Toyota Camry 2007-2009 Service Manual - 07EWD

FOREWORD

This wiring diagram manual has been prepared to provide
information on the electrical system of the 2007 CAMRY.

Applicable models: GSV40 Series

ACV40 Series

Refer to the following manuals for additional service
specifications and repair procedures for these models:

Manual Name

D 2007 CAMRY Repair Manual
D 2007 CAMRY New Car Features

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.

Pub. No.

RM0250U
NM0250U

NOTICE

Always follow the directions given in the above repair manuals when handling
supplemental restraint system components (such as removal, installation,
inspection, etc.) in order to prevent accidents and supplemental restraint
system malfunction.

E2006

All rights reserved. This book may not be
reproduced or copied, in whole or in part, without
the written permission of Toyota Motor
Corporation.
First Printing : Jan. 13, 2006 01–060113–00

2007 CAMRY

ELECTRICAL WIRING DIAGRAM

Section Code

INTRODUCTION A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

HOW TO USE THIS MANUAL B. . . . . . . . . . . . . . . . . . .

TROUBLESHOOTING C. . . . . . . . . . . . . . . . . . . . . . . . . .

ABBREVIATIONS D. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

GLOSSARY OF TERMS AND SYMBOLS E. . . . . . . . . 18

RELAY LOCATIONS F. . . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRICAL WIRING ROUTING G. . . . . . . . . . . . . . .

SYSTEM CIRCUITS H. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page

3
12
17

20
48
70

GROUND POINT I. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

POWER SOURCE (Current Flow Chart) J. . . . . . . . .

CONNECTOR LIST K. . . . . . . . . . . . . . . . . . . . . . . . . . . .

PART NUMBER OF CONNECTORS L. . . . . . . . . . . . .

OVERALL ELECTRICAL WIRING DIAGRAM M. . . . .

396
404
414
436
440

CAMRY (EM0250U)

1

A INTRODUCTION

A

H

This manual consists of the following 13 sections:

No. Section Description

INDEX Index of the contents of this manual.

INTRODUCTION Brief explanation of each section.

HOW TO USE THIS

B

MANUAL

TROUBLE–

C

SHOOTING

D ABBREVIATIONS Defines the abbreviations used in this manual.

GLOSSARY OF
TERMS AND

E

SYMBOLS

Instructions on how to use this manual.

Describes the basic inspection procedures for electrical circuits.

Defines the symbols and functions of major parts.

F RELAY LOCATIONS

ELECTRICAL

G

WIRING ROUTING

INDEX Index of the system circuits.

SYSTEM CIRCUITS

I GROUND POINT Shows ground positions of all parts described in this manual.

POWER SOURCE

J

(Current Flow Chart)

K CONNECTOR LIST

PART NUMBER OF

L

CONNECTORS

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.

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.

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.

OVERALL
ELECTRICAL

M

WIRING DIAGRAM

Provides circuit diagrams showing the circuit connections.

2

CAMRY (EM0250U)

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 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.

CAMRY (EM0250U)

3

B HOW TO USE THIS MANUAL

* The system shown here is an EXAMPLE ONL Y . It is different to the actual

circuit shown in the SYSTEM CIRCUITS SECTION.

[A]

Stop Light

[D]

[B]

G – W

Skid Control ECU

with Actuator

(BAT)

2

1

W – RG – W

2

1

G – W

15A
STOP

H6

Stop Lamp SW

(IG)

7.5A
GAUGE

34

IB

R

[M]

(S/D)

[C]

CH114

LL

(W/G)

CH1

15

L

[E]

(S/D) (S/D)

[F]

IB

R – L

3C

7

[G]

3C

15

R – L

4

Rear

Lights

H7

13

Y – G

Combination Meter

H4

7

Light Failure Sensor

12

48

11

[H]

1

G – R

HJ1

G – R G – R

4

Stop

Rear Combination Lamp (RH)

3

W – B G – R

J7

1

HJ1

3

6

W – BW – B

W – B

H1 H2

[N]

Stop

Rear Combination Lamp (LH)

H9

[K]

[I]

(Shielded)

[J]

G – B

2

1

W – B

H17

Center Stop
Lamp

W – B

4

50

[L]

CAMRY (EM0250U)

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

[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 code for the (male and female)

connectors which are used to join two wire
harnesses. The connector code consists of two
alphabetical and one numerical characters.

