2006 xb electrical wiring...

SCION xB (EM0091U)

1

2006 xBELECTRICAL WIRING DIAGRAM

Section Code Page

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

HOW TO USE THIS MANUAL B. . . . . . . . . . . . . . . . . . . 3

TROUBLESHOOTING C. . . . . . . . . . . . . . . . . . . . . . . . . . 12

ABBREVIATIONS D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

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

RELAY LOCATIONS F. . . . . . . . . . . . . . . . . . . . . . . . . . . 20

ELECTRICAL WIRING ROUTING G. . . . . . . . . . . . . . . 28

SYSTEM CIRCUITS H. . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

GROUND POINT I. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

POWER SOURCE (Current Flow Chart) J. . . . . . . . . 172

CONNECTOR LIST K. . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

PART NUMBER OF CONNECTORS L. . . . . . . . . . . . . 190

OVERALL ELECTRICAL WIRING DIAGRAM M. . . . . 194

2

SCION xB (EM0091U)

A INTRODUCTION

This manual consists of the following 13 sections:

No. Section Description

AINDEX Index of the contents of this manual.

AINTRODUCTION Brief explanation of each section.

B HOW TO USE THISMANUAL Instructions on how to use this manual.

C TROUBLE–SHOOTING Describes the basic inspection procedures for electrical circuits.

D ABBREVIATIONS Defines the abbreviations used in this manual.

EGLOSSARY OFTERMS ANDSYMBOLS

Defines the symbols and functions of major parts.

F RELAY LOCATIONS Shows position of the Electronic Control Unit, Relays, Relay Block, etc.This section is closely related to the system circuit.

G ELECTRICALWIRING ROUTING

Describes position of Parts Connectors, Splice points, Ground points, etc.This section is closely related to the system circuit.

H

INDEX Index of the system circuits.

HSYSTEM CIRCUITS

Electrical circuits of each system are shown from the power supply through groundpoints. Wiring connections and their positions are shown and classified by codeaccording to the connection method. (Refer to the section, ”How to use this manual”).The ”System Outline” and ”Service Hints” useful for troubleshooting are also containedin this section.

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

J POWER SOURCE(Current Flow Chart) Describes power distribution from the power supply to various electrical loads.

K CONNECTOR LIST Describes the form of the connectors for the parts appeared in this book.This section is closely related to the system circuit.

L PART NUMBER OFCONNECTORS Indicates the part number of the connectors used in this manual.

MOVERALLELECTRICALWIRING DIAGRAM

Provides circuit diagrams showing the circuit connections.

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

2005All rights reserved. This book may not bereproduced or copied, in whole or in part, withoutthe written permission of Toyota MotorCorporation.First Printing : Nov. 28, 2005 01–051128–00

FOREWORD

This wiring diagram manual has been prepared to provide

information on the electrical system of the 2006 xB.

This manual applies to the models listed below. It covers all

information in the previously issued Pub. No. EM0090U, and

includes all production changes effective Dec. 2005 or later.

Applicable models: NCP31 Series

Refer to the following manuals for additional service

specifications and repair procedures for these models:

Manual Name Pub. No. 2006 SCION xB Repair Manual

2006 SCION New Car Features

RM0091U

NM0060U

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.

SCION xB (EM0091U)

3

HOW TO USE THIS MANUAL B

This manual provides information on the electrical circuits installed on vehicles bydividing them into a circuit for each system.

The actual wiring of each system circuit is shown from the point where the powersource is received from the battery as far as each ground point. (All circuitdiagrams are shown with the switches in the OFF position.)

When troubleshooting any problem, first understand the operation of the circuitwhere the problem was detected (see System Circuit section), the power sourcesupplying power to that circuit (see Power Source section), and the ground points(see Ground Point section). See the System Outline to understand the circuitoperation.

When the circuit operation is understood, begin troubleshooting of the problemcircuit to isolate the cause. Use Relay Location and Electrical Wiring Routingsections to find each part, junction block and wiring harness connectors, wiringharness and wiring harness connectors and ground points of each system circuit.Internal wiring for each junction block is also provided for better understanding ofconnection 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 ElectricalWiring Diagram at the end of this manual.

[B]W

– R

G –

W

Ski

d C

ontr

ol E

CU

with

Act

uato

r

G –

W

C7

Y –

G

Com

bina

tion

Met

er

R –

L

Rea

rLi

ghts

R –

L

(S/D

)(S

/D)

(S/D

)

(W/G

)

G –

B

W –

B

W –

B

Rea

r C

ombi

natio

nR

6

W –

BW

– B

Rea

r C

ombi

natio

nR

7

W –

BG

– R

Sto

p

Sto

p

G –

RG

– R

7

LL

R

L

Stop Light

2

(BAT)

15ASTOP

(IG)

IBIB

7.5AGAUGE

3 41

[A]

S6Stop Light SW

G – W

1

2

[D]

[C]

[E]

[F]

[G]

[N]

L4Light Failure Sensor

3C

3C

15 IE1

IE114

7

15

48

13

4

50

[K]

[H]

[I]

[L]

[M]

[J]

11

H17High MountedStop Light

(Shielded)

BO BL

BV1W – B

G – RBV1

1

2

6

3

3

4

1

1

12

Ligh

t RH

Ligh

t LH

4

SCION xB (EM0091U)

B HOW TO USE THIS MANUAL

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

SCION xB (EM0091U)

5

B

[A] : System Title

[B] : Indicates a Relay Block. No shading is used andonly the Relay Block No. is shown to distinguish itfrom the J/BExample: Indicates Relay Block No.1

[C] : ( ) is used to indicate different wiring andconnector, etc. when the vehicle model, enginetype, or specification is different.

[D] : Indicates related system.

[E] : Indicates the wiring harness and wiring harnessconnector. The wiring harness with male terminal isshown with arrows ( ).Outside numerals are pin numbers.

Female Male ( )

The first letter of the code for each wiring harnessand wiring harness connector(s) indicates thecomponent’s location, e.g, ”E” for the EngineCompartment, ”I” for the Instrument Panel andSurrounding area, and ”B” for the Body andSurrounding area.

When more than one code has the first and secondletters in common, followed by numbers (e.g, IH1,IH2), this indicates the same type of wiring harnessand wiring harness connector.

[F] : Represents a part (all parts are shown in sky blue).The code is the same as the code used in partsposition.

[G] : Junction Block (The number in the circle is the J/BNo. and the connector code is shown beside it).Junction Blocks are shaded to clearly separatethem from other parts.

3C indicates thatit is insideJunction BlockNo.3

Example:

[H] : Indicates the wiring color.

Wire colors are indicated by an alphabetical code.

B = Black W = White BR = Brown

L = Blue V = Violet 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 thesecond letter indicates the color of the stripe.

Example: L – Y

L(Blue)

Y(Yellow)

[I] : Indicates a wiring Splice Point

Example:

[J] : Indicates a shielded cable.

[K] : Indicates the pin number of the connector.The numbering system is different for female andmale connectors.

Example: Numbered in orderfrom upper left tolower right

Numbered in orderfrom upper right tolower left

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 theEngine Compartment, ”I” for the Instrument Paneland Surrounding area, and ”B” for the Body andSurrounding area.

[M] : Page No.

[N] : Indicates the ignition key position(s) when thepower is supplied to the fuse(s).

[O]

[P]

[Q]

[R]

[S]

[T]

6

SCION xB (EM0091U)


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 flowsthrough the rear lights warning light to TERMINAL 4 of the light failure sensor.

Stop Light Disconnection WarningWhen the ignition SW is turned on and the brake pedal is pressed (Stop light SW on), if the stop light circuit is open, the currentflowing from TERMINAL 7 of the light failure sensor to TERMINALS 1, 2 changes, so the light failure sensor detects thedisconnection 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 lightswarning light on. By pressing the brake pedal, the current flowing to TERMINAL 8 of the light failure sensor keeps the warningcircuit 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

C7 34 L4 36 R7 37

H17 36 R6 37 S6 35

: 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)

: Connector Joining Wire Harness and Wire Harness

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

IE1 42 Floor Wire and Instrument Panel Wire (Left Kick Panel)

BV1 50 Luggage Room Wire and Floor Wire (Luggage Room Left)

: Ground Points

Code See Page Ground Points Location

BL 50 Under the Left Center Pillar

BO 50 Back Panel Center

System Outline

SCION xB (EM0091U)

7

B

[O] : Explains the system outline.

[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.Example : L 4 Á

ÁParts is 4th in orderLight Failure Sensor

[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 instrumentpanel.

[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 thismanual, and is installed on the instrument panel left side.

[S] : Indicates the reference page describing the wiring harness and wiring harness connector (the female wiringharness 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 onpage 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.

8

SCION xB (EM0091U)


The ground points circuit diagram shows the connections from all major parts to the respective ground points. Whentroubleshooting a faulty ground point, checking the system circuits which use a common ground may help you identifythe problem ground quickly. The relationship between ground points ( EA , IB and IC shown below) can also bechecked this way.

5

5

5

5

4

4

4

4

4BA15

IB18

EA2

ID115

IC33

IA12

W–B

W–B

W–B

W–B

W–B

W–B

W–B

W–B

W–B W–B

W–B

W–B W–B

W–B

W–B W–B W–B

W–B

W–B

W–B

W–B

W–B

W–B

W–B

W–B W–B W–B

W–B

BR

W–B

BR BR

W–B

W–BW–B

W–B

W–B

W–B

W–BW–B W–B

W–B

W–B

W–B

W–B

W–B

BR

W–B

BRBR

BR

W–B(4A–GZE)

W–BW–B

EA

IB IC

4

4

3E5

3E6

3G13

3F3

3D1

3B7

W–B

W–B

W–BW–B

W–B

W–B

W–B

W–B

W–B

W–B

W–B

W–B

W–B

W–B

W–B3C7

10

A

A

A

A

A

A

JunctionConnector

J 1

W–B

W–B

W–B

W–B

BR

W–B

W–B

W–B

W–B

W–B

W–B

I GROUND POINT

FAN MAIN Relay

FAN MAIN Relay

A/C Relay No.2

A/C Relay No.3

Radiator Fan Motor

Headlight Cleaner Relay

Headlight LH

Headlight RH

Front Fog Light LH

Brake Fluid Level SW

Front Fog Light RHFront Turn Signal Light RH

Front Clearance Light RH

Front Turn Signal Light LH

Front Clearance Light LH

Door Lock Control SW

Door Courtesy SW RH

Door Lock Motor RH

Door Lock Control Relay

Blower Resistor

Idle–Up SW

A/C Amplifier

Radio and Player

HEATER Relay

Auto Antenna Motor

A/C Control Assembly

Blower Motor

Blower SW

Parking Brake SW

Combination Meter

Combination SW

Cruise Control ECU

Remote Control Mirror SW

Turn Signal Flasher

Defogger SW

Unlock Warning SW

Power Window Master SW

Power Window ControlRelay

Door Courtesy SW LH

Door Lock Control SW

Door Lock Motor LH

Fuel Control SW

Woofer Speaker Amplifier

Combination Meter

Combination Meter

Fuel Sender

Cigarette Lighter

O/D Main SW

Clock

Combination SW

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

SCION xB (EM0091U)

9

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 systemare explained. Since all System Circuit diagrams start from the power source, the power source system must be fullyunderstood.

AM

2

AM

1

IG2

AC

C

IG1

ST

1

ST

2

W –

R

W

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

30A AM2

Starter

Battery Fusible Link Block

100A ALT

2 6

6

Short Pin10A ECU–B

7.5A DOME2

15A EFI

10A HAZARD

20A RADIO NO.1

10A HORN

60A ABS

2

2

S 2

5

Engine Room R/B (See Page 20)

194187180166210

214230112122

Page

ABSABS and Traction ControlCruise ControlElectronically Controlled TransmissionMultiplex Communication System

Fuse

STOP20A

10A DOME

Cigarette LighterCombination MeterHeadlightInterior LightKey Reminder and Seat Belt WarningLight Auto Turn Off System

System

Theft Deterrent and Door Lock Control

1.25BFL MAIN

Power Source

50A MAIN

4

11 2

1W – R

20A DEFOG

B – Y

8

2

I8

W – R

Ignition SW

11

7.5A DOME

21

RWEB1

7

EB1

BA11

6

W

WW

Battery

B

B

B2

21

22

2

2

7.5A AM1

15A HAZ–RADIO

1

212

W

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

K CONNECTOR LIST

1 2 3 4

Dark GrayI14

1 2 3 4

5 6 7 8

I15

1 2 3 4 5 76

GrayI16[A] [C]

K CONNECTOR LIST

1 2 3 4 56 7 8 9 10 11 12 13

1234513 6789101112

BA1 Black BD2 Gray [F][E]

1 2 3 45 6 7 8 9 10 11 11

4 3 2 1

5678910

A BA A B C C C

D DD D

BAA

AA

AAA A 1

1 2 1 2

[B] Black

J1 J4 K1 K2 L1Dark Gray

[D]

10

SCION xB (EM0091U)


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

[B] : Junction ConnectorIndicates a connector which is connected to a short terminal.

Junction Connector

Short TerminalSame Color

Junction connector in this manual include a short terminal which isconnected to a number of wire harnesses. Always performinspection with the short terminal installed. (When installing thewire harnesses, the harnesses can be connected to any positionwithin the short terminal grouping. Accordingly, in other vehicles,the same position in the short terminal may be connected to a wireharness from a different part.)Wire harness sharing the same short terminal grouping have thesame color.

[C] : Parts CodeThe first letter of the code is taken from the first letter of part, and the numbers indicates its order in parts whichstart with the same letter.

[D] : Connector ColorConnectors not indicated are milky white in color.

[E] : Indicates the connector shapes which are used to join wire harnesses.On Left : Female connector shapesOn Right : Male connector shapesNumbers indicate pin numbers.

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

A 1

L PART NUMBER OF CONNECTORS

A/C Ambient Temp. Sensor

Code

90980–11070

Part Number

D 4 Diode (Courtesy)

Code

90980–11608

A 2 A/C Condenser Fan Motor 90980–11237 D 5 Diode (Interior Light) 90980–10962

A 3 A/C Condenser Fan Relay 90980–10940 D 6 Diode (Moon Roof) 90980–11608

A 4 A/C Condenser Fan Resistor 90980–10928

90980–11271

D 7 Door Lock Control Relay 90980–10848

A 5 A/C Magnetic Clutch

90980–11413

D 8 Door Lock Control SW LH90980–11148

A 6 A/T Oil Temp. Sensor

90980–11151

D 9 Door Lock Control SW RH

A 7 ABS Actuator

90980–11009

Door Courtesy SW LH90980–11097

A 8 ABS Actuator

90980–10941

Door Courtesy SW RH

A 9 ABS Speed Sensor Front LH

90980–11002

Door Courtesy SW Front LH

ABS Speed Sensor Front RH

90980–11856

Door Courtesy SW Front RH90980–11156

Airbag Sensor Front LH Door Courtesy SW Rear LH

Airbag Sensor Front RH Door Courtesy SW Rear RH

A10

A11

A12

A13 Airbag Squib 90980–11194 Door Key Lock and Unlock SW LH90980–11170

90980–11070

D10

D11

D12

D13

D14

D15

D16

D17 Door Key Lock and Unlock SW RH

Part NumberPart NamePart Name

[A] [B] [C]

SCION xB (EM0091U)

11

B

[A] : Part Code

[B] : Part Name

[C] : Part NumberToyota Part Number are indicated.

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

To Ignition SWIG Terminal

Fuse

VoltmeterSW 1

Relay

SW 2 Solenoid

[A]

[B]

[C]

Ohmmeter

SW

Ohmmeter

Diode

Digital Type Analog Type

12

SCION xB (EM0091U)

C TROUBLESHOOTING

VOLTAGE CHECK

(a) Establish conditions in which voltage is present at the checkpoint.

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 groundpoint or negative battery terminal, and the positive lead to theconnector or component terminal.This check can be done with a test light instead of a voltmeter.

CONTINUITY AND RESISTANCE CHECK

(a) Disconnect the battery terminal or wire so there is no voltagebetween the check points.

(b) Contact the two leads of an ohmmeter to each of the checkpoints.

If the circuit has diodes, reverse the two leads and checkagain.When contacting the negative lead to the diode positive sideand the positive lead to the negative side, there should becontinuity.When contacting the two leads in reverse, there should be nocontinuity.

(c) Use a volt/ohmmeter with high impedance (10 kΩ/Vminimum) for troubleshooting of the electrical circuit.

To Ignition SWIG Terminal

Test Light

RelayLight

SW 2 Solenoid

Disconnect

Short [A]

DisconnectDisconnect

SW 1

Fuse Case

Short [B]

Short [C]

Pull Up

Press Down Press Down

Pull Up

SCION xB (EM0091U)

13

C

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 thetest light.The short lies between the connector where the test lightstays lit and the connector where the light goes out.

(e) Find the exact location of the short by lightly shaking theproblem 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) ofthe digital meter, be careful that no part of your body orclothing comes in contact with the terminals of leadsfrom the IC, etc. of the replacement part (spare part).

DISCONNECTION OF MALE AND FEMALECONNECTORS

To pull apart the connectors, pull on the connector itself, notthe wire harness.

HINT : Check to see what kind of connector you aredisconnecting before pulling apart.

(mm)

Reference:

ToolUpExample:(Case 1)

Terminal Retainer

Terminal Retainer

[Retainer at Full Lock Position]

[Retainer at Temporary Lock Position]

StopperTerminalRetainer

SecondaryLocking Device

Example:(Case 2)

14

SCION xB (EM0091U)

C TROUBLESHOOTING

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

1. PREPARE THE SPECIAL TOOL

HINT : To remove the terminal from the connector, pleaseconstruct and use the special tool or like object shown onthe left.

2. DISCONNECT CONNECTOR

3. DISENGAGE THE SECONDARY LOCKING DEVICE OR

TERMINAL RETAINER.

(a) Locking device must be disengaged before the terminallocking clip can be released and the terminal removed fromthe connector.

(b) Use a special tool or the terminal pick to unlock the secondarylocking device or terminal retainer.

NOTICE:Do not remove the terminal retainer from connector body.

[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.

ToolTab

Tab

TerminalRetainer

Access Hole( Mark)

Tool

Tool

[Female]

Example:

[Male]

(Case 1)

[Male] [Female]

Retainerat Full Lock Position

Retainerat Temporary Lock Position

Terminal Retainer

[Male] Press Down [Female]Press Down

ToolTool

Example:(Case 2)

SCION xB (EM0091U)

15

C

[B] For Waterproof Type Connector

HINT : Terminal retainer color is differentaccording to connector body.

Example:Terminal Retainer : Connector BodyBlack or White : GrayBlack or White : Dark GrayGray or White : Black

”Case 1”Type where terminal retainer is pulledup to the temporary lock position (PullType).

Insert the special tool into the terminalretainer access hole (Mark) and pullthe terminal retainer up to thetemporary lock position.

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

”Case 2”Type which cannot be pulled as far asPower Lock insert the tool straight intothe access hole of terminal retainer asshown.

Retainer atFull Lock Position

[Male] [Female]

Retainer atTemporary Lock Position

Locking Lug

Tool

16

SCION xB (EM0091U)

C TROUBLESHOOTING

Push the terminal retainer down to the temporary lock position.

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

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 tothe full lock position.

5. CONNECT CONNECTOR

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

SCION xB (EM0091U)

17

ABBREVIATIONS D

ABBREVIATIONS

The following abbreviations are used in this manual.

A/C = Air Conditioning

A/T = Automatic Transaxle

ABS = Anti–Lock Brake System

CAN = Controller Area Network

CPU = Central Processing Unit

ECU = Electronic Control Unit

ESA = Electronic Spark Advance

IAC = Idle Air Control

IC = Integrated Circuit

INT = Intermittent

J/B = Junction Block

LCD = Liquid Crystal Display

LH = Left–Hand

O/D = Overdrive

PTC = Positive Temperature Coefficient

R/B = Relay Block

RH = Right–Hand

SFI = Sequential Multiport Fuel Injection

SRS = Supplemental Restraint System

SW = Switch

TEMP. = Temperature

TRAC = Traction Control

TVIP = TOYOTA Vehicle Intrusion Protection

VSC = Vehicle Stability Control

VSV = Vacuum Switching Valve

18

SCION xB (EM0091U)

E GLOSSARY OF TERMS AND SYMBOLS

BATTERYStores chemical energy andconverts it into electrical energy.Provides DC current for the auto’svarious electrical circuits.

GROUNDThe point at which wiring attaches tothe Body, thereby providing a returnpath for an electrical circuit; without aground, current cannot flow.

CAPACITOR (Condenser)A small holding unit for temporarystorage of electrical voltage.

HEADLIGHTSCurrent flow causes a headlightfilament to heat up and emit light. Aheadlight may have either a single(1) filament or a double (2) filament

1. SINGLE FILAMENT

CIGARETTE LIGHTERAn electric resistance heatingelement.

2. DOUBLE FILAMENT

CIRCUIT BREAKERBasically a reusable fuse, a circuitbreaker will heat and open if toomuch current flows through it.Some units automatically reset whencool, others must be manually reset.

HORNAn electric device which sounds aloud audible signal.

DIODEA semiconductor which allowscurrent flow in only one direction.

IGNITION COILConverts low–voltage DC currentinto high–voltage ignition current forfiring the spark plugs.

DIODE, ZENERA diode which allows current flow in onedirection but blocks reverse flow only upto a specific voltage. Above that potential,it passes the excess voltage. This acts asa simple voltage regulator.

LIGHTCurrent flow through a filamentcauses the filament to heat up andemit light.

PHOTODIODEThe photodiode is a semiconductorwhich controls the current flowaccording to the amount of light.

LED (LIGHT EMITTING DIODE)Upon current flow, these diodes emitlight without producing the heat of acomparable light.

DISTRIBUTOR, IIAChannels high–voltage current fromthe ignition coil to the individualspark plugs.

METER, ANALOGCurrent flow activates a magneticcoil which causes a needle to move,thereby providing a relative displayagainst a background calibration.

FUSEA thin metal strip which burns throughwhen too much current flows through it,thereby stopping current flow andprotecting a circuit from damage.

FUSIBLE LINK

METER, DIGITALCurrent flow activates one or manyLED’s, LCD’s, or fluorescentdisplays, which provide a relative ordigital display.

FUEL

FUSIBLE LINKA heavy–gauge wire placed in highamperage circuits which burns through onoverloads, thereby protecting the circuit.The numbers indicate the crosssectionsurface area of the wires.

(for Medium Current Fuse)

(for High Current Fuse or Fusible Link)

MOTORA power unit which convertselectrical energy into mechanicalenergy, especially rotary motion.

M

SCION xB (EM0091U)

19

E

RELAYBasically, an electrically operatedswitch which may be normallyclosed (1) or open (2).Current flow through a small coilcreates a magnetic field which eitheropens or closes an attached switch.

1. NORMALLY CLOSED

2. NORMALLY OPEN

SWITCH, MANUALOpens and closescircuits, thereby

SPEAKERAn electromechanical device whichcreates sound waves from currentflow.

RELAY, DOUBLE THROWA relay which passes currentthrough one set of contacts or theother.

Opens and closescircuits, therebystopping (1) orallowing (2) currentflow.

1. NORMALLY OPEN

2. NORMALLY CLOSED

RESISTORAn electrical component with a fixedresistance, placed in a circuit toreduce voltage to a specific value.

SWITCH, DOUBLE THROWA switch which continuously passescurrent through one set of contactsor the other.

RESISTOR, TAPPEDA resistor which supplies two ormore different non adjustableresistance values.

SWITCH, IGNITIONA key operated switch with severalpositions which allows variouscircuits, particularly the primaryignition circuit, to becomeoperational.

RESISTOR, VARIABLE or RHEOSTATA controllable resistor with a variablerate of resistance.Also called a potentiometer orrheostat.

operational.

SENSOR (Thermistor)A resistor which varies its resistancewith temperature.

SWITCH, WIPER PARKAutomatically returns wipers to thestop position when the wiper switchis turned off.

(Reed Switch Type)

SENSOR, SPEEDUses magnetic impulses to openand close a switch to create a signalfor activation of other components.

TRANSISTORA solidstate device typically used asan electronic relay; stops or passescurrent depending on the voltageapplied at ”base”.

SHORT PINUsed to provide an unbrokenconnection within a junction block.

WIRESWires are always drawn asstraight lines on wiringdiagrams.Crossed wires (1) without ablack dot at the junction are

(1) NOT CONNECTED

SOLENOIDAn electromagnetic coil which formsa magnetic field when current flows,to move a plunger, etc.

black dot at the junction arenot joined;crossed wires (2) with ablack dot or octagonal ( )mark at the junction arespliced (joined)connections.

(2) SPLICED

Engine RoomR/B

ABS R/B

Skid Control ECUwith Actuator

Fusible LinkBlock

20

SCION xB (EM0091U)

F RELAY LOCATIONS

[Engine Compartment]

SCION xB (EM0091U)

21

F

[Instrument Panel]

Airbag SensorAssembly

Engine ControlModule

InstrumentPanel J/B

Door ControlReceiver

Rear WindowDefogger Relay

Headlight Relay

Front Fog LightRelay

Fuse Block

Door LockControl Relay

A/C Amplifier

Shift LockControl SW

[Body]

Occupant Classification ECU

3 51

2

3 51

2

5

2

1

3

1

2

3 5

3 51

23 5

1

24

1

2

1

2

1

2

DO

ME

15A

15A

EFI

HO

RN

15A

15A

AM

2

ST

30A

*1

* 1:H-LP LH / H-LP LO LH* 2:H-LP RH / H-LP LO RH

*210A

10A

ST Relay

FAN NO.2 Relay FAN NO.1 Relay

EFI Relay

HORN Relay

50A HTR SUB1(for High Current)

HTR SUB1 Relay30A RDI(for High Current)

12

122

112

12

12

12

15ASPARE

30ASPARE

40A ABS NO.1(for High Current)

22

SCION xB (EM0091U)

F RELAY LOCATIONS

1 : Engine Room R/B Engine Compartment Left (See Page 20)

SCION xB (EM0091U)

23

F

Fusible Link Block Engine Compartment Left (See Page 20)

120A ALT(for High Current)

3 4 5

60A ABS(for High Current)

1

60A MAIN(for High Current)

2 : ABS R/B Engine Compartment Right (See Page 20)

12

3

53

ABS CUT Relay ABS MTR Relay

5

12

1

2

3456

3

21 4

56789

123

45 13

6789101112 114

3

21 5

678910

1

5

2

1

3

35

1 2

35

1 2

1

2

3456

12

3

456789

123

45

678910111213

12

34

567891011

1

HTR Relay

PWR Relay

FLSH Relay

C/OPN Relay

1

2

1

2

1

2

GAUGE

10A

ACC

15A

7.5A

A. C

7.5A

ECU-IG

WIPER

20A 7.5A

7.5A

OBD

ECU-B

25A

D/L

10A

10A

HAZ

STOP

10A

TAIL

15A

FOG

30A POWER(for High Current)

40A AM1(for High Current)

40A HTR(for High Current)

(from Floor Wire)

(from Floor Wire)

Gray

4(from Engine Room Main Wire)

(from Engine Room Main Wire)

(from Engine Room Main Wire)

1 2 3

4 5 6 7 8

Gray

1

2

30A DEF(for High Current)

1T

1C

1A

1B

1S

24

SCION xB (EM0091U)

F RELAY LOCATIONS

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

89

18 17

7

16

6

15

5

14

4

13

3

12

2

11

1

10

910

20 19

8

18

7

17

6

16

4

14

3

13

2

12

1

1115

55 4 3 2 110 9 8 7 6

3 2 1

45678912345

13 6789101112

5

10

4

9

3

8

2

7

1

6

4 3 2 1

10 9 8 7 6 57

14

6

13

5

12

4

11

3

10

2

9

1

8

123456789101112

1234

56789105678

1234

11

4 3 2 1

5678910

9

18

8

1716

76

1514

54

1312

32

11

1

10

3 4 5 6 7

13 14 15 16 17

2

12

1

11

8

18 19

9 10

201 2 3 4 56 7 8 9 10

987654

321

1 2 3 4 56 7 8 9 10 11 12 13

1 2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 18

109876

54321

1 2 3 4 5 6

7 8 9 10 11 12

1 2 3 45 6 7 8 9 10 11

1 2 3 4

5 6 7 8

7

1413

65

1211

43

109

21

8

1 2 3 4

5 6 7 8 9 101 2 3 4

5 6 7 8 9 10

Black

(from Instrument Panel Wire)













Yellow

10111213141517 16

123456789

18

1P

1G

1H

1E

1J

1K

1N

1O

1D

1F

1L

1M

1R

SCION xB (EM0091U)

25

F

(Cont. next page)

