER Relay BR Auto Antenna Motor 4 5 BA1 BR 4 W–B I3 BR I3 BR Fuel Sender BR Combination Meter 4 4 4 W–B I5 I5 W–B 3 IC3 W–B Woofer Speaker Amplifier BR Combination Meter Fuel Control SW Door Lock Control SW Door Courtesy SW LH Unlock Warning SW W–B I2 W–B I2 Combination SW W–B W–B Combination SW W–B I2 W–B Cruise Control ECU W–B Remote Control Mirror SW W–B Turn Signal Flasher W–B Defogger SW W–B E2 E3 E3 J1 Junction Connector 7 3B W–B Combination Meter W–B E3 Clock A A E3 O/D Main SW W–B A A W–B I6 W–B Parking Brake SW Cigarette Lighter W–B A I6 W–B Blower SW W–B Blower Motor W–B A W–B A/C Control Assembly

10 EA2 W–B

W–B

Power Window Master SW

Power Window Control Relay

W–B

W–B

4 W–B

IB

IC

∗

The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.

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2004 COROLLA (EWD533U)

BR

B
The ”Current Flow Chart” section, describes which parts each power source (fuses, fusible links, and circuit breakers) transmits current to. In the Power Source circuit diagram, the conditions when battery power is supplied to each system are explained. Since all System Circuit diagrams start from the power source, the power source system must be fully understood.

J POWER SOURCE (Current Flow Chart)
The chart below shows the route by which current flows from the battery to each electrical source (Fusible Link, Circuit Breaker, Fuse, etc.) and other parts.
10A ECU–B Short Pin 15A EFI Battery 30A AM2 Starter 2 S2 10A HORN 100A ALT 6 60A ABS 5 Fusible Link Block 6 10A HAZARD 2 20A RADIO NO.1 2 7.5A DOME 2

Engine Room R/B (See Page 20)
Fuse System ABS ABS and Traction Control Cruise Control Electronically Controlled Transmission Multiplex Communication System Cigarette Lighter Combination Meter Headlight Interior Light Key Reminder and Seat Belt Warning Light Auto Turn Off Theft Deterrent and Door Lock Control Page 194 187 180 166 210 214 230 112 122

20A

STOP

10A

DOME

Power Source
40A DOOR LOCK CB W E6 W W Battery 3 EA2 1 EA1 W B 50A MAIN B E7 W B 2 2 W 7 EB1 I2 W W I2 I2 W 1 B E7 2 15A HAZ–RADIO 2 B INJECTION Relay 1 3 I8 Ignition SW 4 G–W 1 3 1 7.5A AM2 2 W W–R 6 EB1 W–R W 2 1 TAIL Relay W 1 W 1.25B FL MAIN W 1 1 2 W–L 1

W 1

7.5A DOME 1

R

B–O 2 B E7 2

W–B 2 B–W 2

8 AM2

4 AM1

2

4

1 IG2 ACC IG1

G

B 2 B

STARTER Relay 1 3

15A TAIL 1

G

B

W–B 2 B–W 2

3

2

E7 B

2

2

4

B–Y 1

20A DEFOG 1

W–R

B–Y 1

15A RAD CIG 1

P–L

∗

The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.

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2004 COROLLA (EWD533U)

B HOW TO USE THIS MANUAL
K CONNECTOR LIST
I14
Dark Gray

I15
Gray

[A]

I16
Black
A A

J1

J2

A A A A

1

2

1

2

1 2

A B B D D A A B CC CD D

6 7 8

J3

[B]

J4
A A A A A A A A

K1
Dark Gray

K2

L1

A B B DD A A B CC CDD

1 1 2

1 2

L2
Gray
1

L3

L4
Black

M1
1 2 3 4 5 6 7 8 9 101112

M2

M3

[C]

1 2

1 2

1 2 3 45 6 78

1 2 3 4

M4

N1
Gray

[D]

N2
Gray

O1
Black

O2
Dark Gray

1 2 3

1 7

5

6

2 3 4 8 9 10

1

2

1

1

[A] : Indicates connector to be connected to a part. (The numeral indicates the pin No.) [B] : Junction Connector Indicates a connector which is connected to a short terminal.
Junction Connector

Junction connector in this manual include a short terminal which is connected to a number of wire harnesses. Always perform inspection with the short terminal installed. (When installing the wire harnesses, the harnesses can be connected to any position within the short terminal grouping. Accordingly, in other vehicles, the same position in the short terminal may be connected to a wire harness from a different part.) Wire harness sharing the same short terminal grouping have the same color.
Same Color Short Terminal

[C] : Parts Code The first letter of the code is taken from the first letter of part, and the numbers indicates its order in parts which start with the same letter. [D] : Connector Color Connectors not indicated are milky white in color.

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2004 COROLLA (EWD533U)

B
L PART NUMBER OF CONNECTORS
Code A1 A2 A3 A4 A5 A6 A7 [A] A8 A9 A10 A11 A12 A13 Part Name A/C Ambient Temp. Sensor A/C Condenser Fan Motor A/C Condenser Fan Relay A/C Condenser Fan Resistor A/C Magnetic Clutch A/T Oil Temp. Sensor ABS Actuator [B] ABS Actuator ABS Speed Sensor Front LH ABS Speed Sensor Front RH Airbag Sensor Front LH 90980–11856 Airbag Sensor Front RH Airbag Squib 90980–11194 90980–11070 D15 D16 D17 Door Courtesy SW Rear RH Door Key Lock and Unlock SW LH 90980–11170 Door Key Lock and Unlock SW RH Part Number 90980–11070 90980–11237 90980–10940 90980–10928 90980–11271 90980–11413 90980–11151 [C] 90980–11009 90980–10941 90980–11002 Code D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 Part Name Diode (Courtesy) Diode (Interior Light) Diode (Moon Roof) Door Lock Control Relay Door Lock Control SW LH 90980–11148 Door Lock Control SW RH Door Courtesy SW LH 90980–11097 Door Courtesy SW RH Door Courtesy SW Front LH Door Courtesy SW Front RH 90980–11156 Door Courtesy SW Rear LH Part Number 90980–11608 90980–10962 90980–11608 90980–10848

[A] : Part Code [B] : Part Name [C] : Part Number Toyota Part Number are indicated. Not all of the above part numbers of the connector are established for the supply.

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2004 COROLLA (EWD533U)

C TROUBLESHOOTING
To Ignition SW IG Terminal

VOLTAGE CHECK
(a) Establish conditions in which voltage is present at the check point. Example: [A] – Ignition SW on [B] – Ignition SW and SW 1 on [C] – Ignition SW, SW 1 and Relay on (SW 2 off) (b) Using a voltmeter, connect the negative lead to a good ground point or negative battery terminal, and the positive lead to the connector or component terminal. This check can be done with a test light instead of a voltmeter.

Fuse [A]

SW 1 [B]

Voltmeter

Relay [C]

SW 2

Solenoid

CONTINUITY AND RESISTANCE CHECK
(a) Disconnect the battery terminal or wire so there is no voltage between the check points. (b) Contact the two leads of an ohmmeter to each of the check points.

Ohmmeter

SW

Ohmmeter

If the circuit has diodes, reverse the two leads and check again. When contacting the negative lead to the diode positive side and the positive lead to the negative side, there should be continuity. When contacting the two leads in reverse, there should be no continuity.

Diode

(c) Use a volt/ohmmeter with high impedance (10 kΩ/V minimum) for troubleshooting of the electrical circuit.
Digital Type Analog Type

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2004 COROLLA (EWD533U)

C
To Ignition SW IG Terminal

FINDING A SHORT CIRCUIT
(a) Remove the blown fuse and disconnect all loads of the fuse. (b) Connect a test light in place of the fuse. (c) Establish conditions in which the test light comes on. Example: [A] – Ignition SW on [B] – Ignition SW and SW 1 on [C] – Ignition SW, SW 1 and Relay on (Connect the Relay) and SW 2 off (or Disconnect SW 2) (d) Disconnect and reconnect the connectors while watching the test light. The short lies between the connector where the test light stays lit and the connector where the light goes out. (e) Find the exact location of the short by lightly shaking the problem wire along the body.

Test Light

Fuse Case Short [A]

SW 1 Short [B] Disconnect Disconnect Light Relay Short [C]

CAUTION:
(a) Do not open the cover or the case of the ECU unless absolutely necessary. (If the IC terminals are touched, the IC may be destroyed by static electricity.) (b) When replacing the internal mechanism (ECU part) of the digital meter, be careful that no part of your body or clothing comes in contact with the terminals of leads from the IC, etc. of the replacement part (spare part).

Disconnect SW 2 Solenoid

DISCONNECTION OF MALE AND FEMALE CONNECTORS
To pull apart the connectors, pull on the connector itself, not the wire harness. HINT : Check to see what kind of connector you are disconnecting before pulling apart.

Pull Up

Pull Up

Press Down

Press Down

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2004 COROLLA (EWD533U)

C TROUBLESHOOTING
Reference:

HOW TO REPLACE TERMINAL (with terminal retainer or secondary locking device)
1. PREPARE THE SPECIAL TOOL 1 HINT : To remove the terminal from the connector, please construct and use the special tool or like object shown on the left. 2. DISCONNECT CONNECTOR

10 3

1
Example: (Case 1)

0.2
(mm)

Up

Tool

3. DISENGAGE THE SECONDARY LOCKING DEVICE OR TERMINAL RETAINER. (a) Locking device must be disengaged before the terminal locking clip can be released and the terminal removed from the connector. (b) Use a special tool or the terminal pick to unlock the secondary locking device or terminal retainer. NOTICE: Do not remove the terminal retainer from connector body.

Terminal Retainer

[A]
Terminal Retainer

For Non–Waterproof Type Connector HINT : The needle insertion position varies according to the connector’s shape (number of terminals etc.), so check the position before inserting it. ”Case 1” Raise the terminal retainer up to the temporary lock position.

[Retainer at Full Lock Position]

Stopper

Terminal Retainer

[Retainer at Temporary Lock Position]

Example: (Case 2)

Secondary Locking Device

”Case 2” Open the secondary locking device.

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2004 COROLLA (EWD533U)

C
Tool Tab

Tab

Example: (Case 1)

Terminal Retainer

[B]
Tool

For Waterproof Type Connector HINT : Terminal retainer color is different according to connector body. Example: Terminal Retainer Black or White Black or White Gray or White : Connector Body : Gray : Dark Gray : Black

Tool [Male]

Access Hole ( Mark)

[Female]

”Case 1” Type where terminal retainer is pulled up to the temporary lock position (Pull Type). Insert the special tool into the terminal retainer access hole (YMark) and pull the terminal retainer up to the temporary lock position.
Retainer at Full Lock Position

HINT : The needle insertion position varies according to the connector’s shape (Number of terminals etc.), so check the position before inserting it.

Retainer at Temporary Lock Position [Male] [Female]

Example: (Case 2)

Terminal Retainer

”Case 2” Type which cannot be pulled as far as Power Lock insert the tool straight into the access hole of terminal retainer as shown.

Tool Press Down [Female]

Tool

[Male]

Press Down

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2004 COROLLA (EWD533U)

C TROUBLESHOOTING
Push the terminal retainer down to the temporary lock position.

Retainer at Full Lock Position

Retainer at Temporary Lock Position [Male]

[Female]

Locking Lug

(c) Release the locking lug from terminal and pull the terminal out from rear.

Tool

4. INSTALL TERMINAL TO CONNECTOR (a) Insert the terminal. HINT: 1. Make sure the terminal is positioned correctly. 2. Insert the terminal until the locking lug locks firmly. 3. Insert the terminal with terminal retainer in the temporary lock position.

(b) Push the secondary locking device or terminal retainer in to the full lock position. 5. CONNECT CONNECTOR

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2004 COROLLA (EWD533U)

ABBREVIATIONS D
ABBREVIATIONS
The following abbreviations are used in this manual. A/C A/T ABS ECU ESA EVAP IAC IC J/B LED LH M/T O/D R/B RH SFI SRS SW TEMP. TVIP VSV VVT w/ w/o = = = = = = = = = = = = = = = = = = = = = = = = Air Conditioning Automatic Transaxle Anti–Lock Brake System Electronic Control Unit Electronic Spark Advance Evaporative Emission Idle Air Control Integrated Circuit Junction Block Light Emitting Diode Left–Hand Manual Transaxle Overdrive Relay Block Right–Hand Sequential Multiport Fuel Injection Supplemental Restraint System Switch Temperature TOYOTA Vehicle Intrusion Protection Vacuum Switching Valve Variable Valve Timing With Without

∗ The titles given inside the components are the names of the terminals (terminal codes) and are not treated as being abbreviations.

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2004 COROLLA (EWD533U)

E GLOSSARY OF TERMS AND SYMBOLS
BATTERY Stores chemical energy and converts it into electrical energy. Provides DC current for the auto’s various electrical circuits. CAPACITOR (Condenser) A small holding unit for temporary storage of electrical voltage. GROUND The point at which wiring attaches to the Body, thereby providing a return path for an electrical circuit; without a ground, current cannot flow.

HEADLIGHTS Current flow causes a headlight 1. SINGLE filament to heat up and emit light. A FILAMENT headlight may have either a single (1) filament or a double (2) filament

CIGARETTE LIGHTER An electric resistance heating element.

2. DOUBLE FILAMENT

CIRCUIT BREAKER Basically a reusable fuse, a circuit breaker will heat and open if too much current flows through it. Some units automatically reset when cool, others must be manually reset. DIODE A semiconductor which allows current flow in only one direction.

HORN An electric device which sounds a loud audible signal.

IGNITION COIL Converts low–voltage DC current into high–voltage ignition current for firing the spark plugs.

DIODE, ZENER
A diode which allows current flow in one direction but blocks reverse flow only up to a specific voltage. Above that potential, it passes the excess voltage. This acts as a simple voltage regulator.

LIGHT Current flow through a filament causes the filament to heat up and emit light.

PHOTODIODE The photodiode is a semiconductor which controls the current flow according to the amount of light.

LED (LIGHT EMITTING DIODE) Upon current flow, these diodes emit light without producing the heat of a comparable light.

DISTRIBUTOR, IIA Channels high–voltage current from the ignition coil to the individual spark plugs.

METER, ANALOG Current flow activates a magnetic coil which causes a needle to move, thereby providing a relative display against a background calibration. METER, DIGITAL Current flow activates one or many LED’s, LCD’s, or fluorescent displays, which provide a relative or digital display. MOTOR A power unit which converts electrical energy into mechanical energy, especially rotary motion.

FUSE
A thin metal strip which burns through when too much current flows through it, thereby stopping current flow and protecting a circuit from damage.
FUEL

FUSIBLE LINK
(for Medium Current Fuse) A heavy–gauge wire placed in high amperage circuits which burns through on overloads, thereby protecting the circuit. The numbers indicate the crosssection surface area of the wires.

M

(for High Current Fuse or Fusible Link)

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2004 COROLLA (EWD533U)

E
RELAY Basically, an electrically operated 1. NORMALLY switch which may be normally CLOSED closed (1) or open (2). Current flow through a small coil creates a magnetic field which either opens or closes an attached switch. 2. NORMALLY OPEN SPEAKER An electromechanical device which creates sound waves from current flow.

SWITCH, MANUAL 1. NORMALLY OPEN Opens and closes circuits, thereby i it th b stopping (1) or allowing (2) current flow.

RELAY, DOUBLE THROW A relay which passes current through one set of contacts or the other.

2. NORMALLY CLOSED

RESISTOR An electrical component with a fixed resistance, placed in a circuit to reduce voltage to a specific value.

SWITCH, DOUBLE THROW A switch which continuously passes current through one set of contacts or the other.

RESISTOR, TAPPED A resistor which supplies two or more different non adjustable resistance values.

SWITCH, IGNITION A key operated switch with several positions which allows various circuits, particularly the primary ignition circuit, to become operational.

RESISTOR, VARIABLE or RHEOSTAT A controllable resistor with a variable rate of resistance. Also called a potentiometer or rheostat. SENSOR (Thermistor) A resistor which varies its resistance with temperature. SWITCH, WIPER PARK Automatically returns wipers to the stop position when the wiper switch is turned off.

SENSOR, SPEED Uses magnetic impulses to open and close a switch to create a signal for activation of other components.
(Reed Switch Type)

TRANSISTOR A solidstate device typically used as an electronic relay; stops or passes current depending on the voltage applied at ”base”.

SHORT PIN Used to provide an unbroken connection within a junction block.

WIRES Wires are always drawn as (1) NOT straight lines on wiring CONNECTED diagrams. Crossed wires (1) without a black dot at the junction are j not joined; tj i d crossed wires (2) with a black dot or octagonal ( ) (2) SPLICED mark at the junction are spliced (joined) connections.

SOLENOID An electromagnetic coil which forms a magnetic field when current flows, to move a plunger, etc.

19
2004 COROLLA (EWD533U)

F RELAY LOCATIONS [Engine Compartment]

[Body]

20
2004 COROLLA (EWD533U)

F [Instrument Panel]

21
2004 COROLLA (EWD533U)

F RELAY LOCATIONS
1

: Engine Room R/B : Engine Room J/B

Engine Compartment Left (See Page 20)

22
2004 COROLLA (EWD533U)

Memo

23
2004 COROLLA (EWD533U)

F RELAY LOCATIONS
: Instrument Panel J/B Lower Finish Panel (See Page 21)

24
2004 COROLLA (EWD533U)

F

25
2004 COROLLA (EWD533U)

F RELAY LOCATIONS [Instrument Panel J/B Inner Circuit]

26
2004 COROLLA (EWD533U)

F

27
2004 COROLLA (EWD533U)

F RELAY LOCATIONS
3

: RH R/B : RH J/B

Right Side of the Instrument Panel Reinforcement (See Page 21)

28
2004 COROLLA (EWD533U)

F [RH J/B Inner Circuit]

29
2004 COROLLA (EWD533U)

F RELAY LOCATIONS
: Center J/B Behind the Combination Meter (See Page 21)

30
2004 COROLLA (EWD533U)

F [Center J/B Inner Circuit]

31
2004 COROLLA (EWD533U)

G ELECTRICAL WIRING ROUTING
Position of Parts in Engine Compartment

A 1 A/C Magnetic Clutch A 2 A/T Shift Lever Position SW Back–Up Light SW Park/Neutral Position SW A 3 ABS Speed Sensor Front LH A 4 ABS Speed Sensor Front RH A 5 Airbag Sensor Front LH A 6 Airbag Sensor Front RH A 7 Ambient Temp. Sensor B 1 Back–Up Light SW B 2 Brake Fluid Level Warning SW C C C C 1 2 3 4 Camshaft Position Sensor Camshaft Timing Oil Control Valve (VVT) Crankshaft Position Sensor Cruise Control Actuator

F 1 Front Fog Light LH F 2 Front Fog Light RH F 3 Front Parking Light LH Front Turn Signal Light LH F 4 Front Parking Light RH Front Turn Signal Light RH F 5 Front Washer Motor F 6 Front Wiper Motor G 1 Generator G 2 Generator H H H H H H 1 2 3 4 5 6 Headlight LH (High) Headlight LH (Low) Headlight RH (High) Headlight RH (Low) Heated Oxygen Sensor (Bank 1 Sensor 1) Horn

E 1 Electronically Controlled Transmission Solenoid E 2 Engine Coolant Temp. Sensor

32
2004 COROLLA (EWD533U)

G
Position of Parts in Engine Compartment

I I I I I I I I I

1 2 3 4 5 6 7 8 9

Idle Air Control Valve Ignition Coil and Igniter No.1 Ignition Coil and Igniter No.2 Ignition Coil and Igniter No.3 Ignition Coil and Igniter No.4 Injector No.1 Injector No.2 Injector No.3 Injector No.4

P 1 Power Steering Oil Pressure SW P 2 Pressure SW R 1 Radiator Fan Motor R 2 Radiator Fan Resistor S 1 Skid Control ECU with Actuator S 2 Starter S 3 Starter T 1 Throttle Position Sensor V 1 Vehicle Speed Sensor (Combination Meter) V 2 VSV (Canister Closed Valve) V 3 VSV (EVAP) W 1 Washer Level Sensor

J 1 Junction Connector K 1 Knock Sensor M 1 Mass Air Flow Meter N 1 Noise Filter (Ignition) O 1 Oil Pressure SW

33
2004 COROLLA (EWD533U)

G ELECTRICAL WIRING ROUTING
Position of Parts in Instrument Panel

A 8 A/C SW Air Inlet Control SW Defroster Mode Detection SW A 10 A/T Shift Lever Illumination O/D Main SW A 11 Air Inlet Control Servo Motor A 12 Airbag Sensor Assembly A 13 Airbag Sensor Assembly A 14 Airbag Sensor Assembly A 15 Airbag Squib (Front Passenger Airbag Assembly) A 16 Airbag Squib (Steering Wheel Pad) A 17 Antenna Amplifier A 18 Automatic Light Control Sensor B B B B Blower Motor Blower Resistor Blower SW Buckle SW LH Seat Position Sensor B 7 Buckle SW RH Occupant Detection Sensor 3 4 5 6

C 5 Cigarette Lighter Power Outlet (Front) C 6 Cigarette Lighter Illumination C 7 Clock C 8 Clutch Start SW C 9 Combination Meter C10 Combination SW C 11 Combination SW C12 Combination SW C13 Cruise Control Clutch SW C14 Cruise Control ECU D 1 Data Link Connector 3 D 2 Daytime Running Light Relay E E E E 3 4 5 6 Engine Control Module Engine Control Module Engine Control Module Engine Control Module

34
2004 COROLLA (EWD533U)

G
Position of Parts in Instrument Panel

F 7 Front Passenger Seat Belt Warning Light G 3 Glass Breakage Sensor ECU H 7 Hazard SW H 8 Heated Oxygen Sensor (Bank 1 Sensor 2) I 10 Ignition SW I 11 Integration Relay J J J J J J 2 3 4 5 6 7 Junction Connector Junction Connector Junction Connector Junction Connector Junction Connector Junction Connector

R R R R R S S S S S S

3 4 5 6 7 4 5 6 7 8 9

Radio and Player Radio and Player Rear Window Defogger SW Remote Control Mirror SW Rheostat Security Indicator Shift Lock Control ECU Side Airbag Squib LH Side Airbag Squib RH Starter Cut Relay Stop Light SW

T 2 Turn Signal Flasher Relay T 3 TVIP ECU U 1 Unlock Warning SW

P 3 Parking Brake SW P 4 Power Outlet (Rear)

35
2004 COROLLA (EWD533U)

G ELECTRICAL WIRING ROUTING
Position of Parts in Body

A 19 ABS Speed Sensor Rear LH A 20 ABS Speed Sensor Rear RH D D D D D D 3 4 5 6 7 8 Door Control Receiver Door Courtesy SW Front LH Door Courtesy SW Front RH Door Courtesy SW Rear LH Door Courtesy SW Rear RH Door Key Lock and Unlock SW Front LH Door Lock Motor Front LH Door Unlock Detection SW Front LH Door Key Lock and Unlock SW Front RH Door Lock Motor Front RH Door Unlock Detection SW Front RH Door Lock Control SW Front LH Door Lock Control SW Front LH Power Window Master SW Door Lock Control SW Front RH Door Lock Motor Rear LH Door Lock Motor Rear RH

F 8 Front Door Speaker LH F 9 Front Door Speaker RH F 10 Fuel Pump Fuel Sender H 9 High Mounted Stop Light I 12 Inner Mirror Personal Light I 13 Interior Light J 8 Junction Connector J 9 Junction Connector J 10 Junction Connector L L L L 1 2 3 4 License Plate Light LH License Plate Light RH Luggage Compartment Light Luggage Compartment Light SW

D 9

D10 D 11 D12 D13 D14

36
2004 COROLLA (EWD533U)

G
Position of Parts in Body

M 2 Moon Roof Control Relay and SW Personal Light M 3 Moon Roof Motor and Limit SW N 2 Noise Filter (Rear Window Defogger) P 5 P 6 P 7 P 8 P 9 P 10 P 11 P 12 P 13 Power Window Control SW Front RH Power Window Control SW Rear LH Power Window Control SW Rear RH Power Window Motor Front LH Power Window Motor Front RH Power Window Motor Rear LH Power Window Motor Rear RH Pretensioner LH Pretensioner RH

R 9 R10 R 11 R12 R13 R14 R15 R16 R17 R18

Rear Combination Light LH Rear Combination Light LH Rear Combination Light RH Rear Combination Light RH Rear Speaker LH Rear Speaker RH Rear Window Defogger Rear Window Defogger Remote Control Mirror LH Remote Control Mirror RH

S 10 Side Airbag Sensor LH S 11 Side Airbag Sensor RH T 4 Tweeter LH T 5 Tweeter RH V 4 Vapor Pressure Sensor V 5 VSV (Vapor Pressure Sensor)

37
2004 COROLLA (EWD533U)

G ELECTRICAL WIRING ROUTING
: Location of Connector Joining Wire Harness and Wire Harness : Location of Ground Points

: Location of Splice Points

38
2004 COROLLA (EWD533U)

G Connector Joining Wire Harness and Wire Harness
EA1

1 2 3 4 5 6 7 8 9 10

5 4 3 2 1 10 9 8 7 6

Code EA1

Joining Wire Harness and Wire Harness (Connector Location) Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)

39
2004 COROLLA (EWD533U)

G ELECTRICAL WIRING ROUTING
: Location of Connector Joining Wire Harness and Wire Harness

: Location of Ground Points

40
2004 COROLLA (EWD533U)

G Connector Joining Wire Harness and Wire Harness

Code IA1 IA2 IA4 IA5 IA6 IB1 IC1 IC2 IC3

Joining Wire Harness and Wire Harness (Connector Location)

Engine Room Main Wire and Instrument Panel Wire ( g (Left Side of the Instrument Panel Reinforcement) )

Engine Room Main Wire and Floor Wire (Cowl Side Panel LH) Front Door LH Wire and Instrument Panel Wire (Left Kick Panel) ( )

41
2004 COROLLA (EWD533U)

G ELECTRICAL WIRING ROUTING
: Location of Connector Joining Wire Harness and Wire Harness

: Location of Splice Points

42
2004 COROLLA (EWD533U)

G Connector Joining Wire Harness and Wire Harness

Code ID1 ID2 IE1 IF1 IG1 IH1 II1 II2 IJ1 IJ2 IK1

Joining Wire Harness and Wire Harness (Connector Location) Instrument Panel Wire and Floor Wire (Left Kick Panel) Instrument Panel Wire and Instrument Panel No.4 Wire (Behind the Combination Meter) Console Box Wire and Instrument Panel Wire (Under the Instrument Panel Center) Instrument Panel Wire and Instrument Panel No.3 Wire (Front Side of the Parking Brake Lever) Instrument Panel Wire and A/C Sub Wire (Left Upper Side of the Blower Unit) Engine Wire and Instrument Panel Wire (Blower Unit RH) Front Door RH Wire and Instrument Panel Wire (Right Kick Panel) Roof Wire and Instrument Panel Wire (Left Side of the Instrument Panel)

43
2004 COROLLA (EWD533U)

G ELECTRICAL WIRING ROUTING
: Location of Connector Joining Wire Harness and Wire Harness : Location of Ground Points

: Location of Splice Points

44
2004 COROLLA (EWD533U)

G Connector Joining Wire Harness and Wire Harness
BA1 BB1 BC1
Gray

12 3 456 78

3 21 8 7 654

12 3 456 7 8

3 21 87 6 54

1 2

2 1

BD1

BE1

BF1

1 2

2 1

1

2

2

1

1

2

2

1

Code BA1 BB1 BC1 BD1 BE1 BF1

Joining Wire Harness and Wire Harness (Connector Location) Rear Door LH Wire and Floor Wire (Left Center Pillar) Rear Door RH Wire and Instrument Panel Wire (Right Center Pillar) Skid Control Sensor Wire LH and Floor Wire (Quarter Wheel House LH) Skid Control Sensor Wire RH and Floor Wire (Quarter Wheel House RH) Speaker Tweeter LH Wire and Front Door LH Wire (Inside of the Front Door LH) Speaker Tweeter RH Wire and Front Door RH Wire (Inside of the Front Door RH)

45
2004 COROLLA (EWD533U)

Memo

46
2004 COROLLA (EWD533U)

SYSTEM CIRCUITS H

2004 COROLLA ELECTRICAL WIRING DIAGRAM SYSTEM CIRCUITS
ABS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Automatic Glare–Resistant EC Mirror with Compass . . . . . . . . . . . . . . . . . . . Back–Up Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cigarette Lighter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Combination Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electronically Controlled Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Engine Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fog Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Headlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Interior Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Key Reminder Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Light Reminder Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Moon Roof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Radiator Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Radio and Player . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rear Window Defogger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Remote Control Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Seat Belt Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Shift Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stop Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Taillight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Turn Signal and Hazard Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TVIP System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wiper and Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wireless Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 154 188 112 96 56 104 106 180 148 118 142 58 76 70 192 102 52 86 90 168 168 140 108 48 114 186 176 174 110 172 166 159 52 94 82 78 134 98 126

47
2004 COROLLA (EWD533U)

Power Source

1 1B

B–G

1

B

G2 Generator

1

2

1

R

30A ABS NO. 1

1 1D

W

W

1 1 2 1 L 30A POWER 40A ABS NO. 2

2

1

2

1

B–W

12 IF 25A AM1

W

30A RDI FAN 7. 5A OBD 1 2 1 G B

15A FOG

10A ECU–B

15A P/POINT 1 1A 1 2 1 1C W 1 IB 15A STOP 100A ALT

1

2

1

W

15A TAIL

5A ALT–S

25A DOOR 2 R–W

1

1

15A EFI B

1

2

1

B–R

2 IA4

B–R

3 IM 15A AM2

6 IM

B

30A MAIN

1

2

1

G–W 1 1 2 1 R–Y

10A HAZARD

R

1 1 FL MAIN 2. 0L 2 1 R

3 HEAD Relay

5

1

R–B

40A HEAD MAIN

1

2

1

B–W

R–B

10A HORN Battery 1 1 2 1 L–W R–B 3 5 1 W–R R

1 15A DOME

1

2

1

DIMMER Relay

48
2004 COROLLA (EWD533U)

1

2

5

3 10A M–HTR/DEF I–UP

30A DEFOG

1 DEF Relay

2

W

1 IA 1 2 2 IM

HTR Relay R–W 3 2 1 3 L–W

B–W

3

5 4

3

ACC 3 L–R W 1 AM1 IG1 2 B–Y

6 IF

40A HEATER

15A CIG W–B

3

3

Noise Filter 1 B 5 AM2 IG2 6 B–W ST2 4 R 2

5 IM 10A A/C 5 3 10A GAUGE 2 IF 1 IG1 Relay 2 10A ECU–IG

I10 Ignition SW

15A WASHER

25A WIPER

4 IF

10 IH

1

2

1

R–W

10A HEAD LH LWR W–B W–B W–B

R–B

1

1

2

1

R

10A HEAD RH LWR

1

2

1

R–W

10A HEAD LH UPR

R

1

1

2

1

R A J6 Junction Connector A A J7 Junction Connector

10A HEAD RH UPR IE

IG

B

49
2004 COROLLA (EWD533U)

Power Source
Service Hints HEAD Relay 3–5 : Closed with the light control SW at Head position or the dimmer SW at Flash position : Closed with the engine running and the parking brake lever is released (Parking brake SW off) I10 Ignition SW 1–3 : Closed with the ignition SW at ACC or ON position 1–2 : Closed with the ignition SW at ON or ST position 5–6 : Closed with the ignition SW at ON or ST position 5–4 : Closed with the ignition SW at ST position : Parts Location
Code G2 I10 32 35 See Page Code J6 J7 35 35 See Page Code See Page

: Relay Blocks
Code 1 3 22 28 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left) RH R/B (Right Side of the Instrument Panel Reinforcement)

: Junction Block and Wire Harness Connector
Code IA IB IF IH IM 1A 1B 1C 1D 25 25 24 22 22 Engine Wire and Engine Room J/B (Engine Compartment Left) Engine Room Main Wire and Engine Room J/B (Engine Compartment Left) See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)

Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) ( )

: Connector Joining Wire Harness and Wire Harness
Code IA4 40 See Page Joining Wire Harness and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)

: Ground Points
Code IE IG 40 40 See Page Ground Points Location Behind the Combination Meter Right Kick Panel

50
2004 COROLLA (EWD533U)

Memo

51
2004 COROLLA (EWD533U)

Starting and Ignition

5 AM2

IG2 6 ST2 4

B–W R

B–W

I7 (M/T) (A/T)

B

I10 Ignition SW 6 IM

R

R

R 3 IA2 12 II2 (A/T) R (A/T)

15A AM2 (M/T) (A/T)

E B R R

3 3 IM B–R

2 A A ST Relay R R (A/T) (A/T) A A

J 2(A), J 3(B) Junction Connector 6 (A/T) J 2(A) Junction Connector G A B A2 Park/Neutral Position SW

5 2 IA4 1 IM

1 11 IL B–W (*1) B–R W–B (*1) C8 Clutch Start SW 1 4 IF 9 P N

3 B–R (* 2) B B

1 T3 TVIP ECU

21 SRLY 2

S8 Starter Cut Relay

4

2

1

(M/T)

B

(* 1)

B

B

(* 1)

30A MAIN (* 1 M/T) (* 2 M/T)

(* 1)

1

1 1A

7

II1

B (*1) B

I9

B (* 1) I2 B (*2)

(* 2)

B

B

B

B

G A

G A

B

FL MAIN 2. 0L

1 B S 2(A), S 3(B) Starter M

B–R

1 A

Battery

W–B

A

(A/T)

B

B

(* 2)

B

10 IA5

11

II2

(A/T)

2

B

(M/T)

J6 Junction Connector

B (A/T) B

IE

(M/T)

52
2004 COROLLA (EWD533U)

* 1 : w/ TVIP System * 2 : w/o TVIP System B–W B–W 5 IL 12 IC (A/T) B–W 10 EA1 B–W B–W R

E3

E3

B–W

E3

B–W

B–W

B–W

B–W

B–W

1 N1 Noise Filter (Ignition)

1 +B

I2 Ignition Coil and Igniter No. 1

1 +B

I3 Ignition Coil and Igniter No. 2

1 +B

I4 Ignition Coil and Igniter No. 3

B–W 1 +B GND 4 W–B IGF 2 L–Y

I5 Ignition Coil and Igniter No. 4

IGT 3 R–L

IGF 2 L–Y

GND 4 W–B

IGT 3 Y–G

IGF 2 L–Y

GND 4 W–B

IGT 3 GR

IGF 2 L–Y

IGT 3 W

GND 4 W–B E2 W–B W–B EC

W–B

E2

W–B

E2 J 2(A), J 3(B) Junction Connector

W–B

H B

F A L–Y

F A L–Y

F A L–Y

F A L–Y

(A/T)

Y–G

R–L

L–Y

GR

8 B NSW

8 A IGT1

9 A IGT2

10 A IGT3

23 A IGF

11 A IGT4

STA 9 B B (A/T) B (M/T) E 3(A), E 4(B) Engine Control Module

W

R

53
2004 COROLLA (EWD533U)

Starting and Ignition
Service Hints I10 Ignition SW 5–4 : Closed with the ignition SW at ST position 5–6 : Closed with the ignition SW at ON or ST position S2 (A), S3 (B) Starter Points closed with the shift lever at P or N position and the ignition SW at ST position (A/T) Points closed with the clutch pedal depressed and the ignition SW at ST position (M/T) : Parts Location
Code A2 C8 E3 E4 I2 I3 A B 32 34 34 34 33 33 J2 J3 J6 See Page Code I4 I5 I10 A B 33 33 35 35 35 35 S2 S3 S8 T3 See Page Code N1 A B 33 33 33 35 35 See Page