Female Male ( )

The first character of the connector code indicates
the alphabetical code allocated to the wire harness
which has the female connector, and the second
shows that of the wire harness which has the male
connector.
The third character indicates a serial number used
to distinguish between the wire harness
combinations in cases when more than one of the
same combination of wire harnesses exist
(e.g. CH1 and CH2).

[H] : Indicates the wiring color.

Wire colors are indicated by an alphabetical code.
B = Black W = White BR = Brown
L = Blue V = V iolet SB = Sky Blue
R = Red G = Green LG = Light Green
P = Pink Y = Yellow GR= Gray
O = Orange
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] : Indicates a shielded cable.

[J] : Indicates the pin number of the connector.

The numbering system is different for female and
male connectors.

Example:

Numbered in other
from upper left to
lower right

Numbered in other
from upper right to
lower left

Symbol (

) indicates the male terminal connector.

Numbers outside connector codes indicate the pin
numbers of both male and female connectors.

[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.

Example:

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

Female

Male

[K] : Indicates the ground point. The code consists of the

two characters: A letter and number.
The first character of the code indicates the
alphabetical code allocated to the wire harness.
The second character indicates a serial number
used to distinguish between the ground points in
cases when more than one ground point exist on the
same wire harness.

[L] : Page No.
[M] : Indicates the ignition key position(s) when the

power is supplied to the fuse(s).

[N] : Indicates a wiring Splice Point.

Example:

CAMRY (EM0250U)

5

B HOW TO USE THIS MANUAL

[O]

[P]

[Q]

[R]

System Outline

Current is applied at all times through the STOP fuse to TERMINAL 2 of the stop lamp 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 lamp 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.

: Parts Location

Code See Page Code See Page Code See Page

H4 36 H7 36 H17 38
H6 36 H9 38 J7 38

: Relay Blocks

Code See Page Relay Blocks (Relay Block Location)

1 18 R/B No.1 (Instrument Panel Brace LH)

: Junction Block and Wire Harness Connector

Code See Page Junction Block and Wire Harness (Connector Location)

3C 22 Instrument Panel Wire and J/B No.3 (Instrument Panel Brace LH)

IB 20 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)

[S]

[T]

: Connector Joining Wire Harness and Wire Harness

Code See Page Joining Wire Harness and Wire Harness (Connector Location)

CH1 42 Engine Room Main Wire and Instrument Panel Wire (Left Kick Panel)

HJ1 50 Instrument Panel Wire and Floor Wire (Right Kick Panel)

: Ground Points

Code See Page Ground Points Location

H1 50 Under the Left Center Pillar
H2 50 Back Panel Center

6

CAMRY (EM0250U)

[O] : Explains the system outline.

[P] : Indicates reference pages showing the parts locations in the system circuit on the vehicle.

Example : Code ”H4” (Light Failure Sensor) is on page 36 of the manual.

* The first character of the code indicates the alphabetical code allocated to the wire harness, and the

second character indicates the serial number of the parts connected to the wire harness.

B

Example : H 4

[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 ”CH1” connects the Engine Room Main 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 ”H2” is described on page 50 of this manual and is installed on the back panel center.

Serial number for the connected parts
Code for the wire harness

CAMRY (EM0250U)

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

A1

the problem ground quickly. The relationship between ground points (
checked this way.

I GROUND POINT

H23

DLC3

(SG)

HB4

DB1

912

10

D43

Junction
Connector

A2

,

6

(Shielded)BRBRBR

and

D4

shown below) can also be

A20

Headlamp Leveling
Motor (LH)

L5

Power Window
Master SW

A22

Cooling Fan
Motor No.3

A8

Headlamp Leveling
Motor (RH)

A5

Pressure SW

A23

Turn Signal Lamp
(Front LH)

A11

Windshield
Wiper Motor

I9

Headlamp
Leveling SW

A6

Clearance Lamp
(Front RH)

A21

Clearance Lamp
(Front LH)

A24

Option Connector
(Vacuum)

B19

Skid Control ECU
with Actuator

(LH E)

(RH E)

(–S)

(GND2)

(GND1)

(GND)

(GND)

5

(Shielded)

(Shielded)