1A4 1F4

1G12

1K10

1F2

1M5

1R1

1G3

1P6

1R2

1G4

1L8

1D5

1O6

1G8

1G5

1L4

1M7

1R10

1B13

1S9

1J2

1N5

1P1

1F7

1K7

1H12

1P5

1P10

1D4

1P3

1E9

1H13

1H2

1P18

1G7

1P8

1H10

1G14

1O7

1H15

1G9

1H16

1G1

1H6

1G18

1H4

1G10

1H17

1F8

1S5

1L7

1N3

1B10

1B11

1A1

1N4

1S4

1G6

1S1

1A3

1O5

1H7

1S3

1A8

1A9

1M8

1R3

1B12

1M9

1F10

1R9

1K8

1K9

1T4

1B5

1D1

1B9

1B4

1H14

1S7

1G16

1B1

1B2

1T3

1D8

1D9

1E1

1P7

1E6

1E10

1R5

1E2

1E4

1G17

1E3

1P9

1H1

1P20

26

SCION xB (EM0091U)

F RELAY LOCATIONS

[Instrument Panel J/B Inner Circuit]

5

1

3

* 1:Before Dec. 2005 Production* 2:From Dec. 2005 Production

2

C/OPN Relay

3

2

5

1

4

1

3

2

5HTR Relay

PWR Relay

FLSH Relay

7

4

1

3

5

6

8

2

7.5A A. C 2 1

12

1 2

40A HTR

40A AM1

30A POWER

10A STOP

10A TAIL

25A D/L

7.5A ECU-B

7.5A OBD

10A HAZ

15A ACC

10A GAUGE

7.5A ECU-IG

20A WIPER

(Cont'd)

21 30A DEF

IG

LL

EL

ER

EHW

LR

GND

+B

1L12 1L5

1H3

1F6

1L13

1F1

1O1

1K6

1T6

1H9

1K11

1K3

1M2

1M6

1N10

1N11

1P13

1P14

1P15

1P16

1P17

1R4

1O8

1J8

1B8

1M4

1L10

1R6

1P4

1A6

1C1

1N8

1N1

1O3

1K12

1L6

1N6

1N9

1T1

1A5

1A2

1N7

1J3

1J5

1O4

1D10

1B3

1H11

1K2

1L11

1K4

1P19

1H5

1A7

1A11

1H8

1F12

1S6

1D3

1D2

1O2

1K1

1K5

1R7

1J6

1F11

1N2

1A10

1H18

1J9

1J7

1J1

1S2

1L1

1L2

1L9

1B7

1S8

1F14

1M3

1M1

1J4

1T5

1B6

1F9

1E5

1G13

1L3

1P11

1R8

1J10

15A FOG(*2)

(*1)

SCION xB (EM0091U)

27

F

28

SCION xB (EM0091U)

G ELECTRICAL WIRING ROUTING

Position of Parts in Engine Compartment

F6

C2

A5

H2

F2

F17

G2

G1

A2

F4

F5

H1

F1

F16(*2)


(*1)

(*1)

(*2)

A4

F3

H3E2 B1 B2 F8 F9 F7

C1C3 H5 A3 H4 A1E1

A 1 A/C Condenser Fan ResistorA 2 A/C Magnetic ValveA 3 A/T Indicator Light SW

Back–Up Light SWPark/Neutral Position SW

A 4 ABS Speed Sensor Front LHA 5 ABS Speed Sensor Front RH

B 1 Back–Up Light SWB 2 Brake Fluid Level Warning SW

C 1 Camshaft Position SensorC 2 Camshaft Timing Oil Control ValveC 3 Crankshaft Position Sensor

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

F 1 Front Airbag Sensor LHF 2 Front Airbag Sensor RHF 3 Front Fog Light LHF 4 Front Fog Light RHF 5 Front Parking Light LH

Front Turn Signal Light LHF 6 Front Parking Light RH

Front Turn Signal Light RHF 7 Front Wiper MotorF 8 Fusible Link BlockF 9 Fusible Link BlockF 16 Front Airbag Sensor LHF 17 Front Airbag Sensor RH

G 1 GeneratorG 2 Generator

H 1 Headlight LHH 2 Headlight RHH 3 Heated Oxygen Sensor (Bank 1 Sensor 1)H 4 Horn (High)H 5 Horn (Low)

SCION xB (EM0091U)

29

G

Position of Parts in Engine Compartment

P2

S2

W1

S1

T2

T1

O1

S3

S4

I1

N1 I2P1 I3 I4 I5 V1 M1

I8I7I6 K1I9 S5 R1

I 1 Idle Air Control ValveI 2 Ignition Coil and Igniter No.1I 3 Ignition Coil and Igniter No.2I 4 Ignition Coil and Igniter No.3I 5 Ignition Coil and Igniter No.4I 6 Injector No.1I 7 Injector No.2I 8 Injector No.3I 9 Injector No.4

K 1 Knock Sensor (Bank 1)

M 1 Mass Air Flow Meter

N 1 Noise Filter (Ignition)

O 1 Oil Pressure SW

P 1 Power Steering Oil Pressure SensorP 2 Pressure Sensor

R 1 Radiator Fan Motor

S 1 Side Turn Signal Light LHS 2 Side Turn Signal Light RHS 3 Skid Control ECU with ActuatorS 4 StarterS 5 Starter

T 1 Throttle Position SensorT 2 Turbine Speed Sensor

V 1 VSV (Purge)

W 1 Washer Motor

30

SCION xB (EM0091U)


Position of Parts in Instrument Panel

I10

C8

D3

C5

H6

F10

D1

F15

B3

B4

E3

E4

I11D4 I12 C6D2 I13I15 A18 A17 A14 A8A6 A12

A9

(*1)

A19

(*2)

C7 C9A13 A11

(*1)


A21

(*2)

A10

(*1)

A20

(*2)

C4 F11H7A7 E5 E6

A 6 A/C ThermistorA 7 A/T Shift Lever Illumination

O/D Main SWA 8 Air Inlet Servo MotorA 9 Airbag Sensor AssemblyA10 Airbag Sensor AssemblyA 11 Airbag Sensor AssemblyA12 Airbag Squib (Front Passenger’s Airbag Assembly)A13 Airbag Squib (Steering Wheel Pad)A14 Antenna AmplifierA17 A/C AmplifierA18 A/C AmplifierA19 Airbag Sensor AssemblyA20 Airbag Sensor AssemblyA21 Airbag Sensor Assembly

B 3 Blower MotorB 4 Blower Resistor

C 4 Cigarette LighterC 5 Clutch Start SWC 6 Combination MeterC 7 Combination SWC 8 Combination SWC 9 Combination SW

D 1 Data Link Connector 3D 2 Defroster Mode Detection SW

Inlet Air Position Detection SWD 3 Door Control ReceiverD 4 Door Lock Control Relay

E 3 Engine Control ModuleE 4 Engine Control ModuleE 5 Engine Control ModuleE 6 Engine Control Module

F 10 Front Fog Light RelayF 11 Front Fog Light SWF 15 Fuse Block

H 6 Headlight RelayH 7 Heated Oxygen Sensor (Bank 1 Sensor 2)

I 10 Ignition SWI 11 Integration Control and PanelI 12 Integration Control and PanelI 13 Integration Control and PanelI 15 Integration Control and Panel

SCION xB (EM0091U)

31

G

Position of Parts in Instrument Panel

J1

O2

N2

R5

R4

J5

J2V2 J3T4 J6 J7 R2 R3 R18 O4 J8 T5

P5S8J4T3R6 S7U1 Y1S6 P3S9O3

P15

J 1 Junction ConnectorJ 2 Junction ConnectorJ 3 Junction ConnectorJ 4 Junction ConnectorJ 5 Junction ConnectorJ 6 Junction ConnectorJ 7 Junction ConnectorJ 8 Junction Connector

N 2 Noise Filter (Rear Window Defogger No.1)

O 2 Option Connector (TVIP)O 3 Option Connector (IPOD Unit)O 4 Option Connector (Radio and Player)

P 3 Parking Brake SWP 5 PTC HeaterP15 Passenger Seat Belt Warning Lamp

R 2 Radio and PlayerR 3 Radio and PlayerR 4 Rear Window Defogger RelayR 5 Remote Control Mirror SWR 6 RheostatR18 Radio and Player

S 6 Shift Lock Control SWS 7 Steering SensorS 8 Stop Light SWS 9 Stereo Jack Adapter

T 3 TRAC OFF SWT 4 Tweeter LHT 5 Tweeter RH

U 1 Unlock Warning SW

V 2 VSC Buzzer

Y 1 Yaw Rate Sensor

32

SCION xB (EM0091U)


Position of Parts in Body

D11

F12

J9

D8

B6

L1

D12F13 D10 I14 D6 H8 D14

A15D13B7

(*1)

B9

(*2)


D5D9J10 F14D7 B8

(*1)

B5C10 A16B10

(*2)

A15 ABS Speed Sensor Rear LHA16 ABS Speed Sensor Rear RH

B 5 Back Door Courtesy SWBack Door Lock Motor

B 6 Back Door Opener SWB 7 Buckle SW LH

Seat Position SensorB 8 Buckle SW RH

Occupant Detection SensorB 9 Buckle SW LH

Seat Position SensorB10 Buckle SW RH

C10 Canister Pump Module

D 5 Door Courtesy SW Front LHD 6 Door Courtesy SW Front RHD 7 Door Courtesy SW Rear LHD 8 Door Courtesy SW Rear RHD 9 Door Key Lock and Unlock SW Front LH

Door Lock Motor Front LHDoor Unlock Detection SW Front LH

D10 Door Key Lock and Unlock SW Front RHDoor Lock Motor Front RH

D11 Door Lock Control SW Front LHPower Window Master SW

D12 Door Lock Control SW Front RHD13 Door Lock Motor Rear LHD14 Door Lock Motor Rear RH

F 12 Front Door Speaker LHF 13 Front Door Speaker RHF 14 Fuel Pump

Fuel Sender

H 8 High Mounted Stop Light

I 14 Interior Light

J 9 Junction ConnectorJ 10 Junction Connector

L 1 License Plate Light

SCION xB (EM0091U)

33

G

Position of Parts in Body

R16

P9

R13

R12

R8

N4

R10

N3

R14

R17O5O6O7O9 P10 P6 O8 O10 P14 P8 P12 R15

P7P13 R11P11 R9 R7

N 3 Noise Filter (Fuel Pump)N 4 Noise Filter

(Stop Light and Rear Window Defogger No.2)

O 5 Occupant Classification ECUO 6 Occupant Classification ECUO 7 Occupant Classification Sensor Front LHO 8 Occupant Classification Sensor Front RHO 9 Occupant Classification Sensor Rear LHO10 Occupant Classification Sensor Rear RH

P 6 Power Window Control SW Front RHP 7 Power Window Control SW Rear LHP 8 Power Window Control SW Rear RHP 9 Power Window Motor Front LHP10 Power Window Motor Front RHP 11 Power Window Motor Rear LHP12 Power Window Motor Rear RHP13 Pretensioner LHP14 Pretensioner RH

R 7 Rear Combination Light LHR 8 Rear Combination Light RHR 9 Rear Side Marker Light LHR10 Rear Side Marker Light RHR11 Rear Speaker LHR12 Rear Speaker RHR13 Rear Window DefoggerR14 Rear Window DefoggerR15 Rear Wiper MotorR16 Remote Control Mirror LHR17 Remote Control Mirror RH

Engine Wire

Sensor Wire

Engine RoomMain Wire

EB1

ECED

EA1

EBEA

34

SCION xB (EM0091U)


: Location of Connector Joining Wire Harness and Wire Harness: Location of Ground Points

SCION xB (EM0091U)

35

G

: Location of Connector Joining Wire Harness and Wire Harness

A/C SubWire

Front DoorRH Wire

Front DoorLH Wire

Floor Wire

IA3 IE1

ID1 Engine WireFloor Wire

IC1

InstrumentPanel Wire

IC2

Engine RoomMain Wire

IB1

IB2

IA2 IA1 IF2

IG2

IF1

IG1

IH1

: Location of Ground Points

IG

IE IF

Rear Door No.1LH Wire

Rear DoorNo.1 RH Wire

Back DoorNo.1 Wire

Front DoorLH Wire

BC1

BE1

BI

BD1

BL

Lamp Wire

BA1

BHFloor Wire

BK BC2Front DoorRH Wire

BB1

Rear WindowNo.2 Wire

Rear WindowNo.1 Wire

BJ BM

36

SCION xB (EM0091U)


: Location of Connector Joining Wire Harness and Wire Harness: Location of Ground Points

38

SCION xB (EM0091U)

Power Source

60A

MA

IN

60A

AB

S

120A

ALT

B1 A3A4

1 2

15A EFI

1 2

15A DOME

1 2

15A HORN

30A ST

21

1 2

10A H–LP LH/H–LP LO LH

1 2

10A H–LP RH/H–LP LO RH

1 2

15A AM2

1

1 2

50A HTR SUB1

1

1

1 1O

7 1A

Battery

1

B

B–R

B–L

B–L

B

B–G

B–G

W–R

W–R

G 2

A5

BS

kid

Con

trol E

CU

with

Act

uato

r

1

1

1

1

1

1

B

B–R

B–W

G–W

L–Y

B–Y

1R

1 2

30A RDI

1L–W

B

F 8(A), F 9(B)

1 2

40A ABS NO. 1

1B

Fusible Link Block

Gen

erat

or

SCION xB (EM0091U)

39

1C1 1 2

40A HTR

1 2

30A POWER

25A D/L

7. 5A ECU–B

10A HAZ

10A TAIL

7. 5A OBD

1 2

40A AM1

1O8

15A ACC

7. 5A ECU–IG

1O3

1O4

1

5

3

2

6

4

AM2

AM1

ACC

IG1

IG2

ST2

10A GAUGE

20A WIPER

1

30A DEF

2

W–B

1

5

2

3

4

7. 5A A. C

IE

1O2

10A STOP

B–G

W–R

HTR Relay

W–L

L–R

B–Y

B

B

I10Ignition SW 1J8

3

1

5

2

1K3

1 27. 5A I/UPIB26 B–YB

W–BR–B

B–R

B–R

W–B

B

Fuse BlockF15


R 4

15A FOG

40

SCION xB (EM0091U)

Power Source

: Parts Location


F8 A 28 F15 30 I10 30

F9 B 28 G2 28 R4 31

: Relay Blocks


1 22 Engine Room R/B (Engine Compartment Left)



1A24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)

1C24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)

1J

25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1K 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)

1O

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



IB2 35 Floor Wire and Instrument Panel Wire (Behind the Reinforcement LH)

: Ground Points


IE 35 Left Kick Panel

SCION xB (EM0091U)

41

Memo

42

SCION xB (EM0091U)

Starting and Ignition60

A M

AIN

3

1

2

1

1

15AAM2

30AST

2

1

1O1

1A7

51A3

1O6

1E6

1O7

1

15

23

M

B1

B–L

A1

EA15

1

B–Y1

EB

1

1

P

N

9

B

6

B–R

B(A/T)

B–W

STRelay

BB

B–R

W–B

W–R

W–R

B

B

B–R

B–Y

(A/T)

B–Y

(M/T)

B–Y

B–Y

( A/T

)

A 3

B–Y

F 8

6

4

AM2 IG2

ST2

I10

Bat

tery

12

1

2

EA1

(M/T)

S 4(A), S 5(B)

C 5

B( A

/T)

B

(M/T)

B

B–YB–Y

(M/T) (M/T)

EA115

B

B

( A/T

)

(A/T)

IF113

1EA1

Par

k/N

eutra

lP

ositi

on S

WClu

tch

Sta

rt S

W

Fusi

ble

Link

Blo

ck

Ignition SW

Starter

IF24

B( A

/T)

IF211

B–Y

( A/T

)

B–Y

( M/T

)

SCION xB (EM0091U)

43

EA111

C23C17

ED

1

4 3 2

I 2

1

2 3 4

I 3

1

2 3 4

I 4

1

2 4 3

I 5

C16 C15 C14

A12

1

B–Y

B–Y

E 3(A), E 5(C)

B–R

B–R B–R B–R

Y Y

W–B

B–R

B–R

B–R

B–R

Y

G–B

W–B Y

G–O

W–B

W–B

G–Y

G–O

G–B

G–Y

N 1

STA

IGT2 IGT3 IGT4

B–R

B–R

Y

G–R

W–B

Y

W

Y

G–R

W–B

IGT1 IGF

W–B

B–R

A30

NSW

B(A/T) B

(A/T)

Engine Control Module

Ignition Coil andIgniter No. 1




Noi

se F

ilter

( Igni

tion)

44

SCION xB (EM0091U)

Starting and Ignition

: Parts Location


A3 28 I2 29 N1 29

C5 30 I3 29 S4 A 29

E3 A 30 I4 29 S5 B 29

E5 C 30 I5 29

F8 28 I10 30

: Relay Blocks





1A 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)

1E25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)

1O25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)



EA1 34 Engine Wire and Engine Room Main Wire (Inside of Engine Room R/B)

IF135 Engine Wire and Instrument Panel Wire (Behind the Glove Box)


: Ground Points


EB 34 Front Left Fender Apron

ED 34 Engine Block

SCION xB (EM0091U)

45

Memo

46

SCION xB (EM0091U)

Charging

LBP

F

3 A

IG

2 A

5 1E

10AGAUGE

60A

MA

IN

120A

ALT

15AAM2

1

1

2

1

7 1A

1 1O

1 A1

24

B

IF1

M

IC Regulator

8 1G

6 1O

L

R–B

B–R

B–R

Y

10

IF14

E

B–R

F 8(

A), F

9( B

)

A3 B1

Battery

B

W–R

W–R

B–L

ALT

ALTY

R–B

L

LG

–B

A18

5 6

I10

B L IG M

9

E

AM2 IG2

ST2

E 5

IF111

G 1(A), G 2(B)

16

40

C 6

Cha

rge

Com

bina

tion

Met

er

Eng

ine

Con

trol

Mod

ule

Fusi

ble

Link

Blo

ck

Generator

Ignition SW

A/C

Am

plifi

er

(IG)

SCION xB (EM0091U)

47

: Parts Location


A18 30 F8 A 28 G2 B 28

C6 30 F9 B 28 I10 30

E5 30 G1 A 28

: Relay Blocks






1E

25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1G 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)

1O




IF1 35 Engine Wire and Instrument Panel Wire (Behind the Glove Box)

74

SCION xB (EM0091U)

Front Wiper and WasherM

IST

OFF INT

LO HI

Off

On

20AWIPER

1N71A2 1A5

IA12

2

1

EA

IA16IA111IA110

M

11 1N

1O2

IE

4 1 3 2

W

EW

+S

+1

+2

+B

4

5

6

7

9

8

5

B

GR–B

B B B

G

W–B

W–B

W–B

B–R GR

GR

–B B

B–R GR

GR

–B

W–B

G

Washer SW

Front Wiper SW

Wiper Relay

W 1

+2 +1 S +

E

F 7

C 9

B

B–W

Combination SW

Front Wiper Motor

Was

her

Mot

or

(IG)

M

SCION xB (EM0091U)

75

With the ignition SW turned on, the current flows to TERMINAL 8 of the front wiper and washer SW, TERMINAL 2 of thewasher motor and TERMINAL 2 of the front wiper motor through the WIPER fuse.

1. Low Speed PositionWith the front wiper SW turned to LO position, the current flows from TERMINAL 8 of the front wiper and washer SW toTERMINAL 7 to TERMINAL 1 of the front wiper motor to TERMINAL 5 to GROUND and causes the front wiper motor to runat low speed.

2. High Speed PositionWith the front wiper SW turned to HI position, the current flows from TERMINAL 8 of the front wiper and washer SW toTERMINAL 9 to TERMINAL 4 of the front wiper motor to TERMINAL 5 to GROUND and causes the front wiper motor to runat high speed.

3. INT PositionWith the front wiper SW turned to INT position, the wiper relay operates and current flows from TERMINAL 8 of the frontwiper and washer SW to TERMINAL 5 to GROUND. This activates the intermittent circuit and the current flows fromTERMINAL 8 of the front wiper and washer SW to TERMINAL 7 to TERMINAL 1 of the front wiper motor to TERMINAL 5 toGROUND and the wiper operates. Intermittent operation is controlled by a condenser charge and discharge function in therelay.

4. Mist PositionWith the front wiper SW turned to MIST position, the current flows from TERMINAL 8 of the front wiper and washer SW toTERMINAL 7 to TERMINAL 1 of the front wiper motor to TERMINAL 5 to GROUND and causes the front wiper motor to runat low speed.

5. Washer Interlocking OperationWith the washer SW pulled to ON position, the current flows from the WIPER fuse to TERMINAL 2 of the washer motor toTERMINAL 1 to TERMINAL 4 of the front wiper and washer SW to TERMINAL 5 to GROUND and causes the washer motorto run and the window washer to spray. Simultaneously, current flows from the WIPER fuse to TERMINAL 8 of the front wiperand washer SW to TERMINAL 7 to TERMINAL 1 of the front wiper motor to TERMINAL 5 to GROUND, causing the wiper tofunction.

: Parts Location


C9 30 F7 28 W1 29




1N25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)




IA1 35 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)

: Ground Points


EA 34 Front Right Fender Apron


System Outline

76

SCION xB (EM0091U)

Rear Wiper and Washer

20AWIPER

1T1 1A2

3

2

1 IA1

M

Combination SWC 9

2 53

IB22

B B

W 1

B L

L

W–L

L

W–L

W–B

W–L

W–B

W–B

2

1

5 BC1

BC16

IE

Washer Motor

Rea

r W

iper

Mot

orR

15

1N11

1O2

Washer2

ON

OFF

Washer1

Rea

r W

iper

and

Was

her

SW

(IG)

M

SCION xB (EM0091U)

77

When the ignition SW is turned on, current flows to TERMINAL 2 of the washer motor, TERMINAL 1 of the rear wiper motorthrough the WIPER fuse.

1. Rear Wiper Normal OperationWith the ignition SW turned on and rear wiper and washer SW turned to ON position, current flows to TERMINAL 1 of therear wiper motor to TERMINAL 2 of the rear wiper and washer SW to TERMINAL 5 to GROUND. Causing the rear wipermotor operated.

2. Washer OperationWith the ignition SW turned on and the rear wiper and washer SW turned to ON position, when the wiper SW is turnedfurther (ON+ washer position), current flows to TERMINAL 2 of the washer motor to TERMINAL 3 to TERMINAL 3 of therear wiper and washer SW to TERMINAL 5 to GROUND so that the washer motor rotates and the window washer emits awater, only while the switch is fully turned.When the wiper SW is off and then turned to washer position (Wiper off side), only the washer operates.

: Parts Location


C9 30 R15 33 W1 29






1T 24 Floor Wire and Instrument Panel J/B (Lower Finish Panel)





BC1 36 Back Door No.1 Wire and Floor Wire (Right Rear Side Quarter Pillar)

: Ground Points



System Outline

78

SCION xB (EM0091U)

Power Window

4 5

M

10AGAUGE

30APOWER

2 3

1 5

1O2 1L2 1S2 1L1

IC11

431 9

7

W–B

IC17

P 9

R–L

G–W

PWRRelay

W–B

L–W L

LW

–B

W–B

L L

L

L

L

L–W

2

IE

W–B

6D11Power Window Master SW

Power Window Motor Front LH

C

C

B

C

W–B

J10JunctionConnector

B B

JunctionConnector

J10

E E DDDU

Down

Front LHB

IC

B

(BAT)(IG)

SCION xB (EM0091U)

79

Dow

n

Up

5 2

3 1

R G

P10

SU SD

U D

P 6

2 1

M

2 1

M

4

IG14 IG12

Dow

n

Up

5 2

3 1

R G

P12

SU SD

U D

P 8

B44 B

P 7DU

SDSU

P11

GR

13

25

Up

Dow

n10 1613

L

4 IC1 IC12 ID12 ID11 ID14 ID13

IG11 BB14 BB13

M

5

B4

BA14 BA13

R–L

G–W R–Y

G–Y

R–B

G–B

R–B

G–B

BA1

R–B

G–B LL

L–W

L

L–W

R–L

G–W

121518

G–Y

R–Y

G–WR–L

5 5

L

R–B

G–B

BB1

D11Power Window Master SW

Pow

er W

indo

w C

ontro

l SW

Fron

t RH

Pow

er W

indo

w C

ontro

l SW

Rea

r LH

Pow

er W

indo

w C

ontro

l SW

Rea

r R

H

Power Window MotorFront RH

Power Window MotorRear LH

Power Window MotorRear RH

PU PD RLU RLD RRU RRD

Normal

Lock

Front RH Rear LH Rear RH

Window Lock SW

80

SCION xB (EM0091U)

Power Window

When the ignition SW is turned on, the current flows from the GAUGE fuse through the PWR relay to GROUND, thus thePWR relay is turned on and the current flows through the POWER fuse to TERMINAL 5 of the PWR relay to TERMINAL 3 toTERMINAL B of the power window master SW and TERMINAL B of the power window control SW front RH, Rear LH andRH.

1. Manual Operation (Power Window Master SW)When the power window master SW (Driver’s) is pushed down one step, the current flows from TERMINAL B of the powerwindow master SW to TERMINAL DD to TERMINAL 5 of the power window motor front LH to TERMINAL 4 to TERMINALDU of the power window master SW to TERMINAL E to GROUND, and the motor rotates to open the window. When thepower window master SW is pulled up one step, the current flows from TERMINAL B of the power window master SW toTERMINAL DU to TERMINAL 4 of the power window motor front LH to TERMINAL 5 to TERMINAL DD of the power windowmaster SW to TERMINAL E to GROUND, and the motor rotates in the opposite direction from open and closes the window.All the other windows are opened/closed by operating the respective power window master SW. When the window lock SWis pushed to the lock side, the ground circuit to the passenger’s window becomes open. As a result, even if Open/Closeoperation of the passenger’s window is attempted, the current from TERMINAL E of the power window master SW is notgrounded and the motor does not rotate, so the passenger’s window can not be operated and window lock occurs.

2. Auto Down Operation (Driver’s Window)When the power window master SW (Driver’s) is pushed down two steps, the power window master SW determines that it isAUTO operation and the current flows from TERMINAL B of the power window master SW to TERMINAL DD to TERMINAL5 of the power window motor front LH to TERMINAL 4 to TERMINAL DU of the power window master SW to TERMINAL E toGROUND. Because the hold circuit inside the power window master SW keeps the relay on the down side activated, thepower window motor continues operating even if the power window master SW is released. When the driver’s window is fullyopened, 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 power window master SW (Driver’s) is pulled to the up side during auto down operation, a ground circuit opens inthe power window master SW and current does not flow from TERMINAL DU of the power window master SW to TERMINALE, so the motor stops, causing auto down operation to stop. If the power window master SW is pulled continuously, the motorrotates in the up direction in manual up operation.

4. Manual Operation (Power Window Control SW Front RH, Rear LH and RH)With the power window control SW (Front RH, rear LH or RH) pulled to the up side, current flows from TERMINAL B of thepower window control SW to TERMINAL U to power window motor to TERMINAL D of the power window control SW toTERMINAL SD to TERMINAL PD, RLD or RRD of the power window master SW to TERMINAL E to GROUND and rotatesthe power window motor (Front RH, rear LH or RH) in the up direction. Up operation continues only while the power windowcontrol SW is pulled to the up side. When the window descends, the current flowing to the motor flows in the oppositedirection, and the motor rotates in reverse. When the window lock SW is pushed to the lock side, the ground circuit to thepassenger’s window becomes open. As a result, even if Open/Close operation of the passenger’s window is attempted, thecurrent from TERMINAL E of the power window master SW is not grounded and the motor does not rotate, so thepassenger’s window can not be operated and window lock occurs.

