Shows place of the Electronic Control Unit, Relays, Relay Block, and so on This area is carefully related to the device circuit.

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G

ELECTRICAL WIRING ROUTING

Describes place of Parts Connectors, Splice points, Ground points, and so on This section is carefully concerned the device circuit.

H

INDEX

Index of the system circuits.

SYSTEM CIRCUITS

Electrical circuits of each mechanism are shown from the power supply through ground points. Wiring connections and also their positions are displayed and classified by code according to the link method. (Refer to the area, "How to use this manual"). The "System Outline" and "Service Hints" beneficial for troubleshooting are likewise consisted of in this section.

I

GROUND POINT

Shows ground positions of all parts defined in this manual.

J

POWER SOURCE (Current Flow Chart)

Describes power circulation from the power supply to miscellaneous electric tons.

K

CONNECTOR LIST

Describes the create of the connectors for the components showed up in this book. This section is very closely related to the mechanism circuit.

L

PART NUMBER OF CONNECTORS

Indicates the part number of the connectors used in this hands-on.

M

OVERALL ELECTRICAL WIRING DIAGRAM

Provides circuit diagrams showing the circuit connections.

This hands-on offers indevelopment on the electrical circuits mounted on vehicles by separating them right into a circuit for each device.

The actual wiring of each system circuit is displayed from the point wbelow the power source is got from the battery as much as each ground allude. (All circuit diagrams are displayed with the switches in the OFF position.)

When troubleshooting any trouble, initially understand also the procedure of the circuit wright here the difficulty was detected (watch System Circuit section), the power source supplying power to that circuit (view Power Source section), and the ground points (watch Ground Point section). See the System Outline to understand the circuit procedure.

When the circuit procedure is interpreted, start troubleshooting of the difficulty circuit to isolate the cause. Use Relay Location and Electrical Wiring Routing sections to uncover each component, junction block and wiring harness connectors, wiring harness and also wiring harness connectors and also ground points of each device circuit. Internal wiring for each junction block is also provided for much better expertise of link within a junction block.

Wiring regarded each device is indicated in each system circuit by arrows (from_, to_). When in its entirety connections are required, view the Overall Electrical Wiring Diagram at the finish of this hands-on.

The system shown below is an EXAMPLE ONLY. It is various to the actual circuit displayed in the SYSTEM CIRCUITS SECTION.

*

Indicates a Relay Block. No shading is offered and also only the Relay Block No. is displayed to differentiate it from the J/B

Example: Indicates Relay Block No.1 ( ) is offered to show different wiring and connector, etc. once the vehicle design, engine form, or specification is different.

Indicates associated system. Indicates the code for the (male and female) connectors which are provided to sign up with 2 wire harnesses. The connector code is composed of 2 alphabetical and one numerical characters.

*

Female

Male ( ^ )

The first character of the connector code indicates the alphabetical code allocated to the wire harness which has the female connector, and the second mirrors that of the wire harness which has the male connector.

The third character shows a serial number offered to differentiate between the wire harness combinations in situations as soon as more than one of the exact same combination of wire harnesses exist (e.g. CH1 and also CH2).

Symbol ( ^ ) suggests the male terminal connector. Numbers outside connector codes show the pin numbers of both male and female connectors.

: Represents a component (all parts are displayed in sky blue).

The code is the same as the code provided in components position.

: Junction Block (The number in the circle is the J/B

No. and the connector code is presented next to it). Junction Blocks are shaded to clearly separate them from other components.

Example: 15(30) 3C suggests that it is inside Junction Block No.3

Indicates the wiring color.

Wire colors are indicated by an alphabetical code.

B = Babsence W = White BR = Brown

V = Violet G = Green

Y = Yellow

L R P O

= Blue

= Red

= Pink

= Orange

SB = Sky Blue LG = Light Environment-friendly GR = Gray

The first letter shows the basic wire color and the second letter suggests the color of the stripe.

Example: L - Y

L - Y (Blue) (Yellow)

: Indicates a shielded cable.

Indicates the pin number of the connector. The numbering mechanism is various for female and male connectors.