: Relay Blocks
Code 1 22 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector
Code IC IF IL IM 1A 25 25 24 22 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) ( ) Engine Wire and Engine Room J/B (Engine Compartment Left) See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness
Code EA1 IA2 IA4 IA5 II1 II2 42 Engine Wire and Instrument Panel Wire (Blower Unit RH) 40 Engine Room Main Wire and Instrument Panel Wire ( g (Left Side of the Instrument Panel Reinforcement) ) 38 See Page Joining Wire Harness and Wire Harness (Connector Location) Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)

: Ground Points
Code EC IE 38 40 See Page Ground Points Location Left Side of the Cylinder Head Behind the Combination Meter

: Splice Points
Code E2 E3 I2 38 42 See Page Wire Harness with Splice Points Engine Wire Instrument Panel Wire Code I7 I9 42 See Page Wire Harness with Splice Points Instrument Panel Wire

54
2004 COROLLA (EWD533U)

Memo

55
2004 COROLLA (EWD533U)

Charging

B–G W B–W From Power Source System (See Page 48) 5 5 AM2 IG2 6 ST2 10A GAUGE B I10 Ignition SW 2 IG 6 IM R–W 32 8 IK B–O IL

22 3B

3 IM B–G B–R W

20 3B R–W 31 Y

2

IA4 B–R

14

II2

1 1B

1

1

R–W

10 3B W 5 EA1 B–G Y

2 100A ALT

2 5A ALT–S

2 30A MAIN

B A J 4(A), J 5(B) Junction Connector C B

2

Charge

15A AM2

9 3B

II2

1

1

1

W Y 1 1A R–W

B

2 A FL MAIN 2. 0L IG

1 A L

3 A S

1 B B

G 1(A), G 2(B) Generator

Battery IC REGULATOR

56
2004 COROLLA (EWD533U)

C9 Combination Meter

Service Hints G1 (A) Generator (A) 3–Ground : 13.2–14.0 volts with the engine running at 5000 rpm and 115°C (239°F) (A) 1–Ground : 0–4 volts with the ignition SW at ON position and the engine not running : Parts Location
Code C9 G1 A 34 32 See Page Code G2 I10 B 32 35 See Page J4 J5 Code A B 35 35 See Page

: Relay Blocks
Code 1 22 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector
Code IG IK IL IM 1A 1B 3B 22 28 Engine Wire and Engine Room J/B (Engine Compartment Left) Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement) 24 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) See Page Junction Block and Wire Harness (Connector Location)

: Connector Joining Wire Harness and Wire Harness
Code EA1 IA4 II2 38 40 42 See Page Joining Wire Harness and Wire Harness (Connector Location) Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B) Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement) Engine Wire and Instrument Panel Wire (Blower Unit RH)

57
2004 COROLLA (EWD533U)

Engine Control

B–O B–W 5 AM2 IG2 6 ST2 4 B–W R B–W B–W

I7

I10 Ignition SW B R–W R–W

(M/T)

(A/T)

R

R

6 IM 1 IA2

E3

R 3 IA2 12 II2 (A/T)

15A AM2

(M/T)

(A/T)

R

R

E B J 2(A), J 3(B) Junction Connector (A/T) (A/T) B (M/T) G–R A2 Park/Neutral Position SW 6 (A/T) J 2(A) Junction Connector B B G A G A B

3 IM B–R

C8 Clutch Start SW

1 R–W R–W R–W B–W B–W B–W B–O

A A

A A

2 (M/T) B R 9 B–W B–W 10 IA5 P N

3 EA1 2 IA4

10 EA1

B–R

1 2 30A MAIN 15A EFI 2

1 EFI Relay

5

1

11 3 1 2 1 C/OPN Relay 5 1

1

1

3

2

B

B

1 1A

W–B

4 IG

19 ID

1 IG

B B

1

1

12 IC

5 IL

8 IK

II2

9 EA1

9

II1

F10 Fuel Pump

FL MAIN 2. 0L

4 M 5

B

Battery

I10

ED

58
2004 COROLLA (EWD533U)

W–B

B

BH

(M/T)

G–R

B–R

B

(M/T)

B–O B–W W–B B–W W–B B–W

B–O B–W

E2 B–W E3 W–B B–W

E2 E3 W–B B–W

E2 E3 W–B W–B 4 GND IGT 3 11 A IGT4 W EVP 12 A L–B I1 Idle Air Control Valve 1 V3 VSV (EVAP) 2 B B I10 B VISC 2 B I10 W B–W B–W 1 I5 Ignition Coil and Igniter No. 4 23 A IGF L–Y +B IGF 2 L–Y

1 I2 Ignition Coil and Igniter No. 1 R–W +B

4 I3 Ignition Coil and Igniter No. 2 GND

1 +B

4 GND I4 Ignition Coil and Igniter No. 3

1 +B

4 GND

IGT 3 R–L

IGF 2 L–Y

IGT 3

IGF 2

IGF 2 L–Y

IGT 3 GR 10 A IGT3

Y–G L–Y

R (A/T)

F A

F A

F A

F A

R–W

(A/T)

Y–G

R–L

L–Y

J 2(A), J 3(B) Junction Connector

H B

8 B W–B NSW

3 D BATT

8 A IGT1

9 A IGT2

E 3(A), E 4(B), E 5(C), E 6(D) Engine Control Module

STA 9 B

FC 10 D

E03 5 B

E01 7 A

E02 6 A

RSO 5 A

W–B

W–B

(M/T)

W–B

(A/T)

W–B

G–R

B

B

J 4(A), J 5(B) Junction Connector

C A

C A

B (A/T) B (M/T) W–B W–B G–R B B B B

W–B

B

B

EC

B–L 1 DUTY GND 3

GR

R

59
2004 COROLLA (EWD533U)

Engine Control

B–O B–W

B–O

From Power Source System (See Page 48)

8

II1 10A M–HTR/ DEF I–UP

B–W

8 IL I10 B–W I10 B–W I10

B–W

B–W

B–W

B–W

1 I6 Injector No. 1

1 I7 Injector No. 2

1 I8 Injector No. 3

1 I9 Injector No. 4

1

C2 Camshaft Timing Oil Control Valve (VVT)

2

2

2

2

2

1 A #10

2 A #20

3 A # 30

4 A # 40

15 A OCV+

14 A OCV–

B–Y

W

Y

B

Y

L

13 D ELS2

E 3(A), E 4(B), E 5(C), E 6(D) Engine Control Module

CCV 1 C

EC 28 B

PSW 29 B

VG 24 B

EVG 32 B

THA 20 A

W THW 19 A W 2 1 E2 Engine Coolant Temp. Sensor

W–B

L

L–W

17

II2 V2 VSV (Canister Closed Valve)

10

II2

L

Y–B

L–R

G

P1 Power Steering Oil Pressure SW

1

1

3 VG

2 E2G

4 THA

2

+B 1

E2 5 BR

W–B

B

B

M1 Mass Air Flow Meter

BR BR

B

I10 A J7 Junction Connector IG

B

I10

B

60
2004 COROLLA (EWD533U)

B–O

B–O

From Power Source System (See Page 48)

15A TAIL

15A STOP

A13 Airbag Sensor Assembly

7 IH G–W (USA) 3 (Canada) G–W 1 3 TAIL Relay G–W (USA) 3

14 IC

GSW2 23 S9 Stop Light SW

IDL 13

2

13 Light Control SW OFF Tail G–B Head C12 Combination SW 10 G (Canada) 2 3 (USA) G 5 3 (USA)

Y

13 3C

11 3C

1 G–W G–W G–W 7 II L–W

5 IC

1 IL 6 Y IJ

I4

G

12 D ELS

19 C STP

14 D F/PS

16 D IDLO

E 3(A), E 4(B), E 5(C), E 6(D) Engine Control Module E2 28 A BR BR PTNK 21 D L VC 18 A VTA 21 A TBP 4 D R

1 ID2 7 II2 BR BR

2 ID2 Y

LG

Y

8 ID2 V5 VSV (Vapor Pressure Sensor) B B R

1

2

B A

B A J 2(A), J 3(B) Junction Connector

1

3

T1 Throttle Position Sensor

L

V4 Vapor Pressure Sensor

1

F B

F B

J 2(A), J 3(B) Junction Connector

3 Y

D B Y

2

2 B

H A

H A

H A

6 ID2 BR BR BR B BR Y BR B

16

II2

BR

7 ID2

(w/ Cruise Control)

C14 Cruise Control ECU

R–W

61
2004 COROLLA (EWD533U)

62
B–O 7 D LG–B FAN NO. 2 Relay FAN 6 D * 1 : Shielded LG FAN NO. 1 Relay CF 1 4 B P HT1A 2 C ACMG Y–B M/G CLT Relay HT 33 C G–W A/C SW Defroster Mode Detection SW ACLD (* 1) 3 31 C 23 B B Y A/C SW Defroster Mode Detection SW A/CS OX1A OX 13 A Y Pressure SW PRS 1 D B +B 32 C B–L (* 1) 27 A B NE+ THR A/C Thermistor C3 Crankshaft Position Sensor 1 2 W 4 C P–B HT1B J 2(A), J 3(B) Junction Connector E A W (* 1) 18 21 B W II2 OX1B W (* 1) NE– 34 A E A A B W W 9 II2 (* 1) W C1 Camshaft Position Sensor 2 1 E 3(A), E 4(B), E 5(C), E 6(D) Engine Control Module 26 A B G22+ B–O (* 1) (* 1)

B

Engine Control

B

H5 Heated Oxygen Sensor (Bank 1 Sensor 1)

2

B

+B

I10

B

4

BR

E1

2 4B

B

6 II1

1 4B

3 4B

B

4 4B

B

2004 COROLLA (EWD533U)

(* 1)

H8 Heated Oxygen Sensor (Bank 1 Sensor 2)

1

2

B

HT

+B

3

4

BR

OX

E1

(* 1)

(* 1)

I11

BR

BR

BR

B–O

B–O

From Power Source System (See Page 48) D1 Data Link Connector 3

7. 5A OBD SIL 7 TC 13 WFSE 15 SG 5 CG 4 BAT 16 7 W–B P–B R–B R–B L–R BR P IJ

2 3B

3 4C

1

II1

BR 3 3B L–R 4 4C P–B P

(* 1)

(* 1)

18 D SIL

20 D TC

19 D WFSE

E 3(A), E 4(B), E 5(C), E 6(D) Engine Control Module

E1 7 B

KNK1 1 B

EKNK 2 B

SPD 17 C

TACH 5 D

THWO 14 C

W 11 D

W–B V–W Y–R BR W B B R–Y R–Y Y–R B V–W (*1) (*1) (*1) (*1) 2 K1 Knock Sensor A B J 4(A), J 5(B) Junction Connector A B A B A B 16 4B BR 1 21 4B A A A A A A A A A A W–B BR A EB IE J6 Junction Connector BR BR BR BR 8 II2 BR BR BR

63
2004 COROLLA (EWD533U)

64
R–Y B–O Y–R B Malfunction Indicator Lamp 33 32 B–O Speedometer 8 Y–R 19 B Tachometer 10 4 8 4C V–W V–W 9 4C 9 W–G I2 (w/ ABS) W–G R–W C9 Combination Meter W–G (w/o ABS) 16 3B 14 2 IG 20 3B 22 3B C B B A R–W (w/o ABS) J 4(A), J 5(B) Junction Connector R–W II2 (w/o ABS) R–W 10A GAUGE From Power Source System (See Page 48) C A

Engine Control

14 IA6

17

W–G

SP1

S1 Skid Control ECU with Actuator

2004 COROLLA (EWD533U)

(w/ ABS)

4

3

W–G

II2

(w/o ABS)

1

R–W

V1 Vehicle Speed Sensor (Combination Meter)

(w/o ABS)

2

BR

(w/o ABS)

C B

BR

EB

(w/o ABS)

J 2(A), J 3(B) Junction Connector

System Outline The engine control system utilizes a microcomputer and maintains overall control of the engine, etc. An outline of engine control is given here. 1. Input Signals (1) Engine coolant temp. signal system The engine coolant temp. sensor detects the engine coolant temp. and has a built–in thermistor with a resistance which varies according to the engine coolant temp. Thus the engine coolant temp. is input as a control signal to TERMINAL THW of the engine control module. (2) Intake air temp. signal system The intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp., which is input as a control signal to TERMINAL THA of the engine control module. (3) Power steering oil pressure signal system Power steering oil pressure is detected by the power steering oil pressure SW and is input as a control signal to TERMINAL PSW of the engine control module. (4) RPM signal system Camshaft position and crankshaft position are detected by the camshaft position sensor and crankshaft position sensor. Camshaft position is input as a control signal to TERMINAL G2+ of the engine control module, and engine RPM is input into TERMINAL NE+. (5) Throttle signal system The throttle position sensor detects the throttle valve opening angle, which is input as a control signal to TERMINAL VTA of the engine control module. (6) Vehicle speed signal system The vehicle speed is detected by the ABS speed sensor and the signal is input to TERMINAL SPD of the engine control module via the comb. meter and the skid control ECU with actuator. (w/ ABS) The vehicle speed is detected by the vehicle speed sensor installed in the transaxle and the signal is input to TERMINAL SPD of the engine control module via the comb. meter. (w/o ABS) (7) NSW signal system (A/T) The Park/Neutral position SW detects whether the shift position is in neutral or not, and inputs a control signal to TERMINAL NSW of the engine control module. (8) A/C SW signal system The operating voltage of the A/C SW is detected and is input as a control signal to TERMINAL A/CS of the engine control module. (9) Battery signal system Voltage is constantly applied to TERMINAL BATT of the engine control module. When the ignition SW is turned to on, voltage for engine control module operation is applied via the EFI relay to TERMINAL +B of the engine control module. (10) Intake air volume signal system Intake air volume is detected by the mass air flow meter, and is input as a control signal to TERMINAL VG of the engine control module. (11) STA signal system To confirm that the engine is cranking, the voltage applied to the starter motor during cranking is detected and is input as a control signal to TERMINAL STA of the engine control module. (12) Oxygen sensor signal system The oxygen density in the exhaust gases is detected and is input as a control signal into TERMINALS OX1A and OX1B of the engine control module. To maintain stable detection performance by the oxygen sensor, a heater is used for warming the sensor. The heater is also controlled by the engine control module (HT1A and HT1B). (13) Engine knock signal system Engine knocking is detected by the knock sensor and input as a control signal to TERMINAL KNK1 of the engine control module. (14) Electrical load signal system When systems which cause a high electrical load such as the rear window defogger, taillight are turned on, a signal is input to TERMINALS ELS and ELS2 as a control signal. (15) Vapor pressure signal system Vapor pressure is detected by the vapor pressure sensor and is input as a control signal to TERMINAL PTNK of the engine control module.

65
2004 COROLLA (EWD533U)

Engine Control
2. Control System ∗ SFI system The SFI system monitors the engine conditions through the signals, which are input from each sensor to the engine control module. Based on this data and the program memorized in the engine control module, the most appropriate fuel injection timing is decided and current is output to TERMINALS #10, #20, #30 and #40 of the engine control module, operating the injectors (to inject fuel). This is the system which finely controls the fuel injection in response to the driving conditions, through the engine control module. ∗ ESA system The ESA system monitors the engine conditions using the signals, which are input to the engine control module from each sensor. Based on this data and the program memorized in the engine control module, the most appropriate ignition timing is decided and current is output to TERMINALS IGT1, IGT2, IGT3 and IGT4 of the engine control module. This output controls the ignition coil and igniter No. 1 , No. 2 , No. 3 and No. 4 to produce the most appropriate ignition timing for the driving conditions. ∗ IAC system The IAC system increases the RPM and provides idle stability for fast idle–up when the engine is cold, and when the idle speed has dropped due to electrical load and so on. The engine control module evaluates the signals from each sensor, and outputs current to TERMINAL RSO to control the idle air control valve. ∗ Knock control system Knock control system controls the gate based on the engine rotation speed and detects knocking by the peak value of the knock sensor output during the gate open period, and then controls it to the most suitable ignition timing in proportion to the driving condition. ∗ Evapoparge control system This system leads the vapor stuck to the canister to the serge tank in order not to agitate the air fuel by adjusting the fuel injection volume. The signal at this time will be output from TERMINAL EVP of the engine control module to VSV (EVAP). 3. Diagnosis System With the diagnosis system, when there is a malfunctioning in the engine control module signal system,the malfunction system is recorded in the memory. The malfunctioning system can be found by reading the display (Code) of the malfunction indicator lamp. 4. Fail–Safe System When a malfunction occurs in any system, if there is a possibility of engine trouble being caused by continued control based on the signals from that system, the fail–safe system either controls the system by using the data (Standard values) recorded in the engine control module memory or else stops the engine.

66
2004 COROLLA (EWD533U)

Service Hints C/OPN Relay 5–3 : Closed with the starter running and the engine running EFI Relay 5–3 : Closed with the ignition SW at ON or ST position E2 Engine Coolant Temp. Sensor 1–2 : Approx. 15.04 kΩ (–20°C, –4°F) Approx. 5.74 kΩ ( 0°C, 32°F) Approx. 2.45 kΩ (20°C, 68°F) Approx. 0.318 kΩ (80°C, 176°F) E3 (A), E4 (B), E5 (C), E6 (D) Engine Control Module Voltage at engine control module wiring connectors +B–E1 : 9–14 volts (Ignition SW at ON position) VC–E1 : 4.5–5.5 volts (Ignition SW at ON position) VTA–E1 : 0.3–0.8 volts (Ignition SW on and throttle valve fully closed) : 3.2–4.9 volts (Ignition SW on and throttle valve fully open) EVG–E1 : 3.3–3.9 volts (Ignition SW at ON position) THA–E1 : 0.5–3.4 volts (Engine idling and intake air temp. 0–80°C, 32–176°F) THW–E1 : 0.2–1.0 volts (Engine idling and engine coolant temp. 60–120°C, 140–248°F) STA–E1 : 6–14 volts (Engine cranking) IGT1, IGT2, IGT3, IGT4–E1 : Pulse generation (Engine idling) IGF–E1 : Pulse generation (Engine idling) FC–E1 : 9–14 volts (Ignition SW on and engine stopping) 0–3 volts (Engine idling) W–E1 : 9–14 volts (Engine idling and warning light off) A/CS–E1 : 9–14 volts (Ignition SW on and A/C SW off) SPD–E1 : Pulse generation (Driving approx. 20 km/h) ELS–E1 : 7.5–14 volts (Ignition SW on and taillight on) ELS2–E1 : 7.5–14 volts (Ignition SW on and rear window defogger on) NSW–E1 : 0–3 volts (Engine cranking) #10, #20, #30, #40–E1 : Pulse generation (Engine idling) NE+ –NE– : Pulse generation (Engine idling) RSO–E1 : Pulse generation (Engine idling) G2+ –NE– : Pulse generation (Engine idling) TBP–E1 : 9.0–14.0 volts (Ignition SW on) PTNK–E1 : 3.0–3.6 volts (Ignition SW at ON position and remove fuel cap) OX1A, OX1B–E1 : Pulse generation (Maintain engine speed at 2500 rpm for two minutes after warming up.) HT1A, HT1B–E1 : 9.0–14.0 volts (Ignition SW at ON position) 0–3.0 volts (Engine idling) KNK1–E1 : Pulse generation (Engine idling) EVP–E1 : 9.0–14.0 volts (Ignition SW at ON position) TACH–E1 : Pulse generation (Engine idling)

67
2004 COROLLA (EWD533U)

Engine Control
: Parts Location
Code A2 A13 C1 C2 C3 C8 C9 C12 C14 D1 E2 E3 E4 E5 E6 A B C D 32 34 32 32 32 34 34 34 34 34 32 34 34 34 34 J2 J3 See Page Code F10 H5 H8 I1 I2 I3 I4 I5 I6 I7 I8 I9 I10 A B 36 32 35 33 33 33 33 33 33 33 33 33 35 35 35 See Page J4 J5 J6 J7 K1 M1 P1 S1 S9 T1 V1 V2 V3 V4 V5 Code A B 35 35 35 35 33 33 33 33 35 33 33 33 33 37 37 See Page

: Relay Blocks
Code 1 3 22 28 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left) RH R/B (Right Side of the Instrument Panel Reinforcement)

: Junction Block and Wire Harness Connector
Code IC ID IG IH II IJ IK IL IM 1A 3B 3C 4B 4C 22 28 30 Engine Wire and Engine Room J/B (Engine Compartment Left) Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement) Instrument Panel Wire and Center J/B (Behind the Combination Meter) 24 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) ( ) 25 25 See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel) Floor Wire and Instrument Panel J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness
Code EA1 IA2 IA4 IA5 IA6 ID2 II1 II2 42 42 Instrument Panel Wire and Floor Wire (Left Kick Panel) Engine Wire and Instrument Panel Wire (Blower Unit RH) 40 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement) 38 See Page Joining Wire Harness and Wire Harness (Connector Location) Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)

68
2004 COROLLA (EWD533U)

: Ground Points
Code EB EC ED IE IG BH 38 38 40 40 44 See Page Ground Points Location Left Side of the Cylinder Head Front Left Suspension Tower Behind the Combination Meter Right Kick Panel Under the Left Quarter Pillar

: Splice Points
Code E2 E3 I2 I4 38 42 See Page Wire Harness with Splice Points Engine Wire Instrument Panel Wire Code I7 I10 I11 42 42 See Page Wire Harness with Splice Points Instrument Panel Wire Engine Wire

69
2004 COROLLA (EWD533U)

Headlight
From Power Source System (See Page 48) 1 10A GAUGE 10A ECU–B 15A DOME

L–W R–W

2 1 IH 2 IG 1 CLTB 1 R–W R–W R–B L–W CLTS 4 CLTE 3

A18 Automatic Light Control Sensor

G–W 2 G–R 18

G–Y

G–B

(*1)

(*1)

22 3B

16 3B

12 3B R–W R–B

1

IE1 G–Y (*1)

3 IE1 G–O (*1)

IE1 (*1)

3 +B

12 IG

20 CSB

19 CSO

CSE

CHG 8 15

T D2 Daytime Running Light Relay 7

H

HI 16 2

(*1)

E

8 3B G–W (*1)

6 3C W–B 5 3C 4 3C R R–Y R 3 13 12 8 9 IA4 Dimmer SW Low High Flash W–B C12 Combination SW 10 W–B (* 1) 11 W–B W–B A

10 3B

2

Y

Y

II2

Light Control SW

OFF Tail Head

1 G1 Generator L

R–Y

R

Y

W–B

11 4B

21 4B

A W–B (* 1) IE A

J6 Junction Connector ED

70
2004 COROLLA (EWD533U)

L–W R–W

L–W R–W R–B

From Power Source System (See Page 48) * * * * 1 : USA 2 : w/ ABS 3 : w/o ABS 4 : w/ Fog Light 1 40A HEAD MAIN 2 Combination SW R–B 1 R 1 3 HEAD Relay 2 1 R–Y R–B 5 1 R–B

1 P3 Parking Brake SW

R

1 G–O R–B (*4) 1 D2 Daytime Running Light Relay

11 PKB

4 FOG

TAIL 14

DIM 13

BRK 10

DRL 1

H–LP 6 4 IA2 R–Y 1

W–R

R–W

R–W

G–B

R–Y

(* 1)

(* 3)

(* 2)

1 10A HEAD LH LWR R–B 2 1

1 10A HEAD RH LWR 2 1

15

IA5 R–W (*3)

15 IA5 R–W (*2) S1 Skid Control ECU with Actuator

B J1 Junction Connector

12 PKB

1

B2 Brake Fluid Level Warning SW

2 1 IA4 1 R–B R–B

2

1 R–B

2 W–B

R–B

I3 W–B W–R G–B(* 1)

W–B

H4 Headlight RH (Low)

H2 Headlight LH (Low)

B R–W

R–W

R

W–B

71
2004 COROLLA (EWD533U)

Headlight
From Power Source System (See Page 48) * 1 : USA

L–W R–W R–B

15A TAIL

L–W

R–B

7 IH G–W 3 1 TAIL Relay 5 1 W–R G 3 G–B (* 1) 2 3 (* 1) (* 1)

R R–B 1 7 IC G–W (* 1)

1 1 10A HEAD LH UPR 2 2 1 10A HEAD RH UPR L–W 5 1 1 1 R 20 4C 2 4 IL 3 1

1 DIMMER Relay 3

3

R–W

R

R

19 4C

6

IA6

10

IA2

R–W

14

5

4

18

R–W

R

2

2

H3 Headlight RH (High)

H1 Headlight LH (High)

1

1

13

W–B

W–B

W–B W–R G–B(*1) W–B

E4

W–B

W–B

ED

72
2004 COROLLA (EWD533U)

W–B

EA

W–B

High Beam

C9 Combination Meter

W–R

L–W

(*1)

G

R

System Outline The current is always flowing from the HEAD MAIN fuse to HEAD relay (Coil side) to TERMINAL 6 of the daytime running light relay, from ECU–B fuse to TERMINAL 3 of the daytime running light relay and from the TAIL fuse to TAIL relay (Coil side) to TERMINAL 14 of the daytime running light relay (USA). When the ignition SW is turned on, the current flowing through the GAUGE fuse flows to TERMINAL 12 of the daytime running light relay. 1. Daytime Running Light Operation When the engine is started, voltage generated at TERMINAL L of the generator is applied to TERMINAL 8 of the daytime running light relay. If the parking brake lever is pulled up (Parking brake SW on) at this time, the relay is not activated so the daytime running light system does not operate. If the parking brake lever is then released (Parking brake SW off), a signal is input to TERMINAL 11 of the relay. This activates the daytime running light relay and the HEAD relay is turned to on, so the current flows from the HEAD MAIN fuse to the HEAD relay (Point side) to HEAD LH LWR, HEAD RH LWR fuses to TERMINAL 2 of the headlights to TERMINAL 1 to TERMINAL 1 of the daytime running light relay to TERMINAL 2 to GROUND, causing the headlights to light up (Headlights light up dimmer than normal brightness.). Once the daytime running light system operates and the headlights light up, the headlights remain on even if the parking brake lever is pulled up (Parking brake SW on). If the engine stalls and the ignition SW remains on, the headlights remain light up even through current is no longer output from TERMINAL L of the generator. If the ignition SW is then turned off, the headlights go off. If the engine is started with the parking brake lever released (Parking brake SW off), the daytime running light system operates and headlights light up when the engine starts. 2. Headlight Operation When the light control SW is switched to Head position and the dimmer SW is set to Low position, causing the daytime running light relay and the HEAD relay to turn on, so the current flows from the HEAD MAIN fuse to HEAD relay (Coil side) to TERMINAL 6 of the daytime running light relay to TERMINAL 7 to TERMINAL 12 of the light control SW to TERMINAL 11 to GROUND. The current to HEAD relay (Point side) then flows to HEAD LH LWR, HEAD RH LWR fuses to TERMINAL 2 of the headlights (Low) to TERMINAL 1 to TERMINAL 1 of the daytime running light relay to TERMINAL 2 to GROUND, causing the headlights to light up at normal intensity. When the light control SW is switched to Head position and the dimmer SW is set to High position, the signal from the dimmer SW is input to the daytime running light relay. This activates the daytime running light relay and the HEAD relay is turned on, so the current flows from the HEAD MAIN fuse to HEAD relay (Point side) to TERMINAL 1 of the DIMMER relay to TERMINAL 2 to TERMINAL 13 of the daytime running light relay, activating the DIMMER relay. This causes current to flow from TERMINAL 3 of the DIMMER relay to TERMINAL 5 to HEAD LH UPR, HEAD RH–UPR fuses to TERMINAL 2 of the headlights (High) to TERMINAL 1 to GROUND, causing the headlights to light up at high beam and the high beam indicator light to light up. When the dimmer SW is switched to Flash position, the signal from the dimmer SW is input to the daytime running light relay. This activates the daytime running light relay and the HEAD relay is turned on, so the current flows from the HEAD MAIN fuse to HEAD relay (Point side) to TERMINAL 1 of the DIMMER relay to TERMINAL 2 to TERMINAL 13 of the daytime running light relay, activating the DIMMER relay, and also flows from the HEAD LH UPR, HEAD RH UPR fuses to TERMINAL 2 of the headlights to TERMINAL 1 to GROUND, causing the headlights to light up at high beam and the high beam indicator light to light up. 3. Automatic Light Control Operation (USA) When the daytime running light is operating and the Automatic control sensor detects a decrease in the ambient light, the automatic light control operation starts. At the same time, daytime running light relay is activated, so current flows from the TAIL fuse to the TAIL relay (Coil side) to TERMINAL 14 of the daytime running light relay, and the HEAD MAIN fuse to the HEAD relay (Coil side) to TERMINAL 6 of the daytime running light relay, activating both the TAIL relay and the HEAD relay, so that the taillights and headlights light up. When the automatic light control sensor detects an increase in the ambient light, the ignition SW is turned to off, the light control SW is turned to Head position, and the automatic light control operation stops.

73
2004 COROLLA (EWD533U)

Headlight
Service Hints HEAD Relay 1–2 : Closed with the light control SW at Head position or the dimmer SW at Flash position Closed with the engine running and the parking brake lever is released (Parking brake SW off) D2 Daytime Running Light Relay 12–Ground : Approx. 12 volts with the ignition SW at ON position 7–Ground : Approx. 12 volts with the light control SW at Head position or the dimmer SW at Flash position 3, 6, 14–Ground : Always approx. 12 volts 11–Ground : Continuity with the parking brake lever pulled up 8–Ground : 13.2–14.0 volts with the engine running at 5000 rpm and 115°C (239°F) 2–Ground : Always continuity 16–Ground : Continuity with the dimmer SW at High or Flash position 10–Ground : Continuity with the brake fluid level not enough or the parking brake lever pulled up : Parts Location
Code A18 B2 C9 C12 D2 34 32 34 34 34 See Page Code G1 H1 H2 H3 H4 32 32 32 32 32 See Page Code J1 J6 P3 S1 33 35 35 33 See Page

: Relay Blocks
Code 1 3 22 28 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left) RH R/B (Right Side of the Instrument Panel Reinforcement)

: Junction Block and Wire Harness Connector
Code IC IG IH IL 3B 3C 4B 4C 25 25 24 28 30 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement) Instrument Panel Wire and Center J/B (Behind the Combination Meter) See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) ( )

: Connector Joining Wire Harness and Wire Harness
Code IA2 IA4 IA5 IA6 IE1 II2 42 42 Instrument Panel Wire and Instrument Panel No.4 Wire (Behind the Combination Meter) Engine Wire and Instrument Panel Wire (Blower Unit RH) 40 Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement) See Page Joining Wire Harness and Wire Harness (Connector Location)

: Ground Points
Code EA ED IE 38 38 40 See Page Ground Points Location Front Right Fender Front Left Suspension Tower Behind the Combination Meter

74
2004 COROLLA (EWD533U)

: Splice Points
Code E4 38 See Page Wire Harness with Splice Points Engine Room Main Wire Code I3 42 See Page Wire Harness with Splice Points Engine Room Main Wire

75
2004 COROLLA (EWD533U)

Fog Light
From Power Source System (See Page 48) 1

10A ECU–B

10A GAUGE

15A FOG

2 1 IH 2 IG R–W G G 22 3B R–B 1 12 3B R–W 1 5 FOG Relay D2 Daytime Running Light Relay 2 1 3 1 R R–Y R 1 9 IA5 16 4 G–O Fog Light SW R–Y OFF On C12 Combination SW 4 R–Y H 7 R HI FOG 2 4 3C R 8 9 G–O R 1

3 +B

12 IG

6 3C

5 3C

12

R

Dimmer SW

Light Control SW

OFF Tail Head

Low F1 Front Fog Light LH High Flash

1

F2 Front Fog Light RH W–B

C12 Combination SW

11

2

W–B

W–B

A

J6 Junction Connector ED

IE

76
2004 COROLLA (EWD533U)

W–B EA

R 1 2

Service Hints FOG Relay 3–5 : Closed with light control SW at Head position, dimmer SW at Low position and fog light SW at On position : Parts Location
Code C12 D2 34 34 See Page Code F1 F2 32 32 See Page Code J6 35 See Page

: Relay Blocks
Code 1 22 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector
Code IG IH 3B 3C 25 28 See Page Junction Block and Wire Harness (Connector Location) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)

: Connector Joining Wire Harness and Wire Harness
Code IA5 40 See Page Joining Wire Harness and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)

: Ground Points
Code EA ED IE 38 38 40 See Page Ground Points Location Front Right Fender Front Left Suspension Tower Behind the Combination Meter

77
2004 COROLLA (EWD533U)

Turn Signal and Hazard Warning Light
From Power Source System (See Page 48) 1

10A GAUGE

10A HAZARD

2 2 IG 1

R–W

22 3B 8 IA5

15 3B

G–W

R–W

G–W

1 IG

4 +B

T2 Turn Signal Flasher Relay

LL G–Y G–B 3 G–B

LR 2 G–Y 6 IG 5 IG 25 G–Y

9 IL

1 IK

11 IH

5 IH

13 IH

8 IC

1 IC

17 ID

12 ID

12 IH

G–B

G–Y

G–B

F4 Front Turn Signal Light RH

F3 Front Turn Signal Light LH

G–Y

R11 Rear Combination Light RH

R9 Rear Combination Light LH

24

3 Turn

3 Turn

LH

RH

2

2 4

4 2

W–B

W–B

W–B

W–B

W–B

ED

EA

BI

78
2004 COROLLA (EWD533U)

C9 Combination Meter W–B

3

3

G–B

* 1 : w/ Wireless Door Lock * 2 : w/o Wireless Door Lock

T2 Turn Signal Flasher Relay

GND 7

EL 5

ER 6

HAZ 8

Y–B

G–O

G–R

3 3C Y–B W–B 5 Turn SW LH RH 6 7 2 3C Y–B C12 Combination SW W–B 3 H7 Hazard SW 17 4B 15 4B 2 W–B 18 4B 21 4B 21 3A W–B 11 3A W–B W–B A J6 Junction Connector A (* 1) J7 Junction Connector IE IG (* 2)

(* 1)

79
2004 COROLLA (EWD533U)

Turn Signal and Hazard Warning Light
Service Hints T2 Turn Signal Flasher Relay 1–Ground : Approx. 12 volts with the ignition SW at ON position 7–Ground : Always continuity 4–Ground : Always approx. 12 volts : Parts Location
Code C9 C12 F3 F4 34 34 32 32 See Page Code H7 J6 J7 R9 35 35 35 37 See Page Code R11 T2 37 35 See Page

: Relay Blocks
Code 1 22 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector
Code IC ID IG IH IK IL 3A 3B 3C 4B 30 Instrument Panel Wire and Center J/B (Behind the Combination Meter) 28 Instrument Panel Wire and RH J/B ( g Side of the Instrument Panel Reinforcement) (Right ) 25 25 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) 24 See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel) Floor Wire and Instrument Panel J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness
Code IA5 40 See Page Joining Wire Harness and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)

: Ground Points
Code EA ED IE IG BI 38 38 40 40 44 See Page Ground Points Location Front Right Fender Front Left Suspension Tower Behind the Combination Meter Right Kick Panel Lower Back Panel

80
2004 COROLLA (EWD533U)

Memo

81
2004 COROLLA (EWD533U)

Taillight

G–W (USA) 3 TAIL Relay 15A TAIL 2 5 (USA) G–W 3 7 IH 1 3

2 IL

2 IC

2 ID

G

G

3 1 IB (USA) G–B

3

G

(Canada)