: Parts Location


D11 32 P7 33 P10 33

J10 32 P8 33 P11 33

P6 33 P9 33 P12 33



1L25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)


1S 24 Floor Wire and Instrument Panel J/B (Lower Finish Panel)

System Outline

SCION xB (EM0091U)

81



IC1 35 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)

ID1 35 Front Door LH Wire and Floor Wire (Left Kick Panel)

IG1 35 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)

BA1 36 Rear Door No.1 LH Wire and Floor Wire (Center Pillar LH)

BB1 36 Rear Door No.1 RH Wire and Floor Wire (Center Pillar RH)

: Ground Points



82

SCION xB (EM0091U)

Door Lock Control

9 IC2

10 1L

25AD/L

W–B

G–B

W–B

BR

–Y

G–B

BR

–Y

W–B

W–B

8 IC2

W–B

J 2(

A), J

3( B

)

IE

7 IC1 8 IG1

3

BR

–Y

G–B

Lock

Unl

ock

D12

W–B

3

6 5

BR

–Y

G–B

Lock

Unl

ock

D11 1

5 8

E

B B

B AE AB A E A

E B

B L1

8 IG2

D 4

9 IG2

12

L–W

BR

–Y

G–B

1 18 19

UL1

BR–Y

G–B

W–B

W–B

W–B

W–B

W–B

W–B

W–B


Doo

r Lo

ck C

ontro

l SW

Fron

t LH

Doo

r Lo

ck C

ontro

l SW

Fron

t RH

Junc

tion

Con

nect

or

CC

1P19

1L13

1

2

1P16

Y

8

Y

KSW

W–B

1O2

W–B

W–B

Unl

ock

War

ning

SW

U 1

(BAT)

C

CJunctionConnector

J10

SCION xB (EM0091U)

83

564

W–B

5 IC2 11 IC2 10 IC2 6 IC15 IC1

D 9

21

M

216

3

ACTDUL3

D 4

L–O

Unl

ock

Lock

11

L–R

Y–B

Y–G

L–R

Y–B

L–W

Y–G L–O

L–W

Y–G L–O

L–R

Y–B

Unl

ock

Det

ectio

n

LSWD

W–B

B

UL2

BL–W

J 8

L–W

22 20

L–W

D10

L–O

L–O

L–R

B

L–R

L2

L–B

L–W

L–B

6 IG1

21

5

65

M

4

Unl

ock

Lock

L–R

L–W

L–B

IG1

L–O

W–B

IG210IG211


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

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

Junc

tion

Con

nect

or

84

SCION xB (EM0091U)

Door Lock Control

M

BB1BA1

PCTY

R–W

7

4 1L

3 1S

R–W

L–O

1

1

D 6

1

D 4

ACT–

L–B

L–B

L–O

L–O

2

L–B

2

L–O

BB1

L–B

D 7

1

L–O

L–O

IB24IB21

L–B

L–O

R–W

L–B

L–B

L–O

2 BA1

R

1 1 2

1

D13 D14

L–O

L–B

1S1

1L8

523

1

D 5

R–W

R–W

D 8

R

DCTYACT+

CAAC

CAC

J 8

R–W R–W R–W


Doo

r C

ourte

sy S

WFr

ont L

H

Doo

r C

ourte

sy S

WFr

ont R

H

Doo

r C

ourte

sy S

WR

ear

LH

Doo

r C

ourte

sy S

WR

ear

RH

Door LockMotor Rear LH

Door Lock MotorRear RH

Junc

tion

Con

nect

or

M

SCION xB (EM0091U)

85

V–W

4 BC1

R–W

M

2 3

1 4

BC13

IB213

L–Y

BACT

L–Y

10L–

Y

R–W

BL

1

2

BC21

IB25

BR

–Y

BDSU

BR

–Y

17

BR

–Y

W–B

B 5

B 6

W–B

W–B

W–B

W–B

3

IB112

W–R

BKL

W–R

16

W–R

B 7

BF

ADJ

6(A)

, J 7

( B)

SPD

V–W

9

1K4

1F6

D 4

V–W

Bac

k D

oor

Cou

rtesy

SW

Bac

k D

oor

Lock

Mot

or

Bac

k D

oor

Ope

ner

SW

Buc

kle

SW

LH


Junc

tion

Con

nect

or

26

R–B

R–B

IG

LBE–

7

R–B


A 9

1

∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production

( ∗1)

5

W–R

Buckle SW LHB 9

( ∗2)

( ∗1)

Seat Position Sensor

(∗2)BC(∗1)AB

(∗1)AB(∗2)BC

Junc

tion

Con

nect

or

J 4(

A), (

B)(∗2)BD(∗1)AD

(∗1)AD(∗2)BD

Junc

tion

Con

nect

or

J 4(

A), (

B)

86

SCION xB (EM0091U)

Door Lock Control

V–W

10AGAUGE

1G13

15ADOME

1

1A4

1G12

Spe

edom

eter

29 28

23 1

IA113

V–W

W–R

W–R

L–Y

L–Y

R–B

S 3

SP1

12

C 6

2C

ombi

natio

n M

eter

Ski

d C

ontro

l EC

Uw

ith A

ctua

tor

1L3

R–B

R–B

CPU

IF

21

BR

BR

(BAT)(IG)

SCION xB (EM0091U)

87

The current always flows to TERMINAL 1 of the door lock control relay through the D/L fuse.

1. Manual Lock OperationWhen the door lock control SW or door key lock and unlock SW are operated to LOCK position, a lock signal is input toTERMINAL 18 or 20 of the door lock control relay and causes the door lock control relay to function. The current flows fromTERMINAL 1 of the door lock control relay to TERMINAL 2 to the door lock motors to TERMINALS 3 and 11 of the door lockcontrol relay to TERMINAL 12 to GROUND and the door lock motors locks the door.

2. Manual Unlock OperationWhen the door lock control SW or door key lock and unlock SW are operated to UNLOCK position, an unlock signal is inputto TERMINAL 19, 21 or 22 of the door lock control relay and causes the door lock control relay to function. The current flowsfrom TERMINAL 1 of the door lock control relay to TERMINALS 3 and 11 to the door lock motors to TERMINAL 2 of the doorlock control relay to TERMINAL 12 to GROUND and the door lock motors unlocks the door.

3. Double Operation Unlock OperationWhen the door key lock and unlock SW front LH is turned to the unlock side, only the driver’s door is unlocked. By turningthe door key lock and unlock SW front LH to the unlock side, a signal is input to TERMINAL 21 of the door lock control relay,and if the signal is input again within 3 seconds by turning the SW to the unlock side again, current flows from TERMINAL 11of the door lock control relay to the door lock motors to TERMINAL 2 of the door lock control relay to TERMINAL 12 toGROUND, causing all the other doors are unlocked.

: Parts Location


A9 30 D7 32 J3 B 31

B5 32 D8 32J4

A 31

B6 32 D9 32J4

B 31

B7 32 D10 32 J6 A 31

B9 32 D11 32 J7 B 31

C6 30 D12 32 J8 31

D4 30 D13 32 J10 32

D5 32 D14 32 S3 29

D6 32 J2 A 31 U1 31

: Relay Blocks






1F


1G

25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1K

25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1L


1O

1P


System Outline

88

SCION xB (EM0091U)

Door Lock Control




IB135 Floor Wire and Instrument Panel Wire (Behind the Reinforcement LH)


IC135 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)


IG135 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)




BC136 Back Door No.1 Wire and Floor Wire (Right Rear Side Quarter Pillar)

BC236 Back Door No.1 Wire and Floor Wire (Right Rear Side Quarter Pillar)

: Ground Points



IF 35 Instrument Panel Brace LH

BL 36 Back Door Center

SCION xB (EM0091U)

89

Memo

90

SCION xB (EM0091U)

Wireless Door Lock Control

10 1L

25AD/L

10AGAUGE

1L3

564

W–B

W–B

W–B

5 IC2 11 IC2 10 IC2 6 IC15 IC1

D 9

21

M

IE

216

7 IC1

3

EB ACTDUL3

D 4

L–O

Unl

ock

Lock

1112

L–R

Y–B

Y–G

L–R

Y–B

L–W

Y–G L–O

L–W

Y–G L–O

L–R

Y–B

R–B

L–W

26 1

IG

W–B

Unl

ock

Det

ectio

n

W–B

LSWD



L–W

W–B

C

C

W–B

JunctionConnector

J10

R–B

(BAT) (IG)


(∗2)BC(∗1)AB

(∗1)AB(∗2)BC

JunctionConnector

J 4(A), (B)

SCION xB (EM0091U)

91

8 IG1

D 4

W–B

W–B

B

UL2

BL–W

J 8

L–W

22 20L–

W

D10

L–O

L–R

B

L–R

L2L–

W

L–B

6 IG1

21

5

65

M

4

Unl

ock

Lock

L–R

L–W

L–B

IG1

L–O

IG210IG211



Junc

tion

Con

nect

or

M

BB1BA1

L–O

1

ACT–

L–B

L–B

L–O

L–O

2

L–B

2

L–O

BB1

L–B

L–O

L–O

IB24IB21

L–B

L–O

L–B

L–B

L–O

2 BA1

1 1 2

1

D13 D14

L–O

L–B

23

ACT+

CAAC

CAC

J 8

Door LockMotor Rear LH


Junc

tion

Con

nect

or

M

L–O

W–B

92

SCION xB (EM0091U)


4 BC1

PCTY

R–W

7

4 1L

3 1S

R–W

1

D 6

1

D 4

D 7

1

R–W

R

1S1

1L8

5

1

D 5

R–W

R–W

D 8

R

DCTY

R–W

M

2 3

1 4

BC13

L–Y

L–Y

R–W R–W R–W

BL

W–B

B 5

W–B

W–B

W–B

Bac

k D

oor

Cou

rtesy

SW

Bac

k D

oor

Lock

Mot

or


Doo

r C

ourte

sy S

WFr

ont L

H

Doo

r C

ourte

sy S

WFr

ont R

H

Doo

r C

ourte

sy S

WR

ear

LH

Doo

r C

ourte

sy S

WR

ear

RH

IB213

BACT

L–Y

10

SCION xB (EM0091U)

93

IB23

LP

R–Y

4

1

2

Y

KSW

Y

8

U 1

W–B

1A4

1S5

1P16

D 4Door Lock Control Relay

Unl

ock

War

ning

SW

15ADOME

1

1

2

OFF

ON

DO

OR

L–Y

R–Y

L–Y

1L7

5

L–Y

RDA

L

25

PRG

V

24

2 3

+B RDA PRG

1L13

1P19

Door Control ReceiverD 3

Inte

rior

Ligh

tI1

4

2

1

W–B

1P15

1O2

IE

W–B

GND

G–O

HAZ

G–O

15

1H1

1G10

8

EHW

1J4

FLSH Relay

(BAT)

94

SCION xB (EM0091U)


D 4Door Lock Control Relay

HORN

W–R

23

1

1

15AHORN

1

G–W

2

2 3

1 5

IA14

1

1

1 1

G–R

G–R

G–W

W–R

Horn(Low)

H 5Horn(High)

H 4

W–R

HORNRelay

JunctionConnector

J 4(A), (B)

HRLY

R

13

10AH–LP RH/H–LP LO RH

1

B

2

B

1 2

3

IA25

2 5

1 3

1A9

B–W

1A8

1M7

IG

W–B

B–Y

AB

BB

HeadlightRH

H 2

JunctionConnector

J 6(A), J 7(B)

H 6HeadlightRelay

B–W

B

B–R

1 2

3

B–W B–Y

HeadlightLH

H 1

10AH–LP LH/H–LP LO LH

1

2

R

B–W

(BAT)

(BAT)(BAT)


(∗2)BB(∗1)AC

(∗1)AC(∗2)BB

SCION xB (EM0091U)

95

Door lock control (Lock and unlock) and panic control (Theft alarm and flash) is performed by remote control, without theignition SW at OFF, using low–power electrical waves emitted by a transmitter.

1. Wireless Door Lock or Unlock Normal OperationWith the ignition SW at OFF (Unlock warning SW off) and all the doors completely closed, when the lock or unlock button(Transmitter) is pushed, the wireless door lock control receiver receives the electrical waves from the transmitter, and sendsa signal to the door lock control relay causing it to operate.As a result, the door lock control relay judges whether the door is locked or unlocked based on the signal from the door lockmotor and door unlock detection SW, and sends a signal to switch the condition from lock to unlock or vice versa, causingthe door lock motor to operate.

2. Visual Confirmation of Lock or UnlockIf all doors indicate that they are locked after the lock command, parking lights and hazard lights will flash once. If any doorindicates that it is open after the unlock command, parking lights and hazard lights will flash twice.

3. Wireless Door Unlock OperationPushing the unlock button (Transmitter) once, driver’s door is unlocked. Furthermore, pushing the button again within 3seconds, the other doors are unlocked.

4. Automatic Lock OperationWith 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 beautomatically relocked.

5. Wireless Control Stop FunctionIf a door is open (Door courtesy SW on), a signal is input from the door courtesy SW to the door lock control relay stoppingwireless 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 doorlock control relay stopping wireless door lock or unlock.

6. Repeat FunctionIn case an appropriate lock detection signal is not received after outputting a lock signal when pushing the lock button(Transmitter), 2 seconds later, the door lock control relay output the lock signal again.

7. Remote Panic OperationPanic 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 hazard lights flash. Then, the panic or the unlock button (Transmitter) is pushed oncemore, sounding and flashing will stop. Panic will not function when ignition SW at ON.

: Parts Location


B5 32 D10 32 I14 32

D3 30 D13 32J4

A 31

D4 30 D14 32J4

B 31

D5 32 H1 28 J6 A 31

D6 32 H2 28 J7 B 31

D7 32 H4 28 J8 31

D8 32 H5 28 J10 32

D9 32 H6 30 U1 31

: Relay Blocks



System Outline

96

SCION xB (EM0091U)





1G


1H


1J

25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1L 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)

1M


1O

1P




IA135 Engine Room Main Wire and Instrument Panel Wire (Behind the Reinforcement LH)










: Ground Points



IG 35 Right Kick Panel


SCION xB (EM0091U)

97

Memo

98

SCION xB (EM0091U)

ECT and A/T Indicator

15AEFI

1

10ASTOP

1B8

60A

MA

IN

15AAM2

1

1

2

1

B1O1

1A7

6 1O

2 3

1 5

1 1

1

W–R

1

W–R

A1

+B

1A11

1H8

EB

A3 B17

1P3

1H14

IE

7. 5AOBD

1P4

IA114

1P17

1O2

1

2

1B2

1P13

B4

IF1

CG

BR

BR

BR

BR

BR

ECE02E03

22 A

ED

6 C4 D

4

2

ODMS

6 B

7 1P

5 4

1 1E

16

W–R

BAT

TC

13

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

15

P–B

B–Y

B–Y

EFIRelay

Battery

B–L

B–R

B–Y

W–B

W–B

W–B

W–B

G–Y

G–R

S 8

G–W

STP

5 6

I10

W–B

BATT TC

AM2 IG2

ST2

2

3

F 8

A30

NSW

4

B

1O7

BB

1H2

SG

A12

STA

BR

A 7

EC

P

N

9

B

6

1E6

B

B–Y

BR

W–B

B–Y

G–B

BR

BR

E1

3 C7 C

E01B

R

A 3

BR

BR

P–B

B–R

1G8

B–R

IF113

B

B–Y

Par

k/N

eutra

lP

ositi

on S

W

O/D

Mai

n S

W


Fusi

ble

Link

Blo

ck

Ignition SW

StopLight SW

D 1Data LinkConnector 3

(BAT)(BAT)(BAT)

A8

MREL

IA27

GR

GR

GR

CANL CANH

14 6

IF24

IF211

A2

+B2

B–R

B–R

IG

W

B

SCION xB (EM0091U)

99

D24D11D13D12D19D8D9

5 10 2 3 8 4 1

S1 S2 ST SLT+ SLSLT– THO1

W–G

W–R

B–R

W–L W G Y–G

D35 D27

2

1 3

C18 C20C28 C32

E 1

R B

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

NT+ NT–

E2 VC VTA THW

R–W Y–R R–L

BR

BR

BR

BR

T 1

S2S1 ST SLT+ OTSLT–

B Y G LG

O

GR

O

6

E2

B8

SPD

B14

ODLP

1H3

1F6

G–O

V–W

V–W

G–O

B11B21B10B9

G–W

SL

BR

RD2L

WB–RB–R

R–WR–Y

G–R

G–W

G–R

R–Y

R–W

1

2

T 2

Electronically ControlledTransmission Solenoid


ThrottlePosition Sensor

Turb

ine

Spe

ed S

enso

r

VTA

E2

VC

B33 B34

CANH CANL

Skid Control ECU with ActuatorS 3

CANL CANH SP1

IA212 IA21 IA113

121125

W–RBW

B W

BA

A B B A

BW

W

BW–R

JunctionConnector

J 5

1

2

Eng

ine

Coo

lant

Tem

p.

Sen

sor

E 2

100

SCION xB (EM0091U)


RB

R–B

J 6(

A), J

7( B

)

A 3

R

R–W

G–W

G–W

G–R

R

G–R

E B

E A

B–R

IF1

R–W

R–Y

G–R

G–W

2912

231110987640

13 1H 16 1H

O/D

OFF

B–R

1H

2

3

NL DL

G–O

V–W

G–O

IF1

R–W

5 1E

10AGAUGE

IF19R

–W

75

PL

V–W

1G13

R–B

R–B

R–B

R–B

1

LL

IF116

GR

4

8

2L

4

RL

Spe

edom

eter

1H6

GR

819

1 1G

1E2

G–W

G–R

R–Y

G–WR G

R–Y

18 1G17 1G16 1G

3 1E4 1E9 1E

5 IF16 IF1

GR

G–W

R–Y

G–R

R–Y

R–WR

R–Y

IF17

C 6

A/T Indicator Light SW

Combination Meter

Junc

tion

Con

nect

orP R N D 2 L

BR

21

IF

CPU

(IG)

V–W

28

W–R

W–R

(∗2)BD(∗1)AD

(∗1)AD(∗2)BD

JunctionConnector

J 4(A), (B)


SCION xB (EM0091U)

101

Previous automatic transaxle have selected each gear shift using the mechanically controlled throttle hydraulic pressure,governor hydraulic pressure and lock–up hydraulic pressure. The electronically controlled transmission, however, electricallycontrols the line pressure and lock–up pressure etc., through the solenoid valve. Engine control module controls eachsolenoid valve based on the input signals from each sensor, which makes smooth driving possible by shift selection for eachgear that is most appropriate to the driving conditions at that time.

1. Gear Shift OperationDuring 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 theinput signals to TERMINAL NT+ of the engine control module from the turbine speed sensor devoted to the direct clutch.Current is then output to the electronically controlled transmission solenoid. When shifting to 1st gear, current flows fromTERMINAL S1 of the engine control module to TERMINAL 5 of the electronically controlled transmission solenoid toGROUND, and from TERMINAL S2 of the engine control module to TERMINAL 10 of the electronically controlledtransmission solenoid to GROUND, and continuity to solenoids No.1 and No.2 causes the shift.For the 2nd gear, current flows from TERMINAL S1 of the engine control module to TERMINAL 5 of the electronicallycontrolled transmission solenoid to GROUND, and continuity to the solenoid No.1 causes the shift.For the 3rd gear, there is no continuity to either No.1 or No.2 solenoid.Shifting into 4th gear (Overdrive) takes place when current flows from TERMINAL S2 of the engine control module toTERMINAL 10 of the electronically controlled transmission solenoid to GROUND, and continuity to the solenoid No.2 causesthe shift.

2. Lock–Up OperationWhen the engine control module judges from each signal that lock–up operation conditions have been met, current flowsfrom TERMINAL SL of the engine control module to TERMINAL 4 of the electronically controlled transmission solenoid toGROUND, causing continuity to the lock–up solenoid and causing lock–up operation.

3. Clutch Pressure ControlThe electronically controlled transmission solenoid is controlled by the current from TERMINAL SL of the engine controlmodule, and controls the accumulator hydraulic pressure.As a result, the clutch to hydraulic pressure is adjusted precisely, and allows stable shift change.

4. Line Pressure ControlThe electronically controlled transmission solenoid is controlled by the current from TERMINAL SLT+ of the engine controlmodule, and controls the throttle hydraulic pressure.As a result, the line pressure can be controlled precisely, and the to hydraulic pressure is adjusted according to the shiftchange condition, and allows smooth shift change.

5. Shifting Control in Uphill/Downhill TravelingThis system determines whether the vehicle is traveling on an incline or decline from the throttle opening angle, vehicleacceleration condition and brake pedal operation, and controls the shift up to O/D to allow smooth driving.

6. Clutch to Clutch ControlWhen shifting from the 3rd gear to the 4th gear, the current from the engine control module TERMINAL ST controls theelectronically controlled transmission solenoid, to control the drain orifice hydraulic pressure (Switch orifice). Theelectronically controlled transmission solenoid is also controlled by the current from the engine control module TERMINALSLT+, to adjust the hydraulic pressure precisely, which ensures smooth shifting.

7. Stop Light SW CircuitIf the brake pedal is depressed (Stop light SW on) when driving in lock–up condition, a signal is input to TERMINAL STP ofthe engine control module, the engine control module operates and continuity to the lock–up solenoid is cut.

8. 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 ispushed while the O/D is off, a signal is input into TERMINAL ODMS of the engine control module, and the O/D is turnedon by the engine control module. In this case, the engine control module controls the gear shift according to the vehicle’sdriving condition, using the O/D range. At this time, the O/D off indicator light is off.

∗ Overdrive offWhen the O/D main SW is pushed while the O/D is on, a signal is input into TERMINAL ODMS of the engine controlmodule, and the O/D is turned off. At this time, the current flows through the O/D off indicator light to TERMINAL ODLP ofthe engine control module. As a result, the O/D off indicator light turns on, and the engine control module controls the gearshift according to the vehicle’s driving condition, without using the O/D range.

System Outline

102

SCION xB (EM0091U)


: Parts Location


A3 28 E4 B 30 J5 31

A7 30 E5 C 30 J6 A 31

C6 30 E6 D 30 J7 B 31

D1 30 F8 28 S3 29

E1 28 I10 30 S8 31

E2 28J4

A 31 T1 29

E3 A 30J4

B 31 T2 29

: Relay Blocks






1B24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)

1E


1F

25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1G

25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1H


1O

1P







: Ground Points



EC34 Engine Block

ED34 Engine Block




SCION xB (EM0091U)

103

Memo

104

SCION xB (EM0091U)

ABS, TRAC and VSC

ST2

IG2AM2 65

60A

MA

IN

13 IA1IA116 9

3 2

5 1

5 2

3 1

120A

ALT

2

MR

2

15

2 2

2 2 2

14

2

MRF

EB

GND1 GND2

45 31

32 1

R+ +BS

IA2

2

5

IG

CSW

43

BM

2T

3

12

SP1

28

PKB

S 3

P 3

AB

S C

UT

Rel

ay

AB

S M

TRR

elay

Battery

W–R

B W–L B

W–L

W–B

W–B

W–R

BRB–RL

B R

R

W–B

B–W B

B–W

W–B

B

F 8

W–R

1

40A

AB

S N

O. 1

1

1

2

54

W–B

34

B–R

B–R

W–B

W–B

IND

Fusi

ble

Link

Blo

ck

Par

king

Bra

ke S

W

Skid Control ECU with Actuator

TRA

C O

FF S

W

B–L

1

15A

AM

2

1

1

2

3

1A7

1O1

W–R

W–R

B

Ignition SWI10

R–B

B

40

P

R

20 IA2

IF116

BE

AE

P

3

1

B

RR

R

Junc

tion

Con

nect

or

J 6(

A), J

7( B

)

A/T

Indi

cato

rLi

ght S

W

A 3

1

60A

AB

S

SCION xB (EM0091U)

105

B–L

A 5

BR

–Y

17

FR–

2

1

1

IA2

1

2

1

2

IE15 IE12

6

FL–

5 19 4

RR+ RR–

W–R

P

R–Y

A16

44

BRL

29

WA

35

WT

36

VSCW

11

CANH

25

CANL

30

BZ

10

NEO

27

STP

NEO

7

G–W

R–W

W

S 3

BR–W

B

B–W

W–R

R G

LG–B

LG–R

18

FL+

LG–B

LG–R V

V

G–WB W

R–W

BR

–W

R–YP

B–W

IA2

W

R–W

1P10

9 1B

RRW

1B5

1P5

J 4(

A), (

B)

W

SIL WFSE CANL CANH

7 15 14 6

BB

W W

13

D 1

D/G

42

WFSE

RBY

A15

RL–RL+

620

3 IE17 IE1

2

1

FR+

3

BR

Y B

A 4

W–B

B–L

B–R

IA2IA2 22

B–R

IG1

12

46

W–B

B

AB

S S

peed

Sen

sor

Fron

t LH

AB

S S

peed

Sen

sor

Fron

t RH

AB

S S

peed

Sen

sor

Rea

r LH

AB

S S

peed

Sen

sor

Rea

r R

H

Data Link Connector 3

Junc

tion

Con

nect

or


R–B

BB

R–BIF19 R–B

IA29

R–L

TS

12

24

TS

R–L

33

CANH

34

CANL

B W

B

W

Engine Control ModuleE 4

(∗2)BE(∗1)AE

(∗1)AE(∗2)BE


106

SCION xB (EM0091U)

ABS, TRAC and VSC

G–W

IB1 714

A

B A

B

7. 5AECU–B

1R6

BK

A B

1 3 2 3 5

2

2

1

9 10 1

B–R

V 2

R–W

BATIG

S 7

CANL

W

B

BR–W

R–Y

P

B–W

W–R

BR–W

R–Y

P

B–W

W–R

WBBWW–B

R–W

W

W–B

B

W–B

W–B

W B B–L

W–R

B–L

B–L

W–R

CANH IG

ESS CANL CANH GND

Buz

zer

IB1

A B

W

B

B W

B

B–R

SteeringSensor

VS

C B

uzze

r

1

G–W

B–L

Sto

p Li

ght S

W

B–L

2

11 1H3 1B

7. 5AECU–IG

B–L

G–R

G–Y

S 8

1 1B

2 1B

8 1B

10ASTOP

B–L

BB

R–BR–B

IE14

BI

W–B

BH

W–B

BB16BA16

W–B

W–B

W–B

B–L

(IG) (BAT) (BAT)

JunctionConnector

J 5

A B

Yaw RateSensor

Y 1B W

B

W

SCION xB (EM0091U)

107

IA2 IA1

1A

10

B–R

5

B–R

21 IA2

3 1G

10AGAUGE

1G13

P

11

4 19 37 38 28

23C 6

BR–W

R–Y

P

B–W

W–R

B–W

B–R

BR

–W

R–Y P

B–W

W–R

R–B

IA2

21

BR

IF

BR

BR

–W

R–Y

5

1

Combination Meter

B

1O6

1G8

B–R

40

TRA

C O

FF

VS

C

AB

S

Bra

ke

Slip

Spe

edom

eter

15ADOME

1

1

L–Y

2

1A4

1G12

L–Y

B

CPU

R–B

1E5

R–B

(BAT)(IG)

108

SCION xB (EM0091U)

ABS, TRAC and VSC

1. ABS OperationIf the brake pedal is depressed suddenly, the ABS controls the hydraulic pressure of the wheel cylinders for all the fourwheels to automatically avoid wheel locking and ensure the directional and steering stability of the vehicle. If the brake pedalis depressed suddenly, the skid control ECU with actuator controls the solenoids in the actuators using the signals from thesensors to move the brake fluid to the reservoir in order to release the braking pressure applied to the wheel cylinder. If theskid control ECU with actuator detects that the fluid pressure in the wheel cylinder is insufficient, the skid control ECU withactuator controls the solenoids in the actuators to increase the braking pressure.

2. Traction Control OperationThe traction control system controls the engine torque, the hydraulic pressure of the driving wheel cylinders, slipping of thewheels which may occur at start or acceleration of the vehicle, to ensure an optimal driving power and vehicle stabilitycorresponding to the road conditions.

3. VSC OperationUnexpected road conditions, vehicle speed, emergency situation, and any other external factors may cause large under– orover–steering of the vehicle. If this occurs, the VSC system automatically controls the engine power and wheel brakes toreduce the under– or over–steering.To reduce large over–steering :If the VSC system determines that the over–steering is large, it activates the brakes for the outer turning wheels dependingon the degree of the over–steering to produce the moment toward the outside of the vehicle and reduce the over–steering.To reduce large under–steering :If the VSC system determines that the under–steering is large, it controls the engine power and activates the rear wheelbrakes to reduce the under–steering.TRAC OFF SWThe traction control SW is used to stop the TRAC function. After the engine is started, the TRAC system is stopped (turnedoff) and the TRAC OFF indicator light lights up. When the TRAC OFF SW is pressed again, the TRAC system enters thestand–by mode. If the engine is stopped and restarted, the TRAC system enters the stand–by mode regardless of thetraction control SW.VSC system cannot cut off by using TRAC OFF SW.

4. Mutual System ControlTo efficiently operate the VSC system at its optimal level, the VSC system and other control systems are mutually controlledwhile the VSC system is being operated.Engine throttle controlThe engine power does not interfere with the VSC brake control by controlling the opening of the throttle and reducing theengine output.Engine control and electronically controlled transmission controlThe strong braking force does not interfere with the braking force control of the VSC system by turning off the accel. andreducing changes in the driving torque at shift–down.VSC system operation indicationThe Slip indicator light flashes and the buzzer sounds intermittently to warn the driver that the current road is slippery, whilethe VSC system is being operated.

5. Fail Safe FunctionIf an error occurs in the skid control ECU with actuator, sensor signals, and/or actuators, the skid control ECU with actuatorinhibits the brake actuator control and inputs the error signal to the engine control module. According to the error signal, thebrake actuator turns off the solenoid and the engine control module rejects any electronically controlled throttle open requestfrom the VSC system. As a result, the vehicle functions regardless of the ABS, TRAC, and VSC systems.