W – B

W – B

(E)

W – B

(E)

W – B

W – B

W – B

(E)

W – B

(E)

(E)

W – B

(E)

W – B

(E)

W – B

W – B

W – B

3

LA1

12 7

IH2

21

W – BW – B

AB1

12

W – B

AB1

HA1

W – B

8

7

4

A25

Junction

Connector

3

W – B W – BW – B

W – B

CA1

W – BW – BW – B

W – B W – B

W – B W – B

A1

W – BW – B

KA1

W – B

W – B

34

2

11

1

BR

5

W – B

3

Junction

Connector

B36

16

W – B

6

AB1

BR

BR

BR

BR

BR

(5L–E)

D4

W – B

W – B

W – B

W – B

W – B

20

W – B

19

W – B

18

W – B

17

(L)

(E1)

(E1)

(E01)

(E02)

(E)

(E)

(E)

(E)

(E)

(Shielded)

(Shielded)

(Shielded)

(Shielded)

D63

Throttle
Position SW

D60

Injection
Pump Assembly

D2

Engine ECU

C2

Fog Lamp
(Front LH)

C4

Fog Lamp
(Front RH)

A10

Brake Fluid Level
Warning SW

A1

Turn Signal Lamp
(Front RH)

K5

Power Window
Master SW

W – B

A2

W – B

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

8

CAMRY (EM0250U)

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, Fues, etc.) and other parts

Battery

30A AM2

Starter

2

S 2

Fusible Link Block

100A AL T

Engine Room R/B (See Page 20)

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 System
Theft Deterrent and Door Lock Control

20A

10A

Fuse

STOP

DOME

Power Source

6

6

Short Pin

15A EFI

10A HAZARD

20A RADIO NO.1

10A HORN

60A ABS

10A ECU–B

2

7.5A DOME

2

5

2

Page

194
187
180
166
210

214
230
112
122

1

B

BA1

B

2

B

2

1.25B
FL MAIN

W

50A MAIN

7.5A AM1

15A HAZ–RADIO

1

Battery

W – R

W

AH1

AH1

7

6

21

2

21

2

2

2

ACC

W – R

8

AM1

IG1

2

WW

ST1

W

W

4

AM2

H8

Ignition SW

IG2

ST2

B – Y

7.5A DOME

1

1

20A DEFOG

121W – R

1

2

R

1

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

9

CAMRY (EM0250U)

B HOW TO USE THIS MANUAL

K CONNECTOR LIST

A1

Black

[A]

A2

A3

Gray

[C]

1234

B1

Black

12
3456

1234
5678

[B]

123 45
678910111213

12345 76

B2

Gray

[D]

K CONNECTOR LIST

Black

123 45
6 7 8 9 10 11 12 13

BA1

13 6789101112

[E]

12345

12 34
567891011

[A] : Indicates connector to be connected to a part. (The numeral indicates the pin No.)

BD2

Gray

43 21

11

[F]

5678910

[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.

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.

[E] : Indicates the connector shapes which are used to join wire harnesses.

On Left : Female connector shapes
On Right : Male connector shapes
Numbers indicate pin numbers.

[F] : Indicates connector colors. (Connectors with not indicated colors are white)

10

CAMRY (EM0250U)

L PART NUMBER OF CONNECTORS

B

Code

A1

Turn Signal Lamp (Front RH)
A2 Inlet Air Temp. Sensor 90980–1 1163 B23 Front Seat Outer Belt (LH) 90980–12253
A3 Air Flow Meter 90980–12292 B24 Blower SW (Rear Heater) 90980–10463
A4 A/C Pressure Sensor 90980–10845
A5 Pressure SW
A6 Clearance Lamp (Front RH)
A7 Headlamp (RH)

[A]

A9 Brake Vacuum Warning SW

A10
A11
A12
A13 Airbag Squib

[B]

Brake Fluid Level Warning SW

Airbag Sensor (Front RH) Junction Connector

[A] : Part Code
[B] : Part Name
[C] : Part Number

Toyota Part Number are indicated.