J1 Junction Connector

G–W

A A A

W

14 TAIL D2 Daytime Running Light Relay

1 1C G 2 15 (USA) F4 Front Parking Light RH 100A ALT (USA) G–W G F3 Front Parking Light LH 1 2 W–B W–B EA T

G

1 1 1A

1

2 13 OFF Light Control SW Tail Head C12 Combination SW 10 G (Canada) (USA) W–B G I4

B

FL MAIN 2. 0L

11 4B

21 4B

Battery A J6 Junction Connector ED

IE

82
2004 COROLLA (EWD533U)

(USA)

W–B

W–B

G C A

Tail 4 1 B B C A G G

W–B

R9 Rear Combination Light LH J 8(A), J 9(B) Junction Connector

Tail 4 1 C A G

B B

W–B

G

BI R11 Rear Combination Light RH 1 2 W–B L1 License Plate Light LH G

W–B

2004 COROLLA (EWD533U)
1 2 A A A A W–B L2 License Plate Light RH G

A A

W–B

BH

J 8(A) Junction Connector

83

Taillight
Service Hints C12 Combination SW 10–13 : Continuity with the light control SW at Tail or Head position TAIL Relay 5–3 : Closed with the light control SW at Tail or Head position : Parts Location
Code C12 D2 F3 F4 34 34 32 32 J8 J9 See Page Code J1 J6 A B 33 35 36 36 See Page Code L1 L2 R9 R11 36 36 37 37 See Page

: Relay Blocks
Code 3 28 See Page Relay Blocks (Relay Block Location) RH R/B (Right Side of the Instrument Panel Reinforcement)

: Junction Block and Wire Harness Connector
Code IB IC ID IH IL 1A 1C 4B 25 25 25 24 22 22 30 See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel) Floor Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) Engine Wire and Engine Room J/B (Engine Compartment Left) Engine Room Main Wire and Engine Room J/B (Engine Compartment Left) Instrument Panel Wire and Center J/B (Behind the Combination Meter)

: Ground Points
Code EA ED IE BH BI 38 38 40 44 44 See Page Ground Points Location Front Right Fender Front Left Suspension Tower Behind the Combination Meter Under the Left Quarter Pillar Lower Back Panel

: Splice Points
Code I4 42 See Page Wire Harness with Splice Points Instrument Panel Wire Code See Page Wire Harness with Splice Points

84
2004 COROLLA (EWD533U)

Memo

85
2004 COROLLA (EWD533U)

Illumination

L–W

OFF Light Control SW Tail Head 13 G–W (* 2) 10

C12 Combination SW * 1 : USA * 2 : Canada

L–W

(* 1)

7 IH

G–W

G–W

4 IL

15A TAIL 3 3

(*1)

(* 2) G

G

I4

I4

G

I4

G

I4

G

1 7 IC 1 IB TAIL Relay 2 L–W W

3 (* 1) G G G G R5 Rear Window Defogger SW W–B 1 3 W–B

5

R 3(A), R 4(B) Radio and Player

3

3

10 A A8 A/C SW 5 B W–B 10

G–B

(* 1)

5

1

1 1C

2

2

14 TAIL D2 Daytime Running Light Relay W–B

15A DOME

100A ALT

1

1 I5 1 1A B I5 W–B

FL MAIN 2. 0L

Battery

86
2004 COROLLA (EWD533U)

L–W

20 4C E6 Engine Control Module ELS 12 18 4C

I4

I4

I4

I4

I4

G

G

G

G

G

C6 Cigarette Lighter Illumination

A10 A/T Shift Lever Illumination

18

C9 Combination Meter 2 6 +B

H7 Hazard SW

Illumination

5

B5 Blower SW

8

2

3

4

3

1

1

R7 Rheostat

LED 5

G

TAIL

ILL– 1

W–R

W–B

W–B

W–B

W–B

W–B

W–B

I5

W–B

I5

W–B

I5

W–B

I5

W–B

W–R

19 4B

21 4B

J6 Junction Connector

W–B A IE

W–B

28

L–W GND 3

G

G

G

G

G

G

G

L–W

87
2004 COROLLA (EWD533U)

Illumination
Service Hints C12 Combination SW 10–13 : Continuity with the light control SW at Tail or Head position TAIL Relay 5–3 : Closed with the light control SW at Tail or Head position : Parts Location
Code A8 A10 B5 C6 C9 34 34 34 34 34 See Page Code C12 D2 E6 H7 J6 34 34 34 35 35 See Page Code R3 R4 R5 R7 A B 35 35 35 35 See Page

: Relay Blocks
Code 1 3 22 28 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left) RH R/B (Right Side of the Instrument Panel Reinforcement)

: Junction Block and Wire Harness Connector
Code IB IC IH IL 1A 1C 4B 4C 25 25 24 22 22 30 See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) Engine Wire and Engine Room J/B (Engine Compartment Left) Engine Room Main Wire and Engine Room J/B (Engine Compartment Left) Instrument Panel Wire and Center J/B (Behind the Combination Meter)

: Ground Points
Code IE 40 See Page Ground Points Location Behind the Combination Meter

: Splice Points
Code I4 42 See Page Wire Harness with Splice Points Instrument Panel Wire Code I5 42 See Page Wire Harness with Splice Points Instrument Panel Wire

88
2004 COROLLA (EWD533U)

Memo

89
2004 COROLLA (EWD533U)

Interior Light
From Power Source System (See Page 48) 1

15A DOME

10A GAUGE

25A DOOR

2 1

7 IC I11(A) Integration Relay

L–W

10 IG

1 +B

GND 9

DCTY 5

PRCTY 6

4 IF

10 IH

1 IE

1 ID

3

IL

4 IK

4 IL

6 IE

4 IE

4 ID

R–W

R–W

W–B

W–B

L–W

W–B(*1)

B(* 2 * 5)

17

20 L–W

L–W

R–Y

R

B1

B (*1 * 5)

L3 Luggage Compartment Light J10 Junction Connector

L–W

C9 Combination Meter

1

Door

20 4C I13 Interior Light

2

2 R–W A A L4 Luggage Compartment Light SW R–W 1

5 1 D4 Door Courtesy SW Front LH L–W 19 4C

1

J6 Junction Connector W–B

A

J7 Junction Connector W–B

A

L–W

W–B(*1) B(*2 * 5)

IE

IG

90
2004 COROLLA (EWD533U)

* * * * * *

1 : w/ Moon Roof 2 : w/o Moon Roof 3 : w/o Door Lock Control 4 : w/ Door Lock Control 5 : w/ Automatic Glare–Resistant EC Mirror 6 : w/o Automatic Glare–Resistant EC Mirror

I11(A) Integration Relay

LP 3 A

PCTY 13 A

LP2 12 A

3 IE

14 ID

15 ID

3 IK

3 IG

(* 2, *1 * 5)

R–W

(* 1 * 6)

B (* 1 * 5)

B

B

(*3)

Door

R–B

7

10 4B

1 (* 6) (* 5) (* 6) (* 5)

R7 Rheostat

R–B

R–Y

4

Off On

3

R–W

(* 3)

1 (* 6) (* 5) (* 6) (* 5) I12 Personal Light

M2 Personal Light

D5 Door Courtesy SW Front RH R–W

3

6

D7 Door Courtesy SW Rear RH

D6 Door Courtesy SW Rear LH

R–W (*4)

1

1

1

W–B

(* 3)

(* 4)

9 4B

7 4B

R–W

B(* 1 * 5)

B(* 2 * 5)

B(* 2 * 6)

19 4B

3

IK1

W–B

(* 1)

21 4B

W–B(*1) B(* 2 * 5)

B1

W–B

A J6 Junction Connector IE

(*2 * 6)

B

(* 2 *6)

R–W

R–W

(*4)

(*4)

B

91
2004 COROLLA (EWD533U)

Interior Light
Service Hints D4, D5, D6, D7 Door Courtesy SW Front LH, RH, Rear LH, RH 1–Ground : Closed with the door open L4 Luggage Compartment Light SW 1–Ground : Closed with the luggage compartment door open : Parts Location
Code C9 D4 D5 D6 D7 34 36 36 36 36 See Page Code I11 I12 I13 J6 J7 A 35 36 36 35 35 See Page Code J10 L3 L4 M2 R7 36 36 36 37 35 See Page

: Relay Blocks
Code 1 22 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector
Code IC ID IE IF IG IH IK IL 4B 4C 24 30 Instrument Panel Wire and Center J/B (Behind the Combination Meter) 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) ( ) 25 25 25 See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel) Floor Wire and Instrument Panel J/B (Lower Finish Panel) Roof Wire and Instrument Panel J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness
Code IK1 42 See Page Joining Wire Harness and Wire Harness (Connector Location) Roof Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)

: Ground Points
Code IE IG 40 40 See Page Ground Points Location Behind the Combination Meter Right Kick Panel

: Splice Points
Code B1 44 See Page Wire Harness with Splice Points Roof Wire Code See Page Wire Harness with Splice Points

92
2004 COROLLA (EWD533U)

Memo

93
2004 COROLLA (EWD533U)

Stop Light
From Power Source System (See Page 48)

15A STOP

14 IC R–W 2 S9 Stop Light SW 1 G–W 5 IC 7 ID G–W C B C B J 8(A), J 9(B) Junction Connector B A B A G–W G–W G–W (Bulb Type)

R11 Rear Combination Light RH

R9 Rear Combination Light LH

2 Stop

2 Stop

H9 High Mounted Stop Light

1

1 H9 High Mounted Stop Light

2

4

4 2

(Bulb Type)

W–B

W–B

A A

A A

A A

J 8(A) Junction Connector

W–B

BI

94
2004 COROLLA (EWD533U)

W–B

BH

(LED Type)

W–B

W–B

(LED Type)

G–W

G–W

Service Hints S9 Stop Light SW 2–1 : Closed with the brake pedal depressed : Parts Location
Code H9 J8 A 36 36 See Page J9 R9 Code B 36 37 See Page Code R11 S9 37 35 See Page

: Junction Block and Wire Harness Connector
Code IC ID 25 25 See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel) Floor Wire and Instrument Panel J/B (Lower Finish Panel)

: Ground Points
Code BH BI 44 44 See Page Ground Points Location Under the Left Quarter Pillar Lower Back Panel

95
2004 COROLLA (EWD533U)

Back–Up Light
From Power Source System (See Page 48)

10A GAUGE

2 IG

22 3B

20 3B R–W 14 II2 J10 Junction Connector C C J4 Junction Connector R–B R–B R–B R12 Rear Combination Light RH C R–W (A/T) (M/T) R–W R–W B B

R–W

1 Back–Up 3 A2 Back–Up Light SW 2 1 W–B 2 B1 Back–Up Light SW

1 Back–Up

2

2

R–B (A/T) 13

(M/T)

R–B

6 ID

II2 9 IK R–B A B A B J 8(A), J 9(B) Junction Connector A A

R–B

W–B

W–B

BH

BI

96
2004 COROLLA (EWD533U)

W–B

R10 Rear Combination Light LH

Service Hints A2 Back–Up Light SW (A/T) 2–3 : Closed with the shift lever at R position B1 Back–Up Light SW (M/T) 2–1 : Closed with the shift lever at R position : Parts Location
Code A2 B1 J4 32 32 35 See Page J8 J9 J10 Code A B 36 36 36 See Page Code R10 R12 37 37 See Page

: Junction Block and Wire Harness Connector
Code ID IG IK 3A 3B 25 25 24 28 See Page Junction Block and Wire Harness (Connector Location) Floor Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)

: Connector Joining Wire Harness and Wire Harness
Code II2 42 See Page Joining Wire Harness and Wire Harness (Connector Location) Engine Wire and Instrument Panel Wire (Blower Unit RH)

: Ground Points
Code BH BI 44 44 See Page Ground Points Location Under the Left Quarter Pillar Lower Back Panel

97
2004 COROLLA (EWD533U)

Wiper and Washer
From Power Source System (See Page 48) C11 Combination SW 25A WIPER 15A WASHER * * * * 1 : w/ Intermittent Volume SW 2 : w/o Intermittent Volume SW 3 : w/ Washer Continuous 4 : w/ Intermittent MIST Wiper SW Washer SW OFF INT 11 IC 7 IL 9 IC LO HI Off L L L On

Wiper Relay (* 4)

(* 1)

+B 8 2 M 1 F5 Front Washer Motor L 9

+2 7

+1 6

+S 5

(* 2)

EW 4

W

W–B

L–W

L–W

L–R

8 IA2 L–R L–Y

7

IA2 L–W

6 IA2 L–W

9 IA2 L–Y

L–W

4 +2

1 +1

2 B

M W–B

W–B

5 E F6 Front Wiper Motor

L–W

L–R

L

3 S

A J6 Junction Connector IE

EA

98
2004 COROLLA (EWD533U)

L–Y

(* 3)

System Outline With the ignition SW turned on, the current flows to TERMINAL 8 of the wiper and washer SW, TERMINAL 2 of the front wiper motor through the WIPER fuse, and the current flows to TERMINAL 2 of the washer motor through the WASHER fuse. 1. Low Speed Position With wiper SW turned to LO position, the current flows from TERMINAL 8 of the front wiper and washer SW to TERMINAL 7 to TERMINAL 1 of the front wiper motor to TERMINAL 5 to GROUND and causes to the front wiper motor to run at low speed. 2. High Speed Position With wiper SW turned to HI position, the current flows from TERMINAL 8 of the front wiper and washer SW to TERMINAL 9 to TERMINAL 4 of the front wiper motor to TERMINAL 5 to GROUND and causes to the wiper motor to run at high speed. 3. INT Position With wiper SW turned to INT position, the relay operates and the current which is connected by relay function flows from TERMINAL 8 of the front wiper and washer SW to TERMINAL 5 to GROUND. This flow of current operates the intermittent circuit and the current flows from TERMINAL 8 of the front wiper and washer SW to TERMINAL 7 to TERMINAL 1 of the front wiper motor to TERMINAL 5 to GROUND and the functions. The intermittent operation is controlled by the charge/discharge function of the condenser installed in the relay, and the intermittent time is controlled by a time control SW (w/ intermittent volume SW) to change the charging time of the condenser. 4. MIST Position With wiper SW turned to MIST position, the current flows from TERMINAL 8 of the front wiper and washer SW to TERMINAL 7 to TERMINAL 1 of the front wiper motor to TERMINAL 5 to GROUND and causes to the front wiper motor to run at low speed. 5. Washer Continuous Operation With the washer SW turned to on, the current flows from TERMINAL 2 of the washer motor to TERMINAL 1 to TERMINAL 4 of the front wiper and washer SW to TERMINAL 5 to GROUND and causes to the washer motor to run, and the window washer jet operates. This causes the current to flow to washer continuous operation circuit in TERMINAL 8 of the front wiper and washer SW to TERMINAL 7 to TERMINAL 1 of the front wiper motor to TERMINAL 5 to GROUND and the washer operates continuously. Service Hints C11 Combination SW 5–Ground : Always continuity 8–Ground : Approx. 12 volts with ignition SW at On position 7–Ground : Approx. 12 volts with wiper and washer SW at LO position : Approx. 12 volts with wiper and washer SW at MIST position : Approx. 12 volts every approx. 1 to 10 seconds intermittently with wiper and washer SW at INT position 6–Ground : Approx. 12 volts with ignition SW on unless wiper motor at STOP position 9–Ground : Approx. 12 volts with ignition SW on and wiper and washer SW at HI position F6 Front Wiper Motor 2–3 : Closed unless wiper motor at STOP position : Parts Location
Code C11 F5 34 32 See Page Code F6 J6 32 35 See Page Code See Page

: Junction Block and Wire Harness Connector
Code IC IL 25 24 See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness
Code IA2 40 See Page Joining Wire Harness and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)

99
2004 COROLLA (EWD533U)

Wiper and Washer
: Ground Points
Code EA IE 38 40 See Page Ground Points Location Front Right Fender Behind the Combination Meter

100
2004 COROLLA (EWD533U)

Memo

101
2004 COROLLA (EWD533U)

Horn
From Power Source System (See Page 48) 1 * 1 : w/ Wireless Door Lock * 2 : w/o Wireless Door Lock

10A HORN

2 1

B–W

1

1

1

5 HORN Relay

2

3

1

1

G–Y

B–W

18 IA5

B H6 Horn G–Y (*1) 13 4A G–Y 12 4A G–Y 1 Horn C10 Combination SW (*2)

102
2004 COROLLA (EWD533U)

(* 1)

Service Hints HORN Relay 5–3 : Closed with the horn SW on. : Parts Location
Code C10 34 See Page Code H6 32 See Page Code See Page

: Relay Blocks
Code 1 22 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector
Code 4A 30 See Page Junction Block and Wire Harness (Connector Location) Instrument Panel Wire and Center J/B (Behind the Combination Meter)

: Connector Joining Wire Harness and Wire Harness
Code IA5 40 See Page Joining Wire Harness and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)

103
2004 COROLLA (EWD533U)

Cigarette Lighter
From Power Source System (See Page 48)

15A CIG

8 IF

10 3A

9 3A

GR 2

GR

C5 Cigarette Lighter

1

W–B A J6 Junction Connector IE

104
2004 COROLLA (EWD533U)

Service Hints C5 Cigarette Lighter 2–Ground : Approx. 12 volts with the ignition SW at ACC or ON position 1–Ground : Always continuity : Parts Location
Code C5 34 See Page Code J6 35 See Page Code See Page

: Junction Block and Wire Harness Connector
Code IF 3A 25 28 See Page Junction Block and Wire Harness (Connector Location) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)

: Ground Points
Code IE 40 See Page Ground Points Location Behind the Combination Meter

105
2004 COROLLA (EWD533U)

Clock
From Power Source System (See Page 48) 1

15A TAIL

15A DOME

15A CIG

2 7 IH 1 8 IF

(USA)

G–W

(USA)

G–W

7 IC GR 4 IL TAIL Relay 20 4C L–W 10 3A 16 4C 5 3A L–W D2 Daytime Running Light Relay (USA) 1 GR 4 C7 Clock 2 18 3A 11 3A W–B W–B A J7 Junction Connector IG G 3 G (Canada) I4

3

3

1

3

2 (Canada) G–W

5

3

3

14 TAIL

T 15 (USA)

G–W

(USA)

G–B

13 OFF Light Control SW Tail Head C12 Combination SW 10 (USA)

11 4B

21 4B (USA) W–B

W–B

A

J6 Junction Connector

IE

106
2004 COROLLA (EWD533U)

G

L–W

Service Hints C7 Clock 4–Ground : Approx. 12 volts with the ignition SW at ACC or ON position 1–Ground : Always approx. 12 volts 3–Ground : Approx. 12 volts with the light control SW at Tail or Head position 2–Ground : Always continuity : Parts Location
Code C7 C12 34 34 See Page Code D2 J6 34 35 See Page Code J7 35 See Page

: Relay Blocks
Code 1 3 22 28 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left) RH R/B (Right Side of the Instrument Panel Reinforcement)

: Junction Block and Wire Harness Connector
Code IC IF IH IL 3A 4B 4C 25 25 24 28 30 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement) Instrument Panel Wire and Center J/B (Behind the Combination Meter) See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) ( )

: Ground Points
Code IE IG 40 40 See Page Ground Points Location Behind the Combination Meter Right Kick Panel

: Splice Points
Code I4 42 See Page Wire Harness with Splice Points Instrument Panel Wire Code See Page Wire Harness with Splice Points

107
2004 COROLLA (EWD533U)

Power Outlet
From Power Source System (See Page 48)

15A CIG

15A P/POINT

8 IF

6 IH

GR

10 3A

6 3A

9 3A

GR

3

3

2

3 P–POINT Relay

1

5

3

3 L–Y

W–B

GR

1 12 3A

L–Y

L IF1

11 3A 2 P4 Power Outlet (Rear) 1 1 2 C5 Power Outlet (Front)

W–B

2

W–B

W–B

IF1

A

J6 Junction Connector

J7 Junction Connector

A A

IG

IE

108
2004 COROLLA (EWD533U)

W–B

GR

Service Hints P–POINT Relay 3–5 : Closed with ignition SW at ACC or ON position 1–Ground : Always continuity : Parts Location
Code C5 J6 34 35 See Page Code J7 P4 35 35 See Page Code See Page

: Relay Blocks
Code 3 28 See Page Relay Blocks (Relay Block Location) RH R/B (Right Side of the Instrument Panel Reinforcement)

: Junction Block and Wire Harness Connector
Code IF IH 3A 25 28 See Page Junction Block and Wire Harness (Connector Location) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)

: Connector Joining Wire Harness and Wire Harness
Code IF1 42 See Page Joining Wire Harness and Wire Harness (Connector Location) Console Box Wire and Instrument Panel Wire (Under the Instrument Panel Center)

: Ground Points
Code IE IG 40 40 See Page Ground Points Location Behind the Combination Meter Right Kick Panel

109
2004 COROLLA (EWD533U)

Remote Control Mirror
From Power Source System (See Page 48)

15A CIG

8 IF GR 10 3A 8 3A GR

8 B

R6 Remote Control Mirror SW

Left

Right

Up

Down

Left/ Up

Right/ Down

Operation SW

Left

Right

Left

Right

Select SW

HL 5 2

HR 4

VL 3

VR 6

M+ 7

E

R–W

BR–W

22 4B 10 IC2 8 IC2 10 IJ1 8 IJ1

R–W

LG

R

L

21 4B 16 3C

1 MH

3 MV

1 MH

3 MV 14 3C 15 3C W–B BR–W BR–W 9 IJ1 9 IC2 BR–W A J6 Junction Connector IE

R17 Remote Control Mirror LH

M

M

M

M

M+ 2 BR–W

M+ 2 BR–W

110
2004 COROLLA (EWD533U)

R18 Remote Control Mirror RH

W–B

LG

R

L

Service Hints R6 Remote Control Mirror SW 8–6 : Continuity with the operation SW at Down or Right position 6–7 : Continuity with the operation SW at Up or Left position 8–Ground : Approx. 12 volts with the ignition SW at ACC or ON position 7–Ground : Always continuity : Parts Location
Code J6 R6 35 35 See Page Code R17 R18 37 37 See Page Code See Page

: Junction Block and Wire Harness Connector
Code IF 3A 3C 4B 25 28 30 See Page Junction Block and Wire Harness (Connector Location) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement) Instrument Panel Wire and Center J/B (Behind the Combination Meter)

: Connector Joining Wire Harness and Wire Harness
Code IC2 IJ1 40 42 See Page Joining Wire Harness and Wire Harness (Connector Location) Front Door LH Wire and Instrument Panel Wire (Left Kick Panel) Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)

: Ground Points
Code IE 40 See Page Ground Points Location Behind the Combination Meter

111
2004 COROLLA (EWD533U)

Automatic Glare–Resistant EC Mirror with Compass
From Power Source System (See Page 48) * 1 : w/ Moon Roof * 2 : w/o Moon Roof

10A GAUGE

5 IE

B–L 7 I12 Inner Mirror 6 B1 B W–B 1 IE 10 IH W–B A J7 Junction Connector IG (* 1) B

112
2004 COROLLA (EWD533U)

(* 1)

(* 2)

Service Hints I12 Inner Mirror 7–Ground : Approx. 12 volts with the ignition SW at ON position 6–Ground : Always continuity : Parts Location
Code I12 36 See Page Code J7 35 See Page Code See Page

: Junction Block and Wire Harness Connector
Code IE IH 25 25 See Page Junction Block and Wire Harness (Connector Location) Roof Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)

: Ground Points
Code IG 40 See Page Ground Points Location Right Kick Panel

: Splice Points
Code B1 44 See Page Wire Harness with Splice Points Roof Wire Code See Page Wire Harness with Splice Points

113
2004 COROLLA (EWD533U)

Power Window
From Power Source System (See Page 48) 1 B B 7 Front LH Down B DD 9 G B B B 4 M 5 P8 Power Window Motor Front LH G

10A GAUGE

30A POWER

D11 Power Window Master SW

6 B

2 B B 2 IC3 B

1 IC1 B 1 5 P/W Relay 6 4B 2 3 7 IG B 10 4B 8 4B

IC 9 4B

4 IF

18 ID

7 4B

W–B

B

B

B

E 1 3

E 4

DU

W–B

W–B

B4

6 IC1

W–B

W–B

A W–B A J6 Junction Connector IE

114
2004 COROLLA (EWD533U)

Y

Y

D11 Power Window Master SW Front RH Rear LH Rear RH

Window Lock SW Lock

Normal

PU 18 G–R 15 L–W

PD 12 R–G

RLU 13 L–B

RLD 10 R–B

RRU 16 L–R

RRD

1 IC3

7 IC3

6 IC3

5 IC3

4 IC3

3 IC3

R–G

3 ID1

4 ID1

B B B L–W R–G G–R R–B L–R 5 BB1 L–R L–B

L–B

6

IJ2 B

4

IJ2 G–R

5

IJ2 L–W

2 BA1 B

B

4 BA1 R–B

5 BA1 L–R

2 BB1 B

B

4 BB1 R–B

P5 Power Window Control SW Front RH

P6 Power Window Control SW Rear LH

5 4 B Up SU

2 SD Down

5 4 B Up SU

2 SD Down

5 4 B Up SU

2 SD Down

U 3 Y

D 1 G

U 3 Y

D 1 G

U 3 Y

D 1 G

4

M

5

5

M

4

5

M

4

P9 Power Window Motor Front RH

P10 Power Window Motor Rear LH

P11 Power Window Motor Rear RH

P7 Power Window Control SW Rear RH

115
2004 COROLLA (EWD533U)

Power Window
System Outline When the ignition SW is turned on, the current flows through the GAUGE fuse to TERMINAL 1 of the P/W relay to TERMINAL 2 to GROUND. This activates the relay and the current flows through the POWER fuse to TERMINAL 5 of the relay to TERMINAL 3 to TERMINAL B of the power window master SW, TERMINAL 4 of the power window control SW. 1. Manual Operation (Driver’s Window) With the ignition SW turned on and with the power window master SW (Front LH) in Up position, the current flowing to TERMINAL B of the power window master SW flows to TERMINAL DU of the master SW to TERMINAL 4 of the power window motor to TERMINAL 5 to TERMINAL DD of the master SW to TERMINAL E to GROUND and rotates the power window motor in the up direction. The window ascends only while the SW is being pulled. In down operation, the flows of current from TERMINAL B of the power window master SW to TERMINAL DD to TERMINAL 5 of the motor to TERMINAL 4 to TERMINAL DU of the master SW to TERMINAL E to GROUND, flowing in the opposite direction to manual up operation and rotating the motor in reverse, thus opening the window. 2. Auto Down Operation (Driver’s Window) When the front LH window control SW in the power window master SW is pushed strongly on the down side, current flows from TERMINAL B of the master SW to TERMINAL DD to TERMINAL 5 of the power window motor to TERMINAL 4 to TERMINAL DU of the master SW to TERMINAL E to GROUND. Because the hold circuit inside the master SW keeps the relay on the down side activated, the power window motor continues operating even if the power window master SW is released. When the driver’s window is fully opened, the hold circuit turns off and the relay on the down side turns off, and auto down operation is completed. 3. Stopping of Auto Down Operation (Driver’s Window) When the master SW (Front LH) is pulled to the up side during auto down operation, a ground circuit opens in the master SW and current does not flow from TERMINAL DU of the master SW to TERMINAL E, so the motor stops, causing auto down operation to stop. If the master SW is pulled continuously, the motor rotates in the up direction in manual up operation. 4. Manual Operation (Front RH Window) With the power window control SW (Front RH) pulled to the up side, current flowing from TERMINAL 4 of the power window control SW flows to TERMINAL 3 to TERMINAL 4 of the power window motor to TERMINAL 5 to TERMINAL 1 of the power window control SW to TERMINAL 2 to TERMINAL PD of the master SW to TERMINAL E to GROUND and rotates the power window motor (Front RH) in the up direction. Up operation continues only while the power window control SW is pulled to the up side. When the window descends, the current flowing to the motor flows in the opposite direction, from TERMINAL 4 to TERMINAL 5, and the motor rotates in reverse. When the window lock SW is pushed to the lock side, the ground circuit to the passenger’s window becomes open. As a result, even if Open/Close operation of the passenger’s window is attempted, the current from TERMINAL E of the power window master SW is not grounded and the motor does not rotate, so the passenger’s window can not be operated and window lock occurs. 5. Manual Operation (Rear LH, Rear RH Window) With the power window control SW (Rear LH, rear RH) pulled to the up side, current flowing from TERMINAL 4 of the power window control SW flows to TERMINAL 3 to TERMINAL 5 of the power window motor to TERMINAL 4 to TERMINAL 1 of the power window control SW to TERMINAL 2 to TERMINAL RLD, RRD of the master SW to TERMINAL E to GROUND and rotates the power window motor (Rear LH, rear RH) in the up direction. Up operation continues only while the power window control SW is pulled to the up side. When the window descends, the current flowing to the motor flows in the opposite direction, from TERMINAL 5 to TERMINAL 4, and the motor rotates in reverse. When the window lock SW is pushed to the lock side, the ground circuit to the passenger’s window becomes open. As a result, even if Open/Close operation of the passenger’s window is attempted, the current from TERMINAL E of the power window master SW is not grounded and the motor does not rotate, so the passenger’s window can not be operated and window lock occurs. Service Hints D11 Power Window Master SW B–Ground : Approx. 12 volts with the ignition SW at ON position DU–Ground : Approx. 12 volts with the ignition SW on and master SW (Front LH window) at Up position DD–Ground : Approx. 12 volts with the ignition SW on and master SW (Front LH window) at Down or Auto Down position E–Ground : Always continuity Window Lock SW Open with window lock SW at Lock position

116
2004 COROLLA (EWD533U)

: Parts Location
Code D11 J6 P5 36 35 37 See Page Code P6 P7 P8 37 37 37 See Page Code P9 P10 P11 37 37 37 See Page

: Junction Block and Wire Harness Connector
Code ID IF IG 4B 25 25 30 See Page Junction Block and Wire Harness (Connector Location) Floor Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and Center J/B (Behind the Combination Meter)

: Connector Joining Wire Harness and Wire Harness
Code IC1 IC3 ID1 IJ2 BA1 BB1 40 42 42 44 44 See Page Joining Wire Harness and Wire Harness (Connector Location) Front Door LH Wire and Instrument Panel Wire (Left Kick Panel) Instrument Panel Wire and Floor Wire (Left Kick Panel) Front Door RH Wire and Instrument Panel Wire (Right Kick Panel) Rear Door LH Wire and Floor Wire (Left Center Pillar) Rear Door RH Wire and Instrument Panel Wire (Right Center Pillar)

: Ground Points
Code IE 40 See Page Ground Points Location Behind the Combination Meter

: Splice Points
Code B4 44 See Page Wire Harness with Splice Points Front Door LH Wire Code See Page Wire Harness with Splice Points

117
2004 COROLLA (EWD533U)

Door Lock Control
From Power Source System (See Page 48)

25A DOOR

1 +B

GND 9

L1 9 A

UL1 8 A I11(A) Integration Relay

L–W

10 IH W–B

4 IF W–B

22 4A

19 4A

20 4A

17 4A

L

21 4A

18 4A

L–W

L–W

L

5 IC1 L–W

4 IC1 D10(B), D11(A) Door Lock Control SW Front LH L

7

IJ2 L–W

12

L IJ2 D12 Door Lock Control SW Front RH L 5 Unlock 3 W–B

5 A 6 B Lock

8 A (* 1) 5 B (* 2) Unlock

6 Lock W–B

3 A (* 1) 3 B (* 2) W–B

B3

W–B

B4 W–B W–B

W–B

W–B

1 W–B

IJ2 W–B W–B

6 IC1 W–B A J6 Junction Connector IE

A

A J7 Junction Connector

A

IG

118
2004 COROLLA (EWD533U)

* 1 : w/ Power Window * 2 : w/o Power Window

UL3 6 A

LSWD 19 A

ACTD 1 A

L2 7 A

UL2 5 A

LSWP 18 A I11(A) Integration Relay

G

2 4A

3 4A

1 4A L R W–R L–Y L–B W G G R L L

11 IC1 G

10 IC1 L–Y

3 IC1 W

8 IC1 R

9 IC1 L

11

IJ2 G

10

IJ2 L–B

3

W–R IJ2 W–R

L–Y

L–B

W

G

R

8

IJ2 R

9

IJ2 L 4

9

10

8 Detection

1

4

6

5

7 Detection

1

Unlock

M

Unlock

Lock

Lock

M

7

W–B

D8 Door Key Lock and Unlock SW Front LH Door Lock Motor Front LH Door Unlock Detection SW Front LH

8

W–B

D9 Door Key Lock and Unlock SW Front RH Door Lock Motor Front RH Door Unlock Detection SW Front RH

W–B

119
2004 COROLLA (EWD533U)

Door Lock Control

ACT– 3

ACT+ 2 I11(A) Integration Relay

5 IK R

2 IK L

20 ID R

9 ID L 3 BA1 L 4

6 4A

10 4A

8 4A L R L

4 4A

9 4A

5 4A

7 4A

R

8 BB1 R

3 BB1 L

L

8 BA1 R 1 M

1

4

M

D14 Door Lock Motor Rear RH

D13 Door Lock Motor Rear LH

120
2004 COROLLA (EWD533U)

1 ID

DCTY

D4 Door Courtesy SW Front LH

D5 Door Courtesy SW Front RH

I11(A) Integration Relay

D6 Door Courtesy SW Rear LH

D7 Door Courtesy SW Rear RH

1 5 13 A PCTY 1 6 14 ID PRCTY 1 15 ID 1 8 R–Y R–B R–W

R–W

1

2

4

W–B IJ U1 Unlock Warning SW

15 4A

16 4A

L–B

L–B

A

KSW

IE

J6 Junction Connector

2004 COROLLA (EWD533U)

121

Door Lock Control
System Outline The current always flows to TERMINAL 1 of the integration relay through the DOOR fuse. 1. Manual Lock Operation When the door lock control SW or door key lock and unlock SW are operated to Lock position, a lock signal is input to TERMINAL (A) 9 or (A) 7 of the integration relay and causes the relay to function. The current flows from TERMINAL 1 of the relay to TERMINAL 2 to the door lock motors to TERMINALS (A) 1 and 3 of the relay to TERMINAL 9 to GROUND and the door lock motors locks the door. 2. Manual Unlock Operation When the door lock control SW or door key lock and unlock SW are operated to Unlock position, an unlock signal is input to TERMINAL (A) 8, (A) 6 or (A) 5 of the integration relay and causes the relay to function. The current flows from TERMINAL 1 of the relay to TERMINALS (A) 1 and 3 to the door lock motors to TERMINAL 2 of the relay to TERMINAL 9 to GROUND and the door lock motors unlocks the door. 3. Double Operation Unlock Operation When the door key lock and unlock SW LH is turned to the unlock side, only the driver’s door is unlocked. By turning the door key lock and unlock SW LH to the unlock side, a signal is input to TERMINAL (A) 6 of the relay, and if the signal is input again within 3 seconds by turning the SW to the unlock side again, current flows from TERMINAL 3 of the integration relay to the door lock motors to TERMINAL 2 of the relay to TERMINAL 9 to GROUND, causing the door lock motors to operate and unlock the doors. 4. Ignition Key Reminder Operation ∗ Operating door lock knob (Operation of door lock motors) With the ignition key in the cylinder (Unlock warning SW on), when the door is opened and locked using door lock knob (Door lock motor), the door is locked once but each door is unlocked soon by the function of the relay. As a result, the current flows from TERMINAL 1 of the integration relay to TERMINALS (A) 1 and 3 to the door lock motors to TERMINAL 2 of the relay to TERMINAL 9 to GROUND and unlocks all the doors. ∗ Operating door lock control SW or door key lock and unlock SW With the ignition key in the cylinder (Unlock warning SW on), when the door is opened and locked using door lock control SW or key SW, the door is locked once but each door is unlocked by the function of SW contained in motors, and the signal is input to TERMINAL (A) 19 of the relay. According to this input signal, the current flows from TERMINAL 1 of the relay to TERMINALS (A) 1 and 3 to the door lock motors to TERMINAL 2 of the relay to TERMINAL 9 to GROUND and unlocks all the doors. ∗ In case of key less lock With the ignition the key in the cylinder (Unlock warning SW on), when the unlock function is disturbed, for example pushing the door lock knob etc., the door holds on lock condition. After closing the door after, door courtesy SW inputs the signal into TERMINAL 5 or 6 or (A) 13 of the integration relay. By this input signal, the relay works and current flows from TERMINAL 1 of the relay to TERMINALS (A) 1 and 3 to the door lock motors to TERMINAL 2 of the relay to TERMINAL 9 to GROUND and unlocks all the doors.