: Parts Location


A3 28 F8 28 S3 29

A4 28 I10 30 S7 31

A5 28J4

A 31 S8 31

A15 32J4

B 31 T3 31

A16 32 J5 31 V2 31

C6 30 J6 A 31 Y1 31

D1 30 J7 B 31

E4 30 P3 31

System Outline

SCION xB (EM0091U)

109

: Relay Blocks



2 23 ABS R/B (Engine Compartment Right)





1E


1G

25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1H

25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1O


1P

1R






IE1 35 Engine Room Main Wire and Floor Wire (Left Side of Cowl Panel)




: Ground Points





BH 36 Rear Door LH

BI 36 Rear Door RH

BK 36 Rear Quarter Panel Inner RH

110

SCION xB (EM0091U)

Multiplex Communication System – CAN

11

7. 5AECU–IG

1R

7. 5AECU–B

6

Y 1

W–R

A

A

B

B

W B W B

W BBW

1H

W–R

W–B

B W B–L

W–B

B A

B A

IG

3

2

3 2 5

1

9 10

GND

CANL CANH

1

BAT

ESS

CANH CANL IG

S 7

J 5

BK

Junc

tion

Con

nect

or

Ste

erin

g S

enso

r

Yaw Rate Sensor

B–L

IA212 IA21

W B

14 6 25 11

CANL CANH CANL CANH


S 3Skid Control ECUwith Actuator

B–L

1B3

B–L

IE14IB114IB17

IG

W–B

BH BI

W–B

W–B

6 BA1 BB16

W–B

W–B

W–B

(IG)(BAT)

B W

33 34

CANH CANL

E 4Engine Control Module

A B

A B

8 9

CANH CANL

A/C AmplifierA17

B W


BF

BF

JunctionConnector

J 4(B)

( ∗1)

( ∗1)

W–R

( ∗2)

W–R

( ∗2)

SCION xB (EM0091U)

111

Multiplex communication system (CAN) uses a serial communication protocol and communicates with a differential voltage.In this network system, TERMINALS CANH and CANL are used for communication between the ECUs and sensors, andexcellent data communication speed and communication error detecting facility are provided.

This system is working for the following systems:∗ ABS∗ Air Conditioning∗ Electronically Controlled Transmission and A/T Indicator∗ Engine Control∗ TRAC∗ VSC

: Parts Location


A17 30 J4 B 31 S7 31

D1 30 J5 31 Y1 31

E4 30 S3 29



1B 24 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)

1H25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)

1R25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)





IE1 35 Engine Room Main Wire and Floor Wire (Left Side of Cowl Panel)



: Ground Points



BH 36 Rear Door LH

BI 36 Rear Door RH


System Outline

112

SCION xB (EM0091U)

Memo

SCION xB (EM0091U)

113

SRS (Before Dec. 2005 Production)

NOTICE: When inspecting or repairing the SRS, perform service in accordance with the following precautionary instructionsand the procedure, and precautions in the Repair Manual applicable for the model year.

Malfunction symptoms of the SRS are difficult to confirm, so the DTCs become the most important source of informationwhen troubleshooting. When troubleshooting the SRS, always inspect the DTCs before disconnecting the battery.

Work must be started more than 90 seconds after the ignition SW is turned to the ”OFF” position and thenegative (–) 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 fromdisconnecting the negative (–) terminal cable of the battery, the SRS may deploy.)

When the negative (–) terminal cable is disconnected from the battery, the memory of the clock and audio system will becleared. So before starting work, make a record of the contents in the audio memory system. When work is finished,reset the audio systems as they were before and adjust the clock. Some vehicles have power tilt steering, powertelescopic 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 these memory contents. So when the work is finished, it will benecessary to explain it to your customer, and ask the customer to adjust the features and reset the memory. To avoiderasing the memory in each system, never use a back–up power supply from outside the vehicle.

Before repair, remove the airbag sensor if shocks are likely to be applied to the sensor during repair.

Do not expose the following parts directly to hot air or flame;

Even in cases of a minor collision where the SRS does not deploy, the following parts should be inspected;

Never use SRS parts from another vehicle. When replacing parts, replace with new parts.

For the purpose of reuse, never disassemble and repair the following parts.

If the following parts have been dropped, or have cracks, dents and other defects in their case, bracket, and connector,replace with new one.

Use a volt/ohmmeter with high impedance (10 kΩ/V minimum) for troubleshooting electrical circuits of the system.

Information labels are attached to the periphery of the SRS components. Follow the instructions of the notice.

After work on the SRS is completed, check the SRS warning light.

If the vehicle is equipped with a mobile communication system, refer to the precaution in the IN section of the RepairManual.

∗ Steering wheel pad∗ Front passenger airbag assembly∗ Seat belt pretensioner∗ Center airbag sensor assembly∗ Front airbag sensor assembly

114

SCION xB (EM0091U)


7 1A

1 1O

15AAM2

1

1

2

1

60A

MA

IN

3

1O6

1D5

B5

1 2 34 421

B16 B17 B10 B11

3

1D2 1D3

1O2

B28 B27

Bat

tery

B–L

W–R

W–R

B–O

A 9(A), A10(B), A11(C)

I10

R–B

E2 E1 D2+ D2– P+

IG2

P–

Y–V

Y–O

Y–R

Y–G

W–B

W–B

W–B

A13 A12

5 6AM2 IG2

ST2

F 8

IE

P2+P+ P–

14

D2+D+ D–

B

Y–G

R

Y–P

P2–P2+

D2–

7

W–B

8

C 6

13

Y

P2–

1

2

B BC8

D–

B

B

D+

Y–B

RBE+

23

SR

S

B

10AGAUGE

1G13

B–Y

21 34

B–O

Airbag Squib (Front Passenger' sAirbag Assembly)

Airbag Squib(Steering Wheel Pad)

Airbag Sensor Assembly

Com

bina

tion

Met

er

Fusi

ble

Link

Blo

ck

Ignition SW

BR

1A4

1G12

L–Y

L–Y

15ADOME

1

2

CPU

C12

W–B

RBE–

Buc

kle

SW

RH

B 8

B3

1G7

1D8

B–Y

LA

IF

1

BR

L–Y

(BAT)(IG)

1G8

40

B–R

SCION xB (EM0091U)

115

F 1

21

A2 A1

PL+ PL–

Y–B Y

P13

21

C5 C6

PR+ PR–

Y–B Y

P14

22 B

12

BR

1P3

1D4

1P5

1D1

B19 B12

TC SIL

13 7

D 1

P–B W

P–B W

W–R

B9

BR

W–R

–SL

B20

+SL

3 IA3 IA324 IA3 IA31

+SR –SR

B–W

BR

–W

B–W

BR

–W

2 1

GSW2

F 2

TC SIL

A 9(A), A10(B), A11(C)

26 BB15

BB

32

E 4 B 7

4

L–Y

A3

LSP+

5

LG–B

A8

LSP–

2

G–W

A11

LBE+

1

R–B

A7

LBE–

1H10

1D9

F/PS

Seat Position Sensor


Data LinkConnector 3


Front AirbagSensor LH

Front AirbagSensor RH

Pretensioner LH Pretensioner RH

Buckle SW LH

Seat PositionSensor

3

W–R

Com

bina

tion

Met

er

116

SCION xB (EM0091U)


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, the current from the ignition SW flows to TERMINAL (B) 5 of the airbag sensorassembly.If an accident occurs while driving, when the frontal impact exceeds a set level, the current from the ignition SW flows toTERMINALS (B) 14, (B) 16, (B) 10, (B) 8, (A) 2 and (C) 5 of the airbag sensor assembly to the airbag squibs and thepretensioners to TERMINALS (B) 13, (B) 17, (B) 11, (B) 7, (A) 1 and (C) 6 of the airbag sensor assembly to TERMINAL (B)27, (B) 28 or BODY GROUND to GROUND, so that current flows to the airbag squibs and the pretensioners and causesthem 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 frontpassenger.The pretensioners make sure of the seat belt restrainability.

: Parts Location


A9 A 30 B8 32 F8 28

A10 B 30 C6 30 I10 30

A11 C 30 D1 30 P13 33

A12 30 E4 30 P14 33

A13 30 F1 28

B7 32 F2 28

: Relay Blocks






1D


1G

25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1H 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)

1O


1P




: Ground Points




System Outline

SCION xB (EM0091U)

117

SRS (From Dec. 2005 Production)

NOTICE: When inspecting or repairing the SRS, perform service in accordance with the following precautionary instructionsand the procedure, and precautions in the Repair Manual applicable for the model year.

Malfunction symptoms of the SRS are difficult to confirm, so the DTCs become the most important source of informationwhen troubleshooting. When troubleshooting the SRS, always inspect the DTCs before disconnecting the battery.

Work must be started more than 90 seconds after the ignition SW is turned to the ”OFF” position and thenegative (–) 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 fromdisconnecting the negative (–) terminal cable of the battery, the SRS may deploy.)

When the negative (–) terminal cable is disconnected from the battery, the memory of the clock and audio system will becleared. So before starting work, make a record of the contents in the audio memory system. When work is finished,reset the audio systems as they were before and adjust the clock. Some vehicles have power tilt steering, powertelescopic 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 these memory contents. So when the work is finished, it will benecessary to explain it to your customer, and ask the customer to adjust the features and reset the memory. To avoiderasing the memory in each system, never use a back–up power supply from outside the vehicle.

Before repair, remove the airbag sensor if shocks are likely to be applied to the sensor during repair.

Do not expose the following parts directly to hot air or flame;

Even in cases of a minor collision where the SRS does not deploy, the following parts should be inspected;

Never use SRS parts from another vehicle. When replacing parts, replace with new parts.

For the purpose of reuse, never disassemble and repair the following parts.

If the following parts have been dropped, or have cracks, dents and other defects in their case, bracket, and connector,replace with new one.

Use a volt/ohmmeter with high impedance (10 kΩ/V minimum) for troubleshooting electrical circuits of the system.

Information labels are attached to the periphery of the SRS components. Follow the instructions of the notice.

After work on the SRS is completed, check the SRS warning light.

If the vehicle is equipped with a mobile communication system, refer to the precaution in the IN section of the RepairManual.

∗ Steering wheel pad∗ Front passenger airbag assembly∗ Seat belt pretensioner∗ Center airbag sensor assembly∗ Front airbag sensor assembly

118

SCION xB (EM0091U)


7 1A

1 1O

15AAM2

1

1

2

1

60A

MA

IN

3

1O6

Bat

tery

B–L

W–R

W–R

I10

R–B

5 6AM2 IG2

ST2

F 8

C 6

23

B

10AGAUGE

1G13

21

Com

bina

tion

Met

er

Fusi

ble

Link

Blo

ck

Ignition SW

(IG)

1G8

40

B–R

SR

S

CPU

3335

1L3

15ADOME

B

IB113

BB

R–B

G–W

O

B–R

R–B

1D5

B21

1 2 34 421

B8 B7 B4 B3

3

B–O

D2+ D2– P+

IG2

P–

Y–V

Y–O

Y–R

Y–G

A13 A12

P2+P+ P–

5

D2+D+ D–

B

Y–G

R

Y–P

P2–P2+

D2–

216

Y

P2–

B B

D–

B

D+

Y–B

B–Y

34

Airbag Squib (Front Passenger' sAirbag Assembly)


B14

1G7

1D8

B–Y

LA

IF

BR

1

2

1

L–Y

L–Y

12 1G

4 1A

(BAT)

BR

Airbag Sensor AssemblyA19(A), A20(B), A21(C)

SCION xB (EM0091U)

119

23 BB13 B17

G–W R

PAONPBEW P–AB

GR

1

P–AB

6 3

2

IND PAON

JunctionConnector

J 4(B)

B

Passenger' s Seat Belt/Airbag Indicator (ON/OFF)

BC

BC

Passenger Seat BeltWarning Lamp

P15

BB

R–B

G–W

O

R–B


O

1D3

1O2

B25

E1

W–B

W–B

21

A2 A1

PD+ PD–

Y–B Y

P13

21

C4 C5

PP+ PP–

Y–B Y

P14

22 B

1P3

1D4

1P5

1D1

B15 B16

TC SIL

13 7

D 1

P–B W

P–B W

GSW2TC SIL

IE

BB

32

E 4

1H10

1D9

F/PS

Data LinkConnector 3 Engine Control

Module


1D2

B26

E2

W–B

1H12

W

120

SCION xB (EM0091U)


B 9

3

G–W

A11

DBE+

2

R–B

A12

DBE–

Seat Position SensorBuckle SW LH

4

BK

W–B

BGND

RBE+

1

BSWFSR+ FSR–

RBE–

2

+BIG GND

B10Buckle SW RH

DIA7. 5AECU–B

1R6

(BAT)

J 4(B)JunctionConnector

B

F B

F

W–R

IB16

W–R

W–RB GR

B

C12

FSP+

C13

FSP–

O 5(A), O 6(B)Occupant Classification ECU

O P

IB111 IB15

W W–B

W–B

W–B

IE

2 1O

11 1K

A5A9A3A2A4A8A1A7

W

Y

F16

12

BW

B29

BW

–SL

B27

+SL

3 IA3 IA324 IA3 IA31

+SR –SR

W B

W B

2 1

F17

28 BB30

1

L–Y

A14

DSP+

6

LG–B

A13

DSP–




W

LSP+ LSP– LBE+ LBE– E

SCION xB (EM0091U)

121

SGD2

SVC2

SVC2

SGD2

SIG2

SIG2

SGD4

SVC4

SVC4

SGD4

SIG4

SIG4

Occupant ClassificationSensor Rear RH

O10Occupant ClassificationSensor Front RH

O 8

B4B10B6B2B8B12

321321

BRRVOLW

SGD1

SVC1

SVC1

SGD1

SIG1

SIG1

SGD3

SVC3

SVC3

SGD3

SIG3

SIG3

O 9Occupant ClassificationSensor Rear LH

Occupant ClassificationSensor Front LH

O 7

B3B9B5B1B7B11

321321

WYGRGSBR

Occupant Classification ECUO 5(A), O 6(B)

122

SCION xB (EM0091U)


∗ The system reaches an ignition judgment to deploy the following device based on the signals received from the frontairbag sensor and deceleration sensor.– Driver Airbag– Front Passenger Airbag– Seat Belt Pretensioner

∗ The dual–stage SRS airbag system has been used for the driver and front passenger airbags. This system controls theoptimal airbag inflation by judging the extent of impact, seat position (driver seat), whether or not the seat belt is fastened(driver seat) and information from the front passenger occupant classification system.

∗ The front passenger occupant classification system judges whether the front passenger seat is occupied by an adult orchild (with child seat) or is unoccupied, according to the load applied to the front passenger seat and whether the seat beltis buckled. Based on the results, it restricts the deployment of the front passenger airbag, front passenger side airbag, andfront passenger seat belt pretensioner. In addition, the system informs the driver of the result of the judgment through theuse of the AIRBAG ON/OFF indicator lights.

∗ The airbag sensor assembly transmits a signal to the engine control module in order to stop the fuel pump when theairbag is deployed.

: Parts Location


A12 30 D1 30 O6 B 33

A13 30 E4 30 O7 33

A19 A 30 F8 28 O8 33

A20 B 30 F16 28 O9 33

A21 C 30 F17 28 O10 33

B9 32 I10 30 P13 33

B10 32 J4 B 31 P14 33

C6 30 O5 A 33 P15 31

: Relay Blocks






1D


1G


1H


25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1L


1O

1P

1R





: Ground Points





System Outline

SCION xB (EM0091U)

123

Memo

SCION xB (EM0091U)

37

SYSTEM CIRCUITS H

2006 xBELECTRICAL WIRING DIAGRAM

SYSTEM CIRCUITSPage

ABS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164Audio System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146Back–Up Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46Cigarette Lighter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140Combination Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82Electronically Controlled Transmission and A/T Indicator . . . . . . . . . . . . . . 98Engine Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48Fog Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60Front Wiper and Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74Headlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66Interior Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64Key Reminder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126Light Reminder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138Multiplex Communication System (CAN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Power Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78PTC Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162Radiator Fan and Condenser Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156Rear Window Defogger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144Rear Wiper and Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76Remote Control Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136Seat Belt Warning (Before Dec. 2005 Production) . . . . . . . . . . . . . . . . . . . . . . 128Seat Belt Warning (From Dec. 2005 Production) . . . . . . . . . . . . . . . . . . . . . . . 130Shift Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124SRS (Before Dec. 2005 Production) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113SRS (From Dec. 2005 Production) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Stop Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70Taillight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66TRAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104Turn Signal and Hazard Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62Two Way Flow Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158VSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104Wireless Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

48

SCION xB (EM0091U)

Engine Control60

A M

AIN

3

15AAM2

1

1

2

1

1O1

1A7

5 6

4

AM2 IG2

ST2

1O6

1O5

B–L

W–R

W–R

BB

–R

IF11

B–R

B–R

2

1

B–Y

B–R

2

1

B–W

B–R

2

1

B–L

B–R

2

1

B–O

7 1O

B

6 1E

B

BB

P

N

9

2

6

B–Y

( A/T

)

( A/T

)

( A/T

)

B–Y

( M/T

)

15AEFI

1

2 3

1 5

1 1

1 1

W–B

EB

W–B

B–Y

GR

B(A/T)

B–L

B–W

B–Y

B–O

B

B–R

I10

11 EA1

13 IF1

Bat

tery

EFIRelay

B–Y

B–R

B–R

( A/T

)

B–Y

EA115

2

1

EA112

B

( M/T

)

B

( M/T

)

B–Y

( M/T

)

8 1G

B–R

B–R

I 6 I 7 I 8 I 9 A 9

F 8

C 5

Par

k/N

eutra

l Pos

ition

SW

Clu

tch

Sta

rt S

W

Fusi

ble

Link

Blo

ckIn

ject

or N

o. 1

Inje

ctor

No.

2

Inje

ctor

No.

3

Inje

ctor

No.

4

Ignition SW

1

B–R

B–R

(BAT)

1H7

B–R

11IF2

B–R

IF24

B–Y

B(A/T)

Noi

se F

ilter

( Igni

tion)

N 1

B–R B–Y

B–Y

B–Y

B

B

3 1A

B–R

SCION xB (EM0091U)

49

GR

B(A/T)

B–L

B–W

B–Y

B–O

3 2

5 1

1A11 1H8

1T6 1H9

5

4

BJ

A25

FC

A12

STA

A1

+B

B–Y

14 IA1

D29

THA

D30

E2G

D28

VGBATT

3 A

4 2 3

1 5

A30

NSW

D1

# 40

D2

# 30

D5

# 20

D6

# 10

B–OB–Y

B–WB–L

B( A

/T)

Y–B V P

W–B

B–Y B

BR

B

C/OPNRelay

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

B–Y

A8

MREL

GR

B–R

B–R

17 C 23 C

IGT1 IGF

16 C

IGT2

ED

2323

GND

VC VOUT

P 1

PSP

32 D

1

3 2

BR

Y–R

VTA1

20 C

VC

18 C

R–W

R–W

2

3 1

BR

B

W–B

1 4 1 4

Y

W

B–RB–R

G–R Y

G–B

YYW

–B

B–R

W–B

B–R

W–B

I 3

+B E2

THA E2G VG

R–W Y

B–Y

BR

BR

M

B–R B–R

I 2

1

B–R

B–R

F14


Fuel

Pum

p

Igni

tion

Coi

l and

Igni

ter

No.

1

Igni

tion

Coi

l and

Igni

ter

No.

2

Pow

er S

teer

ing

Oil

Pre

ssur

e S

enso

r

Thro

ttle

Pos

ition

Sen

sor

T 1 VTA VC

E2

B–R

A9

IGSW

B–R

IA27

GR

B–Y

A2

+B2

B–YB–R

B–R

20IF1

B B

ED

W–B

BR

B–R

Y

W–B

W–B

B–R

G–R

Noi

se F

ilter

(Fu

el P

ump)

N 3

EA14 B

B–Y

B

BRBR

B

Mas

s A

ir Fl

ow M

eter

M 1

W–B

R–W

10IF1

50

SCION xB (EM0091U)

Engine Control

THW

32 C C28

E2

R–L BR

BR

BR

IGT3

C15 14 C

IGT4

I 4

3 2 3 2

1 4 1 4

Y Y

W–B

G–O

G–Y

YY

B–R

W–B

B–R

I 5

W–B

Igni

tion

Coi

l and

Igni

ter

No.

3

Igni

tion

Coi

l and

Igni

ter

No.

4

32

1

BB

–R

C5

RSD

C3

E1

C1

HT1A

42

1 3

C21

OX1A

C2

HT1B

42

1 3

C25

OX1B

LL

WB–R

BR

B BR

BR B–R BR

V 1 ( ∗

1)

W

( ∗1)

( ∗1)

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

B

BR

B

D23

PRG

W–G

2

1

B

B

B

IF213 IF214

IF22

1 IF2

(∗1)

VISC GND

DUTY HT OX HT OX

+B E1 +B E1

BR

BR

BR

I 1

BR

( ∗1)

BRBR

B–R B–R

H 3

H 7


Hea

ted

Oxy

gen

Sen

sor

( Ban

k 1

Sen

sor

1)

Hea

ted

Oxy

gen

Sen

sor

( Ban

k 1

Sen

sor

2)

Idle

Air

Con

trol V

alve

VS

V (

Pur

ge)

IF29

W

B–R

W–B

BR

A5

IB11

B B

IB14W–B

8

9

PP

M

IB18

A6

MPMP VPMP

Leak Detection Pump

1

V

6

W–B

V

IB110

BR

IF27

IB19

IB12

A31

PTMK

3 42

R

R–WBR

BR

BR

W–B

R

IB13

8IF2

R–WR–W

Canister PressureSensor

Ven

t Val

ve

GND+BGNDVCCVOUTSGND

+B

Canister Pump ModuleC10

2

1

Eng

ine

Coo

lant

Tem

p.

Sen

sor

E 2

SCION xB (EM0091U)

51

10ASTOP

1B8

1

2

B4

STP

22

G–W

1B2

1H2

C13

OC1+

C12

OC1–

C10

ALT

2

1

G–Y

G–R

R–Y

R–B L

M

R–B

3

KNK1

29 C

1 EB1

W

C27

NE+

C34

NE–

WW

O

2

1

1

2

C26

G2+

W

B

( ∗1)

C 2

D4

E03

C6

E02

C7

E01

BR

BR

BR

ED

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

BR

BR

B

BR

FANH

A14

10ATAIL

1M4

FAN

NO

. 2R

elay

W–L

W

BR

∗ 1 : Shielded

Y–R

FANL

FAN

NO

. 1 R

elay

13 A

(∗1) (∗1)

1D9

1H10

B32

F/PS

B

C 1

(∗1)

C 3

EC

BR

BR

B–R

S 8

A10

G 1

Cam

shaf

tP

ositi

on S

enso

r

Cam

shaf

t Tim

ing

Oil

Con

trol V

alve

Cra

nksh

aft

Pos

ition

Sen

sor



Generator

Sto

p Li

ght S

W

GSW2

(BAT)(BAT)

B–R

BR

OFF

Tail

Head

Ligh

tC

ontro

l SW

+B T

13

10

1M9

1R3

ELS1

A15

GG

G

ELS2

B3

Fuse

Blo

ckB

–Y

EB12

EKNK

30 C

BB

BR

IF115

BR

BR

BR

1

2

Kno

ck S

enso

r( B

ank

1)

K 1

Com

bina

tion

SW

C 8

52

SCION xB (EM0091U)

Engine Control

D 1

22 A

EC

B17

TC TACH

1 B

P–B

1H14

1P3

P–B

B

13 9

B

B8

SPD HOT

29 B

COOL

18 B

V–W

7. 5AOBD

1P4

W–R

TC TAC

CANL

BR

1E1

1P7

BR

5

SG

BR

W–B

B7

NEO

V

IA26

AA AA

BC

W–R

12

SP1

Data Link Connector 3

W–B

IE

(BAT)

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

Y–B

Y–R

W–R

V–W

B–R

B

B

IG

B A

B A A B

14 6

CANL CANH

W B

B W

B30

W

B–R

Y–B

Y–R

Y–G

Y–G

34 B33 B

CANH

BW

1P17

1O2

BAT

16 4

CG

W–B

IA212 IA21

1F6

1H3

V–W

WB

CANH

11 25

CANL

B W

10

NEO

Junc

tion

Con

nect

or

J 5

V

V

Junc

tion

Con

nect

or

J 6(

A), J

7( B

)

Ski

d C

ontro

l EC

Uw

ith A

ctua

tor

S 3

SCION xB (EM0091U)

53

BR

233

CPU

IF

BR

21

Y–G

Speedometer

W–R

28

R–B

40

3020

13 IA1

B

Tachometer

Wat

er T

emp.

H

ot

Wat

er T

emp.

C

ool

Mal

func

tion

Indi

cato

r La

mp

R–B

B–R

2 29

Y–R

Y–B

1

15ADOME

1

L–Y

L–Y

1G12

1A4

2

(BAT)

Combination MeterC 6

V–W

W–R

B

Junc

tion

Con

nect

or

J 4(

A), (

B)

V–W

(IG)

2

1G

10AGAUGE

13

B–R

Y–B

Y–R

V–W

W–R

(∗2)BD(∗3)AD

(∗3)AD(∗2)BD


54

SCION xB (EM0091U)

Engine Control

This system utilizes an engine control module and maintains overall control of the engine, transmission and so on. An outlineof the engine control is explained here.

1. Input Signals(1) Engine coolant temp. signal circuit

The engine coolant temp. sensor detects the engine coolant temp. and has a built–in thermistor with a resistance whichvaries according to the engine coolant temp. thus the engine coolant temp. is input in the form of a control signal intoTERMINAL THW of the engine control module.

(2) Intake air temp. signal circuitThe intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp., which is input as acontrol signal into TERMINAL THA of the engine control module.

(3) Oxygen sensor signal circuitThe oxygen density in the exhaust gases is detected and input as a control signal into TERMINALS OX1A and OX1B ofthe engine control module.

(4) RPM signal circuitCamshaft 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 inputinto TERMINAL NE+.

(5) Throttle signal circuitThe throttle position sensor detects the throttle valve opening angle, which is input as a control signal into TERMINALVTA1 of the engine control module.

(6) Vehicle speed signal circuitThe vehicle speed sensor detects the vehicle speed, and the signal is input into TERMINAL SPD of the engine controlmodule via the combination meter, from TERMINAL SP1 of the skid control ECU with actuator.

(7) NSW signal circuit (A/T)The Park/Neutral position SW detects whether the shift position are in neutral, parking or not, and inputs a control signalinto TERMINAL NSW of the engine control module.

(8) Battery signal circuitVoltage is constantly applied to TERMINAL BATT of the engine control module. When the ignition SW is turned on, thevoltage for engine control module start–up power supply is applied to TERMINALS +B and +B2 of the engine controlmodule via EFI relay.

(9) Starter signal circuitTo confirm whether the engine is cranking, the voltage applied to the starter motor during cranking is detected and thesignal is input into TERMINAL STA of the engine control module as a control signal.

(10)Engine knock signal circuitEngine knocking is detected by knock sensor and the signal is input into TERMINAL KNK1 of the engine control moduleas a control signal.

System Outline

SCION xB (EM0091U)

55

2. Control System∗ SFI system

The SFI system monitors the engine condition through the signals, which are input from each sensor to the enginecontrol module. The best fuel injection volume is decided based on this data and the program memorized by the enginecontrol module, and the control signal is output to TERMINALS #10, #20, #30 and #40 of the engine control module tooperate the injector. (Inject the fuel). The SFI system produces control of fuel injection operation by the engine controlmodule in response to the driving conditions.

∗ ESA systemThe ESA system monitors the engine condition through the signals, which are input to the engine control module fromeach sensor. The best ignition timing is detected according to this data and the memorized data in the engine controlmodule, and the control signal is output to TERMINALS IGT1, IGT2, IGT3 and IGT4. This signal controls the ignition coiland igniter to provide the best ignition timing for the driving conditions.

∗ IAC systemThe IAC system increases the RPM and provides idling stability for fast idle–up when the engine is cold and when theidle speed has dropped due to electrical load, etc. The engine control module evaluates the signals from each sensor,outputs current to TERMINAL RSD, and controls the idle air control valve.

∗ Fuel pump control systemThe engine control module operation outputs to TERMINAL FC and controls the C/OPN relay. Thus controls the fuelpump drive speed in response to conditions.

3. Diagnosis SystemWith the diagnosis system, when there is a malfunctioning in the engine control module signal system, the malfunctionsystem is recorded in the memory. The malfunctioning system can then be found by reading the display (Code) of themalfunction indicator lamp.

4. Fail–Safe SystemWhen a malfunction occurs in any system, if there is a possibility of engine trouble being caused by continued control basedon the signals from that system, the fail–safe system either controls the system by using data (Standard values) recorded inthe engine control module memory or else stops the engine.

: Parts Location


A9 30 F8 28J4

A 31

A10 30 F14 32J4

B 31

C1 28 G1 28 J5 31

C2 28 H3 28 J6 A 31

C3 28 H7 30 J7 B 31

C5 30 I1 29 K1 29

C6 30 I2 29 M1 29

C8 30 I3 29 N1 29

C10 32 I4 29 N3 33

D1 30 I5 29 P1 29

E2 28 I6 29 S3 29

E3 A 30 I7 29 S8 31

E4 B 30 I8 29 T1 29

E5 C 30 I9 29 V1 29

E6 D 30 I10 30

: Relay Blocks



56

SCION xB (EM0091U)

Engine Control





1D


1E


1F


1G


1M


1O

1P

1R





EB1 34 Engine Wire and Sensor Wire (Near the Starter)






: Ground Points



EC34 Engine Block

ED34 Engine Block




BJ 36 Rear Quarter Panel Inner LH

SCION xB (EM0091U)

57

Memo

124

SCION xB (EM0091U)

Shift Lock

8 1R

10AGAUGE

10ASTOP

1B8

1

2

1B2

1P18

R–B

G–Y

1K1

1O2

IE

G–R

G–W

L–R B

W–B

W–B

5 3

1

IG STP

SLS+ SLS– E

S 8

S 6

Shift LockSolenoid

P S

W

Shift Lock Control SW

Stop Light SW

(BAT)(IG)

SCION xB (EM0091U)

125

The current is applied at all times through the STOP fuse to TERMINAL 2 of the stop light SW.When the ignition SW is turned to ON position, the current from the GAUGE fuse flows to TERMINAL 5 of the shift lockcontrol ECU.