Part Number

90980–11019

90980–10943
90980–11156
90980–11314

[C]

90980–11016
90980–11252
90980–11207
90980–11599
90980–11856

90980–12490

Code

B22 Door Courtesy SW (Front LH)

B25 Front Seat Outer Belt (RH) 90980–12253
B26 Door Courtesy SW (Front RH) 90980–12470
B27

Cooling Fan ECU No.1

B28

Cooling Fan ECU No.2

B29

Water Temp. Sensor (Radiator)

B30

Fuel Filter Warning SW

B32

Door Control Relay (LH)
B33
B34
B35

Junction Connector 90980–1 1398

Part NumberPart NamePart Name

90980–12470

90980–10841

90980–10735A8 Headlamp Leveling Motor (RH)
90980–11003
90980–10789
90980–10121Windshield Washer Motor Step Lamp (LH)

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

CAMRY (EM0250U)

11

C TROUBLESHOOTING

SW 2

To Ignition SW
IG Terminal

Fuse

[A]

[B]

Relay

[C]

Solenoid

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

VoltmeterSW 1

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.

CONTINUITY AND RESISTANCE CHECK

Ohmmeter

SW

Ohmmeter

Diode

Digital Type Analog Type

(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.

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.

(c) Use a volt/ohmmeter with high impedance (10 kΩ/V

minimum) for troubleshooting of the electrical circuit.

12

CAMRY (EM0250U)

C

Test Light

Disconnect

To Ignition SW
IG Terminal

Fuse Case

Short [A]

SW 1

Short [B]

Disconnect

RelayLight

Short [C]

Disconnect

SW 2 Solenoid

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.

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).

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

Press Down Press Down

Pull Up

CAMRY (EM0250U)

13

C TROUBLESHOOTING

Reference:

10

1

Example:
(Case 1)

Terminal Retainer

HOW TO REPLACE TERMINAL
(with terminal retainer or secondary locking device)

1. PREPARE THE SPECIAL TOOL

3

0.2

Up

Tool

1

(mm)

HINT : To remov e the te rmin al from th e connector, please

construct and use the special tool or like object shown on
the left.

2. DISCONNECT CONNECT OR

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

[Retainer at Full Lock Position]

Stopper

[Retainer at Temporary Lock Position]

Example:
(Case 2)

Terminal
Retainer

Secondary
Locking Device

[A] 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.

”Case 2”

Open the secondary locking device.

14

CAMRY (EM0250U)

Tab

Tab

C

Tool

Example:

(Case 1)

Tool

[Male]

Terminal
Retainer

Access Hole

( Mark)

Retainer
at Full Lock Position

[Female]

Tool

[B] For Waterproof Type Connector

HINT : Terminal r etainer co lor is different

according to connector body.
Example:

Terminal Retainer

: Connector Body
Black or White : Gray
Black or White : Dark Gray
Gray or White : Black

”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.

HINT : The needle insertion position varies

according to the connector’s shape
(Number of terminals etc.), so check
the position before inserting it.

Example:
(Case 2)

[Male]

Retainer
at Temporary Lock Position

[Male] [Female]

Terminal Retainer

Tool

Press Down

Press Down

[Female]

CAMRY (EM0250U)

”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

15

C TROUBLESHOOTING

Retainer at
Full Lock Position

Retainer at
Temporary Lock Position

[Male] [Female]

Push the terminal retainer down to the temporary lock position.

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.

16

(b) Push the secondary locking device or terminal retainer in to

the full lock position.

5. CONNECT CONNECT OR

CAMRY (EM0250U)

ABBREVIATIONS D

ABBREVIATIONS

The following abbreviations are used in this manual.
A/C = Air Conditioning

A/T = Automatic Transaxle
ABS = Anti–Lock Brake System
ACIS = Acoustic Control Induction System
ACM = Active Control Engine Mount
CAN = Controller Area Network
EC = Electrochromic
ECU = Electronic Control Unit
ESA = Electronic Spark Advance
ETCS–i = Electronic Throttle Control System–intelligent
FL = Fusible Link
IC = Integrated Circuit
J/B = Junction Block
LCD = Liquid Crystal Display
LH = Left–Hand
M/T = Manual Transaxle
R/B = Relay Block
RH = Right–Hand
SFI = Sequential Multiport Fuel Injection
SRS = Supplemental Restraint System
SW = Switch
TEMP. = Temperature
TRAC = Traction Control
VSC = Vehicle Stability Control
VSV = Vacuum Switching Valve
VVT = Variable Valve Timing
VVT–i = Variable Valve Timing–intelligent
w/ = With
w/o = Without

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

abbreviations.