122
2004 COROLLA (EWD533U)

Service Hints I11 (A) Integration Relay 9–Ground : Always continuity 5–Ground : Continuity with the driver’s door open 1–Ground : Always approx. 12 volts 2–Ground : Approx. 12 volts 0.2 seconds with following operation ∗ Door lock control SW locked ∗ Locking the driver’s, front passenger’s door cylinder with the key (A) 9–Ground : Continuity with the door lock control SW locked (A)13–Ground : Continuity with the front passenger’s door open (A)19–Ground : Continuity with the driver’s door lock knob unlocked (A) 8–Ground : Continuity with the door lock control SW unlocked (A) 5–Ground : Continuity with the front passenger’s door lock cylinder unlock with the key (A) 6–Ground : Continuity with the driver’s door lock cylinder unlocked with the key (A) 7–Ground : Continuity with the driver’s, front passenger’s door lock cylinder locked with the key (A) 1 or 3–Ground : Approx. 12 volts 0.2 seconds with following operation ∗ Door lock control SW unlocked ∗ Door lock control SW locked with the ignition key in cylinder and the driver’s door open (Ignition key reminder function) ∗ Door lock knob locked with the ignition key in cylinder and the driver’s door open (Ignition key reminder function) ∗ Unlocking the driver’s, front passenger’s door cylinder with the key D4, D5, D6, D7 Door Courtesy SW Front LH, RH, Rear LH, RH 1–Ground : Closed with the door open U1 Unlock Warning SW 1–2 : Closed with the ignition key in cylinder : Parts Location
Code D4 D5 D6 D7 D8 36 36 36 36 36 D10 D11 D12 D13 See Page Code D9 B A 36 36 36 36 36 I11 J6 J7 U1 See Page Code D14 A 36 35 35 35 35 See Page

: Junction Block and Wire Harness Connector
Code ID IF IH IJ IK 4A 24 30 Instrument Panel Wire and Center J/B (Behind the Combination Meter) 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) 25 See Page Junction Block and Wire Harness (Connector Location) Floor Wire and Instrument Panel J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness
Code IC1 IJ2 BA1 BB1 40 42 44 44 See Page Joining Wire Harness and Wire Harness (Connector Location) Front Door LH Wire and Instrument Panel Wire (Left Kick Panel) Front Door RH Wire and Instrument Panel Wire (Right Kick Panel) Rear Door LH Wire and Floor Wire (Left Center Pillar) Rear Door RH Wire and Instrument Panel Wire (Right Center Pillar)

: Ground Points
Code IE IG 40 40 See Page Ground Points Location Behind the Combination Meter Right Kick Panel

123
2004 COROLLA (EWD533U)

Door Lock Control
: Splice Points
Code B3 44 See Page Wire Harness with Splice Points Front Door RH Wire Code B4 44 See Page Wire Harness with Splice Points Front Door LH Wire

124
2004 COROLLA (EWD533U)

Memo

125
2004 COROLLA (EWD533U)

Wireless Door Lock Control
From Power Source System (See Page 48)

25A DOOR

1 +B

GND 9

L1 9 A

UL1 8 A I11(A) Integration Relay

L–W

10 IH W–B

4 IF W–B

22 4A

19 4A

20 4A

17 4A

L

21 4A

18 4A

L–W

L–W

L

5 IC1 L–W

4 IC1 D10(B), D11(A) Door Lock Control SW Front LH L

7

IJ2 L–W

12

L IJ2 D12 Door Lock Control SW Front RH L 5 Unlock 3 W–B

5 A 6 B Lock

8 A (* 1) 5 B (* 2) Unlock

6 Lock W–B

3 A (* 1) 3 B (* 2) W–B

B3

W–B

B4 W–B W–B

W–B

W–B

1 W–B

IJ2 W–B W–B

6 IC1 W–B A J6 Junction Connector IE

A

A J7 Junction Connector

A

IG

126
2004 COROLLA (EWD533U)

* 1 : w/ Power Window * 2 : w/o Power Window

UL3 6 A

LSWD 19 A

ACTD 1 A

L2 7 A

UL2 5 A

LSWP 18 A I11(A) Integration Relay

G

2 4A

3 4A

1 4A L R W–R L–Y L–B W G G R L L

11 IC1 G

10 IC1 L–Y

3 IC1 W

8 IC1 R

9 IC1 L

11

IJ2 G

10

IJ2 L–B

3

W–R IJ2 W–R

L–Y

L–B

W

G

R

8

IJ2 R

9

IJ2 L 4

9

10

8 Detection

1

4

6

5

7 Detection

1

Unlock

M

Unlock

Lock

Lock

M

7

W–B

D8 Door Key Lock and Unlock SW Front LH Door Lock Motor Front LH Door Unlock Detection SW Front LH

8

W–B

D9 Door Key Lock and Unlock SW Front RH Door Lock Motor Front RH Door Unlock Detection SW Front RH

W–B

127
2004 COROLLA (EWD533U)

Wireless Door Lock Control

I11(A) Integration Relay

ACT– 3

ACT+ 2

DCTY 5

PCTY 13 A

PRCTY 6

5 IK R

2 IK L

20 ID R

9 ID L

1 ID

14 ID

15 ID

6 4A

10 4A

8 4A L

4 4A

9 4A

5 4A

7 4A

R–W

R–W

R–B

R

L

L

R

1

4

1

1 4

1

1

1

M

M

D14 Door Lock Motor Rear RH

D13 Door Lock Motor Rear LH

128
2004 COROLLA (EWD533U)

D7 Door Courtesy SW Rear RH

D4 Door Courtesy SW Front LH

D6 Door Courtesy SW Rear LH

8 BB1 R

3 BB1 L

8 BA1 R

3 BA1 L

D5 Door Courtesy SW Front RH

R–Y

From Power Source System (See Page 48) 1 40A HEAD MAIN 2 I11(A) Integration Relay 1 2 1 1 1

10A HORN

15A DOME

2 1

R

B–W

B–W

R

1 HAZ 25 A KSW 4 RDA 7 PRG 8 HORN 10 A G–Y HRLY 11 A 1 R 3

1

1

1

2 HEAD Relay

3 HORN Relay

8 IJ

8 ID

10 ID 2 5 1 5

Y–B

L–B

11 4A

5 3C 1 1 G–Y R–B 1 B 1 7 IC

1 3C

16 4A 13 4A G–Y 6 3C R 4 R–Y

IA2

18 IA5 13 ID

3 3C

15 4A

7 H G–Y Y–B L–R L–B

R–Y

6 H–LP D2 Daytime Running Light Relay L–Y

T2 Turn Signal Flasher Relay

8 EHW

2

1 2 RDA 3 PRG 5 +B D3 Door Control Receiver

U1 Unlock Warning SW

GND 1

W–B

A B

W–B

J 8(A), J 9(B) Junction Connector

A A

J6 Junction Connector IE

W–B

A

BH

L–W

129
2004 COROLLA (EWD533U)

Wireless Door Lock Control
System Outline Door lock control (Lock and unlock) and panic control (TVIP alarm and flash) is performed by remote control, without the ignition key inserted in the door key cylinder, using low–power electrical waves emitted by a transmitter. 1. Wireless Door Lock or Unlock Normal Operation With the ignition key not inserted into the ignition key cylinder (Unlock warning SW off) and all the doors completely closed, when the lock or unlock button (Transmitter) is pushed, the door control receiver receives the electrical waves from the transmitter, and sends a signal to the integration relay causing it to operate. As a result, the integration relay judges whether the door is locked or unlocked based on the signal from the door lock motor and door unlock detection SW, and sends a signal to switch the condition from lock to unlock or vice versa, causing the door lock motor to operate. 2. Visual Confirmation of Lock or Unlock If all doors indicate that they are locked after the lock command, parking lights and taillights will flash once. If any door indicates that it is open after the unlock command, parking lights and taillights will flash twice. 3. Wireless Door Unlock Operation Pushing the unlock button (Transmitter) once, driver’s door is unlocked. Furthermore, pushing the button again within 3 seconds, the other doors are unlocked. 4. Automatic Lock Operation With the ignition key not inserted into the ignition key cylinder (Unlock warning SW off) and all the doors completely closed, after pushing the button (Transmitter) to unlock all the doors, if a door is not opened within 30 seconds, all the doors will be automatically relocked. 5. Wireless Control Stop Function If a door is open (Door courtesy SW on), a signal is input from the door courtesy SW to the integration relay stopping wireless door lock or unlock. If the ignition key is in the ignition key cylinder (Unlock warning SW on), the unlock warning SW inputs a signal to the integration relay stopping wireless door lock or unlock. 6. Repeat Function In case an appropriate lock detection signal is not received after outputting a lock signal when pushing the lock button (Transmitter), 1 seconds later, the integration relay output the lock signal again. 7. Remote Panic Operation Panic will function when doors are locked or unlocked, open or closed. When the panic button (Transmitter) is pushed once, theft alarm sounds and headlights and taillights flash. Then, the panic or the unlock button (Transmitter) is pushed once more, sounding and flashing will stop. Panic will not function when ignition key is in ignition key cylinder.

130
2004 COROLLA (EWD533U)

Service Hints I11 (A) Integration Relay 9–Ground : Always continuity 5–Ground : Continuity with the driver’s door open 1–Ground : Always approx. 12 volts 2–Ground : Approx. 12 volts 0.2 seconds with following operation ∗ Door lock control SW locked ∗ Locking the driver’s, front passenger’s door cylinder with the key (A) 9–Ground : Continuity with the door lock control SW locked (A)13–Ground : Continuity with the front passenger’s door open (A)19–Ground : Continuity with the driver’s door lock knob unlocked (A) 8–Ground : Continuity with the door lock control SW unlocked (A) 5–Ground : Continuity with the front passenger’s door lock cylinder unlock with the key (A) 6–Ground : Continuity with the driver’s door lock cylinder unlocked with the key (A) 7–Ground : Continuity with the driver’s, front passenger’s door lock cylinder locked with the key (A) 1 or 3–Ground : Approx. 12 volts 0.2 seconds with following operation ∗ Door lock control SW unlocked ∗ Door lock control SW locked with the ignition key in cylinder and the driver’s door open (Ignition key reminder function) ∗ Door lock knob locked with the ignition key in cylinder and the driver’s door open (Ignition key reminder function) ∗ Unlocking the driver’s, front passenger’s door cylinder with the key D4, D5, D6, D7 Door Courtesy SW Front LH, RH, Rear LH, RH 1–Ground : Closed with the door open U1 Unlock Warning SW 1–2 : Closed with the ignition key in cylinder D3 Door Control Receiver 5–Ground : Always approx. 12 volts 1–Ground : Always continuity : Parts Location
Code D2 D3 D4 D5 D6 D7 D8 34 36 36 36 36 36 36 I11 D10 D11 D12 D13 D14 A See Page Code D9 B A 36 36 36 36 36 36 35 J8 J9 T2 U1 See Page Code J6 J7 A B 35 35 36 36 35 35 See Page

: Relay Blocks
Code 1 22 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector
Code IC ID IF IH IJ IK 3C 4A 24 28 30 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement) Instrument Panel Wire and Center J/B (Behind the Combination Meter) 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) 25 25 See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel) Floor Wire and Instrument Panel J/B (Lower Finish Panel)

131
2004 COROLLA (EWD533U)

Wireless Door Lock Control
: Connector Joining Wire Harness and Wire Harness
Code IA2 IA5 IC1 IJ2 BA1 BB1 40 40 42 44 44 See Page Joining Wire Harness and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement) Front Door LH Wire and Instrument Panel Wire (Left Kick Panel) Front Door RH Wire and Instrument Panel Wire (Right Kick Panel) Rear Door LH Wire and Floor Wire (Left Center Pillar) Rear Door RH Wire and Instrument Panel Wire (Right Center Pillar)

: Ground Points
Code IE IG BH 40 40 44 See Page Ground Points Location Behind the Combination Meter Right Kick Panel Under the Left Quarter Pillar

: Splice Points
Code B3 44 See Page Wire Harness with Splice Points Front Door RH Wire Code B4 44 See Page Wire Harness with Splice Points Front Door LH Wire

132
2004 COROLLA (EWD533U)

Memo

133
2004 COROLLA (EWD533U)

TVIP System
From Power Source System (See Page 48)

5 AM2

IG2 ST2 4 R 10A ECU–IG I7 (M/T) (A/T) 10A ECU–B

I10 Ignition SW B

R

R

9 IF

1 IH

3

IA2

12

II2

(A/T)

(M/T)

R A R

6 IM

J2 Junction Connector

B–W

15A AM2

A

(A/T)

C8 Clutch Start SW

3 3 IM

1 ST Relay B–W

1

R

11 IL

9 P N 6

A2 Park/Neutral Position SW

R–B

I7

B–W

B–R

I2

R–B

5

2

2

B–W

2

IA4 B 1 IM B–R B 4 IF W–B 10 IH W–B B–R (A/T)

R–B

B–R

7 2

II1

S8 Starter Cut Relay

B

1

3

1

G

G (A/T) B

J2 Junction Connector 8 TRIG

(M/T)

1 S+B

30A MAIN

4

2

B 1

B 10 IA5 11 II2 G3 Glass Breakage Sensor ECU (M/T) B B

1

B

S3 Starter

I9

FL MAIN 2. 0L

W–B W–B W–B Battery W–B W–B W–B W–B W–B

A

A

A

A W–B J6 Junction Connector

IE

134
2004 COROLLA (EWD533U)

B

1 1A

(A/T)

T3 TVIP ECU

IG 10

+B1 2

SRLY 21

IOUT 11 29

E

IND 25

DSWL 35

KSW 12

HORN 5

CTY 19

DSWD 40

W–B

B–W

R–W

R–W

11 ID2

B–W R–W J10 Junction Connector

R–B A

A

B–R R–W W–B L–B

L4 Luggage Compartment Light SW

I8 W–B L

I8 1

2

3 IOUT

6 GND R–W W–B W–B

1 19 3A W–B

MIC G3 Glass Breakage Sensor ECU 4 (Shielded)

GMIC 5

W

11 3A 3 4 Security 1 2 W–B R–W R G–Y

S4 Security Indicator

Microphone

W–B W–B W–B W–B W–B A W–B A A J7 Junction Connector IG W–B

U1 Unlock Warning SW

R–W

B–R

R–B

G–Y

L–B

R

L

135
2004 COROLLA (EWD533U)

136
R 8 8 Y–B HAZD T3 TVIP ECU Y–B R–W 3 3C 2 3C EHW T2 Turn Signal Flasher Relay 6 6 3C 5 3C R R HEAD 16 9 11 IC1 Lock L2 I1 7 W–B 10 IC1 10 17 L–Y UL3 L–Y L–Y G G G Unlock G 37 3 IC1 LSWD 8 W W W Detection D8 Door Key Lock and Unlock SW Front LH Door Unlock Detection SW Front LH 11 6 1 4A 2 4A Lock IJ2 8 W–B 10 5 L–B IJ2 L–B G G 18 L–B UL2 Unlock 3 38 LSWP 7 W–R IJ2 W–R W–R Detection D9 Door Key Lock and Unlock SW Front RH Door Unlock Detection SW Front RH 9 DMLP R–W 28 W IRSG 2 1 2 1 R–Y 6 IE L–W L–W 1 4 IE 7 IC 15A DOME I13 Interior Light R–W From Power Source System (See Page 48) 4 Door 7 Off On W R7 Rheostat 3 R–B IG 3 R R R–W

G–Y

TVIP System

W–B

W–B

2004 COROLLA (EWD533U)

W–B

W–B

6 IC1

1

IJ2

W–B

21 4B

19 4B

W–B

G–Y

From Power Source System (See Page 48) 1 40A HEAD MAIN 2 1 2 1 1

I11(A) Integration Relay

10A HORN

TVSS 26 A

DCTY 5

PCTY 13 A

PRCTY 6 R B–W

1 W 3 IL R–W 1 ID R–W 4 IK R 14 ID R–B 15 ID R–Y 1 3

1

1

1

1 HEAD Relay

5 HORN Relay

2 R–W

5

2

3

1 R–Y R–B

1 G–Y

1

1

4 D5 Door Courtesy SW Front RH D7 Door Courtesy SW Rear RH D4 Door Courtesy SW Front LH D6 Door Courtesy SW Rear LH

IA2 18 R–Y IA5

G–Y

B–W B 1 H6 Horn 13 4A 12 4A

1

1

1

1

6 D2 Daytime Running Light Relay H–LP

H R R–W R G–Y 7

R

137
2004 COROLLA (EWD533U)

TVIP System
Service Hints T3 TVIP ECU 10–Ground : Approx. 12 volts with the ignition SW at ON position 2–Ground : Always approx. 12 volts 29–Ground : Always continuity : Parts Location
Code A2 C8 D2 D4 D5 D6 D7 D8 D9 32 34 34 36 36 36 36 36 36 I11 I13 J2 J6 J7 J10 See Page Code G3 H6 I10 A 35 32 35 35 36 35 35 35 36 See Page Code L4 R7 S3 S4 S8 T2 T3 U1 36 35 33 35 35 35 35 35 See Page

: Relay Blocks
Code 1 22 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector
Code IC ID IE IF IG IH IK IL IM 1A 3A 3C 4A 4B 22 28 30 Engine Wire and Engine Room J/B (Engine Compartment Left) Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement) Instrument Panel Wire and Center J/B (Behind the Combination Meter) 24 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) 25 25 25 See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel) Floor Wire and Instrument Panel J/B (Lower Finish Panel) Roof Wire and Instrument Panel J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness
Code IA2 IA4 IA5 IC1 ID2 II1 II2 IJ2 40 42 42 42 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel) Instrument Panel Wire and Floor Wire (Left Kick Panel) Engine Wire and Instrument Panel Wire (Blower Unit RH) Front Door RH Wire and Instrument Panel Wire (Right Kick Panel) 40 Engine Room Main Wire and Instrument Panel Wire ( g (Left Side of the Instrument Panel Reinforcement) ) See Page Joining Wire Harness and Wire Harness (Connector Location)

: Ground Points
Code IE IG 40 40 See Page Ground Points Location Behind the Combination Meter Right Kick Panel

138
2004 COROLLA (EWD533U)

: Splice Points
Code I1 I2 I7 42 Instrument Panel Wire See Page Wire Harness with Splice Points Code I8 I9 42 See Page Wire Harness with Splice Points Instrument Panel Wire

139
2004 COROLLA (EWD533U)

Moon Roof
From Power Source System (See Page 48) 1

30A POWER

10A GAUGE

2

5

1 P/W Relay

M2 Moon Roof Control Relay and SW

3

2

2 IE B

4 IF W–B

10 IH W–B

1 IE W–B

Open Close Up Down

IG 2 B 6

LS1 7

LS2

MTR+ 4 5

MTR– 8

GND

G–W

5

6

1

2

LS1

LS2

M

4 W–B

3 W–B

M3 Moon Roof Motor and Limit SW

W–B

W–B

W–B J6 Junction Connector A A J7 Junction Connector IE IG

B2

W–B

B2

W–B

140
2004 COROLLA (EWD533U)

W–B

R–L

G

R

System Outline The moon roof can be operated when the ignition SW is turned to ON position. 1. Slide Open Operation The moon roof fully opens automatically by pressing the slide open button of the moon roof control SW once. If the moon roof control switch is pressed again when the moon roof is operating, the movement of the moon roof stops. The operation of slide open is not worked when the moon roof at tilt up position. 2. Slide Close Operation If you keep pressing the slide close button of the moon roof control SW when the moon roof is open, the moon roof closes half and stops the operation once. If you keep pressing the slide close once again, the moon roof fully closes. 3. Tilt Up Operation If you press the tilt up button of the moon roof control SW, the moon roof is tilted up. However, the moon roof is not tilted up when it is open 4. Tilt Down Operation If you press the tilt down button when the tilt up of the moon roof control SW is pressed, the moon roof is tilted down. Service Hints P/W Relay 5–3 : Closed with the ignition SW at ON position M2 Moon Roof Control Relay and SW 2–Ground : Approx. 12 volts with the ignition SW at ON position 8–Ground : Always continuity : Parts Location
Code J6 J7 35 35 See Page Code M2 M3 37 37 See Page Code See Page

: Junction Block and Wire Harness Connector
Code IE IF IH 25 25 See Page Junction Block and Wire Harness (Connector Location) Roof Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)

: Ground Points
Code IE IG 40 40 See Page Ground Points Location Behind the Combination Meter Right Kick Panel

: Splice Points
Code B2 44 See Page Wire Harness with Splice Points Roof Wire Code See Page Wire Harness with Splice Points

141
2004 COROLLA (EWD533U)

Electronically Controlled Transmission

5 AM2

IG2 6 ST2

B–W

5 IL 12 IC

8 IK

B–O

B–O

B–W I10 Ignition SW B 10 EA1

BR 6 IM

15A AM2

BR

BR E2 Engine Coolant Temp. Sensor

B–W

R–W

H A

H A J 2(A), J 3(B) Junction Connector

1

3 IM B–R

3 EA1

1

IA2

F B

2

B A

B A

J 2(A) Junction Connector Y 18 A VC SL 13 B L–W Y L 2 SL Y 6 S2 B

2 IA4 B–W R–W BR W 19 A THW SLT– 16 A S1 15 B R–Y 3 S1 W SLT– GR P 4

R–W

B–R

R–W 3 D 28 A E2

1

1

1

1

BATT

5 2 2

1 EFI Relay E 3(A), E 4(B), E 5(C), E 6(D) Engine Control Module

30A MAIN

15A EFI 3 2

1

1 1 1

+B 1 D

SLT+ 17 A R–W 1 SLT+ G

1 1A B B 3 4B FL MAIN 2. 0L W–B B 1 4B B Battery 9 EA1 B 6 II1

E1 Electronically Controlled Transmission Solenoid

ED

142
2004 COROLLA (EWD533U)

B–O R–W

From Power Source System (See Page 48) B–O * 1 : w/ Cruise Control

15A STOP

14 IC R–W

R–W 3 S9 Stop Light SW RB A2 A/T Shift Lever Position SW

2 BR

D1 Data Link Connector 3 TC 13

1 G–W

LL 8 LG–B

2L 4 LG

RL 2 R–B

BR

5 IC 2 1 G–W IL

T1 Throttle Position Sensor

2

II1

5

II1

13

II2 R–B

3 4C 10 IK

1

3 13 3C LG–B LG

Y LG 11 3C G–W

R–B

4 4C P–B

9 IK R–B 8 C L 9 C 2 11 C R

21 A VTA

19 C STP

20 D TC

E 3(A), E 4(B), E 5(C), E 6(D) Engine Control Module

S2 14 B

OD1 18 C

ODMS 29 C LG–B

EC 28 B W–B

E1 7 B

E03 5 B

E01 7 A

P–B E02 6 A

SPD 17 C

ODLP 7 C

L

V–W

W–B

W–B

J 2(A), J 3(B) Junction Connector

A10 O/D Main SW

D A

D A

A A

J 4(A) Junction Connector

C A

C A

J 4(A), J 5(B) Junction Connector

LG LG V–W

2

4 R–Y (* 1) W–B

10

II2

A A

B B (* 1) L

BR

L

B B 17 3A

3

II1 W–B W–B EC W–B BR J7 Junction Connector EB

ECT

OD

W–B A

6

(* 1)

L

11 3A 14

A

C14 Cruise Control ECU

IG

143
2004 COROLLA (EWD533U)

Electronically Controlled Transmission
From Power Source System (See Page 48) * 2 : w/o ABS

B–O R–W

10A GAUGE

2 IG

22 3B

16 3B R–W B–O

R–W

20 3B R–W 14 R–W II2 R–W B A J 4(A), J 5(B) Junction Connector C B R–W 1 V1 Vehicle Speed Sensor (Combination Meter) J 2(A), J 3(B) Junction Connector (* 2) B A

32

4

O/D OFF

3 LG

10 V–W

C9 Combination Meter

Speedometer

9 W–G W–G I2 W–G (* 2) (*2) (* 2) (* 2)

8 4C

9 4C 14 V–W IA6 4 II2 W–G W–G 3 17 V–W SP1 S1 Skid Control ECU with Actuator 2 BR C A C B BR

LG

EB

144
2004 COROLLA (EWD533U)

System Outline Previous automatic transaxle have selected each gear shift using mechanically controlled throttle hydraulic pressure, governor hydraulic pressure and lock–up hydraulic pressure. The electronically controlled transmission, however, controls the line pressure and lock–up pressure etc. electrically, through the solenoid valve. The engine control module controls each solenoid valve based on the input signals from each sensor, which makes smooth driving possible by shift selection for each gear that is most appropriate to the driving conditions at that time. 1. Gear Shift Operation During driving, the engine control module selects the shift for each gear which is most appropriate to the driving conditions, based on input signals from the engine coolant temp. sensor to TERMINAL THW of the engine control module, and also the input signals to TERMINAL SPD of the engine control module from the vehicle speed sensor devoted to the electronically controlled transmission. Current is then output to the electronically controlled transmission solenoid. When shifting to 1st speed, the current flows from TERMINAL S1 of the engine control module to TERMINAL 3 of the solenoid to GROUND, and from TERMINAL S2 of the engine control module to TERMINAL 6 of the electronically controlled transmission solenoid to GROUND, and continuity to the No.1 and No.2 solenoid causes the shift. For 2nd speed, the current flows from TERMINAL S1 of the engine control module to TERMINAL 3 of the solenoid to GROUND, and from TERMINAL S2 of the engine control module to TERMINAL 6 of the solenoid to GROUND, and continuity to solenoids No.1 and No.2 causes the shift. For 3rd speed, there is no continuity to No. 1 solenoid, only to No. 2, causing the shift. Shifting into 4th speed (Overdrive) takes place when there is no continuity to both No.1 and No.2 solenoid. 2. Stop Light SW Circuit If the brake pedal is depressed (Stop light SW on ) when driving in lock–up condition, a signal is input to TERMINAL STP of the engine control module, the engine control module operates and continuity to the lock–up solenoid is cut. 3. Overdrive Circuit ∗ Overdrive on When the engine is turned on from ignition off, the engine control module turns the O/D on. When the O/D main SW is pushed while the O/D is off, a signal is input into TERMINAL ODMS of the engine control module, and the O/D is turned on by the engine control module. In this case, the engine control module controls the gear shift according to the vehicle’s driving condition, using the O/D range. At this time, the O/D off indicator light is off. ∗ Overdrive off When the O/D main SW is pushed while the O/D is on, a signal is input into TERMINAL ODMS of the engine control module, and the O/D is turned off. At this time, the current flows through the O/D off indicator light to TERMINAL ODLP of the engine control module. As a result, the O/D off indicator light turns on, and the engine control module controls the gear shift according to the vehicle’s driving condition, without using the O/D range. Service Hints E3 (A), E4 (B), E5 (C), E6 (D) Engine Control Module S1, S2–E1 : 9.0–14.0 volts with the ignition SW on and the solenoid on 0–1.5 volts with the ignition SW on and the solenoid off L–E1 : 7.5–14.0 volts with the ignition SW on and the shift lever at L position 2–E1 : 7.5–14.0 volts with the ignition SW on and the shift lever at 2 position R–E1 : 7.5–14.0 volts with the ignition SW on and the shift lever at R position STP–E1 : 9.0–14.0 volts with the brake pedal depressed THW–E2 : 0.2–1.0 volts with the engine coolant temp. 60°C (140°F) –120°C (248°F) and engine idling VTA–E2 : 0.3–0.8 volts with the ignition SW on and the throttle valve fully closed 3.2–4.9 volts with the ignition SW on and the throttle valve fully open VC–E2 : 4.5–5.5 volts with the ignition SW on ODMS–E1 : 9.0–14.0 volts with the ignition SW on 0–3.0 volts with the ignition SW on and press continuously the O/D main SW +B–E1 : 9.0–14.0 volts with the ignition SW on ODLP–E1 : Approx. 12 volts with the ignition SW on and the O/D main SW turned off A2 A/T Shift Lever Position SW 3–2 : Closed with the shift lever in R position 3–4 : Closed with the shift lever in 2 position 3–8 : Closed with the shift lever in L position

145
2004 COROLLA (EWD533U)

Electronically Controlled Transmission
: Parts Location
Code A2 A10 C9 C14 D1 E1 E2 32 34 34 34 34 32 32 J2 J3 See Page E3 E4 E5 E6 I10 A B Code A B C D 34 34 34 34 35 35 35 See Page J4 J5 J7 S1 S9 T1 V1 Code A B 35 35 35 33 35 33 33 See Page

: Relay Blocks
Code 1 22 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector
Code IC IG IK IL IM 1A 3A 3B 3C 4B 4C 30 Instrument Panel Wire and Center J/B (Behind the Combination Meter) 28 Instrument Panel Wire and RH J/B ( g Side of the Instrument Panel Reinforcement) (Right ) 22 Engine Wire and Engine Room J/B (Engine Compartment Left) 24 25 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness
Code EA1 IA2 IA4 IA6 II1 II2 42 Engine Wire and Instrument Panel Wire (Blower Unit RH) 40 Engine Room Main Wire and Instrument Panel Wire ( g (Left Side of the Instrument Panel Reinforcement) ) 38 See Page Joining Wire Harness and Wire Harness (Connector Location) Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B)

: Ground Points
Code EB EC ED IG 38 38 40 See Page Ground Points Location Left Side of the Cylinder Head Front Left Suspension Tower Right Kick Panel

: Splice Points
Code I2 42 See Page Wire Harness with Splice Points Instrument Panel Wire Code See Page Wire Harness with Splice Points

146
2004 COROLLA (EWD533U)

Memo

147
2004 COROLLA (EWD533U)

Cruise Control
From Power Source System (See Page 48) 1

15A DOME

10A GAUGE

2 1 5 AM2 IG2 6 ST2 B–W (M/T) R–W R–W (M/T) (M/T) (M/T) C13 Cruise Control Clutch SW L 19 3C 20 3C G–R V–W V–W R–W 1 7 IC R–W 6 1M 4 IL 16 3B 2 20 3B L 14 7 A2 A/T Shift Lever Position SW 17 3C (A/T) L II1 L 8 4C (A/T) L J4 Junction Connector 22 3B 19 3B L–W 2 IG 5 IA5

B

I10 Ignition SW

B–W

R–W

15A AM2

20 4C

(A/T)

L–W

5

IL

14

II2

IA5

R–W 19 4C 8 IK B R–W L–W B–O B 5 4 32 R–W Speedometer 3 D CRUISE 30A MAIN C9 Combination Meter 10 23 V–W FL MAIN 2. 0L 7 4C Battery

3 1M

2 IA4 (A/T) 4

B–R

B–R

1

2

1

1 1A B

148
2004 COROLLA (EWD533U)

G–R

(A/T)

From Power Source System (See Page 48)

E 4(B), E 5(C), E 6(D) Engine Control Module

From Power Source System (See Page 48)

D1 Data Link Connector 3 10A ECU–IG IDLO 16 D 9 IF B–W * 1 : A/T OD1 18 C S2 14 B (* 1) L TC 13 14 IC R–W STP– 3 G–W GND 16 W–B 12 3C 13 3C G–W 1 IL G–W L 5 IL W–B M CANCEL 14 4B ECC 3 C10 Combination SW C4 Cruise Control Actuator 4 GND 13 4B 12 4B W–B 21 4B W–B J6 Junction Connector A IE P–B 15A STOP

D A J 2(A), J 3(B) Junction Connector B B (* 1) L

L–W

R–Y

5 3B

(*1)

3 4C

3 6 3B B–W

II1 2 4C (*1) L P–B 10 TC L 8 G–O 13 IA5 G–O R–W 3 R–G 4 R–Y 1 3 MO 3 W–B IA5 W–B S9 Stop Light SW 2

2 +B

C14 Cruise Control ECU

13 IDL

14 OD

6 ECT

D 4 L

PI 5 G–R

SPD 12 V–W

CCS 11

MC 7 R–L

MO 15 R–G 4 IA5 1

G–Y

12

IA5

L

2 CCS CRUISE

RES/ACC

R–L 2 MC SET/COAST G–R W–B V–W

149
2004 COROLLA (EWD533U)

Cruise Control
System Outline The current is applied at all times through the STOP fuse to TERMINAL 2 of the stop light SW. With the ignition SW turned to on, the current flows through the MAIN fuse to AM2 fuse to ignition SW (IG2) to TERMINAL 32 of the combination meter and the current through the ECU–IG fuse flows to TERMINAL 2 of the cruise control ECU. When the ignition SW is on and the CRUISE SW is turned on, a signal is input from TERMINAL 2 of the cruise control SW to TERMINAL 1 of the cruise control ECU. As a result, the cruise control ECU functions and the current flows from the ECU–IG fuse to TERMINAL 2 of the cruise control ECU to TERMINAL 16 of the cruise control ECU to GROUND, and the cruise control system is in a condition ready for operation. At the same time, the current flows through the MAIN fuse to AM2 fuse to ignition SW (IG2) to TERMINAL 32 of the cruise indicator light to TERMINAL 23 to TERMINAL 5 of the cruise control ECU to TERMINAL 16 to GROUND, causing the cruise indicator light to light up, indicating that cruise control is ready for operation. 1. Set Operation When the CRUISE SW is turned on and the SET SW is pushed with the vehicle speed within the set limit (Approx. 40 km/h, 25 mph to 200 km/h, 124 mph), a signal is input to TERMINAL 11 of the cruise control ECU, and the vehicle speed at the time the SET SW is released is memorized in the ECU as the set speed. 2. Set Speed Control During cruise control driving, the ECU compares the set speed memorized in the ECU with the actual vehicle speed input into TERMINAL 12 of the cruise control ECU from the combination meter, and controls the cruise control actuator to maintain the set speed. When the actual speed is lower than the set speed, the ECU causes the current to the cruise control actuator to flow from TERMINAL 15 of the cruise control ECU to TERMINAL 1 of the cruise control actuator to TERMINAL 2 to TERMINAL 7 of the cruise control ECU. As a result, the motor in the cruise control actuator is rotated to open the throttle valve and the throttle cable is pulled to increase the vehicle speed. When the actual driving speed is higher than the set speed, the current to the cruise control actuator flows from TERMINAL 7 of the ECU to TERMINAL 2 of the cruise control actuator to TERMINAL 1 to TERMINAL 15 of the cruise control ECU. This causes the motor in the cruise control actuator to rotate to close the throttle valve and return the throttle cable to decrease the vehicle speed. 3. Coast Control During cruise control driving, while the COAST SW is on, the cruise control actuator returns the throttle cable to close the throttle valve and decrease the driving speed. The vehicle speed when the COAST SW is turned off is memorized, and the vehicle continues at the new set speed. 4. Accel Control During cruise control driving, while the ACC SW is turned on, the cruise control actuator pulls the throttle cable to open the throttle valve and increase the driving speed. The vehicle speed when the ACC SW is turned off is memorized and the vehicle continues at the new set speed. 5. Resume Control Unless the vehicle speed falls below the minimum speed limit (Approx. 40km/h, 25mph) after canceling the set speed by the CANCEL SW, pushing the RES SW will cause the vehicle to resume the speed set before cancellation. 6. Manual Cancel Mechanism If any of the following operations occurs during cruise control operation, the magnetic clutch of the actuator turns off and the motor rotates to close the throttle valve and the cruise control is released. ∗ Placing the shift lever to positions except ”D” position (Park/Neutral position SW except ”D” position)(A/T), depressing the clutch pedal (Cruise control clutch SW off)(M/T). ”Signal is not input to TERMINAL 4 of the ECU” ∗ Depressing the brake pedal (Stop light SW on). ”Signal input to TERMINAL 3 of the ECU” ∗ Pushing the CANCEL SW (CANCEL SW on). ”Signal input to TERMINAL 1 of the ECU” ∗ Pushing the CRUISE SW off ”signal input to TERMINAL 1 of the ECU”. 7. Tap–Up Control Function When the difference between the actual vehicle speed and the set speed is less than 5 km/h (3 mph), the set speed can be increased 1.6 km/h (1 mph) each time by operating the RES/ACC SW quickly within 0.6 seconds. 8. Tap–Down Control Function When the difference between the actual vehicle speed and the set speed is less than 5 km/h (3 mph), the set speed can be lowered 1.6 km/h (1 mph) each time by operating the SET COAST SW quickly within 0.6 seconds.