Shift Lock MechanismWith the ignition SW at ON position, when a signal that the brake pedal is depressed (Stop light SW on) and a signal that theshift lever is put in P position (Continuity P SW) is input to the shift lock control SW, the shift lock control SW operates andthe current flows from TERMINAL 5 of the shift lock control SW to TERMINAL SLS+ to the shift lock solenoid to TERMINALSLS– of the shift lock control SW to TERMINAL 1 to GROUND. This causes the shift lock solenoid to turn on (Plate stopperdisengages) and the shift lever can shift into position other than P position.

: Parts Location


S6 31 S8 31




1K


25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1P


1R

: Ground Points



System Outline

126

SCION xB (EM0091U)

Key Reminder

10AGAUGE

15ADOME

1G13

Y

C 61

24 25

1G12

4 1A

R–B

2

U 1

1

Buzzer

W–B

W–B

IE

23

Y

1

2

1P19

1F1

1P16

2 1O

L–Y

RR

1S1

1G4

1

D 5

L–Y

Combination Meter

Doo

r C

ourte

sy S

WFr

ont L

H

Unl

ock

War

ning

SW

CPU

IF

21

BR

BR

(IG)(BAT)

SCION xB (EM0091U)

127

Current is always applied from the DOME fuse to TERMINAL 1 of the combination meter. When the ignition SW is turned toON position, the current from the GAUGE fuse flows to TERMINAL 23 of the combination meter.

Key Reminder SystemWhen the driver door is opened with the ignition SW off and ignition key remaining in the key cylinder (Unlock warning SWon), a signal is input from the unlock warning SW to TERMINAL 25 of the combination meter, and from the door courtesy SWfront LH to TERMINAL 24 of the combination meter. As a result, the buzzer in the combination meter goes on and warns thedriver that the key is remaining in the key cylinder.

: Parts Location


C6 30 D5 32 U1 31

: Relay Blocks






1F




1P


: Ground Points




System Outline

128

SCION xB (EM0091U)

Seat Belt Warning (Before Dec. 2005 Production)

10AGAUGE

15ADOME

1G13

C 61

33 32

1G12

4 1A

R–B

2

1

Buzzer

W–B

W–B

IE

23

W–R

3

1D3

2 1O

L–Y

OL–

Y

Combination Meter

CPU

IF

21

BR

BR

(IG)(BAT)

Fron

t Pas

seng

erS

eat B

elt

War

ning

Lig

ht

35

Bel

tG

–W

Inte

grat

ion

Con

trol a

nd P

anel

I13

9

1

W–B

IG

IB18

1

2

IB112

1

3

D

D

Junc

tion

Con

nect

or

J 6

Buc

kle

SW

LH

B 7

Buc

kle

SW

RH

B 8

Occ

upan

t Det

ectio

n S

enso

r

B28 B27 A7 C12 C8

E2 E1 LBE– RBE– RBE+

Airbag Sensor AssemblyA 9(A), A10(B), A11(C)

W–B

1D2

R–B

W–B

W–B

R–B

W–R

W–RO

B

SCION xB (EM0091U)

129

Current is always applied from the DOME fuse to TERMINAL 1 of the combination meter. When the ignition SW is turned toON position, the current from the GAUGE fuse flows to TERMINAL 23 of the combination meter.

Seat Belt Warning SystemWhen the ignition SW turned on, a signal is input to the combination meter. To determine whether the driver has fastened theseat belt, a signal is input from the buckle SW LH to TERMINAL 32 of the combination meter. When the seat belt is notfastened, 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 passengerseat, and determines whether the seat belt is fastened. When not fastened, the signals from the buckle SW RH is input toTERMINAL 33 of the combination meter, and the front passenger seat belt warning light blinks.

: Parts Location


A9 A 30 B7 32 I13 30

A10 B 30 B8 32 J6 31

A11 C 30 C6 30

: Relay Blocks






1D


1O





: Ground Points





System Outline

130

SCION xB (EM0091U)

Seat Belt Warning (From Dec. 2005 Production)

7 1A

1 1O

15AAM2

1

1

2

1

60A

MA

IN

3

1O6

Bat

tery

B–L

W–R

W–R

I10

R–B

5 6AM2 IG2

ST2

F 8

C 6

23

B

10AGAUGE

1G13

21

Com

bina

tion

Met

er

Fusi

ble

Link

Blo

ck

Ignition SW

IF

BR

(IG)

1G8

40

B–R

Bel

t

CPU

Buzzer

323335

1L3

B

IB113

BB

R–B

G–W

O

W–RO

G–W

W–R

B–R

R–B

1

2

1

15ADOME

L–Y

L–Y

12 1G

4 1A

(BAT)

SCION xB (EM0091U)

131

23 BB13 B17

G–W R

PAONPBEW P–AB

GR

B 9

3

G–W

A11

DBE+

2

R–B

A12

DBE–

Seat Position SensorBuckle SW LH

5

W–R

4

BK

W–B

1

P–AB

6 3

2

IND PAON

JunctionConnector

J 4(B)

B


BC

BC


P15

IB112

D

AD

A

JunctionConnector

J 6(A)

BB

GR

C12

FSP+

Y

C13

FSP–

GR

Y

R–B

G–W

O

W–R

R–B

W–R W–R


O

LBE+ LBE– E

SA2

132

SCION xB (EM0091U)


BGND

RBE+

1

BSWFSR+ FSR–

RBE–

2

+BIG GND

B10Buckle SW RH

DIA7. 5AECU–B

1R6

(BAT)

J 4(B)JunctionConnector

B

F B

F

W–R

IB16

W–R

W–RB GR

B

O 5(A), O 6(B)Occupant Classification ECU

O P

IB111 IB15

W W–B

W–B

W–B

IE

2 1O

11 1K

A5A9A3A2A4A8A1A7

SIL

7


5 1P

12 1H

WW

YGR

Y

SCION xB (EM0091U)

133

SGD2

SVC2

SVC2

SGD2

SIG2

SIG2

SGD4

SVC4

SVC4

SGD4

SIG4

SIG4

Occupant ClassificationSensor Rear RH

O10Occupant ClassificationSensor Front RH

O 8

B4B10B6B2B8B12

321321

BRRVOLW

SGD1

SVC1

SVC1

SGD1

SIG1

SIG1

SGD3

SVC3

SVC3

SGD3

SIG3

SIG3



O 7

B3B9B5B1B7B11

321321

WYGRGSBR


134

SCION xB (EM0091U)


Current is always applied from the DOME fuse to TERMINAL 1 of the combination meter. When the ignition SW is turned toON position, the current from the GAUGE fuse flows to TERMINAL 23 of the combination meter and flows TERMINAL 2 ofthe passenger seat belt warning lamp.

Seat Belt Warning SystemWhen the ignition SW turned on, a signal is input to the combination meter. To determine whether the driver has fastened theseat belt, a signal is input from the buckle SW LH to TERMINAL 32 of the combination meter. When the seat belt is notfastened, the seat belt warning light in the combination meter blinks, and emits a warning sound.In addition, the front passenger is recognized by the occupant classification ECU is installed in the front passenger seat, anddetermines whether the seat belt is fastened. When not fastened, the signals from the occupant classification ECU is input toTERMINAL 1 of the passenger seat belt warning lamp via the combination meter, and the passenger seat belt warning lampblinks.

: Parts Location


A19 A 30 D1 30 O6 B 33

A20 B 30 F8 28 O7 33

A21 C 30 I10 30 O8 33

B9 32 J4 B 31 O9 33

B10 32 J6 A 31 O10 33

C6 30 O5 A 33 P15 31

: Relay Blocks






1G


1H


1K

25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1L 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)

1O


1P

1R




: Ground Points





System Outline

SCION xB (EM0091U)

135

Memo

136

SCION xB (EM0091U)

Remote Control Mirror

6 1L

15AACC

B

EM+VRVLHRHL

RHLHRHLH

Rig

ht/

Dow

n

Left/

Up

Dow

n

Up

Rig

ht

Left

Sel

ect S

WO

pera

tion

SW

GR

8

7632 45

IE

IC22 3 IC2

M M

IG23 2 IG2

M M

1L5

1L12

IG21 IC21

1L11

3 3

1 5 1 5

LG–R

BR–Y

BR

–W

LG–B

BR

–W

BR

–Y

LG–R

LG–B

G–W

G–R

G–Y

W–B

G–W

G–R

W–B

G–W

G–R

R17

G–R

R16

R 5Remote Control Mirror SW

Rem

ote

Con

trol

Mirr

or L

H

Rem

ote

Con

trol

Mirr

or R

H

(ACC)

SCION xB (EM0091U)

137

: Parts Location


R5 31 R16 33 R17 33



1L 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)





: Ground Points



138

SCION xB (EM0091U)

Light Reminder

10

10ATAIL

1M4

15ADOME

1

OFF

Tail

Head

9 1M

10 1F

L–Y

13

1G4

1S1

1

G–W

L–Y

RG

R

D 5

10AGAUGE

1G13

R–B

2

1A4

1G12

Buzzer

C 8

G

G

24

23 1

C 6

26

Com

bina

tion

Met

er

Combination SW

Doo

r C

ourte

sy S

WFr

ont L

H

Ligh

tC

ontro

l SW

CPU

IF

21

BR

BR

(BAT)(IG)(BAT)

19 1P

1 1F

2

2 1D

16 1P

IE

W–B

1

YY

W–B

25

Unl

ock

War

ning

SWU 1

SCION xB (EM0091U)

139

The current is applied at all times to TERMINAL 1 of the combination meter through the DOME fuse.When the ignition SW is turned to ON position, the current flows to TERMINAL 23 of the combination meter through theGAUGE fuse. When the light control SW is turned to TAIL or HEAD position, current is applied to TERMINAL 26 of thecombination meter through the TAIL fuse.

Light Reminder SystemWhen the light control SW is in TAIL or HEAD position, the ignition SW turned to OFF from ON position, ignition key is not inthe key cylinder and the driver’s door opened (Door courtesy SW on), the current flows to TERMINAL 23 of the combinationmeter stops. As a result, the combination meter is activated and current flows from TERMINAL 1 of the combination meter,the buzzer in the combination meter goes on to remind the light is lighting up.

: Parts Location


C6 30 D5 32

C8 30 U1 31

: Relay Blocks






1D


1F


1M


1P


: Ground Points




System Outline

140

SCION xB (EM0091U)

Cigarette Lighter

15AACC

1N6

1

2

B–W

W–B

C 4

IE

CigaretteLighter

(ACC)

SCION xB (EM0091U)

141

: Parts Location


C4 30



1N 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)

: Ground Points



142

SCION xB (EM0091U)

Horn

15AHORN

1

2 3

1 5

1 1

1 1

IA14

1

G–W

W–R

G–R

G–R

2

C 7(A), (B)H 4

HORNRelay

D 4

23

W–R

W–R

W–R

HORN

G–W

W–R

1

G–R

H 5

G–R

Combination SW

Door LockControl Relay

Horn(High)

Horn(Low)

Hor

n

(BAT) ∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production

(∗2)BB(∗1)AC

(∗2)B6(∗1)A1

(∗1)AC(∗2)BB

ACBB

JunctionConnector

J 4(A), (B)

SCION xB (EM0091U)

143

: Parts Location


C7A 30 H4 28 J4 B 31

C7B 30 H5 28

D4 30 J4 A 31

: Relay Blocks






144

SCION xB (EM0091U)

Rear Window Defogger

TimerCircuit

B

W–B

On

Off

W–B

2

B

8 1J

30ADEF

B

10AGAUGE

1P11

W–B

6 IB2

B–R

BM

3

A1

B1

42

BD11

1K3

2 1O

B

1

B

IE

W–B

1

BC11

B

R13

( A) ,

R14

( B)

R 4

N 2

R–B

B–R

R–B

Noi

se F

ilter

(R

ear

Win

dow

Def

ogge

r N

o. 1

)

Rea

r W

indo

wD

efog

ger

Rel

ay

Rea

r W

indo

w D

efog

ger

Integration Control and Panel

N 4

Noi

se F

ilter

( Sto

p Li

ght a

nd R

ear

Win

dow

Def

ogge

r N

o. 2

)

I12

Rear WindowDefogger SW

B–R

B–R

B

31

52

(BAT)(IG)

B

3

ELS2


E 4

B–Y

B

1

7. 5

A I/

UP

1

2F1

5Fu

se B

lock

B

SCION xB (EM0091U)

145

: Parts Location


E4 30 N2 31 R13 A 33

F15 30 N4 33 R14 B 33

I12 30 R4 31



1J




1P





BD1 36 Back Door No.1 Wire and Rear Window No.1 Wire (Right Side of Back Door)

: Ground Points



BM 36 Back Door LH

146

SCION xB (EM0091U)

Audio System

15ADOME

1

15AACC

1N9

1A4

1N3

L

7

A4 A8

L–Y

L–Y

B–R

GR

A7

IF

1 2

A1 A5

GND FR+ FR–

LG L

F13

BA

1 2

A2 A6

FL+ FL–

P V

F12

B

1 2

P

21

LG

A

V

IG214

W–B

W–B

+B ANT

1

IC214

LLGP V

T 4

P

IC2

RR–RR+RL–RL+

B2 B6 B1 B3

IB29 IB210 IB211 IB212

1 2 1 2

WRYB

WR

R11

YB

R12

LLGV

T 5

7 IG2

AA AD

BC BC BF BF

AF

BDBD

AC

J 2(

A), J

3( B

)

A3

ACC

B

2 A14

R 2(A), R 3(B), R18(C)

AntennaAmplifier

Front Door Speaker RHFront Door Speaker LH

Junc

tion

Con

nect

or

Junc

tion

Con

nect

or

Radio and Player

Rear SpeakerLH

Rear SpeakerRH

Tweeter LH Tweeter RH

J 2(

A), J

3( B

)

(BAT) (ACC)

SCION xB (EM0091U)

147

C17 C15 C16 C19

ALI ARI ASGN AUXI

ALO ARO ASGN AUXO

1 2 3 4

Stereo Jack AdapterS 9

B W

( Shi

elde

d)

R

V–W

V–W

10AGAUGE

1G13

(IG) (BAT)

15ADOME

1

1A4

1G12

L–Y

L–Y

2

R–B

C 6

23

29 28

Com

bina

tion

Met

er

CPU

1

Spe

edom

eter

21

IA113

IF

W–B

W–R

W–R

Ski

d C

ontro

l EC

Uw

ith A

ctua

tor

S 3

SP1

R 2(A), R 3(B), R18(C)Radio and Player

12

SW2

C8

O

SWG

C6

LG

SW1

C7

P

121011

BD (∗2)AD (∗1)

AD (∗1)BD (∗2)

V–W

JunctionConnector

J 4(A), (B)

C3

SPD

Combination SWC 7


AU2 EAU AU1

MODE Seek+

Seek–

Volume+

Volume–

148

SCION xB (EM0091U)

Audio System

: Parts Location


A14 30 J3 B 31 R12 33

C6 30J4

A 31 R18 C 31

C7 30J4

B 31 S3 29

F12 32 R2 A 31 S9 31

F13 32 R3 B 31 T4 31

J2 A 31 R11 33 T5 31

: Relay Blocks






1G25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)








: Ground Points



SCION xB (EM0091U)

149

Memo

58

SCION xB (EM0091U)

Headlight

2 1O

1M6

Head

Tail

OFFFlash

Low

High

IEIG

2 5

1 3

B AB A

2 1F5 1M7 1M

1G12

4 1A

11 1B10 1B8 1A9 1A

15ADOME

3

21

3

21

1

10A H–LP RH/H–LP LO RH

1

10A H–LP LH/H–LP LO LH

1

B–Y

H 2

H 1

B

J 6(

A), J

7( B

)

B–Y

B–W

B–R B

L–Y

B–W B–Y

L–Y

D 4

IA2

BB

B–W B–W

B–W

HRLY

H 6

B–Y

B–Y

B–Y

W–B

8 9

Dimmer SW

Light Control SW

R

13

C 8

W–B

11

2 2 2

5B B

1

14

C 6

Bea

m

W–B

W–B

Com

bina

tion

Met

er

Combination SWDoor LockControl Relay

Hea

dlig

ht L

H

Hea

dlig

ht R

H

Hea

dlig

htR

elay

Junc

tion

Con

nect

or

(BAT)(BAT)(BAT)

SCION xB (EM0091U)

59

: Parts Location


C6 30 H1 28 J6 A 31

C8 30 H2 28 J7 B 31

D4 30 H6 30

: Relay Blocks







1F


25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1M


1O




: Ground Points




150

SCION xB (EM0091U)

Combination Meter

B–Y

Airb

ag S

enso

r A

ssem

bly

Bat

tery

F 8

Unl

ock

War

ning

SW

60A

MA

IN

3

2

1

V–W

B

B–L

W–R

W–R

BR

BR

F14

Y

VV

G–W

I10

2

3

4 1T

7 1F

IF

ST2

IG2AM2 65

7 1A

1 1O

1

15AAM2

1

TACH

B

OO

ccup

ant D

etec

tion

Sen

sor

( ∗1)

IB27

BR

BR

35 32

Buc

kle

SW

LH

W–R

J 6(

A), J

7( B

)

1F6

1H3

SPD

A A

C B

3029

33 34253121

B

V–W

E 4Engine Control Module

Fusi

ble

Link

Blo

ck

Fuel

Sen

der

Ignition SW

Junc

tion

Con

nect

or

OD

O/T

rip S

W

Fuel

Tach

omet

er

Spe

edom

eter

LCD(ODO/Trip Clock)

V–W

Doo

r Lo

ckC

ontro

lR

elay

28

IA113

SP1

12

W–R

W–R

Ski

d C

ontro

l EC

Uw

ith A

ctua

tor

S 3

1K4

B


CPU

Clo

ck H

Clo

ck M

W–G

Rhe

osta

t

27

BuzzerV

–W

Junc

tion

Con

nect

or

J 4(

A), (

B)

78

Airb

ag S

enso

r A

ssem

bly

( ∗2)

(∗2)BD(∗1)AD

(∗1)AD(∗2)BD

Inte

grat

ion

Con

trol a

nd P

anel

(∗1

)P

asse

nger

Sea

t Bel

t War

ning

Lam

p ( ∗

2)

SCION xB (EM0091U)

151

Ski

d C

ontro

l EC

Uw

ith A

ctua

tor

1G8

1O6

B–R

R–B

P

1G13

10AGAUGE

23

37

40B

AB

S

Bra

ke

Fuel

SR

S

Bel

t

Doo

r

Bea

m

LCD

Bac

k Li

ght

Oil

Pre

ssur

e

Oil

Pre

ssur

e S

W

Bra

ke F

luid

Lev

elW

arni

ng S

W

W–B

B

2

1

EA

B 2

Bac

k D

oor

Cou

rtesy

SW

B

O 1

B–W

Ski

d C

ontro

l EC

Uw

ith A

ctua

tor

173638

1

2

G

2 IF1

G

L–Y

L–Y

Com

bina

tion

SW

Doo

r C

ourte

sy S

WFr

ont R

H,

Rea

r LH

, R

H

Doo

r C

ourte

sy S

WFr

ont L

H

B–Y

R–WR

1

15ADOME

1G12

1A4

24 15 14


CPU

IA214

B

Mai

ntR

eqd

(BAT)(IG)

1


152

SCION xB (EM0091U)

Combination Meter

Eng

ine

Con

trol M

odul

e

B–R

BR

–W

Eng

ine

Con

trol M

odul

e

G–B

G–Y

FLS

H R

elay

G–O

13

12 4 195

18R

–Y

Ski

d C

ontro

l EC

Uw

ith A

ctua

tor

Y–G

20

Mal

func

tion

Indi

cato

r La

mp

TRA

C O

FF

Wat

er T

emp.

H

ot

Cha

rge

O/D

OFF

Slip

VS

C

Wat

er T

emp.

C

ool

Turn

LH

Turn

RH

16

Gen

erat

orY


3

Y–R

2

Y–B

Eng

ine

Con

trol

Mod

ule

SCION xB (EM0091U)

153

Illum

inat

ion

G–W

G–R

1076

R–WR GR

R–Y

A/T

Indi

cato

rLi

ght S

W

8 9 11

P R N D 2 L

26

Com

bina

tion

SW

G


154

SCION xB (EM0091U)

Combination Meter

: Parts Location


B2 28 F14 32 J6 A 31

C6 30 I10 30 J7 B 31

E4 30J4

A 31 O1 29

F8 28J4

B 31 S3 29

: Relay Blocks






1F


1G


1K


1O








: Ground Points




SCION xB (EM0091U)

155

Memo

156

SCION xB (EM0091U)

Radiator Fan and Condenser Fan

30ARDI

1

7. 5AECU–IG

1B3

3 2

5 1

1 1

1

1

1

1

1 1

1 3

2 5

4

1

2

1

15 IA2 7 IA1

FANNO. 1Relay

FANNO. 2Relay

L–W

B–L

LW

–B

A 1

LL

R 1

W–B

2

1

2

Y–R

L–R

L–R

B–L

13 14

W–B

W–B

EB

W–B

W–L

L–R

W–L

W–L

Y–R

FANL FANH

E 3

A/C

Con

dens

erFa

n R

esis

tor


RadiatorFan Motor

(IG)(BAT)

M

SCION xB (EM0091U)

157

The current is applied at all times through the RDI 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 TERMINAL13 of the engine control module. At the same time as this current flow, the current from ECU–IG fuse flows to the FAN NO.2relay (Coil side) to TERMINAL 14 of the engine control module.

1. Low Speed OperationWhen the A/C system is operating, the FAN NO.1 Relay is turned on. As a result, the current flows from the RDI fuse to FANNO.1 relay (Point side) to TERMINAL 2 of the radiator fan motor to TERMINAL 1 to TERMINAL 3 of the FAN NO.2 relay toTERMINAL 4 to TERMINAL 2 of the A/C condenser fan resistor to TERMINAL 1 to GROUND, and the radiator fan motorrotates at low speed.

2. High Speed OperationWhen the pressure SW (Single) is on or engine control module operated, the FAN NO.1 and NO.2 relay is turned on. As aresult, the current flows from the RDI fuse to FAN NO.1 relay (Point side) to radiator fan motor to TERMINAL 3 of the FANNO.2 Relay to TERMINAL 5 to GROUND, and the radiator fan motor rotates at high speed.

: Parts Location


A1 28 E3 30 R1 29

: Relay Blocks










: Ground Points



System Outline

158

SCION xB (EM0091U)

Two Way Flow Heater

7. 5AA. C

40AHTR

10AGAUGE

3 2

4

5 1

1J7 1J11O2

1J9

W–B

W–B

W–B

IE

W–B

L–R L

L–B

HTRRelay

B–Y

B–Y

2

W–B

Blower SW

L–W

L–Y

L–W

L–B W–B

L–R

L–Y

L–B

L–B

10 6 7

2

1

HI M2 M1 LO OFF

I13

L

IG


IH13 IH16 IH15 IH14

IH11

21 3 2 4

1Blower ResistorB 4

Blo

wer

Mot

orB

3

(IG)(BAT)

M

SCION xB (EM0091U)

159

13

Foot

SW

A17(A), A18(B)

F/D

SW

7. 5AECU–IG

1H11

I15

IG

Max

Hot

SW

2

W–B

32 81

7A 8

B–L

W–B

B–Y

L–B

L–B

W L–O

L–R

L–Y

W–B

L–W

W–B

B–L

B–L

B–L

SW–6 SW–9 IG OUT–7OUT–4OUT–6

SW–2 GND–1

W–B

B–L

L–B

W

L–B

L–B

Foot

Mod

e S

W

FRS

REC

2

1

D 2

A

M ControlCircuit

B

Air Inlet Servo Motor


A/C Amplifier

Inle

t Air

Pos

ition

Det

ectio

n S

W

(IG)

B14 B17 A14 A18 A16 A28

B24 A9A8 A20 A24

ALT CANH CANL

B34B33C10

IF14

ALT CANH CANL

Engine Control ModuleE 4(B), E 5(C)

GeneratorG 1

B WWB

G–B

LL

L

A B

A B

3

M

Junc

tion

Con

nect

or

J 5

A

A

Junc

tion

Con

nect

or

J 7

W


(∗2)BA(∗1)AA

(∗1)AA(∗2)BA

JunctionConnector

J 4(A), (B)

B–Y

160

SCION xB (EM0091U)

Two Way Flow Heater

When all of the following conditions are met, the recirculation/fresh air inlet damper is switched to the DUAL MODE position.∗ The recirculation/fresh air switch is at FRESH position∗ The blower SW is on.∗ The max hot SW is on.∗ The foot mode SW is at FOOT or F/D position.

: Parts Location


A8 30 D2 30 I15 30

A17 A 30 E4 B 30J4

A 31

A18 B 30 E5 C 30J4

B 31

B3 30 G1 28 J5 31

B4 30 I13 30 J7 31



1H

25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1J 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)

1O





IH1 35 Instrument Panel Wire and A/C Sub Wire (Right Side of A/C Unit)

: Ground Points




System Outline

SCION xB (EM0091U)

161

Memo

162

SCION xB (EM0091U)

PTC Heater

50AHTRSUB1

1

7. 5AECU–IG

3 2

5 1

1 1

HTR SUB1Relay

1 1

IA217

PTC1 ALT

B–W

R

L–W

G–B

2

L–W

IG

A17(A), A18(B)

IG

GND–1

W–B

W–B

4 IF1

G 1

3

L

1

P 5

1H11

B–L

B–Y

2

I15

B–L

L–B

3

L–B

B–L

M

B–Y

Generator

Inte

grat

ion

Con

trol

and

Pan

el

A/C Amplifier

PTC

Hea

ter

(IG)(BAT)

7. 5AA. C

1J9

HTR

Rel

ay

3 2

4

5 1

2

(IG)(BAT)

IE

1O2

W–B

40AHTR

10AGAUGE

B

A A

SW–6

L–B

EA

W–B

B9 A14 B24

A24

C32 C28

B34B33C10

A8 A9

LL

1

R–L BR

ALT CANH CANL

THW E2

A B

A B

B W

B W

CANLCANH

Eng

ine

Con

trol

Mod

ule

E 4(

B), E

5( C

)Ju

nctio

nC

onne

ctor

J 5

JunctionConnector

J 7

2

Eng

ine

Coo

lant

Tem

p.

Sen

sor

E 2

Max

Hot

SW

14


(∗2)BA(∗1)AA

(∗1)AA(∗2)BA

JunctionConnector

J 4(A), (B)

SCION xB (EM0091U)

163

When all of the following conditions are met, the PTC heater operates.∗ The engine coolant temp. has reached the specified temperature.∗ The engine RPM has exceeded the specified RPM for more than 5 seconds continuously.∗ The max hot SW is on.If any of the above conditions change, the PTC heater stops. The PTC heater is turned on/off according to the generator’scharge/discharge condition.