CAMRY (EM0250U)

17

E GLOSSARY OF TERMS AND SYMBOLS

FUSIBLE LINK

FUSIBLE LINK

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.

CIGARETTE LIGHTER

An electric resistance heating
element.

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.

1. SINGLE
FILAMENT

2. DOUBLE
FILAMENT

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
filament to heat up and emit light. A
headlight may have either a single
(1) filament or a double (2) filament

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.

(for Medium Current Fuse)

(for High Current Fuse or
Fusible Link)

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.

PHOTODIODE

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

DISTRIBUTOR, IIA

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

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.

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.

FUEL

M

LIGHT

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

LED (LIGHT EMITTING DIODE)

Upon current flow, these diodes emit
light without producing the heat of a
comparable light.

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.

18

CAMRY (EM0250U)

E

Opens and closes

operational.

black dot at the junction are

black dot at the junction are

RELAY

1. NORMALLY
CLOSED

2. NORMALLY
OPEN

RELAY, DOUBLE THROW

RESISTOR

RESISTOR, TAPPED

RESISTOR, VARIABLE or RHEOSTAT

Basically, an electrically operated
switch which may be normally
closed (1) or open (2).
Current flow through a small coil
creates a magnetic field which either
opens or closes an attached switch.

A relay which passes current
through one set of contacts or the
other.

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

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

A controllable resistor with a variable
rate of resistance.
Also called a potentiometer or
rheostat.

SPEAKER

An electromechanical device which
creates sound waves from current
flow.

SWITCH, MANUAL

Opens and closes

1. NORMALLY
OPEN

2. NORMALLY
CLOSED

SWITCH, DOUBLE THROW

A switch which continuously passes
current through one set of contacts
or the other.

SWITCH, IGNITION

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

circuits, thereby
stopping (1) or
allowing (2) current
flow.

(Reed Switch Type)

SENSOR (Thermistor)

A resistor which varies its resistance
with temperature.

SENSOR, SPEED

Uses magnetic impulses to open
and close a switch to create a signal
for activation of other components.

SHORT PIN

Used to provide an unbroken
connection within a junction block.

SOLENOID

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

SWITCH, WIPER PARK

Automatically returns wipers to the
stop position when the wiper switch
is turned off.

TRANSISTOR

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

WIRES

(1) NOT
CONNECTED

(2) SPLICED

Wires are always drawn as
straight lines on wiring
diagrams.
Crossed wires (1) without a

not joined;
crossed wires (2) with a
black dot or octagonal ( )
mark at the junction are
spliced (joined)
connections.

19

CAMRY (EM0250U)

F RELAY LOCATIONS

)

r

t

r

M

T

I
J

[Engine Compartment]

Engine Control
Module(2GR-FE)

Skid Control ECU
with Actuator

[Instrument Panel]

ID Code Box (*1)
Transponder Key ECU (*2)

Cooling Fan ECU

Junction Connector (CAN) J/B No.4

Transmission Control ECU

Engine Control
Module(2AZ-FE

Engine Room
R/B
Engine Room
J/B

A/C Amplifie

J/B No.3

urn Signal Flasher

ain Body ECU

nstrument Panel

/B

* 1:w/ Smart System
* 2:w/o Smart System

Steering Lock ECU Transponder Key Amplifier

Certification ECU

Tire Pressure
Warning ECU

Airbag Sensor
Assembly Cente

Stereo Componen
Amplifier

Shift Lock Control ECU

20

CAMRY (EM0250U)

[Body]

F

Sliding Roof Control ECU and Motor Door Control Receiver

Overhead J/B

[Seat]

Tire Pressure Warning
Antenna and Receiver

Occupant
Classification
ECU

CAMRY (EM0250U)

21

F RELAY LOCATIONS

Engine Compartment Left (See Page 20)

1

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

1G

1

(from Engine Room Main Wire)
Wire Color : W

1F

1

(from Engine Room Main Wire)
Wire Color : B

Unit D

H-LP (LH)

15A

H-LP (RH)

15A

H-LP (LL)

15A

H-LP (RL)