150
2004 COROLLA (EWD533U)

9. Auto Cancel Function A) If any of the following operating conditions occurs during cruise control operation, the set speed is erased, current flow to the magnetic clutch is stopped and the cruise control is released, (CRUISE SW turns off). When this occurs, the ignition SW must be turned off once before the CRUISE SW will turn on. ∗ When current continues to flow to the motor inside the actuator in the throttle valve ”OPEN” direction. ∗ The motor does not operate despite the motor drive signal being output. B) If any of the following operating conditions occurs during cruise control operation, the set speed is erased, current flow to the magnetic clutch is stopped and the cruise control is released. (CRUISE SW turn off). When this occurs, the cancel state is cleared as the CRUISE SW will turn on again. ∗ Over current to transistor driving the motor or the magnetic clutch. ∗ Open circuit in the magnetic clutch. ∗ Momentary interruption of vehicle speed signal. ∗ Short circuit in the cruise control SW. C) If any of the following conditions occurs during cruise control operation, the set speed is erased and the cruise control is released. (The power to the magnetic clutch is cut off until the SET SW is ”ON” again.) ∗ When the vehicle speed falls below the minimum speed limit, approx. 40 km/h (25 mph) ∗ When power to the cruise control system is momentarily cut off. 10. Automatic Transaxle Control Function (A/T) ∗ In overdrive. If the vehicle speed becomes lower than the overdrive cut speed (Set speed minus approx. 4 km/h, 2.5 mph) during cruise control operation, such as driving up a hill, the overdrive is released and the power is increased to prevent a reduction in vehicle speed. ∗ After releasing the overdrive, if the vehicle speed becomes higher than the overdrive return speed (Set speed minus approx. 2 km/h, 1.2 mph) and the ECU judges by the signals from the actuator’s potentiometer that the upward slope has finished, the overdrive is resumed after approximately 2 seconds. ∗ During cruise control driving, the cruise control operation signal is output from the cruise control ECU to the engine control module. Upon receiving this signal, the engine control module changes the shift pattern to normal. To maintain smooth cruise control operation (on a downward slope etc.), the lock–up release of the transaxle when the idling point of the throttle position is ”ON” is forbidden. Service Hints C10 Combination SW 2–3 : Continuity with the CRUISE SW on 2–3 : Approx. 1540 Ω with the CANCEL SW on Approx. 240 Ω with the RES/ACC SW on Approx. 630 Ω with the SET/COAST SW on C14 Cruise Control ECU 2–Ground : 12 volts with the ignition SW at ON position 1–Ground : Approx. 1540 Ω with the CANCEL SW on in the control SW Approx. 630 Ω with the SET/COAST SW on in the control SW Approx. 240 Ω with the RES/ACC SW on in the control SW 16–Ground : Always continuity : Parts Location
Code A2 C4 C9 C10 C13 C14 32 32 34 34 34 34 J2 E4 E5 E6 I10 A See Page Code D1 B C D 34 34 34 34 35 35 See Page J3 J4 J6 S9 Code B 35 35 35 35 See Page

: Relay Blocks
Code 1 22 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

151
2004 COROLLA (EWD533U)

Cruise Control
: Junction Block and Wire Harness Connector
Code IC IF IG IK IL IM 1A 3B 3C 4B 4C 22 28 30 Engine Wire and Engine Room J/B (Engine Compartment Left) Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement) Instrument Panel Wire and Center J/B (Behind the Combination Meter) 24 25 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) ( ) See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness
Code IA4 IA5 II1 II2 40 42 See Page Joining Wire Harness and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement) Engine Wire and Instrument Panel Wire (Blower Unit RH)

: Ground Points
Code IE 40 See Page Ground Points Location Behind the Combination Meter

152
2004 COROLLA (EWD533U)

Memo

153
2004 COROLLA (EWD533U)

ABS
From Power Source System (See Page 48) 1

ACC 5 AM2 IG2 6 ST2 B 2 IG I10 Ignition SW 6 IM 22 3B R–W B–W

10A GAUGE

15A DOME

2 1

7 IC

15A AM2

16 3B 4 IL L–W 20 4C 5 IL 19 4C 8 IK L–W 5 B–O 32 B–W

3 IM B–R

2 IA4

B–R

1

2

1 R–W 1 1A 35

17 IA5 B W–B 2

FL MAIN 2. 0L

R–W

37 18 4B

36

9

Speedometer

W–G

B2 Brake Fluid Level Warning SW

21 4B 1 R

W–R 2 W–B

Battery W–B A J6 Junction Connector IE

ED

154
2004 COROLLA (EWD533U)

C9 Combination Meter

30A MAIN Brake

ABS

R–W

4

L–W

From Power Source System (See Page 48) 1 30A ABS NO. 1 2 13 IC 14 IC 1 2 1 1 40A ABS NO. 2 D1 Data Link Connector 3 D2 Daytime Running Light Relay

10A ECU–IG

15A STOP

TS 12

TC 13 P–B

SIL 7 L–R

BRK 10

PKB 11 R–B

R–W

3 4C GR

2 3B R–W P3 Parking Brake SW RR– 4 W 4 IB1 A20 ABS Speed Sensor Rear RH 2 BD1 W W

1 2 B–W S9 Stop Light SW 1 4C P–B R L 1 3B L–R

1 11 IA6 G–W 12 IA6 4 IA6 15 IA5

R–W

P–B

L–R

GR

3 IG1

16 STP

2 +BS

24 +BM

10 TS

8 TC

11 D/G

12 PKB

S1 Skid Control ECU with Actuator

SP1 17

BRL 19

WA 30

GND2 23

GND1 1

FL+ 13

FL– 26

FR+ 27

FR– 28

RL+ 7 B

RL– 6 Y

RR+ 5 R 3 IB1 1 BD1 B 2 1 R

W–G

W–R

W–B

W–B

W

G

R

R

B

1

IB1

2 IB1

14 IA6

16 IA5

5

IA6 E1 1 BC1 B Y A19 ABS Speed Sensor Rear LH 2 BC1 W

W–G

A3 ABS Speed Sensor Front LH

W–B

2

2

A4 ABS Speed Sensor Front RH

1

1

R

W–R

EA

B 2 1

155
2004 COROLLA (EWD533U)

ABS
System Outline ABS is a brake system designed to improve the operating ability and securing the stability of the vehicle by preventing the lock–up of the vehicle by controlling the wheel cylinder pressure of all the four wheels at the time of sudden braking. 1. Input Signals (1) Speed sensor signal The speed of the wheels is detected and input to TERMINALS FL+, FR+, RL+, and RR+ of the skid control ECU and actuator. (2) Stop light SW signal A signal is input to TERMINAL STP of the skid control ECU with actuator when brake pedal is depressed. 2. System Operation When the wheels are locked–up, the solenoid inside the actuator is controlled by the signal from the skid control ECU with actuator, and the brake fluid in the wheel cylinder will flow through the reservoir and reduce the hydraulic pressure. While the ABS is in operation, as the skid control ECU with actuator always outputs the operation signal to the pump inside the actuator, and the brake fluid stored inside the reservoir will be sucked up by the pump inside the actuator and returned to the master cylinder. When the hydraulic pressure of the wheel cylinder is decompressed or increased until the necessary hydraulic pressure, the solenoid inside the actuator is controlled by the control signal from the skid control ECU with actuator and as a result, hydraulic pressure of the wheel cylinder will be closed at both the master cylinder and reservoir sides routes, and the hydraulic pressure of the wheel cylinder will be in the hold condition. If increase of the hydraulic pressure volume of the wheel cylinder becomes necessary, the control signals from the skid control ECU with actuator control the solenoid inside the actuator, to resume to the normal condition. Thus the brake fluid of the master cylinder will be sent to the wheel cylinder and will increase the hydraulic pressure of the wheel cylinder. At this time, in the case that the brake fluid is left in the reservoir, it will be sucked up by the pump inside the actuator and will be sent to the wheel cylinder. Service Hints A3, A4 ABS Speed Sensor Front LH, RH 2–1 : 0.92 –1.22 kΩ (25°C, 77°F) A19, A20 ABS Speed Sensor Rear LH, RH 1–2 : 1.0 –1.4 kΩ (25°C, 77°F) S1 Skid Control ECU with Actuator 23, 1–Ground : Always continuity 3–Ground : Approx. 12 volts with the ignition SW at ON position 16–Ground : Approx. 12 volts with the brake pedal depressed 2, 24–Ground : Always approx. 12 volts : Parts Location
Code A3 A4 A19 A20 B2 32 32 36 36 32 See Page Code C9 D1 D2 I10 J6 34 34 34 35 35 See Page Code P3 S1 S9 35 33 35 See Page

: Relay Blocks
Code 1 22 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

156
2004 COROLLA (EWD533U)

: Junction Block and Wire Harness Connector
Code IC IG IK IL IM 1A 3B 4B 4C 22 28 30 Engine Wire and Engine Room J/B (Engine Compartment Left) Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement) Instrument Panel Wire and Center J/B (Behind the Combination Meter) 24 25 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness
Code IA4 IA5 IA6 IB1 BC1 BD1 40 44 44 Engine Room Main Wire and Floor Wire (Cowl Side Panel LH) Skid Control Sensor Wire LH and Floor Wire (Quarter Wheel House LH) Skid Control Sensor Wire RH and Floor Wire (Quarter Wheel House RH) 40 Engine Room Main Wire and Instrument Panel Wire ( g (Left Side of the Instrument Panel Reinforcement) ) See Page Joining Wire Harness and Wire Harness (Connector Location)

: Ground Points
Code EA ED IE 38 38 40 See Page Ground Points Location Front Right Fender Front Left Suspension Tower Behind the Combination Meter

: Splice Points
Code E1 38 See Page Wire Harness with Splice Points Engine Room Main Wire Code See Page Wire Harness with Splice Points

157
2004 COROLLA (EWD533U)

Memo

158
2004 COROLLA (EWD533U)

SRS
NOTICE: When inspecting or repairing the SRS, perform the operation in accordance with the following precautionary instructions and the procedure and precautions in the Repair Manual for the applicable model year. D Malfunction symptoms of the SRS are difficult to confirm, so the DTCs become the most important source of information when troubleshooting. When troubleshooting the SRS, always inspect the DTCs before disconnecting the battery. D Work must be started after 90 seconds from when the ignition switch is turned to the ”LOCK” position and the negative (–) terminal cable is disconnected from the battery. (The SRS is equipped with a back–up power source so that if work is started within 90 seconds from disconnecting the negative (–) terminal cable of the battery, the SRS may be deployed.) D When the negative (–) terminal cable is disconnected from the battery, the memory of the clock and audio system will be canceled. So before starting work, make a record of the contents memorized in the audio memory system. When work is finished, reset the audio systems as they were before and adjust the clock. This vehicle has power tilt and power telescopic steering, power seat and power outside rear view mirror which are all equipped with memory function. However, it is not possible to make a record of the memory contents. So when the work is finished, it will be necessary to explain this fact tot the customer, and ask the customer to adjust the features and reset the memory. To avoid erasing the memory in each memory system, never use a back–up power supply from outside the vehicle. D Before repairs, remove the airbag sensor if shocks are likely to be applied to the sensor during repairs. D Do not expose the steering wheel pad, front passenger airbag assembly, side airbag assembly, seat belt pretensioner, airbag sensor assembly, front airbag sensor assembly or side airbag sensor assembly directly to hot air or flames. D Even in cases of a minor collision where the SRS does not deploy, the steering wheel pad, front passenger airbag assembly, side airbag assembly, seat belt pretensioner, airbag sensor assembly, front airbag sensor assembly and side airbag sensor assembly should be inspected. D Never use SRS parts from another vehicle. When replacing parts, replace them with new parts. D Never disassemble and repair the steering wheel pad, front passenger airbag assembly, side airbag assembly, seat belt pretensioner, airbag sensor assembly, front airbag sensor assembly or side airbag sensor assembly in order to reuse it. D If the steering wheel pad, front passenger airbag assembly, side airbag assembly, seat belt pretensioner, airbag sensor assembly, front airbag sensor assembly or side airbag sensor assembly has been dropped, or if there are cracks, dents or other defects in the case, bracket or connector, replace them with new ones. D Use a volt/ohmmeter with high impedance (10 kΩ/V minimum) for troubleshooting the system’s electrical circuits. D Information labels are attached to the periphery of the SRS components. Follow the instructions on the notices. D After work on the SRS is completed, perform the SRS warning light check. D If the vehicle is equipped with a mobile communication system, refer to the precaution in the IN section of the Repair Manual.

159
2004 COROLLA (EWD533U)

SRS

5 AM2

IG2 6 ST2

B–W

B–W L–W G–Y

I10 Ignition SW

6 IM

B

15A AM2

3 IM

B–R

L–W

G–Y

B

B

2

IA4

8 C RBE+

A12(A), A13(B), A14(C) Airbag Sensor Assembly

B–R

I6 LSP+ 3 IG1 1 G–W L–W G–Y R–B 1 IG1 3 A LSP– 4 A LBE+ 11 A

2

3 30A MAIN Occupant Detection Sensor

2

4 Buckle SW

3

4 VS

5 GND

1 1 1A

Seat Position Sensor Buckle SW 2 IG1 W–B 15 3A 11 3A W–B A J7 Junction Connector IG W–B B6 Buckle SW LH Seat Position Sensor 1

B7 Buckle SW RH Occupant Detection Sensor

1

B

FL MAIN 2. 0L

4 IG1 W–B

14 3A

Battery

160
2004 COROLLA (EWD533U)

W–B

G 2

B

B

* 1 : w/ Side Airbag

B–W L–W G–Y

B–W L–W G–Y

S6 Side Airbag Squib LH

S7 Side Airbag Squib RH

S10 Side Airbag Sensor LH

S11 Side Airbag Sensor RH

ESL 1 2 1 2 1

SSL– 2

FSL 3

VUPL 4

ESR 1

SSR– 2

FSR 3

VUPR 4

GR–L

LG–B

L–W

Y–G

Y–G

Y–R

Y–R

P–L

L–Y

(* 1)

(* 1)

(* 1)

(* 1)

(* 1)

(* 1)

(* 1)

(* 1)

(* 1)

(* 1)

(* 1)

6 A SFL+

5 A SFL–

1 C SFR+

2 C SFR–

12 A ESL

9 A SSL–

10 A FSL

7 A VUPL

7 C ESR

10 C SSR–

9 C FSR

12 C VUPR

A12(A), A13(B), A14(C) Airbag Sensor Assembly PL+ 2 A PL– 1 A PR+ 5 C PR– 6 C D+ 14 B D– 13 B D2+ 16 B D2– 17 B P+ 10 B P– 11 B P2+ 8 B P2– 7 B

Y–GR

Y–G

Y–G

Y–R

Y–B

Y–B

Y–B

Y–V

1

2

1

2

1 D+

2 D–

4 D2+

3 D2–

1 P+

2 P–

3 P2+

P12 Pretensioner LH

P13 Pretensioner RH

A16 Airbag Squib (Steering Wheel Pad)

A15 Airbag Squib (Front Passenger Airbag Assembly)

Y–P 4 P2–

Y

Y

Y

(* 1)

GR

LG

P

161
2004 COROLLA (EWD533U)

SRS
From Power Source System (See Page 48) 1 B–W L–W G–Y A5 Airbag Sensor Front LH A6 Airbag Sensor Front RH B–W 2 IG L–W 10A GAUGE 15A DOME

2 1

R–W

7 IC

+SL 2 1

–SL

+SR 2 1

–SR 5 IL BR–W 4 IL 22 3B L–W L–W 16 3B 20 4C B–O BR–W R–W 19 4C 4 C9 Combination Meter L–W 32 12 11 5 39 SRS 2 14 4C 18 4B 21 4B W–B W–B B–Y A W–B A J6 Junction Connector IE G–Y

W–R

B–W

BR

8 3 IA1 4 IA1 1 IA1 2 IA1

II

8 IK

W–R

15 B +SL

26 B –SL A12(A), A13(B), A14(C) Airbag Sensor Assembly

9 B +SR

B–W

BR

20 B –SR

5 B IG2

E2 28 B

E1 27 B

GSW2 23 B

TC 19 B

SIL 12 B

LA 3 B

W–B

W–B

P–B

10

II

3

II

7

II

1

II

2

II

5

B–Y

L–R

Y

II

10 IH

4 IF

6

IJ

4

IJ

5

IJ

1

IJ

P–B

5 4C W–B W–B Y

4 3B

15 4C

3 4C P–B

2 3B L–R

13 4C B–Y

E6 Engine Control Module

14 F/PS

13 TC

7 SIL

11 A/B

D1 Data Link Connector 3

A J7 Junction Connector IG

162
2004 COROLLA (EWD533U)

B–Y

L–R

B–O

System Outline The SRS is a driver and front passenger protection device which has a supplemental role to the seat belts. When the ignition SW is turned to ON, current from the MAIN fuse flows to AM2 fuse to ignition SW (IG2) to TERMINAL (B) 5 of the airbag sensor assembly. If an accident occurs while driving, when the frontal impact exceeds a set level, the current from the TERMINAL (B) 5 of the airbag sensor assembly flows to TERMINALS (B) 14, (B) 16, (B) 10, (B) 8, (A) 2 and (C) 5 of the airbag sensor assembly to the airbag squibs and the pretensioners to TERMINALS (B) 13, (B) 17, (B) 11, (B) 7, (A) 1 and (C) 6 of the airbag sensor assembly to TERMINAL (B) 20, (B) 27 or BODY GROUND to GROUND, so that the current flows to the front airbag squibs and the pretensioners, and causes them to operate. When the side impact also exceeds a set level, the current from the TERMINAL (B) 5 of the airbag sensor assembly flows to TERMINALS (A) 6 and (C) 1 of the airbag sensor assembly to the side airbag squibs to TERMINALS (A) 5 and (C) 2 of the airbag sensor assembly to TERMINAL (B) 20, (B) 27 or BODY GROUND to GROUND, causing side airbag squibs to operate. The airbag stored inside the steering wheel pad is instantaneously expanded to soften the shock to the driver. The airbag stored inside the passenger’s instrument panel is instantaneously expanded to soften the shock to the front passenger. Side airbags are instantaneously expanded to soften the shock of side to the driver and front passenger. The pretensioners make sure of the seat belt restrainability. : Parts Location
Code A5 A6 A12 A13 A14 A15 A16 A B C 32 32 34 34 34 34 34 See Page Code B6 B7 C9 D1 E6 I10 J6 34 34 34 34 34 35 35 See Page Code J7 P12 P13 S6 S7 S10 S11 35 37 37 35 35 37 37 See Page

: Relay Blocks
Code 1 22 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector
Code IC IF IG IH II IJ IK IL IM 1A 3A 3B 4B 4C 22 28 30 Engine Wire and Engine Room J/B (Engine Compartment Left) Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement) Instrument Panel Wire and Center J/B (Behind the Combination Meter) 24 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) 25 See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness
Code IA1 IA4 IG1 40 42 See Page Joining Wire Harness and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement) Instrument Panel Wire and Instrument Panel No.3 Wire (Front Side of the Parking Brake Lever)

163
2004 COROLLA (EWD533U)

SRS
: Ground Points
Code IE IG 40 40 See Page Ground Points Location Behind the Combination Meter Right Kick Panel

: Splice Points
Code I6 42 See Page Wire Harness with Splice Points Instrument Panel No.3 Wire Code See Page Wire Harness with Splice Points

164
2004 COROLLA (EWD533U)

Memo

165
2004 COROLLA (EWD533U)

Shift Lock
From Power Source System (See Page 48)

10A ECU–IG

15A STOP

9 IF

14 IC

R–W 2 S9 Stop Light SW 1 B–W 5 3B 5 IC 7 3B 1 IL 13 3C B–W 10 3C W–B G–W 1 E 16 3A 5 IG 3 STP 11 3A W–B SLS+ SLS– A Shift Lock Solenoid J7 Junction Connector S5 Shift Lock Control ECU IG

166
2004 COROLLA (EWD533U)

G–W

G–W

System Outline When the ignition SW is turned to ON position, the current from the ECU–IG fuse flows to TERMINAL 5 of the shift lock control ECU. Shift Lock Mechanism With the ignition SW at ON position, when a signal that the brake pedal is depressed (Stop light SW on) and a signal that the shift lever is put in P position is input to the ECU, the ECU operates and the current flows from TERMINAL 5 of the ECU to TERMINAL SLS+ of the shift lock solenoid to TERMINAL SLS– to TERMINAL 1 of the ECU to GROUND. This causes the shift lock solenoid to turn on (Plate stopper disengages) and the shift lever can shift into position other than P. Service Hints S5 Shift Lock Control ECU 5–Ground : Approx. 12 volts with the ignition SW at ON position 1–Ground : Always continuity 3–Ground : Approx. 12 volts with the brake pedal depressed S9 Stop Light SW 2–1 : Closed with the brake pedal depressed : Parts Location
Code J7 35 See Page Code S5 35 See Page Code S9 35 See Page

: Junction Block and Wire Harness Connector
Code IC IF IL 3A 3B 3C 28 Instrument Panel Wire and RH J/B ( g Side of the Instrument Panel Reinforcement) (Right ) 25 25 24 See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)

: Ground Points
Code IG 40 See Page Ground Points Location Right Kick Panel

167
2004 COROLLA (EWD533U)

Light Reminder Buzzer and Key Reminder Buzzer
From Power Source System (See Page 48) 1 * * * * 1 : w/ Door Lock Control 2 : w/o Door Lock Control 3 : USA 4 : Canada G–W 10A GAUGE 15A DOME 15A TAIL (*3) G–W (*3) 2 2 IG R–W L–W 1 7 IH G–W (* 3) G–W 13 Light Control SW OFF Tail Head 16 3B 4 IL L–W C12 Combination SW 10 G–B (*4) G (*3) TAIL 14 3 3 G–W D2 Daytime Running Light Relay (*3) 15 T 1 3 3 TAIL Relay 2 5 3

22 3B

7 IC

20 4C R–W

(* 4)

I4 19 4C L–W G

G (*3)

4

5

18

C9 Combination Meter

Buzzer

17

2

16

L–B (*1)

R–W

W–B

14 4A L–B (* 2)

3

IL 15 4A L–B 18 4B (*1) 2 U1 Unlock Warning SW 21 4B 1 D4 Door Courtesy SW Front LH W–B 1 W–B A J6 Junction Connector IE

1 ID R–W

A

168
2004 COROLLA (EWD533U)

System Outline The current is applied at all times to TERMINAL 5 of the combination meter through the DOME fuse. When the ignition SW is turned to ON position, the current flows to TERMINAL 4 of the combination meter through the GAUGE fuse. When the light control SW is turned to Tail or Head position, current is applied to TERMINAL 18 of the combination meter through the TAIL fuse via the TAIL relay (USA) or the light control SW (Canada). 1. Light Reminder System When the light control SW is in Tail or Head position, the ignition SW turned to OFF from ON position, and the driver’s door opened (Door courtesy SW on), the current flows to TERMINAL 4 of the combination meter stops. As a result, the combination meter is activated and current flows from TERMINAL 5 of the combination meter to TERMINAL 2 to GROUND, the buzzer in the combination meter goes on to remind the light is lighting up. 2. Key Reminder System When the driver door is opened with the ignition SW off and ignition key remaining in the key cylinder (Unlock warning SW on), a signal is input from the unlock warning SW to TERMINAL 16 of the combination meter, and from the door courtesy SW front LH to TERMINAL 17 of the combination meter. As a result, the buzzer in the combination meter goes on and warns the driver that the key is remaining in the key cylinder. Service Hints C9 Combination Meter 4–Ground : Approx. 12 volts with the ignition SW at ON position 18–Ground : Approx. 12 volts with the light control SW at Tail or Head position 17–Ground : Continuity with the driver’s door open 2–Ground : Always continuity D4 Door Courtesy SW Front LH 1–Ground : Closed with the driver’s door open U1 Unlock Warning SW 2–1 : Closed with the ignition key in cylinder : Parts Location
Code C9 C12 34 34 See Page Code D2 D4 34 36 See Page Code J6 U1 35 35 See Page

: Relay Blocks
Code 1 3 22 28 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left) RH R/B (Right Side of the Instrument Panel Reinforcement)

: Junction Block and Wire Harness Connector
Code IC ID IG IH IL 3B 4A 4B 4C 30 Instrument Panel Wire and Center J/B (Behind the Combination Meter) ( ) 25 25 25 24 28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement) See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel) Floor Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) ( )

: Ground Points
Code IE 40 See Page Ground Points Location Behind the Combination Meter

169
2004 COROLLA (EWD533U)

Light Reminder Buzzer and Key Reminder Buzzer
: Splice Points
Code I4 42 See Page Wire Harness with Splice Points Instrument Panel Wire Code See Page Wire Harness with Splice Points

170
2004 COROLLA (EWD533U)

Memo

171
2004 COROLLA (EWD533U)

Seat Belt Warning
From Power Source System (See Page 48) 1

10A GAUGE

15A DOME

2 2 IG R–W L–W 7 IC 4 IL L–W 20 4C PASSENGER F7 Front Passenger Seat Belt Warning Light 19 4C R–W L–W 1

22 3B

11 3B R–W

16 3B R–W

1

3

L

4

5

C9 Combination Meter

Seat Belt

6

2 BR

11 L–W

12 G–Y

1 BR 5 II2 B6 Buckle SW LH BR C J3 Junction Connector 15 3A 14 3A 11 3A C W–B W–B W–B A W–B J7 Junction Connector EB IG BR

18 4B

3 IG1

1 IG1

L–W

3

2 Occupant Detection Sensor

4 Buckle SW

B7 Buckle SW RH Occupant Detection Sensor

21 4B

1 W–B

2 IG1

A J6 Junction Connector IE 4 IG1 W–B

172
2004 COROLLA (EWD533U)

W–B

BR

G–Y 3 1

B

System Outline Current is always applied from the DOME fuse to TERMINAL 5 of the combination meter. When the ignition SW is turned to ON position, the current from the GAUGE fuse flows to TERMINAL 4 of the combination meter and flows TERMINAL 1 of the front passenger seat belt warning light. Seat Belt Warning System When the ignition SW turned on, a signal is input to the combination meter. To determine whether the driver has fastened the seat belt, a signal is input from the buckle SW LH to TERMINAL 12 of the combination meter. When the seat belt is not fastened, the seat belt warning light in the combination meter blinks, and emits a warning sound. In addition, the front passenger is recognized by a sensor (Occupant detection sensor) is installed in the front passenger seat, and determines whether the seat belt is fastened. When not fastened, the signals from the occupant detection sensor is input to TERMINAL 11 of the combination meter, and the front passenger seat belt warning light blinks. Service Hints B6 Buckle SW LH 3–1 : Open with the driver’s seat belt in use C9 Combination Meter 5–Ground : Always approx. 12 volts 4–Ground : Approx. 12 volts with the ignition SW at ON position 1–Ground : Always continuity : Parts Location
Code B6 B7 C9 34 34 34 See Page Code F7 J3 J6 35 35 35 See Page Code J7 35 See Page

: Relay Blocks
Code 1 22 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector
Code IC IG IL 3A 3B 4B 4C 25 25 24 28 30 See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement) Instrument Panel Wire and Center J/B (Behind the Combination Meter)

: Connector Joining Wire Harness and Wire Harness
Code IG1 II2 42 42 See Page Joining Wire Harness and Wire Harness (Connector Location) Instrument Panel Wire and Instrument Panel No.3 Wire (Front Side of the Parking Brake Lever) Engine Wire and Instrument Panel Wire (Blower Unit RH)

: Ground Points
Code EB IE IG 38 40 40 See Page Ground Points Location Left Side of the Cylinder Head Behind the Combination Meter Right Kick Panel

173
2004 COROLLA (EWD533U)

Rear Window Defogger
From Power Source System (See Page 48) 1

10A GAUGE

40A DEFOG

2

2 IG

R–W

2

5 DEF Relay

22 3B 1 3

10 IL 14 3B

4 IM

B R–W B

8 ID1

5 IG

4 D B B5 B

E R5 Rear Window Defogger SW 2

W–B

1 A R15(A), R16(B) Rear Window Defogger 1 B

B 1 N2 Noise Filter (Rear Window Defogger)

IE

174
2004 COROLLA (EWD533U)

B BJ

Service Hints DEF Relay 5–3 : Closed with the ignition SW at ON position and the rear window defogger SW on : Parts Location
Code N2 R5 37 35 See Page Code R15 R16 A B 37 37 See Page Code See Page

: Junction Block and Wire Harness Connector
Code IG IL IM 3B 25 24 28 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) ( ) Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement) See Page Junction Block and Wire Harness (Connector Location)

: Connector Joining Wire Harness and Wire Harness
Code ID1 42 See Page Joining Wire Harness and Wire Harness (Connector Location) Instrument Panel Wire and Floor Wire (Left Kick Panel)

: Ground Points
Code IE BJ 40 44 See Page Ground Points Location Behind the Combination Meter Under the Right Quarter Pillar

: Splice Points
Code B5 44 See Page Wire Harness with Splice Points Floor Wire Code See Page Wire Harness with Splice Points

175
2004 COROLLA (EWD533U)

Radio and Player
From Power Source System (See Page 48) 1 * 1 : w/ Tweeter * 2 : w/o Tweeter

15A DOME

2 1

7 IC

L–W

20 4C

A17 Antenna Amplifier

4 IL

L–W

17 4C 1

L–W

B

4 A +B

8 A ANT+

R 3(A), R 4(B) Radio and Player

GND 7 A

FL+ 2 A

FL– 6 A

FR+ 1 A

FR– 5 A

LG

P

V

4 IC2

3 IC2

4

IJ1

3

(* 1)

(* 1)

P

V

(* 1)

L IJ1 2 BF1 L(* 1) (* 1) L

BR

1 BE1

2 BE1

1 BF1

LG(*1)

LG(*2)

LG(*1)

LG(*1)

P(*2)

P(*1)

V(*1)

V(*2)

L(* 1)

LG

1

2

1

2

T4 Tweeter LH 1 2 1

T5 Tweeter RH 2

F8 Front Door Speaker LH

F9 Front Door Speaker RH

IF

176
2004 COROLLA (EWD533U)

L(* 1)

L(* 2)

From Power Source System (See Page 48)

15A CIG

8 IF

10 3A

7 3A

GR

GR

3 A ACC

R 3(A), R 4(B) Radio and Player

RL+ 2 B

RL– 6 B

RR+ 1 B

RR– 3 B

2 ID1

6 ID1

1 ID1

5 ID1

1

2

1

2

R13 Rear Speaker LH

R14 Rear Speaker RH

W

R

B

Y

W

R

B

Y

177
2004 COROLLA (EWD533U)

Radio and Player
Service Hints R3 (A) Radio and Player (A) 4–Ground : Always approx. 12 volts (A) 3–Ground : Approx. 12 volts with the ignition SW at ACC or ON position (A) 7–Ground : Always continuity : Parts Location
Code A17 F8 F9 34 36 36 See Page Code R3 R4 R13 A B 35 35 37 See Page Code R14 T4 T5 37 37 37 See Page

: Relay Blocks
Code 1 22 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector
Code IC IF IL 3A 4C 25 25 24 28 30 See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement) Instrument Panel Wire and Center J/B (Behind the Combination Meter)

: Connector Joining Wire Harness and Wire Harness
Code IC2 ID1 IJ1 BE1 BF1 40 42 42 44 44 See Page Joining Wire Harness and Wire Harness (Connector Location) Front Door LH Wire and Instrument Panel Wire (Left Kick Panel) Instrument Panel Wire and Floor Wire (Left Kick Panel) Front Door RH Wire and Instrument Panel Wire (Right Kick Panel) Speaker Tweeter LH Wire and Front Door LH Wire (Inside of the Front Door LH) Speaker Tweeter RH Wire and Front Door RH Wire (Inside of the Front Door RH)

: Ground Points
Code IF 40 See Page Ground Points Location Behind the Combination Meter

178
2004 COROLLA (EWD533U)

Memo

179
2004 COROLLA (EWD533U)

Combination Meter

B–W B–W

From Power Source System (See Page 48) 1

5 AM2

IG2 6 ST2

L–W

10A GAUGE I10 Ignition SW

10A HEAD RH UPR 2

4 IL

6 IM 2 IG R–W R–W

B

1 R

L–W

R–W 20 4C

15A AM2 22 3B 16 3B 6 IA6

19 4C R 7 IC 3 IM 20 3B B–R 14 (w/o ABS) R–W L–W

5

C9 Combination Meter

2 IA4 L–W B–R

1

1

14

II2

(w/o ABS)

2

2 R–W

1

1

B A

J 4(A), J 5(B) Junction Connector

C B 1 1A 13 20 17 8

B

Door

15A DOME

30A MAIN

High Beam

R–W

W–B

Speedometer Integration Relay Door Courtesy SW Front LH Door Courtesy SW Front RH, Rear LH, RH V1 Vehicle Speed Sensor (Combination Meter) 2 3 Engine Control Module W–G BR (w/o ABS) (w/o ABS) Y–R R

FL MAIN 2. 0L

1

Battery J6 Junction Connector A A W–B

W–B

(w/o ABS)

R–W

IE

W–B

180
2004 COROLLA (EWD533U)

10

9 4C V–W B–W R–W

8 4C

W–G

(w/o ABS)

W–B Tachometer 7 4C C9 Combination Meter 4 Fuel II2 W–G (w/o ABS) W–G 9 I2 (w/ ABS) W–G Temp. 19 B 16 L–B 4 R–W 12 Out Side Temp. ODO/TRIP G–Y 11 L–W

Engine Control Module

V–W

(w/o ABS)

Cruise Control ECU

V–W

BR

14 IA6

W–G

Skid Control ECU with Actuator

(w/ ABS)