: Parts Location


A17 A 30 E5 C 30 J4 B 31

A18 B 30 G1 28 J5 31

E2 28 I15 30 J7 31

E4 B 30 J4 A 31 P5 31

: Relay Blocks





1H


1O






: Ground Points





System Outline

164

SCION xB (EM0091U)

Air Conditioning

7. 5AA. C

40AHTR

10AGAUGE

3 2

4

5 1

1J7 1J11O2

1J9 1H18

10 6 7

2

1

HI M2 M1 LO OFF

W–B

W–B L–

R

L

L–B

HTRRelay

B–Y

B–Y

2

W–B

I13

L

L–Y

L–W W–B

IE IG

L–W

L–B

W–B

L–R

L–Y

L–B

L–B

W–B

W–B


IH11

IH13 IH16 IH15

1 3 2 42

1

Blower SW

IH14

Blo

wer

Mot

orB

3

Blower ResistorB 4

(IG)(BAT)

M

W–B

B–Y

B–Y

W–B

SCION xB (EM0091U)

165

B–Y

On

Off

O

1

SG–2TESW–5

2

I11

3 1

W–B

BR

4

3

DEF

B–Y

B–Y

SW–4B

–W

J 4(

A), (

B)

A27 A26 A22 A23

B–Y


Junc

tion

Con

nect

or

A/C SW

GND–1

A24

IG

W–B

Def

rost

er M

ode

Det

ectio

n S

W

D 2

B–Y

W–B

7. 5AECU–IG

1H11

A14

B–L

B–L

(IG)

IG

A/C

Am

plifi

erA1

7(A)

, A18

( B)

A13 A7 10 A12 B24 A9A8

IF112 IA13 IA18 IA213 IA14

2

EA13

EA

L–B

R–W BR

B–R

G–B

L–B

B–W

W–B

R–W BR

B–R

C27 C34

C10 B33 B34

2

1

EC

B W

B W

LL

L

A B

A B

NE+ NE–

ALT CANH CANLM

Pressure SensorP 2

GeneratorG 1

Eng

ine

Con

trol

Mod

ule

E 4(

B), E

5( C

)Ju

nctio

nC

onne

ctor

J 5

SOL+ S5–2 SG–1 PRE ALT CANH CANL

3 1 2

3

BR

WO

( Shi

elde

d)C

rank

shaf

tP

ositi

onS

enso

r

C 3

1

A/C

Mag

netic

Val

ve

A 2

A

2

A/C

The

rmis

tor

A 6

SW–9

B17

1

2

WB

–YB

–LW

Inte

grat

ion

Con

trol

and

Pan

el

I15

Max

Coo

l SW

(∗1)AA

(∗2)BA (∗2)BA(∗1)AA(∗1)AA

(∗2)BA


166

SCION xB (EM0091U)

Air Conditioning

Current is applied at all times through the HTR fuse to TERMINAL 5 of the HTR relay.When the ignition SW is turned on, the current flows through the GAUGE fuse to TERMINAL 1 of the HTR relay toTERMINAL 2 to TERMINAL 2 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 2 of the blower SW to TERMINAL 1 toGROUND, causing the HTR relay to turn on. This causes the current flows from the HTR fuse to TERMINAL 5 of theHTR relay to TERMINAL 3 to TERMINAL 1 of the blower motor to TERMINAL 2 to TERMINAL 1 of the blower resistor toTERMINAL 4 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 2 of the blower SW to TERMINAL 1 toGROUND, causing the HTR relay to turn on. This causes the current flows from the HTR fuse to TERMINAL 5 of theHTR relay to TERMINAL 3 to TERMINAL 1 of the blower motor to TERMINAL 2 to TERMINAL 1 of the blower resistor toTERMINAL 2 to TERMINAL 7 of the blower SW to TERMINAL 1 to GROUND. At this time, the blower resistance of theblower 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 TERMINAL 1 of the blowermotor to TERMINAL 2 to TERMINAL 1 of the blower resistor to TERMINAL 3 to TERMINAL 6 of the blower SW toTERMINAL 1 to GROUND. At this time, resistance of the blower resistor is smaller than at M1 position, so the blowermotor rotates at medium high speed.

∗ High speed operationWhen the blower SW is moved to HI position, the current flows to TERMINAL 2 of the blower SW to TERMINAL 1 toGROUND, causing the HTR relay to turn on.This causes the current flows from the HTR fuse to TERMINAL 5 of the HTR relay to TERMINAL 3 to TERMINAL 1 ofthe blower motor to TERMINAL 2 to TERMINAL 10 of the blower SW to TERMINAL 1 to GROUND, rotating the blowermotor at high speed.

2. Air Conditioning OperationWhen 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 theTERMINAL 3 of the A/C SW. If the A/C SW is turned on, at this time a signal is input into the A/C amplifier. This activates theA/C amplifier.

3. DEF or FOOT & DEF Synchronized Control FunctionWhen the blower SW is on and the heater control lever (Air vent mode control lever) turned to DEF position, it causes A/C torun whether A/C SW is on or not.

: Parts Location


A2 28 C3 28 I13 30

A6 30 D2 30 I15 30

A17 A 30 E4 B 30J4

A 31

A18 B 30 E5 C 30J4

B 31

B3 30 G1 28 J5 31

B4 30 I11 30 P2 29



1H


1O


System Outline

SCION xB (EM0091U)

167








: Ground Points



EC 34 Engine Block



60

SCION xB (EM0091U)

Fog Light

10AGAUGE

1J10

3 1

5 2

1

2

1

2

EB

F11

G–R

R–W

R–W

R–W

W–B

W–B

F10

G–R

IA112

ON

OFF

Head

Tail

OFFFlash

Low

High

Dimmer SW

Light Control SW

C 8

BB

AB

1O2

1M6

IE

11

W–B

W–B

2 3

8

G–O

B–W

B–W

G–O

J 6(A), J 7(B)

W–B

EA

Combination SW

Front FogLight Relay

Front Fog Light SW

Junction Connector

(IG)

Fron

t Fog

Ligh

t LH

F 3

Fron

t Fog

Ligh

t RH

F 4

∗ 1 : Before Dec. 2005 Production∗ 2 : From Dec. 2005 Production

15AFOG

(BAT)

( ∗1)

(∗2)

SCION xB (EM0091U)

61

: Parts Location


C8 30 F10 30 J7 B 31

F3 28 F11 30

F4 28 J6 A 31



1J

25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1M 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)

1O





: Ground Points





62

SCION xB (EM0091U)

Turn Signal and Hazard Warning Light

IF

W–B

10AGAUGE

FLSH Relay

10AHAZ

LH

RHTurn

1

5

1

5

3

22

3

EB EA BJ

1B7 1B6 1S8 1T5 1F14 1F9

61 5

3

4

5 7

13

1M11M3

W–B

2

W–B

W–B

W–B

W–B

G–B

G–Y

G–B

G–B

G–Y

G–Y

G–B

G–Y

W–B

W–B

1O2

6

EL ER+BIG

LL LR

1J4

EHW

8

2

1

IE

I12

G–O

W–B

W–B

W–B

18

C 8

BK

R 8

R 7

Turn

Turn1P9

1G10

G–O

F 5

F 6

A

A

C

C

G–B

G–Y

1

2

1

2

S 2

S 1

A

J 1

C

G–Y

G–B

W–B

W–B

W–B

W–B

W–B

W–B

BR

Combination SW

Fron

t Tur

n S

igna

lLi

ght L

H

Fron

t Tur

n S

igna

lLi

ght R

H

Inte

grat

ion

Con

trol a

nd P

anel

JunctionConnector

Rea

r C

ombi

natio

nLi

ght L

H

Rea

r C

ombi

natio

nLi

ght R

H

Sid

e Tu

rnS

igna

l Lig

ht L

H

Sid

e Tu

rnS

igna

l Lig

ht R

H

Haz

ard

SW

Off

On

Turn

RH

Turn

LH

Com

bina

tion

Met

erC

6

21

1M2

7

GND

(BAT)(IG)

SCION xB (EM0091U)

63

: Parts Location


C6 30 I12 30 S1 29

C8 30 J1 31 S2 29

F5 28 R7 33

F6 28 R8 33




1F


1G

25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1J



1O

1P

1S24 Floor Wire and Instrument Panel J/B (Lower Finish Panel)

1T24 Floor Wire and Instrument Panel J/B (Lower Finish Panel)

: Ground Points








64

SCION xB (EM0091U)

Interior Light

R–W

R–W

L–Y

2

1A4

1G12

1

1G5

1S3

1G4

1S1

1

2

OFF

ON

DO

OR

1S5

1 1 1

L–Y

R

R–Y

R–W

D 7

D 8

D 6

I14

R–W

15ADOME

1

L–Y

L–Y

2

1

D 5

B 5

Doo

r

BC14

BL

R–W

W–B

1L4 1L8

IB23

D 4

C 6

7 5 4

PCTY DCTY LPR

–Y

R

R–W

R–Y

R–W

R

24 15

1

R–W R–W R–W

Bac

k D

oor

Cou

rtesy

SW

Com

bina

tion

Met

er


Doo

r C

ourte

sy S

WFr

ont L

H

Doo

r C

ourte

sy S

WFr

ont R

H

Doo

r C

ourte

sy S

WR

ear

LH

Doo

r C

ourte

sy S

WR

ear

RH

Interior Light

(BAT)

SCION xB (EM0091U)

65

: Parts Location


B5 32 D5 32 D8 32

C6 30 D6 32 I14 32

D4 30 D7 32

: Relay Blocks






1G25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)

1L25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)






: Ground Points



66

SCION xB (EM0091U)

Taillight and Illumination

10ATAIL

1M4

OFF

Tail

Head

C 8

10

13

R 2

( A) ,

R 3

( B)

2

2

1

2

1

1

4

1

4

BC2

BKEAEB

B

B

1B12 1B13 1S9

1M9

L 1

W–G

R10

G–W

W–B

G

G–O

GG G

4

W–B

W–B

W–B

W–B

BC2

B

R 9

G

R 7

W–B

G

2

1

W–B

G

2

1

G

F 6

W–B

G

1

2

BL

G

R 8

B B

W–B

W–B

5 1N

W–G

G

A10

B5

Ligh

tC

ontro

l SW

F 5

BJ

J 9

Tail

Tail

5 BE1 BE16

BE12 BE13

W–B

W–B

W–B

W–B

Com

bina

tion

SW

Fron

t Par

king

Lig

ht L

H

Fron

t Par

king

Lig

ht R

H

Junction ConnectorLi

cens

eP

late

Lig

ht

Rad

io a

nd P

laye

r

Rea

r C

ombi

natio

n Li

ght L

H

Rea

r C

ombi

natio

n Li

ght R

H

Rea

r S

ide

Mar

ker

Ligh

t LH

Rea

r S

ide

Mar

ker

Ligh

t RH

G

G

(BAT)

W–B

1K9

10

1

G

Com

bina

tion

SW

C 7

C6

A7

GND

SWG

Rad

io a

nd P

laye

rR

2( A

) , R

18( C

)

LG

IF

W–B

SCION xB (EM0091U)

67

3

1

1P1

W–G

GW

–G

1J6

1J2

W–G

G

A 7

J 6(

A), J

7( B

)

W–G

BD BD

AF

W–G

R 6

G

4

1R9

G

1

W–G

W–B

W–B

IE

14 1P

6 5

10 1F

26

27

A/T

Shi

ft Le

ver

Illum

inat

ion

Junc

tion

Con

nect

or

Rheostat

Inte

grat

ion

Con

trol a

nd P

anel

I13

Illum

inat

ion

5

4

3

10AGAUGE

1L3

W–G

R–B

R–B

JunctionConnector

J 4(A), (B)


Illum

inat

ion

1G13

1 23

15ADOME

2

1

1G12

1A4

L–Y

R–B

L–Y

R–B

L–Y

R–B

IF

21

BR

BR

1R71N2 1O2

(IG)(BAT)

4

5


W–G

1K8

G

Pas

seng

er S

eat B

elt

War

ning

Lam

p

P15

5 1K

W–B

(∗2)BC(∗1)AB

(∗1)AB(∗2)BC

CPU

68

SCION xB (EM0091U)


: Parts Location


A7 30 J4 B 31 R6 31

C6 30 J6 A 31 R7 33

C7 30 J7 B 31 R8 33

C8 30 J9 32 R9 33

F5 28 L1 32 R10 33

F6 28 P15 31 R18 31

I13 30 R2 A 31

J4 A 31 R3 B 31

: Relay Blocks







1F


1G


1J


1L




1N

1O

1P

1R





BE1 36 Floor Wire and Lamp Wire (Back Panel Center)

: Ground Points









SCION xB (EM0091U)

69

Memo

70

SCION xB (EM0091U)

Stop Light

10ASTOP

1B8

1

2

1B2

1T3

C

G–W

W–B

1

3

1

3

C

C

BK

G–Y

G–R

G–W

G–W

W–B

W–B

R 7

R 8

H 8

S 8G

–W

2

1

J 9

BJ

W–B

BL

BC24

W–B

W–B

W–B

Sto

p

Sto

p

C

G–W

2

G–W

N 4

G–W

BC23

Hig

h M

ount

edS

top

Ligh

t

JunctionConnector

Noi

se F

ilter

(S

top

Ligh

t and

Rea

r W

indo

w D

efog

ger

No.

2)

Rea

r C

ombi

natio

nLi

ght L

H

Rea

r C

ombi

natio

nLi

ght R

H

Stop Light SW

(BAT)

SCION xB (EM0091U)

71

: Parts Location


H8 32 N4 33 R8 33

J9 32 R7 33 S8 31








: Ground Points





72

SCION xB (EM0091U)

Back–Up Light

10AGAUGE

1E5

1E9

1S7

A

W–B

BJ

W–B

R–W

R–W

R–B

R–B

R–B

R–B

R–B

19 IF1

2

1 R 7

IF19

A

1

A

2

R 8

J 9

BK

W–B

Bac

k–U

p

Bac

k–U

pJu

nctio

nC

onne

ctor

Rea

r C

ombi

natio

nLi

ght L

H

Rea

r C

ombi

natio

nLi

ght R

H

(IG)

2

3

Bac

k–U

pLi

ght S

W

B 1

Bac

k–U

pLi

ght S

W

A 3

2

1

( M/T

)( M

/T)

R–W

R–B

( A/T

)( A

/T)

SCION xB (EM0091U)

73

: Parts Location


A3 28 J9 32 R8 33

B1 28 R7 33



1E 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)





: Ground Points




168

SCION xB (EM0091U)

I GROUND POINT

11E

B–W

W–B

BR


EB

BRData LinkConnector 3

(E01)

(E02)

(E03)

Front Parking LightRH

Brake Fluid LevelWarning SW


EFI Relay

Front Parking LightLH

Side Turn SignalLight RH

Front Fog Light RH

A/C Condenser FanResistor

FAN NO. 2 Relay

Skid Control ECUwith Actuator W

–B

1

1

EA

W–B

W–B

W–B

W–B

W–B

Front Wiper Motor

W–B

W–B

W–B

W–B

W–B

W–B

W–B

IF115

1P7

BR

BR

W–B

BR

BR

BR

W–B

(GND1)

(GND2)

ST RelayW–B

(SG)


W–B


W–B


W–BW

W–B

1

Front Turn SignalLight LH

W–B

Idle Air ControlValve

(E1)

BR

BR

ED

W–B

W–B

W–B

W–B

W–B

Side Turn SignalLight LH

Front Fog Light LH

EC

Front Turn SignalLight RH

BR

Canister Pump ModuleW–B 4

IB1

IF110

W–B

W–BHTR SUB1 Relay

B–W A/C MagneticValve

1

EA13

W–B

W–B

W–B

SCION xB (EM0091U)

169

I

W–B

W–B

W–B

W–B1P Door Control

Receiver

(TB)

IE

2

1P

1M

PWR Relay

FLSH Relay

Shift Lock ControlSW

(CG)

(E1)

(E2)


Rheostat

Combination SW

(ED) 1D2

1D3

1P17

1N11

W–B

W–B

W–B

W–B

W–B

W–B

W–B



1P14

1K3

1K1

W–B

Unlock Warning SW

HTR Relay

W–B

1O2

1M6W–B

W–B

15

W–B

O/D Main SW131P

W–B

(E)

IntegrationControl and Panel

Cigarette Lighter

Remote ControlMirror SW

IntegrationControl and Panel

Blower ResistorW–B

W–B

W–B

W–B

W–B

Door Lock ControlRelay

W–B

W–B

1N10

Door Lock ControlSW Front RH

Door LockControl SWFront LH

(E)W–B

W–B

W–B

(E)

W–B

W–B

W–B

W–B

W–B

W–B

W–B W–B

W–B

C

C

IG18

IC17

W–B

Combination SW

Power WindowMaster SW

Door Key Lock andUnlock SW Front LH

Door Key Lock andUnlock SW Front RH

Door UnlockDetection SWFront LH

(EW)

IH14

16W–B

C C

JunctionConnector

J10

OccupantClassification ECU

W–BIB15

1K11

1K5

(ILL–)PassengerSeat BeltWarning Lamp

W–B

W–B

(E)

170

SCION xB (EM0091U)

I GROUND POINT

IF

W–B

W–B

W–B

IG

W–B

W–B

Radio and Player

W–B

W–B

W–B

A/C Amplifier

Air Inlet ServoMotor

TRAC OFF SW

Steering Sensor

Headlight Relay

BR BR

BR

W–B

W–B

(E)

CombinationMeter

IntegrationControl andPanel

Yaw Rate Sensor

IB27

W–B


BM

B

(ES)

W–B

Rear Side MarkerLight RH

Rear Side MarkerLight LH

Rear CombinationLight RH

W–B W–B

W–B

W–B

Rear CombinationLight LH

W–B

BK

BE16

BE15

BA16

BB16

BHBI

BJ

Back Door Opener SW

(ACT–)

(E1)

W–B

High Mounted StopLight

License Plate Light

W–B

W–B

BC24

BL

W–B

W–B

W–B

W–B

W–B

W–B W–B

W–B

W–B

W–B

W–B

Back DoorCourtesy SW

W–B

W–B

W–B

W–B

W–B

W–B

Fuel Pump

Inlet Air PositionDetection SW

Fuel Sender

Back DoorLock Motor

W–BEngine ControlModule

(EC)

Buckle SW LHSeat Position Sensor

W–B

SCION xB (EM0091U)

171

I

: Parts Location


J10 32

: Relay Blocks





1D


1E


1K

25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)1M 25 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)

1N


1O

1P













BE1 36 Floor Wire and Lamp Wire (Back Panel Center)

: Ground Points




EC34 Engine Block

ED34 Engine Block




BH 36 Rear Door LH

BI 36 Rear Door RH




BM 36 Back Door LH

172

SCION xB (EM0091U)

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.

4

S1Starter

Parts Code of Location

7. 5A DRL

Code of Location

Electrical Source

Example

50A HTR SUB1

40A ABS NO.1

30A RDI

40A AM1

30A POWER

25A D/L

7.5A ECU-B

10A HAZ

10A STOP

10A TAIL

7.5A OBD

*1

* 1:10A H-LP LH / H-LP LO LH* 2:10A H-LP RH / H-LP LO RH

*2

15A AM2

30A ST

15A HORN

15A DOME

60A MAIN

120A ALTBattery 3

1

2

40A HTR 2

60A ABS 3

30A DEF 2

15A EFI 1

2

13

1 : Engine Room R/B (See Page 22)

4 : Fuse Block (F15 on See Page 30)

2 : Instrument Panel J/B (See Page 24)

[LOCATION]

SCION xB (EM0091U)

173

J

3 : Fusible Link Block (See Page 23)

15A ACC

7.5A ECU-IG

10A GAUGE

20A WIPER

15A FOG

Ignition SW(AM1) I10

R4

2

7.5A A.CHTR Relay(Point Side) 22

7.5A I/UPRear Window DefoggerRelay (Point Side) 4

174

SCION xB (EM0091U)


Engine Room R/B (See Page 22)Fuse System Page

7.5A A/CAir Conditioning

PTC Heater

164

162

10A H–LP LH/H–LP LO LHHeadlight


58

90

10A H–LP RH/H–LP LO RHHeadlight


58

90

15A AM2

ABS, TRAC and VSC

Charging

Combination Meter

Electronically Controlled Transmission and A/T Indicator

Engine Control





104

46

150

98

48

130

114

118

42

15A DOME

ABS, TRAC and VSC

Audio System

Combination Meter

Door Lock Control

Engine Control

Headlight

Interior Light

Key Reminder

Light Reminder







104

146

150

82

48

58

64

126

138

128

130

114

118

66

90

15A EFIElectronically Controlled Transmission and A/T Indicator

Engine Control

98

48

15A HORNHorn


142

90

30A RDI Radiator Fan and Condenser Fan 156

30A ST Starting and Ignition 42

40A ABS NO.1 ABS, TRAC and VSC 104

50A HTR SUB1 PTC Heater 162

Instrument Panel J/B (See Page 24)Fuse System Page

7.5A A.C Two Way Flow Heater 158

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

SCION xB (EM0091U)

175

J

Fuse System Page

7.5A ECU–B

ABS, TRAC and VSC

Multiplex Communication System (CAN)



104

110

130

118

7.5A ECU–IG

ABS, TRAC and VSC

Air Conditioning

Multiplex Communication System (CAN)

PTC Heater

Radiator Fan and Condenser Fan

Two Way Flow Heater

104

164

110

162

156

158

7.5A OBDElectronically Controlled Transmission and A/T Indicator

Engine Control

98

48

10A GAUGE

ABS, TRAC and VSC

Air Conditioning

Audio System

Back–Up Light

Charging

Combination Meter

Door Lock Control


Engine Control

Fog Light

Key Reminder

Light Reminder

Power Window

PTC Heater




Shift Lock




Turn Signal and Hazard Warning Light

Two Way Flow Heater


104

164

146

72

46

150

82

98

48

60

126

138

78

162

144

128

130

124

114

118

66

62

158

90

10A HAZ Turn Signal and Hazard Warning Light 62

10A STOP

ABS, TRAC and VSC


Engine Control

Shift Lock

Stop Light

104

98

48

124

70


176

SCION xB (EM0091U)


Fuse System Page

10A TAIL

Engine Control

Light Reminder


48

138

66

15A ACC

Audio System

Cigarette Lighter

Remote Control Mirror

146

140

136

15A FOG Fog Light 60

20A WIPERFront Wiper and Washer

Rear Wiper and Washer

74

76

25A D/LDoor Lock Control


82

90

30A DEF Rear Window Defogger 144

30A POWER Power Window 78

40A HTR

Air Conditioning

PTC Heater

Two Way Flow Heater

164

162

158

Fusible Link Block (See Page 23)Fuse System Page

60A ABS ABS, TRAC and VSC 104

60A MAIN

ABS, TRAC and VSC

Charging

Combination Meter


Engine Control





104

46

150

98

48

130

114

118

42

120A ALTABS, TRAC and VSC

Charging

104

46

Fuse Block (F15 on See Page 30)Fuse System Page

7.5A I/UP Rear Window Defogger 144


SCION xB (EM0091U)

177

Memo

178

SCION xB (EM0091U)

K CONNECTOR LIST

21

BlackA 1

1 2

GrayA 2

1 2 3 4 5

6 7 8 9

GrayA 3

12

A 4

12

BlackA 5

21

A 6

23 41

BlueA 7

2 3 4 5 6 7 81

A 8

1 2 3 4 5 6

7 8 9 101112

A B

YellowA 9

242523 26222021 2827

1 2 3 4 5 6

7 8 9 1011121314151617

1819

A B

YellowA10

1 2 3 4 5 6

7 8 9 101112

A B

YellowA11

1 2 3 4

YellowA12

1 2 3 4

YellowA13

1

A14

12

A15

12

A16

21

15 16

4

18

5

19

6

20

7

21

8

22

9

23

10

24

11

25

13

27

14

28

3

17

12

26

A17

21

13 14

3

15

4

16

5

17

6

18

7

19

8

20

9

21

10

22

11

23

12

24

A18

43

6 7

5

11

1

12

2

15

98

1413

10

YellowA19

11

1 3 4 5 6 7 8 9

13 14 15 16 17 18 19

21 23 24 25 26 27 28 29 30

20

10

22

12

2

YellowA20

43

6 7

5

11

1

12

2

15

98

1413

10

YellowA21

1 2

GrayB 1

SCION xB (EM0091U)

179

K

1 2

GrayB 2

1

2

BlackB 3

1 2

3 4

BlackB 4

23 41

B 5

1 2

B 6

1 2 3

4 5 6

B 7

1 2 3

B 8

1 2 3

654

GrayB 9

1 2

B10

1 2

BlackC 1

1 2

BlackC 2

1 2

BlackC 3

1

2

C 4

1 2

C 5

422

321 241

262362

277

288

3010

3111

3212

3313

3515

3616

3717

3818

2995

25 3414

3919

4020

C 6

7 8

1 2

12

4 5 6

9 1110

3

BlackC 7

1 2 3 4

5 6 7 8 9 10 11 12 13

C 8

1 2 3 4 5 6 7 8 9 10

BlackC 9

1 2 3 4 56 7 8 9 10

BlackC10

16 15 14 13 12 11 10 9

8 7 6 5 4 3 2 1

D 1

23 41

D 2

54321

D 3

180

SCION xB (EM0091U)

K CONNECTOR LIST

111032 121

15 161413 17

4 5 6 7 8 9

18 19 20 21 22 23 24 25 26

D 4

1

D 5

1

D 6

1

D 7

1

D 8

1 2 3 4 5 6

BlackD 9

1 2 3 4 5 6

BlackD10

6 95 8

14

7

15

4

17

21

1816

3

11 1310 12

D11

1 2

3 4 5 6

D12

1 2

BlackD13

1 2

BlackD14

1 2 3 4 5

6 7 8 9 10

GrayE 1

21

GrayE 2

1

17

292827 3126

1918

98

20

10

21

30

11

76

13 14 15 16

22 23 24

12

432 5

25

E 3

16

3231 3528

2017

9 10

34

11

65

13 14 15

23 24 26

12

321 4

27

29

18

7

30

19

8

21 22 25

33

BlackE 4

1

17

29 3428

1918

98

20

10

21

33

11

76

13 14 15 16

22 23 26

12

432 5

2724 25

30 31 32

E 5

1

19

333231 3528

2320

118 12

34

13

76

15 16 17 18

24 25 26

14

432 5

27

29

21

9

30

22

10

E 6

1 2

YellowF 1

1 2

YellowF 2

1 2

BrownF 3

SCION xB (EM0091U)

181

K

1 2

BrownF 4

1 2 3

F 5

1 2 3

F 6

1 2 3

4 5

BlackF 7

BlackF 8

(See Page 23)

11

BlackF 9

35

1 2

F10

1 2 3

F11

1

2

GrayF12

1

2

GrayF13

1 2 3

4 5

Dark GrayF14

1 2 3 4

F15

1 2

YellowF16

1 2

YellowF17

1 2 3

BlackG 1

1

G 2

1

2 3

H 1

1

2 3

H 2

1 2

3 4

GrayH 3

1

BlackH 4

1

BlackH 5

35

1 2

H 6

21

3 4

GrayH 7

1 2

GrayH 8

1 2 3

BlackI 1

1 2 3 4

BlackI 2

1 2 3 4

GrayI 3

1 2 3 4

BlackI 4

1 2 3 4

GrayI 5

1 2

BlackI 6

1 2

GrayI 7

1 2

BlackI 8

1 2

GrayI 9

1 24 5

36

I10

1 32

I11

1 2 3 4

GrayI12

1 2 3 4 5

6 7 8 9 10

I13

182

SCION xB (EM0091U)

K CONNECTOR LIST

*1 : Before Dec. 2005 Production

A A B C CA A B B B B C C

A A B C CA A B B B B C C

A A B C CA A B B B B C CA A B B C C

D D E E F F

A A B B C C

D D E E F F

A

BB

AA

BB

AA

BB

AA

BB

AA

BB

A A

B

C

FF

CC

FF

CB

EE

BB

EE

BA

DD

A A

D

A A B B C C

D D E E F F

A A B C CA A B B B B C C A A B B C C

D D E E F F

C

EE

CC

EE

CC

EE

BB

ED

BA

DD

A A

D

1

2

I14

1 32

I15 J 1 Black

J 2 Black

J 3

(*1)J 4

(*2)J 4 J 5

J 6 J 7 J 8 J 9

J10

1 2

BlackK 1

1 2

BlueL 1

54321

BlackM 1

1 2

GrayN 1

1 2

N 2

1 2

N 3

1 2

N 4

1

GrayO 1

1

O 2

9

1 2 3

16

4 5 86 7

1011 15141213

O 3

1

6

2

7

3

8 9 10 11 12 13 14

4

15

5

16

O 4

1 2 3 4 57 8 9 101112

6

BlackO 5

1 2 3 4 57 8 9 101112

6

GrayO 6

1 2 3

BlackO 7

*2 : From Dec. 2005 Production

SCION xB (EM0091U)

183

K

1 2 3

BlackO 8

1 2 3

BlackO 9

1 2 3

BlackO10

1 2 3

BlackP 1

1 2 3

BlackP 2

1

P 3

1 2

P 5

1 2 3 4 5

P 6

1 2 3 4 5

P 7

1 2 3 4 5

P 8

1 2

3 4 5 6

P 9

1 2

3 4 5 6

P10

1 2

P11

1 2

P12

21

YellowP13

21

YellowP14

1 2 3 4 5 6

P15

21

GrayR 1

1 2 3 4

5 6 7 8 9 10

BlueR 2

1 2

3 4 5 6

R 3

3

5

1 2

R 4

1 2 3 4 5 6 7 8 9 10

R 5

1 2

3 4 5 6

R 6

1 2

3 4 5 6

R 7

1 2

3 4 5 6

R 8

1 2

R 9

1 2

R10

1

2

R11

1

2

R12

1

BlackR13

1

BlackR14

1 2

R15

12

34

56

R16

184

SCION xB (EM0091U)

K CONNECTOR LIST

12

34

56

R17

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 19 20

R18

1 2

BlackS 1

1 2

BlackS 2

31 32

213 4 5 6 7 8 9 10 11 12 13 14 15 1617 18 19 20 21 22 23 24 25 26 27 28 29 30

33 34 35 36 37 38 39 40 41 42 43 44 45 46

BlackS 3

1

S 4

1

BlackS 5

54321

S 6

10987654321

GrayS 7

1

3

2

4

BlackS 8

1 2 3 4

GrayS 9

1 2 3

BlackT 1

1 2

BlackT 2

1 2 3 4 5

BlackT 3

1 2

BlueT 4

1 2

BlueT 5

1 2

U 1

1 2

BlackV 1

1 2

BlackV 2

1 2 3

BlackW 1

54321

BlackY 1

SCION xB (EM0091U)

185

Memo

186

SCION xB (EM0091U)