15A

HORN

10A

EFI NO.1

10A

MPX-B

10A

A/F

20A

S-HORN

7.5A

EFI NO.2

15A

EFI NO.3

10A

RADIO NO.1

21

ECU-B NO.1

21

DOME

15A

10A

10A

12

12

SHORT

2

30A

1

EFI MAIN

2

25A

AMP

1

2

25A

1

DOOR NO.1

STR LOCK

20A

21

IG2

20A

21
HAZ
15A

1

2

ETCS

1

212

10A

12

* 1:120A ALT (for High Current)
* 2:30A ST/AM2 (for High Current)
* 3:50A HTR (for High Current)
* 4:50A ABS No.1 (for High Current)
* 5:50A FAN MAIN (for High Current)
* 6:30A ABS No.2 (for High Current)
* 7:50A RR DEF (for High Current)
* 8:40A CDS FAN (for High Current)

*9

*2

*8

*7

*6

*5

* 9:40A RDI FAN (for High Current)

Unit B

*4

*1

*3

Unit A

1C

(from Engine Wire)
Wire Color : B

1

22

RR DEF Relay

IG2 Relay

ST CUT Relay

ST Relay

MGC Relay

3

12

4
5

3
5

12

3
5

12

3
5

12

3
5

12

Unit C Unit E

ALT-S

12

7.5A
AM2

12

7.5A

1

35

2

2

35

1

VSC No.1 Relay

VSC NO.2 Relay

CAMRY (EM0250U)

Unit E

F

FAN NO.1 Relay

FAN NO.3 Relay

FAN NO.2 Relay

2AZ-FE

1

2

1

2

1
4

2

2GR-FE

35

35

2

35

35

1

FAN MAIN Relay

CAMRY (EM0250U)

23

F RELAY LOCATIONS

Engine Compartment Left (See Page 20)

1

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

Unit D

View A

View B

View C

24

CAMRY (EM0250U)

F

View A

Black

12345

123456

(from Engine Room
Main Wire)

1A

12345

(from Engine Room
Main Wire)

1B

123456

10111213

(from Engine Room
Main Wire)

6789
12345

View B

Black

678910111213
12345

(from Engine Room
Main Wire)

1D 1E

543 21

12345
6789

CAMRY (EM0250U)

1011121310111213

6987

View C

25

F RELAY LOCATIONS

[Engine Room R/B and Engine Room J/B Inner Circuit]

Unit C

1 1

1

1

15A EFI NO.2

1

10A EFI NO.3

2

2

1

1

1

15A RADIO NO.1

1

SHORT

1

1G

21

10A ECU-B NO.1

1

10A DOME

12

7.5A AM2

1

7.5A ALT-S

1

10A ETCS

1

15A HAZ

1

20A IG2

1

20A STR LOCK

1

30A EFI MAIN

2

2

2

2

2

2

2

2

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

26

12

25A AMP

21

25A DOOR NO.1

(Cont. Next Page)

CAMRY (EM0250U)

1

1

F

(Cont'd)

Unit A

30A ST/AM2

120A
ALT

1

1C

1

1F

1
1
1
1

1
1
1
1

Unit B

50A HTR

1

1

50A ABS No.1

1

50A FAN MAIN

1

30A ABS No.2

1

50A RR DEF

1

1

1

40A CDS FAN

1

40A RDI FAN

1

(Cont. Next Page)

CAMRY (EM0250U)

27

F RELAY LOCATIONS

[Engine Room R/B and Engine Room J/B Inner Circuit]

(Cont'd)

Unit D

11

4

1A

5

1A

1D

3

1A

2

1A

5

1B

4

1B

20A A/F

7.5A S-HORN

10A MPX-B

10A EFI NO.1

15A H-LP (RL)

15A H-LP (LL)

A/F Relay

S-HORN Relay

H-LP (RL) Relay

H-LP (LL) Relay

28

3

1B

2

1B

15A H-LP (RH)

15A H-LP (LH)

DRL Relay

(Cont. Next Page)

CAMRY (EM0250U)

(Cont'd)

F

10

10
11

13

6

1B

1D

9

1D
1E
1E

1E

10A HORN

HORN Relay

Light Control Circuit

EFI Relay

C/OPN Relay

12

8

1D

1E

9

1E

6

1E

7

1E

8

1E

12

1D

CAMRY (EM0250U)

29