Engine Control Module

Unlock Warning SW

Buckle SW LH

2004 COROLLA (EWD533U)
5 1 BR II2 BR ODO/TRIP BR Buzzer 13 ID2 BR Fuel 22 5 7 Y ID2

Buckle SW RH

C A

C B

BR

(w/o ABS)

J 2(A), J 3(B) Junction Connector

C B

BR

EB

BR

3

2

Y

B–W

W–B

F10 Fuel Sender

181

182
3 B–W 26 B IA6 30 10 IA6 B–L Seat Belt 6 2 W–B L Front Passenger Seat Belt Warning Light Turn LH 24 G–B Turn Signal Flasher Relay Turn RH 25 G–Y 5 IL 8 IK Y Charge 31 32 B–O 13 Washer Level 34 L–W (Canada) Malfunction Indicator Lamp IA6 C9 Combination Meter 33 R–Y O/D OFF 3 LG G–R CRUISE 23

Combination Meter

W–B

2

A7 Ambient Temp. Sensor

1

B

B–L

21 4B

2004 COROLLA (EWD533U)

Generator

18 4B

2

1

W–B

L–W

EA

(Canada)

(Canada) W1 Washer Level Sensor

Engine Control Module

Cruise Control ECU

W–R

Skid Control ECU with Actuator

(w/ ABS)

5 37

W–B W–R ABS IA6

W–B

E1

C9 Combination Meter

EA 16 36 R IA5 Brake 35 17 IA5 R–W SRS 39 R–W B–Y Airbag Sensor Assembly B Illumination 18 G

(w/o ABS)

(w/o ABS)

W–B

(w/o ABS)

R

Skid Control ECU with Actuator

(w/ ABS)

2

1

W–B

R–W

ED

(w/ ABS)

R–W

(w/o ABS)

(w/o ABS)

B2 Brake Fluid Level Warning SW

B

15

B

R–W

IA5

2004 COROLLA (EWD533U)
28 W–R 3 Oil Pressure 21 W II2

J1 Junction Connector

(w/o ABS)

Combination SW (Canada) TAIL Relay (USA)

R–W

(w/o ABS)

Rheostat

Daytime Running Light Relay

O1 Oil Pressure SW

1

W

183

Combination Meter
Service Hints B2 Brake Fluid Level Warning SW 1–2 : Closed with the float down C9 Combination Meter 4, 32–Ground : Approx. 12 volts with the ignition SW at ON position 1, 13, 36, 37–Ground : Always continuity 5–Ground : Always approx. 12 volts F10 Fuel Sender 2–3 : Approx. 4 Ω at fuel full Approx. 107 Ω at fuel empty O1 Oil Pressure SW 1–Ground : Opened with the oil pressure above approx. 19.61 kpa (2.84 psi, 0.2 kgf/cm2) : Parts Location
Code A7 B2 C9 F10 I10 32 32 34 36 35 J2 J3 J4 J5 See Page Code J1 A B A B 33 35 35 35 35 See Page Code J6 O1 V1 W1 35 33 33 33 See Page

: Relay Blocks
Code 1 22 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector
Code IC IG IK IL IM 1A 3B 4B 4C 22 28 30 Engine Wire and Engine Room J/B (Engine Compartment Left) Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement) Instrument Panel Wire and Center J/B (Behind the Combination Meter) 24 25 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness
Code IA4 IA5 IA6 ID2 II2 42 42 Instrument Panel Wire and Floor Wire (Left Kick Panel) Engine Wire and Instrument Panel Wire (Blower Unit RH) 40 Engine Room Main Wire and Instrument Panel Wire ( g (Left Side of the Instrument Panel Reinforcement) ) See Page Joining Wire Harness and Wire Harness (Connector Location)

: Ground Points
Code EA EB ED IE 38 38 38 40 See Page Ground Points Location Front Right Fender Left Side of the Cylinder Head Front Left Suspension Tower Behind the Combination Meter

184
2004 COROLLA (EWD533U)

: Splice Points
Code E1 38 See Page Wire Harness with Splice Points Engine Room Main Wire Code I2 42 See Page Wire Harness with Splice Points Instrument Panel Wire

185
2004 COROLLA (EWD533U)

Radiator Fan
From Power Source System (See Page 48) 1 30A RDI FAN 2 1 13 IC

10A ECU–IG

B–W

B–W

B–W

W–R

1

1

1

1

5

1 FAN NO. 1 Relay FAN NO. 2 Relay

1

3 4

3

2

2 1

5 1 1

1

1

B–R

LG

LG–B

LG–B

W–B

7

IA5

2 M 1 Single R1 Radiator Fan Motor LG

3 P2 Pressure SW 2

L–W 2 R2 Radiator Fan Resistor 1 W–B ED W–B E4

7 W–R FAN

6 CF

LG–B

6 IA5

E6 Engine Control Module

LG–B

186
2004 COROLLA (EWD533U)

W–B EA

W–B

System Outline The current is applied at all times through the RDI FAN fuse to TERMINAL 5 of the FAN NO.1 relay. When the ignition SW is turned on, the current flows through the ECU–IG fuse to FAN NO.1 relay (Coil side) to TERMINAL 6 of the engine control module. At the same time as this current flow, the current from ECU–IG fuse flows to the FAN NO.2 relay (Coil side) to TERMINAL 3 of the pressure SW. 1. Low Speed Operation When the A/C system is operating, the FAN NO.1 Relay is turned on. As a result, the current flows from the RDI FAN fuse to FAN NO.1 relay (Point side) to TERMINAL 2 of the radiator fan motor to TERMINAL 1 to TERMINAL 3 of the FAN NO.2 relay to TERMINAL 4 to TERMINAL 2 of the radiator fan resistor to TERMINAL 1 to GROUND, and the radiator fan motor rotates at low speed. 2. High Speed Operation When the pressure SW is on or engine control module operated, the FAN NO.1 and NO.2 relay is turned on. As a result, the current flows from the RDI FAN fuse to FAN NO.1 relay (Point side) to radiator fan motor to TERMINAL 3 of the FAN NO.2 Relay to TERMINAL 5 to GROUND, and the radiator fan motor rotates at high speed. Service Hints P2 Pressure SW 3–2 : Open below approx. 12.5 kgf/cm2 (178 psi, 1225 kpa) Close above approx. 15.5 kgf/cm2 (220 psi, 1520 kpa) : Parts Location
Code E6 P2 34 33 See Page Code R1 R2 33 33 See Page Code See Page

: Relay Blocks
Code 1 22 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector
Code IC 25 See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness
Code IA5 40 See Page Joining Wire Harness and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement)

: Ground Points
Code EA ED 38 38 See Page Ground Points Location Front Right Fender Front Left Suspension Tower

: Splice Points
Code E4 38 See Page Wire Harness with Splice Points Engine Room Main Wire Code See Page Wire Harness with Splice Points

187
2004 COROLLA (EWD533U)

Air Conditioning
From Power Source System (See Page 48) 1

L–W B

10A GAUGE

40A HEATER

2 L–W 2 IG 2 IM B–W B 7 IF 10A A/C

3 IC

R–W

5 IM

R–W

B

22 3B

18 3B

R–W

12 3B

13 3B

R–W R–W B4 Blower Resistor B R–W 1 3 2 HTR Relay 5 2 B–W 4 1 IH1 2 IH1 6 IH1 5 IH1 3 M B3 Blower Motor

B–W

B–W

1 3

3 3 3 B B

I7 B–W

B–W L–W R

4 W–B HI

1 M2

2 M1 LO OFF

L–W

6 5 W–B W–B A A J7 Junction Connector W–B

B5 Blower SW

A W–B A

IG

188
2004 COROLLA (EWD533U)

W–B

1

3 L–B

2 R

4

L–W L–W B

L–W

FACE Defroster Mode Detection SW A8 A/C SW Air Inlet Control SW Defroster Mode Detection SW Air Inlet Control SW FRS REC A/C SW Off On B/L FOOT F/D DEF 2 B 1 1 5 1 1 M/G CLT Relay 3 2 B–W 4 EA1 B–W Y–B A1 A/C Magnetic Clutch 7 IA6 2 C ACMG Y–B 31 C A/CS PRS 13 A W–B Y THR 32 C B–L E 3(A), E 5(B) Engine Control Module E2 28 A BR J3 Junction Connector A/C Thermistor 1 W–B BR EA F F 11 3A Dual BR II2 8 EA1 20 3A Y B 4 IH1 1 P2 Pressure SW 4 B 3 IH1 1 REC R–W 1

IG 9 6 G–W

FRS 7 L–W

REC 8 W–B

GND

AIND 4

A/C 3

2

1

G–W

A11 Air Inlet Control Servo Motor

M

5 33 C R–W ACLD

W–B

FRS

Y

189
2004 COROLLA (EWD533U)

Air Conditioning
System Outline Current is applied at all times through the HEATER fuse to TERMINAL 5 of the HTR relay. When the ignition SW is turned on, the current flows through the GAUGE fuse to TERMINAL 2 of the HTR relay to TERMINAL 1 to TERMINAL 6 of the blower SW. 1. Heater Blower Motor Operation ∗ Low speed operation When the blower SW is moved to LO position, the current flows to TERMINAL 6 of the blower SW to TERMINAL 5 to GROUND, causing the HTR relay to turn on. This causes the current flows from the HEATER fuse to TERMINAL 5 of the HTR relay to TERMINAL 3 to the blower motor to the blower resistor to GROUND, rotating the blower motor at low speed. ∗ Medium speed operation (Operation at M1, M2) When the blower SW is moved to M1 position, the current flows to TERMINAL 6 of the blower SW to TERMINAL 5 to GROUND, causing the HTR relay to turn on. This causes the current flows from the HEATER fuse to TERMINAL 5 of the HTR relay to TERMINAL 3 to the blower motor to the blower resistor to TERMINAL 2 of the blower SW to TERMINAL 5 to GROUND. At this time, the blower resistance of the blower resistor is smaller than at low speed, so the blower motor rotates at medium low speed. When the blower SW is moved to M2 position, the current flows through the HTR relay to the blower motor to the blower resistor to TERMINAL 1 of the blower SW to TERMINAL 5 to GROUND. At this time, resistance of the blower resistor is smaller than at M1 position, so the blower motor rotates at medium high speed. ∗ High speed operation When the blower SW is moved to HI position, the current flows to TERMINAL 6 of the blower SW to TERMINAL 5 to GROUND, causing the HTR relay to turn on. This causes the current flows from the HEATER fuse to TERMINAL 5 of the HTR relay to TERMINAL 3 to the blower motor to TERMINAL 4 of the blower SW to TERMINAL 5 to GROUND, rotating the blower motor at high speed. 2. Air Conditioning Operation When the blower SW is set on, the current flows from the HTR fuse to the HTR relay (Point side) to the A/C fuse to the TERMINAL 2 of the A/C SW. If the A/C SW is turned on, at this time a signal is input into the engine control module. This activates the engine control module and M/G CLT relay. So that current flows from the A/C fuse to M/G CLT relay (Point side) to A/C magnetic clutch. Causing the compressor to operate. Service Hints HTR Relay 5–3 : Closed with the ignition SW at ON position and the blower SW on P2 Pressure SW 1–4 : Open with the refrigerant pressure at less than approx. 2.0 kgf/cm2 (28.4 psi, 196.1 kpa) or more than approx. 32.0 kgf/cm2 (455 psi, 3138.1 kpa) : Parts Location
Code A1 A8 A9 A11 32 34 34 34 E3 See Page Code B3 B4 B5 A 34 34 34 34 See Page E5 J3 J7 P2 Code B 34 35 35 33 See Page

: Relay Blocks
Code 1 3 22 28 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left) RH R/B (Right Side of the Instrument Panel Reinforcement)

190
2004 COROLLA (EWD533U)

: Junction Block and Wire Harness Connector
Code IC IF IG IM 3A 3B 25 25 24 28 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement) See Page Junction Block and Wire Harness (Connector Location) Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) ( )

: Connector Joining Wire Harness and Wire Harness
Code EA1 IA6 IH1 II2 38 40 42 42 See Page Joining Wire Harness and Wire Harness (Connector Location) Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B) Engine Room Main Wire and Instrument Panel Wire (Left Side of the Instrument Panel Reinforcement) Instrument Panel Wire and A/C Sub Wire (Left Upper Side of the Blower Unit) Engine Wire and Instrument Panel Wire (Blower Unit RH)

: Ground Points
Code EA IG 38 40 See Page Ground Points Location Front Right Fender Right Kick Panel

: Splice Points
Code I7 42 See Page Wire Harness with Splice Points Instrument Panel Wire Code See Page Wire Harness with Splice Points

191
2004 COROLLA (EWD533U)

Heater
From Power Source System (See Page 48) 1 A8 Air Inlet Control SW 10A GAUGE 40A HEATER Air Inlet Control SW 2 2 IG 2 IM FRS REC

R–W

B–W

IG 9 R–W R–W 6 G–W

FRS 7 L–W

RSC

GND 8 W–B

2

1

FRS M R–W R–W B4 Blower Resistor 5 B–W B B3 Blower Motor 1 1 B–W 3 L–B 2 R 4 W–B 5 IH1 W–B L–W B–W M 2 B–W 1 IH1 2 IH1 6 IH1 3 I7 B–W

22 3B

18 3B

REC 12 3B 13 3B R–W 3 3 2 HTR Relay 1 3 5 4 3 3 W–B L–W B A11 Air Inlet Control Servo Motor 20 3A 4 HI 1 M2 2 M1 LO OFF 11 3A L–W 6 5 A J7 Junction Connector W–B W–B R W–B A W–B A IG W–B A B5 Blower SW

192
2004 COROLLA (EWD533U)

Service Hints HTR Relay 5–3 : Closed with the ignition SW at ON position and the blower SW on : Parts Location
Code A8 A11 34 34 See Page Code B3 B4 34 34 See Page Code B5 J7 34 35 See Page

: Relay Blocks
Code 3 28 See Page Relay Blocks (Relay Block Location) RH R/B (Right Side of the Instrument Panel Reinforcement)

: Junction Block and Wire Harness Connector
Code IG IM 3A 3B 25 24 28 See Page Junction Block and Wire Harness (Connector Location) Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement)

: Connector Joining Wire Harness and Wire Harness
Code IH1 42 See Page Joining Wire Harness and Wire Harness (Connector Location) Instrument Panel Wire and A/C Sub Wire (Left Upper Side of the Blower Unit)

: Ground Points
Code IG 40 See Page Ground Points Location Right Kick Panel

: Splice Points
Code I7 42 See Page Wire Harness with Splice Points Instrument Panel Wire Code See Page Wire Harness with Splice Points

193
2004 COROLLA (EWD533U)

I GROUND POINT

(–S) Pressure SW (CUT–) W–R

W–B

W–B

1

FAN NO. 2 Relay

W–B

E1 W–B W–B

E4 W–B

W–B

1

EFI Relay

(LP) Combination Meter (EBD)

5 IA6 16 IA5

E1 W–B E4 W–B

W–B

R

W–B

Front Parking Light LH Front Turn Signal Light LH Front Fog Light LH

E1 W–B

E4 W–B

W–B

W–B

Front Fog Light RH

W–B

W–B

Front Parking Light RH Front Turn Signal Light RH

W–B

E1

E4

W–B

Headlight LH (High)

E1 W–B

E4 W–B

W–B

Brake Fluid Level Warning SW Radiator Fan Resistor W–B Daytime Running Light Relay

Headlight RH (High)

W–B

E1 W–B

E4

W–B

Front Wiper Motor

W–B

E1 W–B W–B W–B

3 IA4

Washer Level Sensor W–B

W–B

E1 W–B W–B W–B

(GND1) ABS Actuator with ECU (GND2)

E1

W–B

EA

ED

(E02)

W–B

(E01) Engine Control Module (E1)

W–B

C A A A

B B A B B B BR 1 II1 BR

BR

(SG)

Data Link Connector 3

(E03)

W–B

W–B

Idle Air Control Valve

Heated Oxygen Sensor (Bank 1 Sensor 1) Heated Oxygen Sensor (Bank 1 Sensor 2) Ignition Coil and Igniter No. 1 Ignition Coil and Igniter No. 2

BR

BR

A A A A C A A A

BR

8 II2

J 4(A), J 5(B) Junction Connector

BR

W–B

W–B

BR

5 II2

BR

(ET)

Combination Meter

W–B

E2 W–B

W–B

W–B

C B

BR

Ignition Coil and Igniter No. 3 Ignition Coil and Igniter No. 4

W–B

E2

W–B

BR

C B

C A

BR

Vehicle Speed Sensor (Combination Meter)

W–B

EC

EB

J 2(A), J 3(B) Junction Connector

194
2004 COROLLA (EWD533U)

I

TVIP ECU

W–B

I8 W–B

W–B

W–B

Glass Breakage Sensor ECU

Security Indicator

W–B

I8 W–B

W–B

19 3A 12 3A 11 4B 12 4B 13 4B W–B W–B (USA) W–B

P–POINT Relay

3

(T)

Combination SW

Buckle SW RH Occupant Detection Sensor

W–B

4 IG1

W–B

14 3A

(ECC) W–B

Combination SW

3 IA5 W–B

Buckle SW LH Seat Position Sensor Shift Lock Control ECU

W–B

2 IG1 W–B

W–B

15 3A 16 3A 17 3A 18 3A 20 3A 21 3A

Cruise Control Actuator Cruise Control ECU

14 4B 15 4B 16 4B 17 4B 18 4B 19 4B 11 3A W–B 22 4B

W–B

(E)

Combination SW

O/D Main SW

W–B

W–B

(CG)

Data Link Connector 3

Clock

W–B

W–B

Turn Signal Flasher Relay Combination Meter

Air Inlet Control SW

W–B

W–B

(EP)

Hazard SW

W–B

W–B

Rheostat

Door Key Lock and Unlock SW Front RH Door Lock Motor Front RH Door Unlock Detection SW Front RH

W–B

W–B

Remote Control Mirror SW

21 4B W–B B3 W–B 1 IJ2 5 IH1 10 II2 W–B A W–B A W–B W–B A W–B A J7 Junction Connector

Door Lock Control SW Front RH

Blower Resistor

W–B

Engine Control Module

(EC)

W–B

W–B

Blower SW

A

HTR Relay

3 W–B

W–B

A

A

W–B

W–B

(L) Moon Roof Control Relay and SW Personal Light (GND)

A

W–B 10 IH

W–B

B2 W–B P/W Relay B W–B (*1 * 3) IG 4 IF W–B W–B

Inner Mirror Personal Light

B (*1 * 2)

B1

(E) Moon Roof Motor and Limit SW (E)

W–B

B2 W–B W–B 1 IE 3 II 10 II

Integration Relay

W–B

B2

ST Relay

(E1) Airbag Sensor Assembly (E2)

W–B

IG1 Relay

W–B

Noise Filter

* 1 : w/ Automatic Glare–Resistant EC Mirror * 2 : w/ Moon Roof * 3 : w/o Moon Roof

195
2004 COROLLA (EWD533U)

I GROUND POINT

Rear Combination Light LH Rear Combination Light RH

W–B

J 8(A), J 9(B) Junction Connector A A B A A B A B A A A A A A W–B

W–B

High Mounted Stop Light

W–B

Door Control Receiver

W–B

W–B

License Plate Light LH License Plate Light RH

W–B

Rear Combination Light LH Rear Combination Light RH

W–B

W–B

W–B

W–B

Fuel Pump

BI

BH

Radio and Player

BR

B

Rear Window Defogger

W–B IF BJ B4 W–B W–B (* 4) (* 4) (* 4) W–B (* 4)

(E) Power Window Master SW (E)

W–B

A

A W–B

6 IC1

W–B (* 5)

B4

W–B (* 5)

Door Key Lock and Unlock SW Front LH Door Lock Motor Front LH Door Unlock Detection SW Front LH

J6 Junction Connector W–B A W–B

W–B (* 5)

Door Lock Control SW Front LH

(EW)

Combination SW

A

W–B

(EL)

Combination SW

A

W–B

(–)

Combination Meter

W–B

A

A

W–B

Unlock Warning SW

A * 4 : w/ Power Window * 5 : w/o Power Window

W–B

Cigarette Lighter Power Outlet (Front) W–B

A

W–B

2 IF1

Power Outlet (Rear)

W–B

W–B

Rear Window Defogger SW

IE

196
2004 COROLLA (EWD533U)

I
: Parts Location
Code J2 J3 J4 A B A 35 35 35 See Page J5 J6 J7 Code B 35 35 35 See Page J8 J9 Code A B 36 36 See Page

: Relay Blocks
Code 1 3 22 28 See Page Relay Blocks (Relay Block Location) Engine Room R/B (Engine Compartment Left) RH R/B (Right Side of the Instrument Panel Reinforcement)

: Junction Block and Wire Harness Connector
Code IE IF IH II 3A 4B 28 30 Instrument Panel Wire and RH J/B (Right Side of the Instrument Panel Reinforcement) Instrument Panel Wire and Center J/B (Behind the Combination Meter) 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) ( ) 25 See Page Junction Block and Wire Harness (Connector Location) Roof Wire and Instrument Panel J/B (Lower Finish Panel)

: Connector Joining Wire Harness and Wire Harness
Code IA4 IA5 IA6 IC1 IF1 IG1 IH1 II1 II2 IJ2 40 42 42 42 42 42 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel) Console Box Wire and Instrument Panel Wire (Under the Instrument Panel Center) Instrument Panel Wire and Instrument Panel No.3 Wire (Front Side of the Parking Brake Lever) Instrument Panel Wire and A/C Sub Wire (Left Upper Side of the Blower Unit) Engine Wire and Instrument Panel Wire (Blower Unit RH) Front Door RH Wire and Instrument Panel Wire (Right Kick Panel) 40 Engine Room Main Wire and Instrument Panel Wire ( g (Left Side of the Instrument Panel Reinforcement) ) See Page Joining Wire Harness and Wire Harness (Connector Location)

: Ground Points
Code EA EB EC ED IE IF IG BH BI BJ 38 38 38 40 40 44 44 44 See Page Ground Points Location Front Right Fender Left Side of the Cylinder Head Front Left Suspension Tower Behind the Combination Meter Right Kick Panel Under the Left Quarter Pillar Lower Back Panel Under the Right Quarter Pillar

: Splice Points
Code E1 E2 E4 I8 38 38 38 42 See Page Wire Harness with Splice Points Engine Room Main Wire Engine Wire Engine Room Main Wire Instrument Panel Wire Code B1 B2 B3 B4 44 44 44 See Page Wire Harness with Splice Points Roof Wire Front Door RH Wire Front Door LH Wire

197
2004 COROLLA (EWD533U)

J POWER SOURCE (Current Flow Chart)

198
2004 COROLLA (EWD533U)

J

199
2004 COROLLA (EWD533U)

J POWER SOURCE (Current Flow Chart) Engine Room R/B,Engine Room J/B (See Page 22)
Fuse 5A 10A 10A 10A 10A 10A ALT–S HAZARD HEAD LH LWR HEAD LH UPR HEAD RH LWR HEAD RH UPR System Charging Turn Signal and Hazard Warning Light Headlight Headlight Headlight Combination Meter Headlight Horn TVIP System Wireless Door Lock Control ABS Clock Combination Meter Cruise Control Headlight Illumination Interior Light Light Reminder Buzzer and Key Reminder Buzzer Radio and Player Seat Belt Warning SRS TVIP System Wireless Door Lock Control 15A 15A 30A EFI FOG ABS NO.1 Electronically Controlled Transmission Engine Control Fog Light ABS ABS Charging Combination Meter Cruise Control 30A MAIN Electronically Controlled Transmission Engine Control SRS Starting and Ignition TVIP System 30A 40A 40A RDI FAN ABS NO.2 HEAD MAIN Radiator Fan ABS Headlight TVIP System Wireless Door Lock Control Page 56 78 70 70 70 180 70 102 134 126 154 106 180 148 70 86 90 168 176 172 159 134 126 142 58 76 154 154 56 180 148 142 58 159 52 134 186 154 70 134 126

10A

HORN

15A

DOME

∗ These are the page numbers of the first page on which the related system is shown.

200
2004 COROLLA (EWD533U)

J
Fuse 100A ALT System Charging Illumination Taillight Page 56 86 82

Instrument Panel J/B (See Page 24)
Fuse 7.5A 10A 10A OBD A/C ECU–B System Engine Control Air Conditioning Fog Light Headlight TVIP System ABS Cruise Control Radiator Fan Shift Lock TVIP System ABS Air Conditioning Automatic Glare–Resistant EC Mirror with Compass Back–Up Light Charging Combination Meter Cruise Control Electronically Controlled Transmission Engine Control Fog Light Headlight Heater Interior Light Light Reminder Buzzer and Key Reminder Buzzer Moon Roof Power Window Rear Window Defogger Seat Belt Warning SRS Turn Signal and Hazard Warning Light 10A M–HTR/DEF I–UP Engine Control ABS Charging Combination Meter Cruise Control Electronically Controlled Transmission Engine Control SRS ∗ These are the page numbers of the first page on which the related system is shown. Page 58 188 76 70 134 154 148 186 166 134 154 188 112 96 56 180 148 142 58 76 70 192 90 168 140 114 174 172 159 78 58 154 56 180 148 142 58 159

10A

ECU–IG

10A

GAUGE

15A

AM2

201
2004 COROLLA (EWD533U)

J POWER SOURCE (Current Flow Chart)
Fuse 15A AM2 System Starting and Ignition TVIP System Cigarette Lighter Clock Power Outlet Radio and Player Remote Control Mirror 15A P/POINT Power Outlet ABS Cruise Control Electronically Controlled Transmission Engine Control Shift Lock Stop Light Clock Engine Control Headlight Illumination Light Reminder Buzzer and Key Reminder Buzzer Taillight 15A 25A 25A 30A 40A 40A WASHER DOOR WIPER POWER DEFOG HEATER Wiper and Washer Door Lock Control Interior Light Wireless Door Lock Control Wiper and Washer Moon Roof Power Window Rear Window Defogger Air Conditioning Heater Page 52 134 104 106 108 176 110 108 154 148 142 58 166 94 106 58 70 86 168 82 98 118 90 126 98 140 114 174 188 192

15A

CIG

15A

STOP

15A

TAIL

∗ These are the page numbers of the first page on which the related system is shown.

202
2004 COROLLA (EWD533U)

Memo

203
2004 COROLLA (EWD533U)

K CONNECTOR LIST
A1
Gray 1 1 6 2 7 3 8 4 5 9

A2
Gray

A3
Gray

A4

A5
Yellow

1

2

1

2

1

2

A6
Yellow

A7
Black

A8
Black

A10

A11
Black

1

2

1 2

1 2 3 4 5 6 7 8 9 10

1 2 3 4

1 2 3 4 5

A12
Yellow

A13
Yellow

A14
Yellow

A15
Yellow

A

B 1 2 3

A B

A 4 5 6

B 1 2 3 4

1 2 3 4 5 6 7 8 9 101112

7 8 9 1011121314151617 1819 2021 22 23 2425 26 27 28

1 2 3 4 5 6 7 8 9 101112

A16
Yellow

A17

A18

A19
Black

A20
Black

B1
Gray

1 1 2 3 4 1 2 3 4

1 2

1 2 1 2

B2
Gray

B3

B4
Black

B5

B6

1 1 2 2 1 3 2 4

1 4 5

2 3 6 7 8

1 2 3 4 5 6

B7

C1
Gray

C2
Brown

C3
Gray

C4
Black 1

C5

1 2 3 4

1 2

1 2

1 2

1 2 3 4

2

204
2004 COROLLA (EWD533U)

K
C6
Gray 1 2

C7

C8

C9

1 2 3 4 1 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

C10
Black

C11
Black 1 2

C12
3 4

C13

1 2 3 4 5 6 7 8 9 10 11 12

1 2 3 4 5 6 7 8 9 10

5 6 7 8 9 10 11 12 13

1 2

C14

D1

D2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

1

3 4 5 6 7 8 9 10 11 2 12 13 14 15 16 17 18 19 20

D3

D4

D5

D6

D7

D8

1 1 2 3 4 5

1

1

1 1 2 3 4 5 6 7 8 9 10

D9

D10

D11

D12

1 1 2 3 4 5 6 7 8 9 10

2 1 2 3 4 5 6 7 8 9

1

2

3 4 5 6

3 4 5 6

10 11 12 13 14 15 16 17 18

205
2004 COROLLA (EWD533U)

K CONNECTOR LIST
D13 D14 E1
Gray

E2
Dark Gray 1 2 1 2 3

E3

1

2

3

4

1

2

3

4

1 2 3 4 5 6

4

5

6

7

5 6 7 8 9 10

5 6 7 8 9 10

8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34

E4

E5

E6

1

2

3

4

5

6

7 26 27 34 35

1

2

3

4

5

6

1

2

3

4

5

6

7 24 25 30 31

8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 28 29 30 31 24 25 32 33

7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 26 27 28 29

F1
Gray

F2
Gray

F3
Gray

F4
Gray

F5
Black

1

2

1

2

1 2 3

1 2 3

1 2 3

F6
Black

F7

F8

F9

F10

G1
Black

1 2 3 4 5

1 2 3

1 1 2 1 2 4

2 5

3

1

2

3

G2

G3
12 3 456 7 8

H1
Black

H2
Gray

H3
Black

1

1

2

1

2

1

2

H4
Gray

H5
Dark Gray

H6
Black 1

H7
Black

H8
Dark Gray

H9
(Bulb Type) Gray

1

2

1 2 3 4

1 2 3 4 5 6

2 1 4 3

1 2

206
2004 COROLLA (EWD533U)

K
H9
(LED Type) Black

I1
Gray

I2
Brown

I3
Brown

I4
Brown

2 1

1 2 3

1 2 3 4

1 2 3 4

1 2 3 4

I5
Brown

I6
Gray 1 2

I7
Gray 1 2

I8
Gray 1 2

I9
Gray 1 2

1 2 3 4

I10

I11

I12
Black

1 2 3 4 5 6 7 1 4 2 5 3 6 1 2 3 4 5 6 7 8 9 13 14 15 16 17 18 19 20 21 22 23 24 25 26 10 11 12

I13

J1
Black A A A B B CCCDD DB

J2

J3

1 2 3

A A B B C C C D D E E F F F F G G G H H H H

A A B B C C C D D E E F F F F G G G H H H H

J4

J5

J6

J7

A A A A A A B B B C C C

A A A A A A B B B C C C

A A A A A A A A A A A

A A A A

A A

A A

J8

J9

J10
A A A B B CCCDD DB

K1
Black 1 2

L1
Gray 1 2

A A A A A A B B B C C C

A A A A A A B B B C C C

L2
Gray 1 2

L3

L4

M1
Black

M2
12 3 456 78

M3
Brown 1 2 3 4 5 6

1

2

1

1 2 3 4 5

207
2004 COROLLA (EWD533U)

K CONNECTOR LIST
N1
Gray

N2

O1
Gray

P1
Black

P2
Gray

P3
Brown

1 1 2 1 2 1 2

1 4

1 3

P4
1 2

P5

P6

P7

P8

1 2 3 4 5

1 2 3 4 5

1 2 3 4 5

1

2

3 4 5 6

P9

P10

P11

P12
Yellow

P13
Yellow

1

2

1

2

1

2

1

2

1

2

3 4 5 6

3 4 5 6

3 4 5 6

R1
Gray

R2
Black 1 2

R3

R4

R5
Black

3 4

1

2 1 2 3 4 5

5 6 7 8 9 10 1 2 1 2

3 4 5 6

R6

R7

R9

R10

R11

1 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 1 2 3 4

2 1 2 3 4

R12

R13

R14

R15
Black 1

R16
Black 1

R17

1

2 2 1 2 1 3 2 1

208
2004 COROLLA (EWD533U)

K
*1 : w/ Cruise Control *2 : w/o Cruise Control

R18

S1
Black

S2

S3
Black 1

3 2 1

1

1 23

2 24

3

4 5 6

7 8 9 10 11 12

13 14 15 16 17 18 19 20 21 22 25 26 27 28 29 30 31 32 33 34

S4
Black

S5

S6
Yellow

S7
Yellow

S8

1 1 2 3 4 1 2 3 4 5 1 2 1 2 4 2 3

S9
(*1) Blue

S9
(*2) Black

S10
Yellow

S11
Yellow

T1
Black

1 3

2 4

1 3

2 4

1 2 3 4

1 2 3 4

1 2 3

T2
Black 12 3 456 7 8

T3

T4

T5

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

2

1

2

1

U1
Black

V1
Black

V2
Black

V3
Blue

V4
Black

V5
Black

1 2

1 2 3

1 2 1 2

1 2 3

1

2

W1
Black

1

2

209
2004 COROLLA (EWD533U)

L PART NUMBER OF CONNECTORS
Code A1 Part Name A/C Magnetic Clutch A/T Shift Lever Position SW A2 Back–Up Light SW Park/Neutral Position SW A3 A4 A5 A6 A7 ABS Speed Sensor Front LH ABS Speed Sensor Front RH Airbag Sensor Front LH Airbag Sensor Front RH Ambient Temp. Sensor A/C SW A8 Air Inlet Control SW Defroster Mode Detection SW A/T Shift Lever Illumination A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 B1 B2 B3 B4 B5 B6 O/D Main SW Air Inlet Control Servo Motor Airbag Sensor Assembly Airbag Sensor Assembly Airbag Sensor Assembly Airbag Squib (Front Passenger Airbag Assembly) Airbag Squib (Steering Wheel Pad) Antenna Amplifier Automatic Light Control Sensor ABS Speed Sensor Rear LH ABS Speed Sensor Rear RH Back–Up Light SW Brake Fluid Level Warning SW Blower Motor Blower Resistor Blower SW Buckle SW LH Seat Position Sensor Buckle SW RH B7 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 Occupant Detection Sensor Camshaft Position Sensor Camshaft Timing Oil Control Valve (VVT) Crankshaft Position Sensor Cruise Control Actuator Cigarette Lighter Power Outlet (Front) Cigarette Lighter Illumination Clock Clutch Start SW Combination Meter Combination SW Combination SW Combination SW 90980–10760 90980–11148 90980–11950 90980–10825 90980–12169 90980–12183 90980–12008 90980–12007 F10 G1 G2 G3 H1 H2 H3 90980–11950 90980–10947 90980–11162 90980–10947 90980–11150 F4 F5 F6 F7 F8 F9 90980–12257 F3 90980–11900 90980–11250 90980–11207 90980–10214 90980–11136 90980–10877 90980–10871 90980–11107 E1 E2 E3 E4 E5 E6 F1 F2 90980–1221 1 D9 90980–11909 90980–11869 90980–11872 90980–11867 90980 12160 90980–12160 D11 D12 D13 D14 D10 90980–12162 D8 90980–11856 90980–11030 90980–11003 90980–11784 Part Number 90980–11271 Code C13 C14 D1 D2 D3 D4 D5 D6 D7 Part Name Cruise Control Clutch SW Cruise Control ECU Data Link Connector 3 Daytime Running Light Relay Door Control Receiver Door Courtesy SW Front LH Door Courtesy SW Front RH Door Courtesy SW Rear LH Door Courtesy SW Rear RH Door Key Lock and Unlock SW Front LH Door Lock Motor Front LH Door Unlock Detection SW Front LH Door Key Lock and Unlock SW Front RH Door Lock Motor Front RH Door Unlock Detection SW Front RH Door Lock Control SW Front LH Door Lock Control SW Front LH Power Window Master SW Door Lock Control SW Front RH Door Lock Motor Rear LH Door Lock Motor Rear RH Electronically Controlled Transmission Solenoid Engine Coolant Temp. Sensor Engine Control Module Engine Control Module Engine Control Module Engine Control Module Front Fog Light LH Front Fog Light RH Front Parking Light LH Front Turn Signal Light LH Front Parking Light RH Front Turn Signal Light RH Front Washer Motor Front Wiper Motor Front Passenger Seat Belt Warning Light Front Door Speaker LH Front Door Speaker RH Fuel Pump Fuel Sender Generator Generator Glass Breakage Sensor ECU Headlight LH (High) Headlight LH (Low) Headlight RH (High) 90980–11077 90980–11349 90980–09373 90980–10799 90080–98039 90080–98038 90080–98039 90980–10935 90980–10981 90980–11599 90980–11296 90980–11020 90980–11156 90980–12226 90980–10854 90980–10737 90980–12144 90980–12145 90980–12146 90980–12142 90980–12122 90980–10797 90980–10797 90980–12226 90980–10871 Part Number 90980–10906 90980–12094 90980–11665 90980–12034 90980–11909

Note: Not all of the above part numbers of the connector are established for the supply.