K CONNECTOR LIST

1 2

3 4

8 9

13

5

10

14

6 7

11 12

15

1

34

89

13

5

10

14

2

67

1112

15

1 2 12

1 2 3 4

5 6 7 8 9

10 11 12 13 14

1234

56789

1011121314

11

2221

109

2019

87

1817

65

1615

43

1413

1 2

12

9

20

8

19

7

18

6

17

5

16

4

15

3

14

1

12

11

22

2

13

10

21

2 1

4 31 2

3 4

7

1413

65

1211

43

109

21

8

7

14

6

13

5

12

4

11

3

10

2

9

1

81 2 3 4 56 7 8 9 10 11 12 13

1234513 6789101112

EA1 EB1 Gray

IA1

IA2 IA3 Yellow

IB1 Gray IB2 Gray

SCION xB (EM0091U)

187

K

23 41 12

4 3

1 2 34 5 6 7 8

1238 7 6 5 4

1 2 3 4 5 6 7 8 9 10

11 1213141516171819 20

12345678910

11121314151617181920

7

1413

65

1211

43

109

21

8

7

14

6

13

5

12

4

11

3

10

2

9

1

8

1 2 3

4 5 6 7 8 9

3 2 1

456789

7

1413

65

1211

43

109

21

8

7

14

6

13

5

12

4

11

3

10

2

9

1

8

1 2

3 4 5 6123456

1 2

3 4

5 6

12

34

56

1 2

3 4

5 6

12

34

56

1 2 3

4 5 6 7 8 9

3 2 1

456789

7

1413

65

1211

43

109

21

8

7

14

6

13

5

12

4

11

3

10

2

9

1

8

IE1 BlueID1

IF1 IF2

IG1 IG2

IH1 BA1 BB1

IC1 IC2

188

SCION xB (EM0091U)

K CONNECTOR LIST

1 2

3 4

5 6

12

34

56

23 41 12

4 3

1 1

1 2 3

4 5 6

123

456

BC2 GrayBC1 BD1

BE1

SCION xB (EM0091U)

189

Memo


Code Part Name Part Number Code Part Name Part Number

SCION xB (EM0091U)

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

190

A 1 A/C Condenser Fan Resistor 90980–10928

A 2 A/C Magnetic Valve 90980–11156

A 3

A/T Indicator Light SW

90980–11784A 3 Back–Up Light SW 90980–11784

Park/Neutral Position SW

A 4 ABS Speed Sensor Front LH90980–11002

A 5 ABS Speed Sensor Front RH90980–11002

A 6 A/C Thermistor 90980–11918

A 7A/T Shift Lever Illumination

90980–10795A 7O/D Main SW

90980–10795

A 8 Air Inlet Servo Motor 90980–11989

A 9 Airbag Sensor Assembly 90980–11869

A10 Airbag Sensor Assembly 90980–11872


A12Airbag Squib (Front Passenger’s AirbagAssembly) 90980–12160

A13 Airbag Squib (Steering Wheel Pad)90980–12160

A14 Antenna Amplifier 90980–10870

A15 ABS Speed Sensor Rear LH90980–10859

A16 ABS Speed Sensor Rear RH90980–10859

A17 A/C Amplifier 90980–12410

A18 A/C Amplifier 90980–12200




B 1 Back–Up Light SW 90980–11250

B 2 Brake Fluid Level Warning SW 90980–11207

B 3 Blower Motor 90980–10214

B 4 Blower Resistor 90980–11136

B 5Back Door Courtesy SW

90980–10795B 5Back Door Lock Motor

90980–10795

B 6 Back Door Opener SW 90980–12063

B 7Buckle SW LH

90980–12257B 7Seat Position Sensor

90980–12257

B 8Buckle SW RH

90980–11020B 8Occupant Detection Sensor

90980–11020

B 9Buck SW LH

90980–11194B 9Seat Position Sensor

90980–11194

B10 Buck SW RH 90980–11156

C 1 Camshaft Position Sensor 90980–10947

C 2 Camshaft Timing Oil Control Valve 90980–11162

C 3 Crankshaft Position Sensor 90980–12028

C 4 Cigarette Lighter 90980–10760

C 5 Clutch Start SW 90980–10825

C 6 Combination Meter 90980–12169

C 7 Combination SW 90980–12183



C10 Canister Pump Module 90980–12380

D 1 Data Link Connector 3 90980–11978

D 2Defroster Mode Detection SW

90980–10795D 2Inlet Air Position Detection SW

90980–10795

D 3 Door Control Receiver 90980–11909

D 4 Door Lock Control Relay 90980–12203

D 5 Door Courtesy SW Front LH

90980–10871D 6 Door Courtesy SW Front RH

90980–10871D 7 Door Courtesy SW Rear LH

90980–10871

D 8 Door Courtesy SW Rear RH

D 9

Door Key Lock and Unlock SW Front LH

90980–11858

D 9 Door Lock Motor Front LH

90980–11858Door Unlock Detection SW Front LH 90980–11858

D10Door Key Lock and Unlock SW Front RH

D10Door Lock Motor Front RH

D11Door Lock Control SW Front LH

90980–12122D11Power Window Master SW

90980–12122

D12 Door Lock Control SW Front RH 90980–10797

D13 Door Lock Motor Rear LH90980–11019

D14 Door Lock Motor Rear RH90980–11019

E 1Electronically Controlled TransmissionSolenoid 90980–11658

E 2 Engine Coolant Temp. Sensor 90980–10735

E 3 Engine Control Module 90980–12142




F 1 Front Airbag Sensor LH90980–12401

F 2 Front Airbag Sensor RH90980–12401

F 3 Front Fog Light LH90980–11096

F 4 Front Fog Light RH90980–11096

F 5Front Parking Light LH

90980–11020

F 5Front Turn Signal Light LH

90980–11020

F 6Front Parking Light RH

90980–11020

F 6Front Turn Signal Light RH

F 7 Front Wiper Motor 90980–11599

F 8 Fusible Link Block 82620–52011

F 9 Fusible Link Block 90980–11775

F10 Front Fog Light Relay 82660–20340

F11 Front Fog Light SW 90980–10489

F12 Front Door Speaker LH90980–10935

F13 Front Door Speaker RH90980–10935

F14Fuel Pump

90980–11077F14Fuel Sender

90980–11077

L


SCION xB (EM0091U)

191

F15 Fuse Block 82610–20080

F16 Front Airbag Sensor LH90980–12490

F17 Front Airbag Sensor RH90980–12490

G 1 Generator 90980–11349

G 2 Generator 90980–09373

H 1 Headlight LH90980–11314

H 2 Headlight RH90980–11314

H 3 Heated Oxygen Sensor (Bank 1 Sensor 1) 90980–10869

H 4 Horn (High)90980–10619

H 5 Horn (Low)90980–10619

H 6 Headlight Relay 82660–20340

H 7 Heated Oxygen Sensor (Bank 1 Sensor 2) 90980–11028

H 8 High Mounted Stop Light 90980–11148

I 1 Idle Air Control Valve 90980–11145

I 2 Ignition Coil and Igniter No.1

90980–11885I 3 Ignition Coil and Igniter No.2

90980–11885I 4 Ignition Coil and Igniter No.3

90980–11885

I 5 Ignition Coil and Igniter No.4

I 6 Injector No.1

90980–11875I 7 Injector No.2

90980–11875I 8 Injector No.3

90980–11875

I 9 Injector No.4

I10 Ignition SW 90980–11778

I11 Integration Control and Panel 90980–10908



I14 Interior Light 90980–10935


J 1 Junction Connector 90980–11542

J 2 Junction Connector90980–11661






J 8 Junction Connector

90980–11542J 9 Junction Connector 90980–11542

J10 Junction Connector

K 1 Knock Sensor (Bank 1) 90980–11875

L 1 License Plate Light 90980–10825

M 1 Mass Air Flow Meter 90980–11317

N 1 Noise Filter (Ignition) 90980–10843

N 2 Noise Filter (Rear Window Defogger No.1)

90980–10916N 3 Noise Filter (Fuel Pump)

90980–10916

N 4Noise Filter (Stop Light and Rear WindowDefogger No.2)

90980–10916

O 1 Oil Pressure SW 90980–11363

O 2 Option Connector (TVIP) 90980–10871

O 3 Option Connector (IPOD Unit) 90980–12553

O 4 Option Connector (Radio and Player) 90980–12423

O 5 Occupamt Classification ECU 90980–12356

O 6 Occupamt Classification ECU 90980–12357

O 7 Occupamt Classification Sensor Front LH

90980–12353O 8 Occupamt Classification Sensor Rear LH

90980–12353O 9 Occupamt Classification Sensor Front RH

90980–12353

O10 Occupamt Classification Sensor Rear RH

P 1 Power Steering Oil Pressure Sensor90980–10845

P 2 Pressure Sensor90980–10845

P 3 Parking Brake SW 90980–10871

P 5 PTC Heater 90980–10903

P 6 Power Window Control SW Front RH

90980–10789P 7 Power Window Control SW Rear LH 90980–10789

P 8 Power Window Control SW Rear RH

P 9 Power Window Motor Front LH90980–10797

P10 Power Window Motor Front RH90980–10797

P11 Power Window Motor Rear LH90980–10860

P12 Power Window Motor Rear RH90980–10860

P13 Pretensioner LH90980–12253

P14 Pretensioner RH90980–12253

P15 Passenger Seat Belt Warnning Lamp 90980–11986

R 1 Radiator Fan Motor 90980–10928

R 2 Radio and Player 90980–10997

R 3 Radio and Player 90980–10996

R 4 Rear Window Defogger Relay 82660–20340

R 5 Remote Control Mirror SW 90980–11657

R 6 Rheostat

90980–10797R 7 Rear Combination Light LH 90980–10797

R 8 Rear Combination Light RH

R 9 Rear Side Marker Light LH90980–11250

R10 Rear Side Marker Light RH90980–11250

R11 Rear Speaker LH90980–10935

R12 Rear Speaker RH90980–10935

R13 Rear Window Defogger90980–11853

R14 Rear Window Defogger90980–11853

R15 Rear Wiper Motor 90980–10860

R16 Remote Control Mirror LH90980–11587

R17 Remote Control Mirror RH90980–11587

R18 Radio and Player 90980–12460

S 1 Side Turn Signal Light LH90980–11162

S 2 Side Turn Signal Light RH90980–11162

S 3 Skid Control ECU with Actuator 90980–12297

S 4 Starter 90980–09506

S 5 Starter 90980–11400



SCION xB (EM0091U)

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

192

S 6 Shift Lock Control SW 90980–11909

S 7 Steering Sensor 90980–12162

S 8 Stop Light SW 90980–11118

S 9 Stereo Jack Adapter 82824–21030

T 1 Throttle Position Sensor 90980–11261

T 2 Turbine Speed Sensor 90980–11156

T 3 TRAC OFF SW 90980–10631

T 4 Tweeter LH

90980–10860T 5 Tweeter RH 90980–10860

U 1 Unlock Warning SW

V 1 VSV (Purge) 90980–11156

V 2 VSC Buzzer 90980–10906

W 1 Washer Motor 90980–10981

Y 1 Yaw Rate Sensor 90980–11904

Memo

SCION xB (EM0091U)

193

SC

ION

xB (E

M0091U

)197 M

1 2 3 4

1 xB

IF1

I 4

9 IF1N

112

B–Y

B

2

A3A4

1

2

60A M

AIN

W–R

W–L

W–L

W–R

B–L

B–G

7 1A

1 1O

1

15A A

M2

120A A

LT

1

AM25 6

2AM1

ST2

IG2

IG1

ACC

1

1O8

1C1

2

1

1

30A S

T

40A A

M1

B1

B

B–Y

B

IG

M

B1

A2

A3

L

A1

1O4

1E5

11

I10

I 5

6 1O 1G8

4 IF1

2

1

3

5

1 1

1

5 EA1

1 B1A

1

EB

EA1

1E6 1A3

1O7

1 EA1

A 3

11 EA1

ED Engine Block

1

B

W–B

B–Y

B–Y

B–R

B–R

G–R

B–R

G–B

B–R

G–O

B–R

G–Y

Y

W–B

W–B

W–B

Y Y

W–B

W–B

Y

B–R

B–R

YY

R–B

B

B

B B–R

B–R

Y Y

W W–B

B–R B–R B–R

B–W

B–W B–Y

B–Y

B–R

R–B

L

G–B L

L

B–R

B

Battery

B–R

STRelay

4

(M/T )

B–Y

(A/T )

P

N

1 3 1 3 1 3 1 3

4 2 4 2 4 2 4 2

Engine Control Module<2–10>


Engine C

ontrolM

odule<2–8>

A/C

Am

plifier<

18–3>

10A G

AU

GE

B–Y

9

6

1

P o w e r S o u rc e S ta r tin g a n d Ig n it io n C h a rg in g

13 IF2

Front LeftFender Apron

(M/T)

2

1 C 5

W–B

Y

B(A

/T )B

(A/T )

B

B–Y

W–B

I 2

C 6B

(A/T)

(M/T )

Engine ControlModule<2–8>

I 3

16

B(M/T)

B–Y

(M/T )

15 EA1

Charge

40

F 8 (A ), F 9 (B )

Park/N

eutralP

osition SW

Clutch S

tart SW

Com

bination Meter

Fusible Link Block

Generator

Ignition Coil and

Igniter No. 1

Ignition Coil and

Igniter No. 2

Ignition Coil and

Igniter No. 3

Ignition Coil and

Igniter No. 4

Ignition SW

Noise Filter

(Ignition )

Starter

G 1(A), G 2(B)

S 4 (A ), S 5 (B )

IF24

B(A/T)

Engine C

ontrolM

odule<2–8>

11 IF2

B–Y

SC

ION

xB (E

M0091U

)198

M O

VE

RA

LL

EL

EC

TR

ICA

L W

IRIN

G D

IAG

RA

M

1 2 3 4

2 xB (Cont. next page)

N 3

F 8

20

1

2

60A M

AIN

4 3

W–R

W–R

B–L

B–G

7 1A

1 1O

1

15A A

M2

120A A

LT

1

AM25 6

ST2

IG2

1C1

P o w e r S o u rc e E n g in e C o n tro l

2

1 2

1

3

5

1

15A E

FI

1 1

1 1

1H7

EBFront LeftFender Apron

11 1A

2

1

I10 5 1O

Rear QuarterPanel Inner LH

BJ

5

4

M

86 1T 9 1H 1H

EA14

4 1P

7. 5A O

BD

W–B

3W–B

B–Y

B–Y

5

C 6

B

GR

Y–B

Y–R

B–Y

B–R

Y–G

B–R

G–R

B

W–R

B

W–B

G–R

B–R

Y–G

Y–R

Y–B

B–R

B–Y

B–Y

EFI R

elay

C/OPNRelay

W–RBattery

B–R

2340

Water Tem

p. C

ool

Water Tem

p. H

ot

B–R

1G8

B–R

Malfunction

Indicator Lamp

1

B–R

F14

Combination Meter

Fusible Link Block

Fuel Pum

p

Ignition SW

Noise Filter

(Fuel Pum

p )

6 1O

B–R

GR

B–RB–R

A

B

C

D

E

F

G

H

I

J

K

SC

ION

xB (E

M0091U

)199 M

7 865

(Cont. next page)2 xB (Cont' d)

SG CANL

BR

B

BR

TAC

P–B

Park/N

eutral Position S

W (A

/T )<1–2>

BR

BR

B

(∗1)

Airbag SensorAssembly<14–3><19–3>

9

TCSIL

P–B

W–R

W–R

B

G–R

B–R

Y–G

W

BAT

16

Skid C

ontrol EC

Uw

ith Actuator

<13–5>

Airbag S

ensorA

ssembly

<14–3>

<19–3>

P–B

P–B

13

14 1H

3 1P

7

5 1P

CG

4

W–B

W–B

1P17

2 1O

B

5

B

E n g in e C o n tro l

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

(A/T )

Clutch S

tart SW

(M/T )<

1–2>B

–Y

A12

Ignition SW

<1–1>

B

A30

Generator<

1–4>L

C10

Com

bination Meter<

16–3>V

–W

B8

Stop Light S

W<

9–3>G

–W

B4

(∗1)

(∗1 )

(∗1 )

B B B

11313

322424

B–R

B

B–R

L

B–R

B–R

B–R

B–R

B–R

Y–B

Y–R

B–Y

B–O

B–Y

B–W

B–L

B–R

G–R

B–R

W–G

B

BR

BR 13

B

B

B

BR

J 6 (A ), J 7 (B )

BR

B–RB–R

B–R

B–Y

Y–R

Y–B

GR

B

G–R

B–R

9 A

1D4

WFSE

C1 C5C2C25C21D23

1

2

A1 A25

B18 B29 A3

IA114

D1D2D5D6

1

2

1

2

1

22

1

IF11

1P7

1 1E

EC Engine BlockLeft KickPanel

IE

1 B

15

B

14 IF2

IF2

BR

L

IF2

B–R

1 IF2

(∗1 )

(∗1 )

(∗1)

1B51D1

WW B

OX HT

E1 +B

OX HT

E1 +B

DUTY

VISC GND

TC TACH COOL HOT BATT

IGSW FC+B PRG OX1A HT1A OX1B HT1B RSD

# 10 # 20 # 30 # 40 STA NSW ALT SPD STP

∗ 1 : Shielded

BR

W

R

Com

binationM

eter<16–3>

15 IF1 Skid Control ECUwith Actuator<13–5>

6

CANH

14

C B

A A A A

I 1

(∗1)

V 1

R

D 1

H 7

H 3

I 6 I 7 I 8 I 9



Heated O

xygen Sensor

(Bank 1 S

ensor 1 )

Heated O

xygen Sensor

(Bank 1 S

ensor 2 )

Idle Air C

ontrol Valve

Injector No. 1

Injector No. 2

Injector No. 3

Injector No. 4

JunctionC

onnector

VS

V (P

urge )

TS

R–L

12

Skid C

ontrol EC

Uw

ith Actuator

<13–5>

JunctionConnector

J 4(A), (B)

Multiplex

Com

munication

System

(CA

N)<

13–12>

GR

A8

IA27

MREL

30 B

W +B2

A2

B–R

Y–G

GR

B–Y

9 IF2

B33

CANH

B34

CANL

Multiplex C

omm

unicationS

ystem (C

AN

)<13–11>

B–R

WW

2

17

Occupant

Classification

EC

U<

19–6>

1H12

W

E B (∗3)

E A (∗2)

E A (∗2)

E B (∗3)


A

B

C

D

E

F

G

H

I

J

K

A

B

C

D

E

SC

ION

xB (E

M0091U

)200

M O

VE

RA

LL

EL

EC

TR

ICA

L W

IRIN

G D

IAG

RA

M

9 10 11 12

2 xB (Cont' d)

R–W

BR

(∗1 )

BR

A

Com

bination SW

<6–2>

G

2

1

26 C

ED

6 C 4 D7 C

20 C 18 C

BR

BR

BR

BR

Y–R

R–W

R–W

B

BR

(∗1)

3 1

B

2

(∗1 )

2

1

13 C 12 C

R–Y

R–B

R–BIgnition Coil and

Igniters<1–3><1–4>

BR

B


C23C17

G–Y

G–O

C16

G–B

C15

G–R

Y

C1415 A

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ELS1 IGT4 IGT3 IGT2 IGT1 IGF OC1+ OC1–

G2+ E01 E02 E03

VTA1 VC

14

BR

BR

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W

W

O

W

BR

BR

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1

2

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(∗1)

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FAN

NO

. 2R

elay<17–2>

T 1

C 1

B

BR

Engine BlockECEngine Block

C 2

BR

B

BR

W

Cam

shaft Position

Sensor

Cam

shaft Timing O

ilC

ontrol Valve

Crankshaft P

ositionS

ensor

Throttle Position

Sensor

C 3

BR

E2

VCVTA

B7

NEO

VS

kid Control E

CU

with A

ctuator<13–4>

B32

F/PS

BB

F/PS

Airbag S

ensorA

ssembly

<14–3>

<19–3>

FANL

13

Y–R

A

FAN

NO

. 1R

elay<17–2>

Rear W

indowD

efogger Relay <

17–4>B

3 B

ELS2

B–Y

2

7. 5A I/U

P

1

Fuse Block

F15

30 C

EKNK

EB12

B

W–B

∗ 1 : Shielded

W

B

IF27

2

1

Knock S

ensor(B

ank 1 )

K 1

W–B

B

BR

B

BR

R–WIF282 IB11 IB1

IB13

4

R–W

R–W

Canister PressureSensor

3

31 A

RR

PTMK

IB19

BRBR

2

5 A

VPMP

PP

8

IB110

BB

9

8 IB1

6 A

MPMP

VV

1

M

W–B

B

B

6

Canister P

ump M

oduleC

10

Leak Detection Pump

Vent V

alve

VCCVOUTGND+BGND

+B SGND

(Cont. next page)

4 IB1

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

A

B

C

D

E

A

B

C

D

E

F

SC

ION

xB (E

M0091U

)201 M

13 161514

2 xB (Cont' d)

30D29 D 28 D

28 C

1

32 D 32 C

BR BR

BR

Y–B V P BR

B

R–L

BR

BR

BR

1

3 2

4 2 3 5

1

VC VOUT

GND

22 A

W–B

THA E2G VG E2

+B

THA E2G VG EC

PSP THW E2

BR

R–W Y

BR

P 1

M 1

Mass A

ir FlowM

eter

Pow

er Steering O

ilP

ressure Sensor

10 IF1

W–B

W–B

EDIG

IF120

Right KickPanel

EngineBlock

B B

BR

B

W–B

BR

B

R–W

2

Engine C

oolant Temp. S

ensorE 2


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

A

B

C

D

E

F

SC

ION

xB (E

M0091U

)202

M O

VE

RA

LL

EL

EC

TR

ICA

L W

IRIN

G D

IAG

RA

M

1 2 3 4


BB

1E9

17

1E4

C

THW

4 B

1

2

60A M

AIN

4 3

W–R

W–L

W–L

W–R

B–L

B–G

7 1A

1 1O

1

15A A

M2

120A A

LT

1

AM25 6

2AM1

ST2

IG2

IG1

ACC

1

1O8

1C1

P o w e r S o u rc e E le c tro n ic a lly C o n tro lle d T ra n s m is s io n a n d A /T In d ic a to r

18

2

12

1

3

5

1

15A E

FI

1 1

1 1

1O6

EB Front LeftFender Apron

1H8

1A11

1 A 9 D D8 19 D 12 D D13 11 D 24 D

3 A

C28

14 IA1

35 D D27

2

1

7 C 6 C 4 D

ECEngineBlock

4

6

40A A

M1

4

2

IE

1P13

1O2

IF156 IF119 IF1

3 1E

11 B 10 B 9 B21 B

1O4

5 1E

10AGAUGE

G–R

16 1G

W–G

W–R

B–R

W–L

W G Y–G

BR

BR

BR

BR

BR

W–B

W–B

W–B

B–Y

W–B

B–Y

B–R

R B

R–Y

G–W

G–R

R–W

B

G

G–W

R–W

GR

BR

R–W

R–BB–Y

B

B–Y

B–Y

B–Y

5 10 2 3 8 4 1

6

12 A 18 C 20 C 32 C

VC

B–Y

9 IF1

R–B

R–B

17 1G

EFI R

elay

1H

G–B

2

22

W–B

1

8B30

S1 S2 ST SLT+ SLT– SL OTW B Y

G

LG

OO

GR

E2

A

BR

A3

R–Y

T 2

+B S1 S2 ST SLT+ SLT– SL THO1 E2

BATT

13 1H

NT+ NT– R D 2 L

E01 E02 E03 E1 EC ODMS

Battery

1E2

16 1H

7 IF1

R–Y

1G8

1H

B–R

1G

F 8

E 1

1G1

EDEngineBlock

6

I10

Engine Control System<2–6><2–8><2–12><2–13>

VTA1STASPDTCSTPNSW

8 IF116 IF1

G–W

GRR

G–W

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

R–W

GR

J 6 (A ), J 7 (B )

R–Y

G–R

R

A 33

845 721

LL2LDLNLRLPL

A/T Indicator Light S

W

O/D

Main S

W

Electronically Controlled TransmissionSolenoid


Fusible Link Block

Ignition SW

Junction ConnectorTurbine S

peed Sensor

A 7

G–R

R–Y

GR

R–W

R

B14

ODLP

G–O

B–R

E B

E A E A

R

RR

Skid Control ECUwith Actuator<13–5>

G–O

Left KickPanel

8 A

GR

MREL

33 B

CANH

34 B

CANL

Multiplex C

omm

unicationS

ystem (C

AN

)<13–11>

7 IA2

GR

GR

RB

2 A

+B2

B–R

IGRightKickPanel

B–R

A

B

C

D

E

F

G

H

SC

ION

xB (E

M0091U

)203 M

7 865

3 xB (Cont' d)

E le c tro n ic a lly C o n tro lle d T ra n s m is s io n a n d A /T In d ic a to r

406 7 8 9 10 11

12

O/D

OFF

L2DNRP

IF Instrument PanelBrace LH

21

BR

R–W

GR

R–Y

G–R

G–W

B–R

C 6Combination Meter

G–W

G–R

R–Y

GR

R–W

R

G–O

B–RA

B

C

D

E

F

G

H

SC

ION

xB (E

M0091U

)204

M O

VE

RA

LL

EL

EC

TR

ICA

L W

IRIN

G D

IAG

RA

M

1 2 3 4

4 xB

3

60A M

AIN

2

1

5

3

Right KickPanel

IG

OFF

Tail

Head

+B T RF H EL

Flash

Low

High

ED HL HU EL

6 1M

2 1O

1

10AH–LP LH/H–LP LO LH

1

10AH–LP RH/H–LP LO RH

1

15ADOME

1

1 2

3

1 2

3

1A9

7 1M

1A8 1B10 1B11

5 1M 1F2 1G12

1A4

B B

B A B A

Front FogLight SW<12–2>

8 9

B–L

W–B

W–B

L–YL–Y

B–YB

–W

B–Y

B–Y

B–L

B–W

B–W

B–W

B–Y

B–W

B–R B

B

R

B

1 1 1

2 2 2

11

P o w e r S o u rc e H e a d lig h t

Battery

5 IA2

Door Lock C

ontrolR

elay<11–8>

Light Control SW Dimmer SW

IE

BB

14

B–W

1

Beam

Left KickPanel

F 8

H 6

J 6(A), J 7(B)

H 1 H 2

C 8

C 6W

–B

CombinationMeter

Combination SW

Fusible LinkBlock

Headlight LH Headlight RH

Headlight Relay

Junction Connector

SC

ION

xB (E

M0091U

)205 M

1 2 3 4

5 xB

5

W–R

10

120AALT

60AMAIN

43

1C1

B–G

40A A

M1

10A H

AZ

1O8

Battery

1

15A H

OR

N

1

2 1M

B–L

4 1O

1

ACC

IG1AM1 2

G–B

10AGAUGE

1M3 1M1

1 1

5 6

7

LH

RH

6

G–Y

G–B

8

1J4 1B7 1B6

G–B

EB Front RightFender Apron

W–B

2

3

2

3

EA

G–Y

W–B

3 2

1

5

1

5

1S8 1T5

G–B

G–Y

BJ

W–B

W–B

13

1F14 1F9

G–B

G–Y

1O2

Left KickPanel

W–B

W–B

W–B

FLSH Relay

4 1

+B IG EL ER

EHW LL LR

W–L

G–W

B–Y

G–W

2

1

3

5

11

HORNRelay

11

G–W

W–R

4 IA1

G–R

P o w e r S o u rc e T u rn S ig n a l a n d H a z a rd W a rn in g L ig h t H o rn

Door Lock C

ontrolR

elay<11–7>

G–O

22

W–B

7

GND

TL TB TR

Hazard

SW

2

1

Left KickPanel

IE

G–O

1G

IE

W–B

Door Lock

Control R

elay<11–7>

9

1

1 1H

G–W

G–W

G–W

G–O

W–R

W–R

18

1P

W–B

W–B

W–B

A

A

C

C

1

2

J 1

1

2

J 1

S 2

CAG–B

F 5

G–Y

W–B

W–B

H 4

C 8

1

G–R

R 7


R 8

W–B

C 7 (A ), (B )

Rear QuarterPanel Inner RH

BK

H 5

I10

G–Y

C 6

I12

CombinationMeter

Com

bination SW

Combination SW

Front Turn Signal Light

LH Front Turn Signal Light R

H

Horn (H

igh )

Horn (Low

)

Integration Control and P

anel

Ignition SW

JunctionC

onnector

JunctionC

onnector

Rear C

ombination Light LH

Rear C

ombination Light R

H

Side Turn S

ignal Light LH

Side Turn S

ignal Light RH

S 1

F 6

Turn

Turn Horn

Turn

On

Off

RearQuarterPanelInner LH

IF InstrumentPanel BraceLH

21

BR

RHLH

Fusible LinkB

lock

F 8


6 B (∗2)

1 A (∗1)

JunctionConnector

J 4(A), (B)

B B (∗2)

C A (∗1)

C A

B B

C A (∗1)

B B (∗2)

SC

ION

xB (E

M0091U

)206

M O

VE

RA

LL

EL

EC

TR

ICA

L W

IRIN

G D

IAG

RA

M

1 2 3 4


2

1

2

2 3

B

1

G

R 9

1

W–B

G

BE1

Battery

4

120A A

LTB

–G

1M4

10A TA

IL

1C1

1B12 1B13 1S9


BKRear QuarterPanel Inner LH

2

1

GW

–B

G–O

W–B

G

GGW

–B

W–B

GW

–B

B

Back DoorCenter

5

R 7


R 8

P o w e r S o u rc e T a illig h t a n d Illu m in a tio n

2

W–B

2

B B

1

4

1

4

W–B

F 8

F 5

EA Front RightFender Apron

OFF

Tail

Head

+B T

13

10

BJ

J 9

W–B

BC2

4BC2

BE1

G

BE1

W–B

2

G

W–B

1

GG

B

BE1

G–W

R10

W–B

BL

F 6 L 1

W–BW–B

6

C 8

W–B

Light Control

SW

Com

bination SW

Front Parking Light LH

Tail

Front Parking Light R

H

Fusible Link Block

Junction Connector

License Plate Light

Rear C

ombination

Light LH

Rear C

ombination

Light RH

Rear S

ide Marker

Light LH

Rear S

ide Marker

Light RH

Tail

40A A

M1

2

1

1O8

G

1M9

1

ACC

IG1AM1 2

Ignition SWI10

W–L

B–Y

60A M

AIN

1

1

15A D

OM

E

1

2

3

B–L

1G12

1A4

L–YL–Y

1K9

G

1R3

Engine C

ontrolM

odule <2–9>

G

L–Y

B–Y

1

10

Audio S

ystem<

15–6>

Com

bination SW

C 7

A

B

C

SC

ION

xB (E

M0091U

)207 M

7 865

6 xB (Cont' d)

5

J 6 (A ), J 7 (B )

R 2 (A ), R

3 (B ) B

W–G

A10

6

W–G

5

W–G

F

W–B

1N

3

1

1O2

14 1P

IE Left KickPanel

1F10 1P1 1N51J2

1R

G

2

G

G

G

W–B

W–G

W–G

D

26

W–G

1J6

D

A

B

A 7

B

A/T S

hift Lever Illumination

JunctionC

onnector

Radio and P

layer

Illumination


anelI13

5

4

7

B–Y

1O4

10A G

AU

GE

1L3

R–B

R–B

4

1G13

CPU

Illumination

W–G

27

3

1 23

R–B


1R9

R 6

G

Rheostat

GBR

21

IF Instrument PanelBrace LH

BR

R–B

1

R–B

P15P

assenger Seat B

eltW

arning Lamp

1K8

GW

–B

4

5

1K5

W–B

C B (∗2)

B A (∗1)

B A (∗1)

C B (∗2)

Junction ConnectorJ 4(A), (B)

T a illig h t a n d Illu m in a tio n∗ 2 : From Dec. 2005 Production∗ 1 : Before Dec. 2005 Production

B–Y

L–Y

A

B

C

SC

ION

xB (E

M0091U

)208

M O

VE

RA

LL

EL

EC

TR

ICA

L W

IRIN

G D

IAG

RA

M

1 2 3 4

7 xB

W–B

R–W

C 6

D 7

4 1A

12 1G

1

2

60A M

AIN

5

W–L

W–L

B–L

B–G

1

15A D

OM

E

120A A

LT

1

1S

AM1 IG1

ACC

1

1O8

1C1

40A A

M1

Battery

P o w e r S o u rc e In te r io r L ig h t

L–R3

1

2

4 3

1O3

15AACC

R–Y

1N6

1S1

1G4

1

3 1S

1G5

1 1 1

1

2

DO

OR

OFF

ON

2

1

B–W

R–W

R–W

R–W

R–W

R–WR

R

L–Y L–Y R–Y

R–W

L–Y L–Y

1L4

R–W

Door Lock ControlRelay<11–8>

81L

F 8

C ig a re tte L ig h te r


R

D 6

IE Left KickPanel

BL

W–B

Back DoorCenter

L–R

D 8

D 5

I10

1

4

24

1

2

R–W

I14

BC1

IB2


3

R–W

Door R

–W

C 4

R–W

CigaretteLighter

Com

bination Meter

Door Courtesy SWFront LH

Door C

ourtesy SW

Front RH

Door C

ourtesy SW

Rear LH

Door C

ourtesy SW

Rear R

H

Fusible Link Block

Ignition SW

Interior Light

Back D

oor Courtesy S

WB 5

15

SC

ION

xB (E

M0091U

)209 M

1 2 3 4

8 xB

A

20A W

IPE

R

5 7 6

W–L

W–L

B–G

120A A

LT

2AM1 IG1

ACC

1

1O8

1C1

40A A

M1

B–Y

Battery

P o w e r S o u rc e F ro n t W ip e r a n d W a s h e r

4

10 11 IA1

EA

A

B

GR–B

GR

B–R

5

W–B

3 214

W–B

GR–B

GR

B–R

W–B

M

++1+2

E

11 1N

2 1O

4

IA12 6 IA1

9

1OB

–W

IA1

1

2

10A G

AU

GE

1E5

9 IF1

2 B

3 A

2 A

1 B

1E9

7 1S

BJRear Quarter PanelInner LH

R–W

R–W

R–B

R–B

R–B

W–B

W–B

R–B

R–B

B

(A/T)

(M/T)

(A/T)

(M/T)

B a c k – U p L ig h t

19

Left KickPanel

A

BK

2

1

M

1

2

IF1

IE

1N7 1A2

S

1A5

BGG

BB

84

Rear Quarter PanelInner RH

Off

On

W EW

+S+1+2+B

INT

OFF

MIST

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HI

INT1 INT2 B1

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Washer SW

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E

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F 8

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C 9I10

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J 9

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p Light SW

Back–U

p Light SW

Combination SW

Front Wiper Motor

Fusible Link Block

Ignition SW

JunctionConnector

Rear C

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Rear C

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Front RightFender Apron

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xB (E

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Junction Connector

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Power Window MotorFront RH

Power Window MotorRear LH

Power Window MotorRear RH

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xB (E

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Left KickPanel

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xB (E

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3 IG2 2 IG2 1 IG2

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G–O

1 5 3 1 5 3

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BR

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LG–R

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LG–R

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LG–B

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HL VL M+HR VR E

1L5

1L121L11

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G–R

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W–B

L–R

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8

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120A A

LT

4

2

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1C1

B–G

Battery

1

10AGAUGE

3

B–Y

1

2

3

5

12 IA1

Front RightFender Apron

EBFront LeftFender Apron

1

2

1

2

EA

W–BG

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G–O

R–W

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R–W

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Front FogLight RH

Fusible Link Block

Front Fog LightRelay

Front Fog Light SW

Remote Control Mirror SW

Rem

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Mirror LH

Rem

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xB (E

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Front RH

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Rear LH

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Rear R

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Ignition SW


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Data Link Connector 3<2–5><2–6>

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Parking B

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JunctionC

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Left KickPanel

11

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IG1

Battery

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1O4

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1

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4

B–G

Airbag Squib(Front Passenger' s Airbag Assembly)


Seat P

osition Sensor


Com

bination Meter



Fusible Link Block

Ignition SW


SR

S

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L–Y

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SC

ION

xB (E

M0091U

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M O

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RA

LL

EL

EC

TR

ICA

L W

IRIN

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T 4 T 5

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60A M

AIN

W–L

W–L

B–L

B–G

120A A

LT

1

AM1 IG1

ACC

1

1O8

1C1

40A A

M1

Battery

P o w e r S o u rc e A u d io S y s te m

15A D

OM

E

1

1N3

1A4

1O3

15AACC

1N9

B–RL–Y

IF

RL–RL+

1 21 2

RR–RR+

W–B

W–B

B6B2 B31 B

9

L–Y

L–Y

A

L–R L–R

L–Y

Y

A7

2

3

B WR

A14

1 A 5 A2 A 6 A

3 A 4 A

ACC +B

GND FR+ FR–FL+ FL–

34

2

1

IB211

11 22

J 2(A), J 3(B)

R W

GR

A

BDB

LG LP V

P V

LG L

IB210

D

FC

1 2 1 2

P


V LG L

LLGVP

IC27 14 IG2 7 IG2

1

B

A A

C B C B

D

F B F B

A

BA B

A

B

R15

C 9

BC16

ML

B

B

B

1

W–L

2

1O

1A2

2 IB2

21 IA1

4

W–L

W–L

LL

3

B–Y

20A W

IPE

R

5 BC1

3

2

M

W 1

R e a r W ip e r a n d W a s h e r

1N11

1O2

IE

W–B

W–B

5

F 8

Antenna AmplifierCombination SW

Fusible Link Block

Front Door Speaker RHFront Door Speaker LH

Ignition SW

JunctionConnector

JunctionConnector

Radio and Player

Rear Speaker LH Rear Speaker RH

Rear Wiper Motor

Tweeter LH Tweeter RH

Washer M

otor

Left KickPanel

Washer1

ON

Washer2

+1R WR EW

OFF

Rear W

iper andW

asher SW

1T1

(Cont. next page)

O 4(D)Option Connector(Radio and Player)

SC

ION

xB (E

M0091U

)221 M

7 865

15 xB (Cont' d)

FWGD

D1

15 C

ARI

FWGD

1

Option Connector (IPOD Unit)O 3

W–B

ACID

C3 D

FWPW

4 D C

ACPW

6 D D

DOTX

8

ACID

3

9 D 7 D 10 D 11 D 12 D 13 D 14 D 16 D

DORX DOGD ACDT AUDL AUDR AGND DGND SGND

17 C

ALI ASGN

C16

AUXI

C19

SPD

C3

FWPW

4

ACPW

16

DOTX DORX DOGD ACDT AUDL AUDR AGND GGND SGND

8 9 7 10

G P V B W

(Shielded )

Y R G

(Shielded )

LG O

Radio and PlayerR2(A), R3(B), R18(C)

ALO ARO ASGN AUXO

1 2 3 4

Stereo Jack AdapterS 9

B W

(Shielded )

R

Com

binationM

eter<16–3>

6 11 12 13 14

V–W

A u d io S y s te m

O 4(D)Option Connector (Radio and Player)

11

7 C

SW1SW2

6 C

SWG

LG P

12

8 C

O

10

Combination SWC 7

AU2 EAU AU1

Volume–

Volume+

Seek–

Seek+MODE

SC

ION

xB (E

M0091U

)222

M O

VE

RA

LL

EL

EC

TR

ICA

L W

IRIN

G D

IAG

RA

M

1 2 3 4


AB

S

B–Y

B

1

2

60A M

AIN

4 3

W–R

R–B

B–R

VBR

IFInstrument PanelBrace LH

V

BR

B–Y

B

W–L

W–L

W–R

B–L

B–G

7 1A

1 1O

1

15AAM2

120A A

LT

1

1F7

1T4

3

2

Key R

eminder S

ystem<

9–3>

AM25 6

2AM1

ST2

IG2

IG1

ACC

1

1G8

1O6

4 1O

10AGAUGE

13 1G

40AAM1

1O8

1C1

SR

S S

ystem<

14–2><

19–2>

Battery

2

1

P o w e r S o u rc e C o m b in a tio n M e te r

7 IB2

BR

BR

1

2

L–YL–Y

4 1A

12 1G

1

15ADOME

L–Y

23 4030

Brake

BE

ngine Control

Module<

2–5>

21 31 25 34323533 2829

C 6

F 8

I10

F14

Combination Meter

Fusible Link Block Fuel Sender

Ignition SW

Fuel

SR

S

Belt

OD

O/Trip S

W

Buzzer

Fuel

Tachometer

Speedom

eter

VS

C S

ystem<

13–10>

VS

C S

ystem<

13–9>

36


38

Headlight

System

<4–4> B

W–B

2

1

L–Y

37

14 IA2

B

Interior LightSystem<7–1><7–2>

1

141524

B 2B

rake Fluid LevelW

arning SW

Door

Beam

VS

C S

ystem<

13–10>



V–W

LCD(ODO/Trip Clock)

CPU

Clock H

Clock M


System

<6–5>

27

Maint

Reqd

V–W

Radio and P

layer<

15–5>


D B (∗2)

D A (∗1)

D A (∗1)

D B (∗2)

D A

D B

JunctionConnector

J 4(A), (B)

1F6 3

1H

41K

V–W

V–W

V–W

Seat B

elt Warning S

ystem<

9–2><

19–3>

SC

ION

xB (E

M0091U

)223 M

7 865

16 xB (Cont' d)

C o m b in a tio n M e te r

Malfunction

Indicator Lamp

Oil P

ressure

Charging S

ystem<

1–4>

16

TRA

C O

FF

LCD

Back Light

11109

Water Tem

p. Hot

Charge

Electronically C

ontrolledTransm

ission andA

/T Indicator System

<3–5>

<3–6>

17 12

13


System

<6–5>

87

2 IF1

1

GG

Electronically C

ontrolledTransm

ission and A/T Indicator

System

<3–6>

6

54 19Turn S

ignal andH

azard Warning Light

System

<5–3>

18

O 1

26C 6Combination Meter

Oil P

ressure SW

O/D

OFF

Slip

VS

C

Engine C

ontrol System

<2–3>

20

Water Tem

p. Cool

Turn LH

Turn RH

VS

C S

ystem<

13–9>

P R N D 2 L

Illumination

3 2

Engine C

ontrolS

ystem<

2–4>

SC

ION

xB (E

M0091U

)224

M O

VE

RA

LL

EL

EC

TR

ICA

L W

IRIN

G D

IAG

RA

M

1 2 3 4

17 xB

BD1

A 1


3 1K

W–B

2

1C1 1

30ARDI

1

2

B–G

40AAM1

W–B

B

1

120A ALT

1O8

1O4

1

1

ACC

IG1AM1 2 B–Y

10AGAUGE

7. 5AECU–IG

1B3 1P11

W–L

B–R

B–R

4

Battery

2

1

3

5

11

1 1

FAN

NO

. 1R

elay

L–W

2

1

5

3

4

1 1

1 1

1

M

1

2

15 IA2

Y–R

8 1J

Y–R

W–L

1

30ADEF

2

EB

L–R

B–L

LL–R

2

1

W–B

L

W–B

W–B

B–R

1 B

1 A

B–L

1

B

BM

2 1O

3

P o w e r S o u rc e R a d ia to r F a n a n d C o n d e n s e r F a n

FAN

NO

. 2R

elay

R e a r W in d o w D e fo g g e r

5

1

2

W–L

N 2

Off

On

TimerCircuit

B–R

3

2 4B

W–B

1

1

IELeft KickPanel

IA17

R–B

IB26

N 4

R13 (A ), R

14 (B )

BW

–B

R 4

R 1

Engine C

ontrolM

odule<2–9>

I12

F 8

BC11

B B

B

A/C

Condenser Fan

Resistor

Fusible Link Block


Noise Filter

(Rear W

indow D

efogger No. 1 )

Noise Filter

(Stop Light and

Rear W

indow D

efogger No. 2 )

Radiator Fan M

otor

Rear W

indowD

efogger Relay

Rear W

indow D

efogger

I10Ignition SW

Rear WindowDefogger SW

B–R

B

Fuse Block<

2–9>

Back DoorLH

B

BB

SCION xB (EM0091U)225

Memo

SC

ION

xB (E

M0091U

)226

M O

VE

RA

LL

EL

EC

TR

ICA

L W

IRIN

G D

IAG

RA

M

1 2 3 4

18 xB

1H

B–G

1C1

2

1

8 1O

40A A

M1

Right KickPanel

IE IG

D 2

18

40A H

TR

4 1O

1 2

10AGAUGE

W–B

3

5

2

1

4 HTRRelay

1J11J71O2

7. 5AA. C

1J9

L–R

HI M2 M1

10 6 7

LO OFF

2

1

L–B

L

SW–5

J 4 (A ), (B )

Left KickPanel

1

3

Off

On

2

W–B

L–W

P o w e r S o u rc e A ir C o n d itio n in g

1

2

L–Y

L

W–B

M

L–RL–B

L–B

L–B

L–Y

L–W

W–B

W–B

IE

SW–4

B–Y

B–Y

3

4

LB

DEF

A27 26 A

I13

Battery

I10

ACC

IG1AM1

4

120A A

LT W–B

I11

B–Y

W–B

Integration Controland Panel


anel

Ignition SW

JunctionC

onnectorD

efroster Mode

Detection S

W

A/C SW

1 IH1

3 IH1 6 IH1 5 IH1 4 IH1

21 3 2 4

1 Blow

er Motor

B 3

Blower ResistorB 4

Blower SW

24 B 7 A 10 A 12 A 9 A 8 A

ALT S5–2 SG–1 PRE CANL CANH

A/C AmplifierA17(A), A18(B)

13 IA28 IA13 IA1

Pressure SensorP2

3 1 2

1

2

L–BB

–W

3 EA1

W–B


Generator

<1–4>

Multiplex C

omm

unicationS

ystem (C

AN

)<13–11>

G–B

R–W

BR

B–R

R–W

BR

B–R

O

1H11

7. 5AECU–IG

B–Y

22 A 23 A

1

B–W

BR

Left KickPanel

B–L

B–Y

TE SG–2

B–Y

W–L

Fusible Link Block

F 8

2

A/C

Thermistor

A 6

(Cont. next page)

SOL+

A13

12 IF1

L–B

A/C

Magnetic

Valve

A 2

2

1

1

1

B

50AH

TR S

UB

1

R

B–L

B–Y

B–Y

R

A A (∗1)

A B (∗2)

A B

A A

A B (∗2)

A A (∗1)


A

B

C

SC

ION

xB (E

M0091U

)227 M

7 865

18 xB (Cont' d)

14 A

B–L

IG

A16A17

A

Max C

ool SW

2

F/D S

WW

PTC1

1

IG Right KickPanel

L–B

1

1

B–W

1

3

Foot SW

1

P T C H e a te r

1

B–L

IA2

OUT–4

28

W–B

L–B

W

L–B

W L–O

L–R

L–Y

L–W

L–B

L–W

W–B

W–B

L–B

R

A

J 7

7

JunctionConnector

A20

L–W

8 132

B–L

OUT–7OUT–6

HTR SUB1Relay

SW–6 SW–9

GND–1SW–2

24

9 B

T w o W a y F lo w H e a te r

B

2

1

3

5

18

A

M ControlCircuit

B

A

2

1

ED

REC

FRS

Foot Mode S

W

P 5

A17(A), A18(B)

17

A 8

B14

I15

Air Inlet Servo Motor


A/C Amplifier

PTC

Heater

EAFrontRight FenderApron

W–B

AW

–B

Max H

ot SW

B–L

W

W

B–L

Inlet Air P

ositionD

etection SW

D 2

R

B–L

B–Y

B–L

B–L

W–B

A

B

C

SC

ION

xB (E

M0091U

)228

M O

VE

RA

LL

EL

EC

TR

ICA

L W

IRIN

G D

IAG

RA

M

1 2 3 4

19 xB

9 1D

D2–

Y–O

B

P–

P2–

3

P2+

1

1

2

60A M

AIN

W–R

B–L

7 1A

1 1O

1

40A A

M1

1

7

P o w e r S o u rc e S R S (F ro m D e c . 2 0 0 5 P ro d u c tio n )

1

1O6

34

1D5

21 B 14 B

IE

1G7

1D8

B–O B

–Y

Data LinkConnector 3<2–5><2–6>

15 B 16 B

P–B

W

TC SILLAIG2

B22

B

25 B

1O2

1D3

W–B

W–B

21

5 B 6 B

Y–B Y

3 4 1 2

1

1 2

B 2 B 2 A

Y–P

1 A

Y–G

R

4 C 5 C

Y–B Y Y–B Y

E1 D+ D– P2+ P2– PD+ PD– PP+ PP–

2

2 IA3 1 IA3

29 B 27 B

+SR –SR

W B

W B

B

Y–R

P+

P+ P–

33

I10

F 8

A19(A), A20(B), A21(C)

A13 A12 P13 P14F17

Y–G

1H10

Engine C

ontrolM

odule<2–9>

BB

1A

2

2

4 B

GSW2

D2+

1

L–Y

4

1G12

1

L–Y

15A D

OM

E

D–D+D2–

8

B–Y

W–R

4

B

Y–V

D2+

C 6

5

ACC

IG1

Battery

IG2

ST2

AM1 2

6AM2

10A G

AU

GE

1O4

13 1G

120A A

LT

1O8

1C1

2

1

15A A

M2

1W–L

4

B–G

Airbag Squib(Front Passenger' s Airbag Assembly)



Com

bination Meter


Fusible Link Block

Ignition SW


SR

S

B–Y

1

CPU

23

R–B

IF

21

BR

BR

1G8

40

B–R

(Cont. next page)

35 33 32

Buzzer

Belt

12

4 IA3 3 IA3

30 B 28 B

+SL –SL

W B

W B

F16Front AirbagSensor LH

Left KickPanel

D A D A

F B

W–R

W–R

Door Lock C

ontrol Relay

<11–7>

JunctionC

onnector

J 6 (A ), J 7 (B )

13 B

O

PBEW

17 B

R

P–AB

6

23 B

GR

PAON

3

2

R–B

PAONP–ABIND

G–W

1

C B

C B

JunctionConnector

J 4(B)

B


P15


7. 5A E

CU

–B

1R6

W–R

R–B

1L3

R–B

L–Y

B–R

W–R

R–BO

G–W

F B

F B JunctionC

onnector

J 4 (B )

W–R

W–R

13 IB1

BB

S e a t B e lt W a rn in g(F ro m D e c . 2 0 0 5 P ro d u c tio n )


B

26 B

1D2

W–B

E2

A

B

C

SC

ION

xB (E

M0091U

)229 M

7 865

19 xB (Cont' d)

B 9

14 A

L–Y

DSP+

Buckle S

W LH

1

13 A

LG–B

DSP–

6

11 A

G–W

DBE+

3

12 A

R–B

DBE–

2

Seat P

osition Sensor

W–B

4

BKRear Quarter PanelInner RH

5

12 IB1

W–R

W–R

BGND

RBE+

1

GR

O

BSWFSR+

Y

FSR–

RBE–

P

2

12 C

FSP+

13 C

FSP–

W–R

+B

6 IB1

W–R

W–R

B

IG

IEW

–B

GND

5 IB1

2 1O

1K11

W–B

W–B

Left KickPanel

Buckle SW RHB10

SGD1

SVC1

SVC1

SGD1

SIG1

SIG1

SGD3

SVC3

SVC3

SGD3

SIG3

SIG3

SGD2

SVC2

SVC2

SGD2

SIG2

SIG2

SGD4

SVC4

SVC4

SGD4

SIG4

SIG4

W

DIA

11 IB1

WD

ata Link Connector 3

<2–5>


S e a t B e lt W a rn in g(F ro m D e c . 2 0 0 5 P ro d u c tio n )

A19(A), A20(B), A21(C)Airbag Sensor Assembly

B

7 A 1 A 8 A 4 A 2 A 3 A 9 A 5 A 11 B 7 B 1 B 5 B 9 B 3 B 12 B 8 B

R SB G GR Y W W L O V R BR

2 B 6 B 10 B 4 B



O 9Occupant ClassificationSensor Front RH

O 8Occupant ClassificationSensor Rear RH

O10

LSP+ LSP– LBE+ LBE– E

SA2

A

B

C

2

4

1 2 3 4

HOW TO READ THIS SECTION

ACC

IG1

ST1

IG2

ST2

AM2

6 EA4

7 EA3

2 A 2 B

1 A 1 B

4B

5A

B

1B

EA

1

3C15

3C7

41 6

1

1

1

3

2 3

1

2

4 3

1

1

3

6

5

4

7

4 EA3

12 EA1

BO25

21 EA3

ID ECEA

1

2

1

2

1

2

1

2

16 BS1

1

2

M

EA317 1

4

8

6

9B

W

W-R

B-W

B-R

B-L B-L

B-W(22R-E)

B-W

W-R

R-G

B

BR

B

GR

Y-R

B-W

Y-R

BR-W

G

G-R

Y-R

L-Y

Y-R

G-Y

GR-B

W-BR-W

R-G

BR

W-R

W-R

Y-R

R-Y

B-W

Y-R

Y-R

W

B-R

WR W-R

W-R

W

B-L

B-W

B-W

B-W

B-R

B-R

B-R

B-R

B-R

B-R

W-R

W-R

W-R

W-R B

R

BR

W-B

W-B

R-G

Y-R

W-B

B-R

Y-R

B

Y-R

W-B

B-W

W-B

B-R

R-Y

W-R

B-W

BR

100A A

LT

40A A

M1

30A A

M2

4A

2A

1A

7

(22R-E)(2L-T)

7. 5AST

7. 5AIGN

B-W

R-G

15AEFI

R-G

FP

OX1

+B

T1

VF

B-L

(2L-T)

1 A1B

R

AM1

B-W

2

BR

E1

3

(2L-T)

(22R-E

)

(2L-T)

(2L-T)

B-W

R-G

Y-R

Y-R

Y-R

W-R W-R

B

8B

A

B

C

D

E

F

G

H

I

K

L

M

N

O

P

Q

R

S

J

1

R-Y

B

BR

GR

(22R-E)

BR-W

G

G-R

L-Y

GR-B

G-Y

W-R

(2L-T)

BR

(22R-E

)

* The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the wiring diagram section.

[A]

[B]

[C]

[D]

[E]

[G][F]

[H]

[I]

[J]

[K]

[L]

C19

A 5

H11

K 2

I 9 I11

I10

I12 F37 D 1

I 6 (A),(B)

S40 (A), S41 (B)

S38 (A), S39 (B)

2

2 2 2

B-W

Fender Apron LH

(Shielded)

EFI MAINRelay

Fender Apron LH Left Kick Panel

Starting

IntakeManifold RH

Power Source Engine Control

Circuit OpeningRelay

Air Flow Meter

HeatedOxygenSensor

Knock Sensor

Injector No.1

Injector No.3

Injector No.2

Injector No.4

Fuel Pum

p


Ignition SW

Starter Relay

Starter

Battery

Em

ission EC

U <9-8>

M O

VE

RA

LL

EL

EC

TR

ICA

L W

IRIN

G D

IAG

RA

M

194

SC

ION

xB (E

M0091U

)

M195

SC

ION

xB (E

M0091U

)

[A] : System Title

[B] : Indicates the wiring color.

Wire colors are indicated by an alphabetical code.

B = Black W = White BR = Brown

L = Blue V = Violet 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 thesecond letter indicates the color of the stripe.Example: L – Y

L(Blue)

Y(Yellow)

[C] : The position of the parts is the same as shown inthe wiring diagram and wire routing.

[D] : Indicates the pin number of the connector.The numbering system is different for femaleand male connectors.Example : Numbered in order

from upper left tolower right

Numbered in orderfrom upper right tolower left

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 distinguishit from the J/B.Example : Indicates Relay Block No.1

[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.

3C indicates thatit is insideJunction BlockNo.3

Example:

[G] : Indicates related system.

[H] : Indicates the wiring harness and wiring harnessconnector. The wiring harness with maleterminal is shown with arrows ( ).Outside numerals are pin numbers.

Female Male ( )

[I] : ( ) is used to indicate different wiring andconnector, etc. when the vehicle model, engine type, or specification is different.

[J] : Indicates a shielded cable.

[K] : Indicates and located on ground point.

[L] : The same code occuring on the next page indicates that the wire harness is continuous.

SYSTEM INDEXM

OV

ER

AL

L E

LE

CT

RIC

AL

WIR

ING

DIA

GR

AM

196

SC

ION

xB (E

M0091U

)

SYSTEMS LOCATION SYSTEMS LOCATIONABS 13–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Air Conditioning 18–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Audio System 15–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Back–Up Light 8–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Charging 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cigarette Lighter 7–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Combination Meter 16–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Door Lock Control 11–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electronically Controlled Transmission and A/T Indicator 3–2. . . . . . . . .

Engine Control 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fog Light 12–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Front Wiper and Washer 8–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Headlight 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Horn 5–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Ignition 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Illumination 6–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Interior Light 7–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Key Reminder 9–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Light Reminder 9–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Multiplex Communication System (CAN) 13–11. . . . . . . . . . . . . . . . . . . . .

Power Source 1~19–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Window 10–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PTC Heater 18–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Radiator Fan and Condenser Fan 17–2. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rear Window Defogger 17–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rear Wiper and Washer 15–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Remote Control Mirror 12–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Seat Belt Warning (Before Dec. 2005 Production) 9–2. . . . . . . . . . . . . . .

Seat Belt Warning (From Dec. 2005 Production) 19–4. . . . . . . . . . . . . . . .

Shift Lock 9–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SRS (Before Dec. 2005 Production) 14–2. . . . . . . . . . . . . . . . . . . . . . . . . .

SRS (From Dec. 2005 Production) 19–2. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Starting 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Stop Light 9–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Taillight 6–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TRAC 13–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Turn Signal and Hazard Warning Light 5–2. . . . . . . . . . . . . . . . . . . . . . . . .

Two Way Flow Heater 18–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

VSC 13–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Wireless Door Lock Control 11–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2006 xb electrical wiring...

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