210
2004 COROLLA (EWD533U)

L
Code H4 H5 H6 H7 H8 H9 I1 I2 I3 I4 I5 I6 I7 I8 I9 I10 I11 I12 I13 J1 J2 J3 J4 J5 J6 J7 J8 J9 J10 K1 L1 L2 L3 L4 M1 M2 M3 N1 N2 O1 P1 P2 P3 Part Name Headlight RH (Low) Heated Oxygen Sensor (Bank 1 Sensor 1) Horn Hazard SW Heated Oxygen Sensor (Bank 1 Sensor 2) High Mounted Stop Light (Bulb Type) High Mounted Stop Light (LED Type) Idle Air Control Valve Ignition Coil and Igniter No.1 Ignition Coil and Igniter No.2 Ignition Coil and Igniter No.3 Ignition Coil and Igniter No.4 Injector No.1 Injector No.2 Injector No.3 Injector No.4 Ignition SW Integration Relay Inner Mirror Personal Light Interior Light Junction Connector Junction Connector Junction Connector Junction Connector Junction Connector Junction Connector Junction Connector Junction Connector Junction Connector Junction Connector Knock Sensor License Plate Light LH License Plate Light RH Luggage Compartment Light Luggage Compartment Light SW Mass Air Flow Meter Moon Roof Control Relay and SW Personal Light Moon Roof Motor and Limit SW Noise Filter (Ignition) Noise Filter (Rear Window Defogger) Oil Pressure SW Power Steering Oil Pressure SW Pressure SW Parking Brake SW 90980–10799 90980–11011 90980–10843 90980–10825 90980–11363 90980–11428 90980–10943 90980–10871 90980–11097 90980–11317 90980–11148 90980–11661 90980–10803 90980–11875 90980–11661 90980–11539 90980–11686 90980–11915 90980–11794 90980–10908 90980–10803 90980–11778 90980–12203 90980–11875 90980–11885 Part Number 90080–98038 90980–10869 90980–10619 90980–10933 90980–10794 90980–10860 90980–11367 90980–11145 Code P4 P5 P6 P7 P8 P9 P10 P11 P12 P13 R1 R2 R3 R4 R5 R6 R7 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 T1 T2 T3 T4 T5 U1 V1 V2 Part Name Power Outlet (Rear) Power Window Control SW Front RH Power Window Control SW Rear LH Power Window Control SW Rear RH Power Window Motor Front LH Power Window Motor Front RH Power Window Motor Rear LH Power Window Motor Rear RH Pretensioner LH Pretensioner RH Radiator Fan Motor Radiator Fan Resistor Radio and Player Radio and Player Rear Window Defogger SW Remote Control Mirror SW Rheostat Rear Combination Light LH Rear Combination Light LH Rear Combination Light RH Rear Combination Light RH Rear Speaker LH Rear Speaker RH Rear Window Defogger Rear Window Defogger Remote Control Mirror LH Remote Control Mirror RH Skid Control ECU with Actuator Starter Starter Security Indicator Shift Lock Control ECU Side Airbag Squib LH Side Airbag Squib RH Starter Cut Relay Stop Light SW Side Airbag Sensor LH Side Airbag Sensor RH Throttle Position Sensor Turn Signal Flasher Relay TVIP ECU Tweeter LH Tweeter RH Unlock Warning SW Vehicle Speed Sensor (Combination Meter) VSV (Canister Closed Valve) 90980–10915 90980–10860 90980–11143 90980–11162 90980–12225 90980–11261 90980–10799 90980–12169 90980–11864 82660–0C010 90980–11118 90980–10907 82824–12300 90980–09463 90980–11400 90980–11013 90980–11909 90980–11299 90980–10914 90980–10913 90980–10928 90980–10997 90980–10996 90980–10789 90980–11657 90980–12217 90980–10795 90980–11148 90980–10795 90980–11148 90980–12253 90980–10797 90980–10789 Part Number 90980–10760

211
2004 COROLLA (EWD533U)

L PART NUMBER OF CONNECTORS
Code V3 V4 V5 W1 VSV (EVAP) Vapor Pressure Sensor VSV (Vapor Pressure Sensor) Washer Level Sensor Part Name Part Number 90980–11156 90980–11143 90980–11859 90980–11068 Code Part Name Part Number

Note: Not all of the above part numbers of the connector are established for the supply.

212
2004 COROLLA (EWD533U)

L
Code Part Name Part Number Code Part Name Part Number

213
2004 COROLLA (EWD533U)

M OVERALL ELECTRICAL WIRING DIAGRAM

214
2004 COROLLA (EWD533U)

[A] : System Title [B] : Indicates the wiring color. Wire colors are indicated by an alphabetical code. B L P = Black = Blue = Pink W = White V Y = Violet = Yellow G = Green BR = Brown SB = Sky Blue LG = Light Green GR = Gray

[F] : Junction Block (The number in the circle is the J/B No. and the connector code is shown beside it). Junction Blocks are shaded to clearly separate them from other parts. Example:
3C indicates that it is inside Junction Block No.3

R = Red O = Orange

The first letter indicates the basic wire color and the second letter indicates the color of the stripe.
Example: L–Y

[G] : Indicates related system. [H] : Indicates the wiring harness and wiring harness connector. The wiring harness with male terminal is shown with arrows ( ). Outside numerals are pin numbers.

L (Blue)

Y (Yellow)

2004 COROLLA (EWD533U)

[C] : The position of the parts is the same as shown in the wiring diagram and wire routing. [D] : Indicates the pin number of the connector. The numbering system is different for female and male connectors.
Example : Numbered in order from upper left to lower right Numbered in order from upper right to lower left Female Male ( )

[I]

: ( ) is used to indicate different wiring and connector, etc. when the vehicle model, engine type, or specification is different.

[J] : Indicates a shielded cable.
Female Male

The numbering system for the overall wiring diagram is the same as above [E] : Indicates a Relay Block. No shading is used and only the Relay Block No. is shown to distinguish it from the J/B.
Example : Indicates Relay Block No.1

[K] : Indicates and located on ground point. [L] : The same code occuring on the next page indicates that the wire harness is continuous.

215

M

216
2004 COROLLA (EWD533U)

M OVERALL ELECTRICAL WIRING DIAGRAM

SYSTEM INDEX
SYSTEMS LOCATION SYSTEMS LOCATION
ABS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12–2 Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26–2 Automatic Glare–Resistant EC Mirror with Compass . . . . . . . . . . . 14–4 Back–Up Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10–8 Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2 Cigarette Lighter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21–2 Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21–2 Combination Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24–2 Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11–2 Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15–2 Electronically Controlled Transmission . . . . . . . . . . . . . . . . . . . . . . . . 10–2 Engine Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2 Fog Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–8 Headlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–3 Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27–2 Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21–4 Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3 Illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8–2 Interior Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9–2 Key Reminder Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19–4 Light Reminder Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19–3 Moon Roof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18–3 Power Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21–3 Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1~27–1 Power Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17–2 Radiator Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25–3 Radio and Player . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23–2 Rear Window Defogger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22–2 Remote Control Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20–2 Seat Belt Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19–2 Shift Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18–4 SRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13–2 Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2 Stop Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–2 Taillight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–2 Turn Signal and Hazard Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . 5–2 TVIP System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16–2 Wiper and Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14–2 Wireless Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15–8

1 COROLLA

P ow er S ou rc e 1

S ta rtin g 2 3

Ig nitio n 4

B

5 AM2

IG2 6 ST2 4

B–W R

B–W * 1 : w/ TVIP System * 2 : w/o TVIP System

5 IL 6 IM I10 Ignition SW R (M/T) R (A/T)

15A AM2 3 IA2 12 II2

R (A/T)

Engine Control Module <3–3>

12 IC B–W

3 3 IM

2 ST Relay R (M/T) R (A/T)

E B J 2(A), J 3(B) Junction Connector A A A A B–W B–W

10 EA1 B–W

B–R

2004 COROLLA (EWD533U)

5

1

2 IA4 1 IM B–R B (*2) B 1 B–W (*1) B–R (*1) 2 S8 Starter Cut Relay 30A MAIN 1 3 4 B (*1) 10 IA5 B (*1) 11 II2 B 1 1A 7 II1 B B (*1 M/T) B (*2 M/T) B (*1) B (*2) G A B (M/T) B FL MAIN 2. 0L 1 A 1 B S 2(A), S 3(B) Starter B (* 2) W–B B (A/T) B–R B (*2) Engine Control Module<3–3> Battery 111 111 IE A J6 Junction Connector Behind the Combination Meter 11 IL TVIP ECU <16–3> W–B 1 C8 Clutch Start SW 2 4 IF R (A/T)

B–W 111 B–W B–W

B–W B–W

B–W

1 1 9 A2 Park/Neutral Position SW B P N 6 L N1 Noise Filter (Ignition)

1

1

1

I2 Ignition Coil and Igniter No. 1

I3 Ignition Coil and Igniter No. 2

I4 Ignition Coil and Igniter No. 3

I5 Ignition Coil and Igniter No. 4

+B

+B

+B

+B

IGT 3

IGF 2

GND 4

IGT 3

IGF 2

GND 4

IGT 3

IGF 2

GND 4

IGF 2

IGT 3

GND 4

1

W–B

W–B

W–B

W–B

Y–G

R–L

L–Y

L–Y

L–Y

L–Y

GR

B (M/T)

W

2

W–B B (A/T) G A B (A/T) H B G A J 2(A) Junction Connector F A Y–G R–L

W–B

W–B

J 2(A), J 3(B) Junction Connector

W–B

F A L–Y

F A L–Y

F A L–Y W

L–Y

GR Engine Control Module<3–5><3–6>

W–B Left Side of the Cylinder Head EC

2 COROLLA

P ow e r S ou rc e 1 2 3

C h arg in g 4

ACC W B–W W 1 AM1 IG1 2 B–Y

B–Y

1 IA

2 IF

5 IL 5 B 5 AM2 IG2 6 ST2 W 12 IF 6 IM 25A AM1 B–W 10A GAUGE 3 8 IK 2 1 IG1 Relay

I10 Ignition SW

B–O

15A AM2 32 Daytime Running Light Relay<4–2>

2004 COROLLA (EWD533U)

2 IG C9 Combination Meter

4 IF

10 IH

1 IB

3 IM B–R

R–W

W

Charge

22 3B

B–G

1 1D

W 2 1

W

W

2 IA4 B–R

20 3B 31 R–W

1 1B

1

1 1C

1 Y Y

2 5A ALT–S 100A ALT 1

2 30A MAIN

8 3B

9 3B

5 EA1

14 II2

R–W

W–B

W–B

W

1

10 3B B A J 4(A), J 5(B) Junction Connector

1 1A

Y C B 2 II2 FL MAIN 2. 0L R–W B–G W

B 1 A L S A B B Battery IG A 3 1 Y 2 G 1(A), G 2(B) Generator

A

J6 Junction Connector Right Kick Panel

A

J7 Junction Connector

Behind the Combination Meter

IE

IG

3 COROLLA

(Cont. next page)

P ow e r S ou rc e 1
B–W

E n gin e C o ntro l 2 3 4
R–B A

B–O 5 AM2 IG2 6 ST2 32 C9 Combination Meter I10 Ignition SW B–W B R–B 7 IJ 7. 5A OBD B–O B–W

8 II1 B–W

B–W B–W B–W

Malfunction Indicator Lamp

R–W

B–W

B–W

B–W

B–W

10 EA1 6 IM B–W 12 IC 5 IL 8 IK

1 I6 Injector No. 1

1 I7 Injector No. 2

1 I8 Injector No. 3

1 I9 Injector No. 4

1 IA2 15A AM2

33 2

2

2

2

3 EA1

R–W

R–W

2004 COROLLA (EWD533U)

R–W

B–W

R–Y

1 IB

3 IM

5 C/OPN Relay

1

W

Y

B

L

1 5 1

1

3 D BATT 3 2 FC NSW 8 B R (A/T) STA 9 B E03 5 B

11 D W

1 A # 10

2 A #20

3 A #30

4 A # 40

2 IA4

B–R EFI Relay 3 1 2 30A MAIN 15A EFI B–R

E 3(A), E 4(B), E 5(C), E 6(D) Engine Control Module E01 7 A E02 6 A RSO 5 A EVP 12 A CCV 1 C

4 IG 2

19 ID

1 IG

10 D

1 1C 2 100A ALT 2

W 1 1 1 1 1A B FL MAIN 2. 0L Battery

B

1

1 B W–B

G–R

L

B–R

W–B

W–B

B–L

L–B

17 II2

9 EA1

B

Ignition SW <1–3>

Clutch Start SW(M/T) Park/Neutral Position SW(A/T) <1–2>

L

4 9 II1 M 5

F10 Fuel Pump

1

C A

C A J 4(A), J 5(B) Junction Connector

1 I1 Idle Air Control Valve DUTY GND 3 VISC 2

1 V3 VSV (EVAP)

1 V2 VSV (Canister Closed Valve)

W–B

B B

B B

2

2

W–B

Front Left Suspension Tower

B B ED

Under the Left Quarter Pillar

B

B

B

B

W–B W–B B B B B B

B

BH

Left Side of the Cylinder Head

EC

(Cont. next page)

R–B

B TBP 8 ID2 V5 VSV (Vapor Pressure Sensor) T1 Throttle Position Sensor VTA 21 A LG 3 32 C 13 A 2 C Air Conditioning System<26–4> VC 18 A BR 1 2 33 C 31 C ACLD A/CS ACMG PRS THR J 2(A), J 3(B) Junction Connector B A Y 6 D CF Y B A FAN D B Radiator Fan System<25–3> 7 D 16 II2 Y 16 D PTNK 2 ID2 21 D Cruise Control ECU <11–3> L L 2 Combination Meter <24–2> 14 C 1 ID2 Airbag Sensor Assembly <13–5> 14 D F/PS Y E 3(A), E 4(B), E 5(C), E 6(D) Engine Control Module BR 6 ID2 BR 1 3 Y Y–R THWO 19 C Stop Light SW <7–2> STP TAIL Relay(USA) <8–2> Combination SW (Canada)<8–2> II2 F B 12 D ELS G 7 BR H A F B BR E2 28 A H A BR BR G–W J 2(A), J 3(B) Junction Connector 13 D E2 Engine Coolant Temp. Sensor THW H A ” DEF I/UP” Fuse <22–3> ELS2 W IDLO L–W 19 A W 2 1 11 A IGT4 W 23 A IGF L–Y THA 32 B 20 A Y–B 4 L–W G 3 2 M1 Mass Air Flow Meter THA E2 BR 5 B E2G VG +B B 1 P1 Power Steering Oil Pressure SW PSW 29 B L–R 1 J7 Junction Connector EC II2 14 A 28 B B–Y 1 2 OCV– W–B W–B 10 A 15 A Y OCV+ B 10 A IGT2 9 A VG 8 A IGT1 R–L 24 B Y–G EVG Ignition Coil and Igniter No. 1, No. 2, No. 3 and No. 4 <1–3><1–4> IGT3 GR BR Y V4 Vapor Pressure Sensor 7 ID2 4 D R 1 2 R B B B

E n gine C on trol

6

7

8

C

A

3 COROLLA (Cont’ d)

C2 Camshaft Timing Oil Control Valve (VVT)

5

R–B

A

2004 COROLLA (EWD533U)

B

B

IG

Right Kick Panel

SG

12

CG

16 4B

21 4B

A/B

B–Y J 4(A), J 5(B) Junction Connector A A A B EB (*1) 8 II2 BR 2 4B B B C B B B 6 II1 B 1 4B 4 4B B (*1) Left Side of the Cylinder Head (*1) BR BR BR BR BR (*1) A B 11

Airbag Sensor Assembly <13–6> Skid Control ECU with Actuator <12–4> Airbag Sensor Assembly <13–5> A B Cruise Control ECU<11–4> A B Skid Control ECU with Actuator <12–4> A A A A (*1) A A BR A A

TS

GR 12

D1 Data Link Connector 3

* 1 : Shielded

5 4C

P–B

2 4C

P–B

TC

3 4C

4 4C

11

20 D

13

TC

P–B EKNK W K1 Knock Sensor B 2 1

1 4C

P–B

P–B

WFSE

19 D

P 15

P

WFSE

KNK1

BAT

SIL

2 3B

3 3B

18 D

16

7

SIL

R–B BR

L–R

L–R

E1

E n gine C on tro l

4 3B

Airbag Sensor Assembly <13–5> L–R 9 II2

1 3B

Skid Control ECU with Actuator <12–4> (*1) L–R E 3(A), E 4(B), E 5(C), E 6(D) Engine Control Module OX1B OX E1 II2 W 4 18 3 W (*1) BR

17 C

Combination Meter <24–2> SPD HT1B HT 4 C +B P–B 2 H8 Heated Oxygen Sensor (Bank 1 Sensor 2) 1

V–W

10

(*1) 26 A G22+ B (*1)

OX1A

W 1 2

23 B

C1 Camshaft Position Sensor B

5 D

Combination Meter <24–3>

B

TACH

21 B

7 B

1 B

2 B

+B

J 2(A), J 3(B) Junction Connector 34 A A B E A NE– W

E A

H5 Heated Oxygen Sensor (Bank 1 Sensor 1) OX 3 E1 W B BR 4

3 COROLLA (Cont’ d)

9

C3 Crankshaft Position Sensor HT1A NE+ HT 27 A 4 B 1 +B B 2 (*1) 1 P B 2

A

R–B

2004 COROLLA (EWD533U)

3 4B

1 D

B

A

4

IE

W–B W–B

1 II1

BR BR W–B 5

J6 Junction Connector

Behind the Combination Meter

4 COROLLA
* * * *

(Cont. next page)
1 : USA 2 : w/ TVIP System 3 : w/ Wireless Door Lock 4 : w/ Fog Light G R A18 Automatic Light Control Sensor G–O (*4) A B C

P ow e r S ou rc e 1 2 3

H e ad lig ht

4

Skid Control ECU with Actuator (w/ ABS)<12–4> Combination Meter (w/o ABS)<24–8>

Taillight System<6–1>

CLTB 1 G–Y (*1)

CLTS 4 G–B (*1)

CLTE 3 G–W (*1)

ACC 1 AM1 IG1 2 22 3B

1 P3 Parking Brake SW

Generator <2–2>

12 3B R–W R–B

1 IE1 G–Y (*1)

3 IE1 G–O (*1)

2 IE1 R–W G–O (*4) G–R (*1) R–B

R–W

1 IH

R–B 10A ECU–B

B–Y

12 IF

W I10 Ignition SW 1 25A AM1 IG1 Relay 2 1 IB

W

Y

2 IF

1 IA 5

2 IG

12 IG

3 +B

8 CHG–

15 T

14 TAIL

20 CSB

19 CSO

18 CSE

10 BRK

11 PKB

4 FOG

10A GAUGE

2004 COROLLA (EWD533U)

H D2 Daytime Running Light Relay Taillight System <6–1> R (*2) R (*3) 5 3C 4 3C R 7 R TVIP ECU <16–3> Integration Relay <15–7> 6 3C

HI 16 2

E

DIM 13

DRL 1

H–LP 6

3

W–B

W–R

R–Y

R–Y

R–B

W

W

R 1 1 2 40A HEAD MAIN 2 1 1

G 15A FOG

10 IH W–B

4 IF W–B

R 1 1D 1 1C R 13 10 12

R 8

9

2 C12 Combination SW E Light Control SW OFF Tail Head T RF H EL Dimmer SW Low High Flash 3 IA4 11 1 1A R–B E HL HU ED EL 100A ALT

1

R–Y

D

B W–R W–B W–B FL MAIN 2. 0L W–B A W–B J6 Junction Connector W–B A A W–B G W–B A F J7 Junction Connector A Battery IG Right Kick Panel Behind the Combination Meter IE ED Front Left Suspension Tower

4 COROLLA (Cont’ d)

H e ad lig h t
A B C G R G–O (*4)

F o g L ig ht 6 7 8
* 4 : w/ Fog Light

5

R

R R–B

1 1 3

1 R HEAD Relay R–B

1 3 1 1 10A HEAD LH UPR 2 1 1 2 1 R 10A HEAD RH UPR

1 1

1

2 1

5 1

R–B R–Y R–B

DIMMER Relay 5 1 2 1 G

2004 COROLLA (EWD533U)
D R–Y E R–B F W–R G W–B

G

W–R

R

1 10A HEAD LH LWR 2 R–Y 2 H2 Headlight LH (Low) H4 Headlight RH (Low) 1 R–B 1 IA4 R–B 1

1 6 IA6 10 IA2 1 FOG Relay 2 R–W W–R 10A HEAD RH LWR R R 2 1

1 5

1

4 IA2

14 C9 Combination Meter

3 1 R–Y 1 R

High Beam

R–W 2 1

R 2 H1 Headlight LH (High) H3 Headlight RH (High) 2 1 W–B 1 13 W–B R–B Front Left Suspension Tower W–B W–B W–B ED EA Front Right Fender

9 IA5 R

R–Y

2 Fog Light SW

BFG LFG OFF On 4 F1 Front Fog Light LH R F2 Front Fog Light RH R W–B G–O (*4)

C12 Combination SW

1

1

2 W–B W–B

2

Front Left Suspension Tower

ED

Front Right Fender

EA

5 COROLLA

P ow er S ou rc e 1 2

T urn S ign al an d H a z ard W a rning L igh t 3
R–W G–W

4

* 1 : w/ Wireless Door Lock * 2 : w/o Wireless Door Lock * 3 : w/ TVIP System

ACC R–W 1 AM1 IG1 2 W B–Y

22 3B

8 IA5

15 3B 2 IF I10 Ignition SW 1 W 12 IF 2 25A AM1 3 1 IA 5 1 IG 10A GAUGE IG1 Relay 2 IG G–W R–W 4 +B LL G–Y 4 IF G–B W–B G–O 1 IB 9 IL G–W 1 IK 11 IH 5 IH 13 IH 6 IG Y–B (*1) Y–B (*3) Y–B (*1) 2 3C G–R Y–B (*1) G–B G–Y 3 LR 2 T2 Turn Signal Flasher Relay

GND 7

EL 5

ER 6 Y–B(*2)

HAZ 8

2004 COROLLA (EWD533U)

3 3C

W

W 5 8 IC 1 IC 17 ID 12 ID 12 IH 5 IG TL Turn SW LH RH 6 E 7 TR H7 Hazard SW TVIP ECU <16–3> 3 1 3C

1

1 1D

1 1C

2 10A HAZARD

2 W–B G–B G–Y G–B G–Y G–B G–Y 100A ALT

Y–B (*1)

24 F3 Front Turn Signal Light LH F4 Front Turn Signal Light RH R9 Rear Combination Light LH R11 Rear Combination Light RH 3 Turn 3 Turn

25 C9 Combination Meter

C12 Combination SW

2

1

1 3

Integration Relay <15–3>

W–B

W–B

3

1 1A 2 B FL MAIN 2. 0L W–B

LH

RH

2

17 4B

15 4B

21 3A

4

4 2

W–B

W–B

W–B W–B

18 4B

21 4B

11 3A

W–B

W–B

Battery

W–B W–B W–B W–B A A A

J6 Junction Connector Front Left Suspension Tower

W–B

J7 Junction Connector

Behind the Combination Meter

IE

ED

EA

Front Right Fender

BI

Lower Back Panel

Right Kick Panel

IG

6 COROLLA

P o w er S o u rce 1
G–W (USA) 3 G–W (Canada) 1 3 TAIL Relay G–W (USA) 3

T aillig ht 2 3 4

7 IH 2 15A TAIL 3 G–B (USA) 5 3

2 IL

2 IC

2 ID

G

G

G

G

G

G (USA)

1 IB 14 TAIL D2 Daytime Running Light Relay A A G–W (USA) G (Canada) 1 1C 2 100A ALT G–W (Canada)

J 8(A), J 9(B) Junction Connector

B B

B B

C A A J1 Junction Connector

C A

C A

2004 COROLLA (EWD533U)

T 15 W Light Control SW OFF Tail Head 1 1A C12 Combination SW 1 B FL MAIN 2. 0L Battery Behind the Combination Meter

G

G

G

G

G

G

13 E T 1 1 1 F3 Front Parking Light LH F4 Front Parking Light RH R9 Rear Combination Light LH Tail Tail 1 2 2 R11 Rear Combination Light RH L1 License Plate Light LH L2 License Plate Light RH

2

2

1

1

4

4

W–B

W–B

10 W–B (USA) 11 4B W–B W–B W–B W–B 21 4B W–B (USA) A J6 Junction Connector Front Left Suspension Tower ED W–B W–B IE EA Front Right Fender Lower Back Panel BI

A A A W–B BH

J8 Junction Connector

Under the Left Quarter Pillar

H9 High Mounted Stop Light G–W (LED Type) A 1 2 J8 Junction Connector W–B (LED Type) Under the Left Quarter Pillar W–B Battery Lower Back Panel W–B 2 Stop 4 Cruise Control ECU <11–4> Shift Lock Control ECU <18–4> Engine Control Module<3–7> 1 1A B 1 1C 1 IB 2 1 FL MAIN 2. 0L BI BH W–B A A

4

J 8(A), J 9(B) Junction Connector

H9 High Mounted Stop Light B A G–W (Bulb Type) 1 2 W–B (Bulb Type)

C B

G–W

R11 Rear Combination Light RH C B B A G–W 2 Stop 4 W–B

S to p L igh t

G–W

R9 Rear Combination Light LH G–W

3

7 ID

G–W 10 3C G–W

13 3C

2

G–W (w/ ABS) Skid Control ECU with Actuator<12–4>

P ow e r S o urc e

15A STOP

1

11 3C

5 IC

1 IL

R–W G–W 2 1

S9 Stop Light SW

G–W

G–W

12 3C

G–W

100A ALT W

7 COROLLA

14 IC

R–W

2004 COROLLA (EWD533U)

R7 Rheostat GND 19 4B 21 4B IE Behind the Combination Meter W–B J6 Junction Connector A Battery 100A ALT 10 1 1C 1 1A 7 IH 1 IB G–W (*2) W B 2 1 15A DOME 7 IC 4 IL L–W L–W 1 2 1 FL MAIN 2. 0L 3 W–B

* 1 : USA * 2 : Canada

20 4C

18 4C

ILL–

6

+B

L–W 1

L–W

W–B

TAIL

LED

G 2

W–R 5

4

C9 Combination Meter

Clock <21–2>

G 18 Illumination 28

G

G

W–R

A10 A/T Shift Lever Illumination G 3 1 W–B

C6 Cigarette Lighter Illumination G 2 1 W–B

3

B5 Blower SW

Illu m in ation

G W–B 8 3

H7 Hazard SW G 5 4 W–B

G

G 1 3

R5 Rear Window Defogger SW W–B

A8 A/C SW G W–B 10 5 Engine Control Module<3–6>

2

G

G

G

G (*1)

10 A

TAIL Relay G–W (*1) 3 3 C12 Combination SW G (*2) 3 G (*1) 5 3 Taillight System <6–1> 1 2 3

G–W (*1)

P ow e r S ou rc e

1

E

T

Head

13

8 COROLLA

Light Control SW

2004 COROLLA (EWD533U)

15A TAIL

OFF

Tail

5 B

G W–B

W–B

R 3(A), R 4(B) Radio and Player

G

W–B

G

W–B

W–B

G

W–B

G

W–B

G

W–B

G

9 COROLLA

(Cont. next page)

P ow e r S o urc e 1 2

Inte rio r L igh t 3
* * * * 1 : w/ Moon Roof 2 : w/o Moon Roof 5 : w/ Automatic Glare–Resistant EC Mirror 7 : w/ TVIP System

4

ACC 1 AM1 IG1 2 B–Y 2 IF I10 Ignition SW 1 IG1 Relay

1 IA 5 10A GAUGE

W

12 IF

W 25A AM1

2 25A DOOR 1 +B GND 9

3

10 IG

I11(A) Integration Relay

DCTY 5

PRCTY 6 A

2004 COROLLA (EWD533U)

1 IB

B C

1 1D

W 2 100A ALT 1 1 1A B FL MAIN 2. 0L Battery

1 1C R–W L–W L–W L–W R

W 7 IC 4 IF 10 IH 1 IE 1 ID 3 IL 4 IK 4 IL 6 IE 4 IE 4 ID 1 2 15A DOME B (*1 *5) 1 L3 Luggage Compartment Light L–W B (*2 *5) W–B (*1) R–W R–W (*7) 17 W–B W–B R–W R (*7) 20 19 4C C9 Combination Meter L–W R–Y D R 20 4C 1 2 I13 Interior Light 2 R–W 1 D4 Door Courtesy SW Front LH TVIP ECU <16–4> 1 L–W A A A R–W R–W (*7) J10 Junction Connector TVIP ECU <16–4> Door 5 1 L4 Luggage Compartment Light SW L–W A J6 Junction Connector Behind the Combination Meter IE IG A J7 Junction Connector Right Kick Panel W–B(*1) B(*2 *5) E F

9 COROLLA (Cont’ d)

In terior L ig ht 5 6 7
* * * * * * * 1 : w/ Moon Roof 2 : w/o Moon Roof 3 : w/o Door Lock Control 4 : w/ Door Lock Control 5 : w/ Automatic Glare–Resistant EC Mirror 6 : w/o Automatic Glare–Resistant EC Mirror 7 : w/ TVIP System

8

I11(A) Integration Relay

LP2 12 A

LP 3 A

PCTY 13 A

2004 COROLLA (EWD533U)

A B C B (*2 *6) R–W (*4) R–W (*4)

3 IE

14 ID

15 ID

3 IK

3 IG R–B

B (*2, *1 *5)

3 IK1 7 R7 Rheostat R–W (*7)

B (*1 *6)

R–W (*3)

D

B (*1 *5)

10 4B Door

1 R–B R–Y 1 M2 Personal Light I12 Personal Light (*6) (*6) (*5) (*5) (*6) (*6) (*5) (*5)

On Off B (*2 *6)

9 4B

7 4B

4

3

TVIP ECU <16–3>

R–W (*3)

W–B

R–W (*3)

R–W (*4)

3 6 1 D6 Door Courtesy SW Rear LH 1 D7 Door Courtesy SW Rear RH 1 D5 Door Courtesy SW Front RH

R–W (*4) 19 4B 21 4B W–B A J6 Junction Connector IE Behind the Combination Meter

B (*1 *5)

B (*2 *5)

B (*2 *6)

W–B (*1)

E F

W–B(*1) B(*2 *5)

10 COROLLA

(Cont. next page)

P o w e r S o ur ce 1 2

E le c tron ic a lly C on trolled T ran sm iss ion 3
B–W ACC 1 AM1 IG1 2 B–Y W Engine Control System <3–6><3–7><3–8><3–10> 22 3B 5 AM2 IG2 6 ST2 B–W R–W R–W B–W 10 EA1 Cruise Control ECU <11–3> R–W 20 3B

* 1 : w/ Cruise Control

4

R–W

A

B–W

B–W

12 IC

5 IL

8 IK B–O B

12 IF

W 25A AM1

6 IM

B 15A AM2

I10 Ignition SW

2 IF 1

1 IA 5

2 IG

3 EA1

1 IA2

IG1 Relay

10A GAUGE

2

3

2004 COROLLA (EWD533U)

R–W

B–W

R–Y (*1)

1 IB

3 IM B–R 2 IA4 R–W R–W 4 IF W–B 10 IH W–B

3 D BATT

28 A E2

19 A THW

21 A VTA

18 A VC

17 C SPD

19 C STP

18 C OD1

E 3(A), E 4(B), E 5(C), E 6(D) Engine Control Module R–W +B 1 D SLT+ 17 A SLT– 16 A S1 15 B SL 13 B S2 14 B

1 1D

W 2 100A ALT 1 1 1A B FL MAIN 2. 0L Battery

1 1C

W 1 2 1

B–R 1 2 30A MAIN 1 15A EFI

1 5 1

1 L

R–W

L–W

R–Y

B

P

EFI Relay

3 4B L

3 1

2 1 1 4B 1 SLT+ W–B B B GR W G Y 4 SLT– 3 S1 2 SL 6 S2

D A

D A J 2(A), J 3(B) Junction Connector

B B

B

L (*1)

9 EA1

6 II1 B

Cruise Control ECU<11–3>

W–B A J6 Junction Connector Front Left Suspension Tower E1 Electronically Controlled Transmission Solenoid W–B Behind the Combination Meter IE ED

W–B

C

10 COROLLA (Cont’ d)

E le ctro nic ally C o ntro lle d T ra ns m is s io n
A R–W

B a ck – U p L ig ht 7
R–W

5

6

8

14 II2 R–W B J4 Junction Connector B R–W (A/T) 3 A2 A/T Shift Lever Position SW Back–Up Light SW RB R–W (M/T)

B

B–O

2 B1 Back–Up Light SW

LL 8

2L 4 LG–B

RL 2

1 R–B (M/T)

2004 COROLLA (EWD533U)
C W–B Right Kick Panel

8 C L

E 3(A), E 4(B), E 5(C), E 6(D) Engine Control Module ODMS 29 C EC 28 B E03 5 B E01 7 A E02 6 A E1 7 B R 11 C ODLP 7 C

LG–B 2

9 C

LG

R–B (A/T)

R–B

LG

C 13 II2 C C

2 II1 LG–B

5 II1

J10 Junction Connector

LG R–B 1 R12 Rear Combination Light RH Back–Up R–B 1 R10 Rear Combination Light LH Back–Up R–B

LG–B 2 A10 O/D Main SW W–B W–B A A A IG 4 17 3A 11 3A

10 II2

J7 Junction Connector

W–B W–B

EC

W–B C A W–B W–B Left Side of the Cylinder Head W–B

C A

B B

W–B J 4(A), J 5(B) Junction Connector W–B

W–B

R–B

B–O

R–B

A A

A A

EB

BR J 4(A) Junction Connector BR

LG 32 O/D OFF 3

9 IK

6 ID

C9 Combination Meter

10 IK

2 W–B

2 W–B

R–B

LG W–B

A B

A B

J 8(A), J 9(B) Junction Connector

A A W–B

Left side of the Cylinder Head

Lower Back Panel

BI

Under the Left Quarter Pillar

BH

11 COROLLA

P ow er S ou rc e 1
W

C ruis e C o ntro l
* 1 : A/T

2

3

4

ACC W 1 AM1 IG1 2 B–Y 2 IF 1 1 IA Engine Control Module<10–4> Engine Control Module<10–4> Engine Control Module<3–7> Stop Light SW <7–2> 5 IG1 Relay 10A GAUGE 10A ECU–IG Data Link Connector 3 <3–11> Combination Meter <24–3>

5 AM2

IG2 6 ST2 2 B–W 3

12 IF

W 25A AM1

6 IM

B I10 Ignition SW 15A AM2

5 3B 5 IL 10 IH 4 IF 2 IG 9 IF L–W R–Y (*1) 6 3B B–W B–W

3 II1

L (*1) G–W V–W P–B L (*1)

5 IA5 2 R–W (M/T) R–W (M/T) R–W W–B W–B

13 IDL

14 OD

6 ECT

3 STP–

10 TC

12 SPD

+B

2004 COROLLA (EWD533U)

1 IB

3 iM B–R

8 IK

22 3B

19 3B

1 C13 Cruise Control Clutch SW

D 4

PI 5 C14 Cruise Control ECU

CCS 11

MC 7 R–L

MO 15 R–G 8

L

GND 16 G–O

B–O 2 20 3B 32 C9 Combination Meter R–W (A/T) L (M/T)

1 1D

W 2 1

1 1C

1 1A

W 100A ALT B FL MAIN 2. 0L Battery

2 IA4 B–R 1 2 30A MAIN 1

G–R

G–Y

12 IA5

4 IA5

13 IA5 G–O

L

14 IA5 2 R–G R–L

3

14 II2 CRUISE 23 G–R D 7 W–B A J7 Junction Connector IG Right Kick Panel R–W (A/T) B J4 Junction Connector

CRUISE

CCS

S9 Stop Light SW 4 R–Y

17 3C

L (M/T) 19 3C

RES/ ACC SET/ COAST

2 MC

1 MO

3

L

B R–W (A/T) 3

20 3C L (A/T)

W–B

M CANCEL ECC GND C4 Cruise Control Actuator 4 13 4B 3 IA5 W–B

A2 A/T Shift Lever Position SW L (A/T)

14 4B

4 II1

3 W–B

C10 Combination SW

12 4B W–B

21 4B W–B

W–B

A W–B A J6 Junction Connector IE

Behind the Combination Meter

12 COROLLA

P ow er S ou rc e 1 2 3

ABS 4

ACC W 1 AM1 IG1 2 B–W B–W B–Y 2 IF

B

5 AM2

IG2 6 ST2

1 IA

W

5 IL Daytime Running Light Relay<4–4>

1 12 IF 6 IM I10 Ignition SW 25A AM1 15A AM2 2

5 IG1 Relay 3

Data Link Connector 3 <3–10><3–11><3–12>

10A ECU–IG

10A GAUGE

2004 COROLLA (EWD533U)

Combination Meter <24–3>

1 IB

3 IM

Stop Light SW <7–2>

R–W

B–R

W

W

R

L 1 2 2 40A ABS NO. 2 1 1 1 2 100A ALT 1 1 1A B FL MAIN 2. 0L Battery

P–B

L–R

GR

1 1D 30A ABS NO. 1

1 1C 2 IA4

4 IF

2 IG

8 IK

13 IC

11 IA6

12 IA6

4 IA6

15 IA5

G–W

W–G

R–W

B–W

R–W

B–O

P–B

L–R

GR

R

L

B–R 1 2 30A MAIN W–B 1 Combination Meter System<24–7> 21 4B 18 4B 35 W–B W–B 2 A A J6 Junction Connector IE Behind the Combination Meter

22 3B

3 IG1

2 +BS

24 +BM

10 TS

8 TC

11 D/G

12 PKB

16 STP

17 SP1

16 3B

BRL 19

WA 30 W–R

GND2 23 W–B

GND1 1 W–B

FL+ 13 R

S1 Skid Control ECU with Actuator FL– FR+ FR– 26 G 27 B 28 W

RL+ 7 B

RL– 6 Y

RR+ 5 R

RR– 4 W

R–W 4 32 Brake ABS 37 36

B–O C9 Combination Meter R W–R

16 IA5

R R

1 IB1

2 IB1

3 IB1

4 IB1

W

R

B

Y

5 IA6 1 BC1 2 BC1 W 1 BD1 2 BD1 W

B

B

2 A3 ABS Speed Sensor Front LH A4 ABS Speed Sensor Front RH W–R W–B EA

2 A19 ABS Speed Sensor Rear LH

2 A20 ABS Speed Sensor Rear RH

2

1

1

1

1

Front Right Fender

13 COROLLA

(Cont. next page)

P o w er S o u rce 1 2

SRS 3

* 1 : w/ Side Airbag

4
B–W A

5 AM2

IG2 6 ST2

B–W S6 Side Airbag Squib LH S7 Side Airbag Squib RH

A5 Airbag Sensor Front LH S10 Side Airbag Sensor LH S11 Side Airbag Sensor RH

A6 Airbag Sensor Front RH

6 IM 1 15A AM2 2 1 2

3 IM B–R

B I10 Ignition SW B Combination Meter<19–3>

ESL 1

SSL– 2

FSL 3

VUPL 4

ESR 1

SSR– 2

FSR 3

VUPR 4

+SL 2 W–R 1

–SL

+SR 2 B–W 1

–SR

BR–W

BR

GR–L (*1)

LG–B (*1)

Y–G (*1)

Y–G (*1)

L–W (*1)

Y–R (*1)

Y–R (*1)

P–L (*1)

L–Y (*1)

LG (*1)

P (*1)

GR (*1)

3 IA1

4 IA1

1 IA1

2 IA1

BR–W

W–R

B–W

BR

2004 COROLLA (EWD533U)

8 C 2 IA4 L–W RBE+

6 A SFL+

5 A SFL–

1 C SFR+

2 C SFR–

12 A ESL

9 A 10 A SSL– FSL

7 A VUPL

7 C ESR

10 C SSR–

9 C 12 C FSR VUPR

15 B +SL

26 B –SL

9 B +SR

20 B –SR

A12(A), A13(B), A14(C) Airbag Sensor Assembly LSP+ LSP– 4 A R–B LBE+ 11 A G D+ 14 B D– 13 B D2+ 16 B D2– 17 B P+ 10 B P– 11 B P2+ 8 B P2– 7 B PL+ 2 A PL– 1 A PR+ 5 C PR– 6 C

B–R 3 IG1 B 1 2 L–W B B 30A MAIN 1 1 1A 3 2 Occupant Detection Sensor B7 Buckle SW RH Occupant Detection Sensor 1 W–B 4 B Buckle SW B FL MAIN 2. 0L Battery 4 IG1 W–B 14 3A

3 A G–W 4

5

2 B6 Buckle SW LH Seat Position Sensor

Y–GR

Y–O

Y–R

Y–G

Y–B

Y–V

Y–P

Y–B

Y–B

Y

Y

Y

VS

GND Buckle SW

Seat Position Sensor

1 D+

2 D–

4 D2+

3 D2–

1 P+

2 P–

3 P2+

4 P2–

1

2

1

2

1 W–B 2 IG1 W–B 15 3A 11 3A W–B J7 Junction Connector Right Kick Panel A IG

3 G–Y 1 IG1 G–Y Combination Meter<19–3>

A16 Airbag Squib (Steering Wheel Pad)

A15 Airbag Squib (Front Passenger Airbag Assembly)

P12 Pretensioner Front LH

P13 Pretensioner Front RH

13 COROLLA (Cont’ d)

SRS 5
A B–W

6

7

8

5 IL

B–W

8

II

8 IK B–O

B–O

2004 COROLLA (EWD533U)

5 B IG2 A12(A), A13(B), A14(C) Airbag Sensor Assembly E2 28 B W–B 10 II 3 II 10 IH W–B J7 Junction Connector A W–B A IG E1 27 B W–B 7 II 4 IF Right Kick Panel W–B GSW2 23 B Y 1 II 6 IJ Y Engine Control Module<3–7> TC 19 B P–B 2 II 4 IJ P–B SIL 12 B L–R 5 II 39 2 5 IJ L–R LA 3 B B–Y 1 IJ B–Y 15 4C 13 4C B–Y 14 4C 18 4B 21 4B B–Y W–B Data Link Connector 3 <3–11><3–12> A J6 Junction Connector Behind the Combination Meter IE SRS 32 C9 Combination Meter W–B

14 COROLLA
A u to m atic G lare – R es ista n t E C M irro r w ith C o mp a ss 3
* 1 : w/ Moon Roof * 2 : w/o Moon Roof W W I10 Ignition SW 12 IF B–L Wiper SW B–Y W 25A AM1 1 IB 2 IF 1 IA 5 IE Washer SW 1 5 IG1 Relay 10A GAUGE MIST OFF INT LO HI Off B–L On +B +2 +1 +S B1 INT1 INT2 EW

P ow er S ou rc e 1
ACC 1 AM1 IG1 2

W ip er an d W as he r 2

4

Wiper Relay 7 4 15A WASHER L–Y 8 L 9 L–R 7 L–W 6 L–W C11 Combination SW 5 W–B 6 I12 Inner Mirror

2004 COROLLA (EWD533U)

2 W 1 1D 2 100A ALT 1 1 1A B FL MAIN 2. 0L Battery IE W 25A WIPER 1 1C

3

9 IA2 F5 Front Washer Motor L–Y

8 IA2

7 IA2

6 IA2

B (*1)

4 IF

11 IC

7 IL

9 IC

1

B (*2)

M 2 L L L

W–B (*1)

L 2 B W–B 4 +2

L–W

L–W

L–R

1 +1

3 S

1 IE

10 IH

M W–B A W–B

A

J6 Junction Connector Behind the Combination Meter EA

A W–B 5 E F6 Front Wiper Motor

J6 Junction Connector Right Kick Panel

J7 Junction Connector

Front Right Fender

Behind the Combination Meter

IE

IG

15 COROLLA

(Cont. next page)
* 1 : w/ Power Window * 2 : w/o Power Window * 3 : w/ TVIP System

P ow e r S o urc e 1 2

D oo r L o ck C o ntro l 3

4
L–Y A

B–Y ACC 1 AM1 IG1 2 2 IF 1 IA W IG 10 +B 1 GND 9 L1 9 A UL1 8 A

I11(A) Integration Relay HAZ 25 A UL3 6 A LSWD 19 A ACTD 1 A

I10 Ignition SW

1 IG1 Relay

5 10A GAUGE

L–W

Y–B

13 ID

L–Y

L–Y

12 IF

W 25A AM1

W

R

L

G

B

22 4A

19 4A L–Y

2 25A DOOR

3

W

G

Turn Signal Flasher Relay<5–4>

20 4A

17 4A

21 4A

18 4A

2004 COROLLA (EWD533U)

L

R

7 IC

1 IB

10 IH

4 IF

C

L–W

L–W

L

L G(*3)

L–Y(*3)

W(*3)

L–Y

W

G

W

W

L–W 1 2 15A DOME 2 1 1

5 IC1 1 1D 1 1C L–W (*1) 5 A (*2) 6 B Lock 100A ALT W–B W–B 1 1A B W–B FL MAIN 2. 0L 1 IJ2 W–B Battery A A J7 Junction Connector Right Kick Panel IG IE A

4 IC1

7 IJ2

12 IJ2

11 IC1

10 IC1

3 IC1

8 IC1

9 IC1

L–W

L–Y

W

G

R

L

8 A 5 B D10(B), D11(A) Door Lock Control SW Front LH Unlock W–B W–B W–B 6 Lock 5 D12 Door Lock Control SW Front RH Unlock

3 A (*1) 3 B (*2)

L W–B W–B A J6 Junction Connector

L 9 TVIP ECU <16–4> Lock

10

8

1

4

Detection

Unlock

M

3

7

D8 Door Key Lock and Unlock SW Front LH Door Lock Motor Front LH Door Unlock Detection SW Front LH W–B

W–B W–B

W–B

D

6 IC1

Behind the Combination Meter

15 COROLLA (Cont’ d)

D oo r L o c k C o n trol 5
A L–Y

W ire le ss D o or L oc k C on tro l 7 8

6

I11(A) Integration Relay L2 7 A UL2 5 A LSWP 18 A ACT– 3 ACT+ 2 TVSS 26 A HRLY 11 A HORN 10 A KSW 4 8 IJ TVIP ECU <16–4> 5 IK R 2 IK L 20 ID 9 ID G–Y (*3) L–B W (*3) R (*4) W–R L–B G RDA 7 8 ID PRG 8 10 ID

G

B

2 4A

3 4A

6 4A

10 4A G–Y L–R L–Y

W–R (*3)

L–B (*3)

TVIP ECU<16–4>

HORN Relay <21–4>

Unlock Warning SW <19–4>

Daytime Running Light Relay<4–3>

1 4A

2004 COROLLA (EWD533U)

8 4A 4 4A L R

9 4A

5 4A

7 4A

W–R

L–B

G

C

L

R

R

L

L

L

2 RDA 8 IJ2 9 IJ2 8 BB1 3 BB1 8 BA1 3 BA1 GND 1

3 PRG

5 +B

W–R

L–B

11 IJ2

G G 6 5 Lock 8 W–B

10 IJ2

3 IJ2

7

1

4

1

4

1

4 W–B

D3 Door Control Receiver

W–R

L–B Unlock

R

R

R

L

L

L

D9 Door Key Lock and Unlock SW Front RH Door Lock Motor Front RH Door Unlock Detection SW Front RH

Detection

M

M

M

D14 Door Lock Motor Rear RH

D13 Door Lock Motor Rear LH

A B J 8(A), J 9(B) Junction Connector A A

D * 3 : w/ TVIP System * 4 : w/ Wireless Door Lock

W–B Under the Left Quarter Pillar BH

16 COROLLA

P ow e r S o urc e 1 2
R–B R–B

T V IP S y s tem 3 4

R–B

ACC W 1 AM1 IG1 2 B–Y W

Daytime Running Light Relay <4–3>

Turn Signal Flasher Relay <5–4>

Starter Cut Relay <1–1>

2 IF I10 Ignition SW R–B 1 IH 10A ECU–B 1 W 12 IF 25A AM1

1 IA 5 IG1 Relay 10A ECU–IG

HORN Relay <21–4>

Integration Relay <9–8><15–3><15–5><15–7>

2

3

R–W

W–R

B–R

G–Y

Y–B

L–B

L–Y

W

W

4 IF

10 IH

9 IF B–W R–B B–W

R

2004 COROLLA (EWD533U)

1 IB

B–W

10 IG

2 +B1

5 HORN

6 HEAD

8 HAZD

21 SRLY

9 DMLP

28 IRSG

18 UL2

38 LSWP

37 LSWD

17 UL3

1 1D

W 2 1

1 1C

1 1A W

W 100A ALT B FL MAIN 2. 0L Battery A

IOUT 11 B–W 29

E

IND 25 T3 TVIP ECU R–W

KSW 12

L2 16

CTY 19

DSWD 40 R–W

DSWL 35 R–W

IE

W–B W–B

J6 Junction Connector Behind the Combination Meter

W–B R–B 8 TRIG 1 S+B G3 Glass Breakage Sensor ECU

W–B

L–B

W–B

G

R

L 3 IOUT 6 MIC 4 5 3 4 Microphone

11 ID2

GND

GMIC

S4 Security Indicator W–B

W–B Unlock Warning SW <19–4> Door Key Lock SW Front LH <15–3> Door Courtesy SW <9–3> W–B (Shielded) 1 Security R–W W–B 2 19 3A 11 3A W–B A A J7 Junction Connector IG Right Kick Panel

R–W Luggage Compartment Light SW<9–4>

17 COROLLA

P o w e r S o urc e 1
W W ACC W 1 AM1 IG1 2 25A AM1

P ow er W in do w 2 3 4

B

B

12 IF

1 IB 6 B

7 B Front LH Front RH

D11 Power Window Master SW Rear LH Rear RH

I10 Ignition SW

B–Y Lock Window Lock SW Down 1 IA 5 2 IF 30A POWER 1 1 B B Normal

IG1 Relay 3 2

1 IC1 2

2 IC3

2004 COROLLA (EWD533U)
100A ALT

10A GAUGE 1 W 2 10 IH 4 IF 18 ID 7 IG 1 1 1A B FL MAIN 2. 0L W–B Battery J7 Junction Connector A W 2 3 IG W–B Right Kick Panel W–B 5 P/W Relay

B

B E 1 W–B 3 W–B E 4 Y DU 9 G DD 18 G–R 1 IC3 PU 15 L–W 7 IC3 PD 12 R–G 6 IC3 RLU 13 L–B 5 IC3 RLD 10 R–B 4 IC3 RRU 16 L–R 3 IC3 RRD

1 1C 1 1D 6 4B 9 4B W–B G–R L–W R–G L–B 7 4B B B

R–B

L–R

B B B 10 4B 8 4B

3 ID1

4 ID1

R–G

G–R

L–W

L–B

B

B 6 IJ2

B

B

4 IJ2 G–R

5 IJ2 L–W

2 BA1

4 BA1 R–B

5 BA1 L–R

2 BB1

4 BB1 R–B

5 BB1 L–R

6 IC1 4 B P5 Power Window Control SW Front RH G Y

W–B W–B A W–B A J6 Junction Connector IE 4 M 5 Behind the Combination Meter P8 Power Window Motor Front LH

B

B 5 Up U 3 Y

B

2 SD

5 4 B Down P6 Power Window Control SW Rear LH

2 SD

5 4 B Down P7 Power Window Control SW Rear RH

2 SD

SU

SU

SU

Down

Up

Up

D 1

U 3 Y

D 1

U 3 Y

D 1

G

G

G

4

M

5

5

M

4

5

M

4

P9 Power Window Motor Front RH

P10 Power Window Motor Rear LH

P11 Power Window Motor Rear RH

18 COROLLA

P ow er S ou rc e 1 2

M oo n R o of 3

S hift L o ck 4

ACC 1 AM1 IG1 2

M2 Moon Roof Control Relay and SW

B–W

B–Y

12 IF

W I10 Ignition SW 1 25A AM1 IG1 Relay 2

W

2 IF

1 IA

9 IF Open B–W Close Up 5 3B Down Stop Light SW <7–2> 30A POWER 10A GAUGE

5 10A ECU–IG

1

3

2

2004 COROLLA (EWD533U)

5

1 7 3B P/W Relay

1 IB 3 W 1 1D 2 W–B W–B 100A ALT 1 1 1A B FL MAIN 2. 0L Battery J6 Junction Connector W–B W–B W 1 1C 2

G–W

B–W

IG 2 4 IF 10 IH 1 IE W–B 2 IE

LS1 6 G–W

LS2 7

MTR+ 4 5

MTR– GND 8 W–B

R–L

B

1 E W–B

5 IG

3 STP

G

R

5

6

1

2

16 3A

LS1 4 W–B

LS2 M 3 W–B M3 Moon Roof Motor and Limit SW

11 3A

SLS+

SLS–

W–B

W–B

W–B S5 Shift Lock Control ECU J7 Junction Connector W–B

Shift Lock Solenoid

A

A

J7 Junction Connector Right Kick Panel Right Kick Panel

A

Behind the Combination Meter

IE

IG

IG

19 COROLLA
Ligh t R e mind e r B uz z e r 3
G–W (*5) 13 C12 Combination SW L–W 19 4C G–W (*4) G–W (*5) W 1 AM1 ACC IG1 2 B–Y W 20 4C 2 IF W I10 Ignition SW 1 1 IA R–W L–W 5 10A GAUGE IG1 Relay 4 4 IL 15A TAIL 25A AM1 10 IH 7 IC 1 IB R–W R–W W–B W–B 4 IF 2 IG L–W 7 IH 12 IF 5 2 3 E Light Control SW OFF Tail Head 10 G (*5) Taillight System <6–1> G (*4) C9 Combination Meter T TAIL Relay 2 3 5 3 G–W (*4) 3 1 3 G–W (*4) 3 * * * * * 1 : w/ Door Lock Control 2 : w/o Door Lock Control 3 : w/ TVIP System 4 : USA 5 : Canada

P ow er S ou rc e 1

S e a t B elt W a rn in g 2

K e y R e m in de r B u zz e r 4

G 18

2004 COROLLA (EWD533U)

Buzzer

Seat Belt

TVIP ECU<16–4>

L–W 1 2 1

Integration Relay <15–8>

1 1D

15A DOME 1

W 2

1 1C

1 1A

W 100A ALT B FL MAIN 2. 0L W–B A J7 Junction Connector IG Right Kick Panel Battery

22 3B

16 3B

11 3B 6 R–W 1 F7 Front Passenger Seat Belt Warning Light PASSENGER 3 L C 21 4B 1 W–B W–B BR Left Side of the Cylinder Head EB 11 L–W 17 12 G–Y 1 2 W–B 16

L–B (*2)

L–B (*1)

L–B (*1)

BR

L

14 4A 5 Buckle SW RH <13–1> Interior Light System<9–3> Buckle SW LH <13–2> II2 15 4A BR C J3 Junction Connector 18 4B 2 L–B (*1) A W–B A A J6 Junction Connector IE Behind the Combination Meter L–B (*1)

16 4A L–B (*3)

U1 Unlock Warning SW

20 COROLLA

P ow e r S o urc e 1 2

R e m ote C on trol M irro r 3 4

ACC 3 1 AM1 IG1

L–R

GR

6 IF I10 Ignition SW 15A CIG 12 IF 8 IF 25A AM1 GR

8 3A

8 B

R6 Remote Control Mirror SW

W

Left

Right

Up

Down

Left/ Up

Right/ Down

Operation SW

10 3A

Left

Right

Left

Right

Select SW

2004 COROLLA (EWD533U)

1 IB HL 5 W L 1 1C 2 LG R 100A ALT 10 IC2 8 IC2 10 IJ1 8 IJ1 1 1 1A L 1 B FL MAIN 2. 0L Battery BR–W BR–W A BR–W MH 3 R17 Remote Control Mirror LH MV M 2 M LG 1 MH M+ 2 R HR 4 LG R–W R–W M R 3 R18 Remote Control Mirror RH MV 2 M M+ VL 3 VR 6 BR–W 16 3C 14 3C 15 3C 9 IJ1 BR–W BR–W 9 IC2 BR–W BR–W M+ E 7 W–B 22 4B 21 4B IE W–B J6 Junction Connector Behind the Combination Meter

21 COROLLA

P o w er S ou rc e 1

C iga rette L igh ter 2

C loc k 3

P o w e r O utle t

H orn 4

ACC 3 1 AM1 L–W 4 IL 7 IC L W I10 Ignition SW IG1

L–R GR L

* * * * * L–W 20 4C 6 IF 2 16 4C P–POINT Relay L–W 1 3 8 IF 4 1 C7 Clock GR GR 3 10 3A 6 3A 5 3A W–B G 2 W–B L–Y 5 3 15A CIG 3 3 3

1 : w/ Wireless Door Lock 2 : w/o Wireless Door Lock 3 : TVIP System 4 : w/ Cigarette Lighter 5 : w/o Cigarette Lighter B–W

B–W

1 1 5

1

6 IH

12 IF

HORN Relay 2 1 3 1

15A P/POINT

25A AM1

GR

2004 COROLLA (EWD533U)

1 IB

G–Y

B–W 1 1 2 10A HORN 2 1 1

L–W 2 15A DOME 1

1 1C

1 1A

W 9 3A 100A ALT B FL MAIN 2. 0L Battery W–B (*4) A J6 Junction Connector Behind the Combination Meter IE GR (*5) C5 Cigarette Lighter GR (*4) 2 1

Integration Relay<15–7>

18 IA5 B 1

1 IF1

H6 Horn

G–Y (*1)

G–Y (*1)

L–Y

GR (*5)

12 3A

11 4A

13 4A

TAIL Relay(USA) Combination SW(Canada) <8–4>

2 C5 Power Outlet (Front) 1 W–B W–B (*5)

2 P4 Power Outlet (Rear) 1 G–Y (*1) G–Y (*1) W–B

G–Y (*2)

18 3A

11 3A

12 4A

1 C10 Combination SW Horn

G–Y (*3)

2 IF1

TVIP ECU<16–3>

W–B

W–B A J7 Junction Connector Right Kick Panel IG A A

J6 Junction Connector IE Behind the Combination Meter

22 COROLLA

P ow e r S o urc e 1 2

R ea r W ind ow D efo gg e r 3
Engine Control Module<3–6>

4

ACC 1 AM1 IG1 2

B–Y

12 IF

W 25A AM1

W

I10 Ignition SW

B W 8 ID1

2 IF

1 IA

8 IL

4 IM

10A M–HTR/DEF I–UP

1

5 1 IG1 Relay Noise Filter 2

1 40A DEFOG 2 2 10A GAUGE DEF Relay 5

B

2004 COROLLA (EWD533U)

2 1 IB

3

1 1D 2

W 100A ALT 1 1 1A B FL MAIN 2. 0L Battery

1 1C

W 4 IF 10 IH 2 IG 22 3B 14 3B W–B J6 Junction Connector A A Behind the Combination Meter IE W–B J7 Junction Connector Right Kick Panel IG R–W

1 10 IL

3 B B

B 4 D R5 Rear Window Defogger SW E 2 1 A R15(A), R16(B) Rear Window Defogger N2 Noise Filter (Rear Window Defogger) 1 IG 5 R–W 1 B IE W–B Behind the Combination Meter BJ B Under the Right Quarter Pillar

23 COROLLA

P ow e r S o urc e 1 2

R a dio an d P lay er 3 4
* 1 : w/ Tweeter * 2 : w/o Tweeter ACC 3 L–R

1 AM1

IG1 6 IF

AM2 W

IG2 15A CIG ST2

4 IL

L–W

A17 Antenna Amplifier

12 IF

I10 Ignition SW 8 IF

Illumination System<8–2>

L–W

25A AM1

GR

1

2004 COROLLA (EWD533U)

10 3A

20 4C

7 IC

1 IB 7 3A 17 4C L–W B

L–W 1 2 15A DOME 2 1 1

GR

1 1C

1 1A V (*1) L (*1) P (*1) LG (*1)

W 100A ALT B FL MAIN 2. 0L Battery Behind the Combination Meter

3 A ACC

8 A ANT+

10 A ILL+

5 B ILL–

4 A +B

R 3(A), R 4(B) Radio and Player

GND 7 A

FL+ 2 A

FL– 6 A

FR+ 1 A

FR– 5 A

RL+ 2 B

RL– 6 B

RR+ 1 B

RR– 3 B

LG

W

R

4 IC2

1 BE1 BR IF F8 Front Door Speaker LH P (*2) P (*1) LG (*1)

P 1 2 T4 Tweeter LH 1 2

3 IC2

2 BE1 V (*2) L (*1) V (*1) LG (*2) LG (*1)

V

B

Y

L

4 IJ1

3 IJ1

2 ID1

6 ID1

1 ID1

5 ID1

W

B 1 L (*1) L (*2) 2

Y

R 1 2

1 BF1 LG (*1)

2 BF1 L (*1)

1

2

R13 Rear Door Speaker LH

R14 Rear Door Speaker RH

T5 Tweeter RH 1 2

F9 Front Door Speaker RH

(Cont. next page)

A

5 ID2

Y 7 2 3

Y

Fuel Buzzer BR ODO/TRIP 5 II2 1 Left Side of the Cylinder Head 1 3 2 V1 Vehicle Speed Sensor (Combination Meter) 2 IG W–B IG1 Relay 1 IA W I10 Ignition SW B–Y 5 3 10A GAUGE 4 IF Battery 2 15A DOME 1 1A 7 IC 4 IL L–W L–W 1 2 1 B 1 FL MAIN 2. 0L Behind the Combination Meter 30A MAIN 2 IA4 3 IM B–R B–R 1 2 W 25A AM1 12 IF 1 IB W W 1 1 1D 100A ALT 1 1C J6 Junction Connector A IE 2 IF 1 2 W–B A EB BR BR

8 IK

4

13 ID2

BR 22

BR

J 2(A), J 3(B) Junction Connector C B 11

Seat Belt Warning System<19–3>

C A

R–W B–W 4 12

Out Side Temp. ODO/TRIP

C B

5 IL

BR (w/o ABS)

C om b in ation M e ter

Key Reminder Buzzer Light Reminder Buzzer <19–4> B Engine Control Module<3–10> W–G (w/ ABS) 14 IA6 W–G (w/ ABS) Skid Control ECU with Actuator <12–4>

3

9

19

16

W–G

C9 Combination Meter

W–G (w/o ABS)

Temp. 4

W–G (w/o ABS)

II2

Fuel 8 4C 9 4C V–W 10 Engine Control Module<3–10> V–W

Tachometer Y–R Engine Control Module<3–7> Key Reminder Buzzer Light Reminder Buzzer<19–3> Interior Light System<9–3> BR (w/o ABS) W–G (w/o ABS) J 4(A), J 5(B) Junction Connector 16 3B 20 3B 14 II2 B A C B R–W B–Y B–W 22 3B R–W R–W (w/o ABS) R–W (w/o ABS) R–W (w/o ABS) 8

Speedometer L–W 20 4C 19 4C 5 L–W Door 20

2

14

High Beam

ACC

IG2 6

IG1 2

P o w er S o u rce

5 AM2

1 AM1

ST2

15A AM2 6 IM B

24 COROLLA

1

2004 COROLLA (EWD533U)

13

Headlight System<4–7>

17

Headlight System <4–7>

7 4C

V–W Cruise Control ECU<11–4>

W–B

B–O

F10 Fuel Sender

B

21

II2

W 3 Oil Pressure O1 Oil Pressure SW 1

W

18

Illumination System<8–4> Illumination B

B

J1 Junction Connector

SRS System <13–6>

R–W (w/o ABS)

SRS 17 IA5 35 1 2 ED EA 1 B–L 10 IA6 30 A7 Ambient Temp. Sensor 3 IA6 B 26 B 1 2 21 4B 18 4B W–B 2 2 B W–B Front Right Fender W–B (Canada) W1 Washer Level Sensor 13 IA6 Front Right Fender EA Front Left Suspension Tower W–B (w/o ABS) ABS System <12–2> R–W B2 Brake Fluid Level Warning SW R–W (w/ ABS) W–B

7

Brake (w/ ABS) R 16 IA5 36 W–B (w/o ABS) ABS System <12–2>

C o m bina tio n M ete r

ABS 5 IA6 W–R C9 Combination Meter 37 W–B (w/o ABS)

(w/ ABS)

CRUISE Electronically Controlled Transmission System<10–6> Engine Control System <3–3>

O/D OFF

6

Malfunction Indicator Lamp L–W (Canada)

33

3

23

Cruise Control System <11–1>

Washer Level

B–O 32 Charge 31

34

L–W (Canada)

Charging System <2–2>

Turn Signal and Hazard Warning Light System<5–3> Turn RH 24 Turn LH

25

Seat Belt Warning System<19–3> 6

W–B

24 COROLLA (Cont’ d)

Seat Belt

5

B–L

A

B–O

2004 COROLLA (EWD533U)

R–W (w/o ABS)

39

B

R–W (w/o ABS)

15 IA5

28

Illumination System<8–4>

R–W (w/o ABS)

Daytime Running Light Relay <4–4>

8

25 COROLLA

P ow e r S ou rc e 1 2 3

R ad ia tor F a n 4

ACC 1 AM1 IG1 2 B–W 1 I10 Ignition SW B–W B–Y W 12 IF 3 1 25A AM1 2 1 5 1 FAN NO. 1 Relay FAN NO. 2 Relay 2 1 5 1 1 1 1 1 3 4 1 B–W B–W W–R

2 IF

13 IC B–R LG LG–B LG–B

2004 COROLLA (EWD533U)

1 IB 10A ECU–IG B–W 1 2 1 3 IG1 Relay 30A RDI FAN 1 1 1D 2 4 IF 100A ALT W 1 IA 1 W 1 1C 2 5 1 1A W–B B FL MAIN 2. 0L 2 Battery A IE

7 IA5

6 IA5 LG–B W–B L–W

LG–B

LG 7 E6 Engine Control Module 6 B–R M J6 Junction Connector Behind the Combination Meter 1 W–R R1 Radiator Fan Motor

3 P2 Pressure SW W–B W–B Single 2

2 R2 Radiator Fan Resistor W–B

1

FAN CF

LG W–B Front Right Fender EA ED W–B Front Left Suspension Tower

26 COROLLA

P o w e r S o urc e 1 2

A ir C on ditio ning 3 4
L–W L–W ACC

1 AM1

IG1 2

B–Y W

A8 A/C SW Air Inlet Control SW Defroster Mode Detection SW FRS FRS REC REC GND +IG Off On A/C SW Air Inlet Control SW

FACE Defroster Mode Detection SW B/L FOOT F/D DEF 2 B B 5

1 1

1

L–W

B

2 IF I10 Ignition SW W 12 IF 2 25A AM1 3

1 IA

3 IC

7 IF

M/G CLT Relay

1

5 IG1 Relay

3 1 B–W

2 1 Y–B

1 40A HEATER 10A GAUGE 10A A/C 9 2 R–W G–W W–B L–W 1 IB 4 IF 2 IG R–W 2 IM B–W 5 IM 1

IG 6

FRS 7

REC 8

GND

AIND 4

A/C 3

4 EA1 B–W

2004 COROLLA (EWD533U)

7 IA6

A1 A/C Magnetic Clutch

B

W

1 1D

W 2 100A ALT 1 1 1A B FL MAIN 2. 0L

R–W

G–W

Y

Y–B

1 1C

22 3B

18 3B B4 Blower Resistor 2 1 33 C ACLD REC PRS 13 A FRS Y 31 C A/CS THR 32 C B–L E 3(A), E 5(C) Engine Control Module

2 C ACMG E2 28 A

12 3B R–W W–B 3 2 HTR Relay 1 3 3 5 A Battery IE J6 Junction Connector

13 3B

B A11 Air Inlet Control Servo Motor 1 R–W 1 B–W 3 L–B 2 R 4 W–B

3

M 2

B3 Blower Motor B–W

BR

1 IH1

2 IH1

6 IH1

5 IH1 W–B

4

M

8 EA1

4 IH1 F

B–W L–W R 1 M2 2 M1 LO OFF B–W

Y

B

J3 Junction Connector

5 20 3A 1 R–W

3

3 B B L–W 6 5 W–B B5 Blower SW W–B A A W–B W–B 4 HI

F

A/C Thermistor

P2 Pressure SW

Dual

BR

11 3A 4 W–B W–B

3 IH1

B 1 II2

A A J7 Junction Connector

BR Front Right Fender EA

Behind the Combination Meter

Right Kick Panel

IG

27 COROLLA

P o w e r S o urc e 1 2

H ea ter 3
A8 Air Inlet Control SW B–Y W FRS FRS REC REC GND +IG Air Inlet Control SW

4

ACC 1 AM1 IG1 2

2 IF I10 Ignition SW W 12 IF 2 25A AM1 3

1 IA

1

5 IG1 Relay

1 40A HEATER 9 10A GAUGE

IG 6

FRS 7 G–W

REC 8

GND

R–W

W–B

L–W

2 1 IB 4 IF 2 IG R–W R–W 2 IM

2004 COROLLA (EWD533U)

W

1 1D

W 2 100A ALT 1 1 1A B FL MAIN 2. 0L

22 3B 1 1C

18 3B

B–W

W–B

B4 Blower Resistor A11 Air Inlet Control Servo Motor B

2

1

12 3B

13 3B

20 3A

REC

R–W

W–B 3 2 HTR Relay 1 3 A J6 Junction Connector IE

1 3 5 4 R–W M 2 B3 Blower Motor B–W B–W 3 3 3 4 B L–W 6 HI 1 M2 B–W

1 B–W 1 IH1 L–W R 2 M1 LO

3 L–B 2 IH1 OFF 5

2 R 6 IH1

4 W–B

FRS 11 3A M W–B

5 IH1 5 R–W

W–B B5 Blower SW W–B A A

W–B A

W–B A

W–B J7 Junction Connector

Battery

Behind the Combination Meter

IG

Right Kick Panel