Example:

Numbered in various other from top left to reduced right

Numbered in various other from upper best to reduced left

n=n

^ I

Female

Male

Indicates the ground point. The code consists of the two characters: A letter and also number. The initially character of the code suggests the alphabetical code alsituated to the wire harness. The second character shows a serial number supplied to identify between the ground points in situations when more than one ground point exist on the same wire harness.

: Page No.

: Indicates the ignition key position(s) as soon as the power is provided to the fuse(s).

: Indicates a wiring Splice Point.

Example:

*

System Outline

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

When the ignition SW is turned on, existing flows from the GAUGE fuse to TERMINAL 8 of the light faiattract sensor, and also also flows with the rear lights warning light to TERMINAL 4 of the light failure sensor.

Speak Light Dislink Warning

When the ignition SW is turned on and the brake pedal is pressed (Stop lamp SW on), if the sheight light circuit is open, the existing flowing from TERMINAL 7 of the light faiattract sensor to TERMINALS 1, 2 changes, so the light faiattract sensor detects the disconnection and the warning circuit of the light faitempt sensor is caused.

As a result, the current flows from TERMINAL 4 of the light failure sensor to TERMINAL 11 to GROUND and transforms the rear lights warning light on. By pushing the brake pedal, the present flowing to TERMINAL 8 of the light faitempt sensor keeps the warning circuit on and also holds the warning light on till the ignition SW is turned off.

O : Parts Location

Code

See Page

Code

See Page

Code

See Page

H4

36

H7

36

H17

38

H6

36

H9

38

J7

38

O : Relay Blocks

Code

See Page

Relay Blocks (Relay Block Location)

1

18

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

O : Junction Block and Wire Harness Connector

Code

See Page

Junction Block and also Wire Harness (Connector Location)

3C

22

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

IB

20

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

%u25A1 : Connector Joining Wire Harness and Wire Harness

Code

See Page

Joining Wire Harness and Wire Harness (Connector Location)

CH1

42

Engine Room Key Wire and also Instrument Panel Wire (Left Kick Panel)

HJ1

50

Instrument Panel Wire and Floor Wire (Right Kick Panel)

V

: Ground Points

Code

See Page

Ground Points Location

H1

50

Under the Left Center Pillar

H2

50

Back Panel Center

: Explains the system outline.

: Indicates reference pperiods showing the parts places in the mechanism circuit on the automobile.

Example : Code "H4" (Light Failure Sensor) is on web page 36 of the hand-operated.

* The initially character of the code suggests the alphabetical code allocated to the wire harness, and also the second character indicates the serial number of the parts connected to the wire harness.

Example : H 4

T"1--Serial number for the connected parts

-Code for the wire harness

: Indicates the recommendation web page reflecting the place on the auto of Relay Block Connectors in the mechanism circuit.

Example : Connector "1" is explained on page 18 of this hand-operated and also is set up on the left side of the instrument panel.

: Indicates the reference web page showing the place 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 defined on web page 22 of this hands-on, and also is mounted on the instrument panel left side.

: Indicates the reference web page describing the wiring harness and also wiring harness connector (the female wiring harness is presented initially, followed by the male wiring harness).

Example : Connector "CH1" connects the Engine Room Key Wire (female) and Instrument Panel Wire (male). It is explained on page 42 of this hand-operated, and is mounted on the left side kick panel.

: Indicates the recommendation web page mirroring the place of the ground points on the car.

Example : Ground point "H2" is described on web page 50 of this hand-operated and also is mounted on the earlier panel facility.

The ground points circuit diagram shows the relations from all major components to the corresponding ground points. When troubleshooting a faulty ground allude, checking the mechanism circuits which use a prevalent ground might aid you identify the trouble ground conveniently. The connection between ground points ( , and also oy presented below) deserve to likewise be checked this way.

I GROUND POINT

H23

DLC3

(SG)

D43 Junction Connector 6 (Shielded)

A20 Headlamp Leveling Motor (LH)

(LH E)

L5

Power Window

(E)

Master SW

A22

Cooling Fan

(E)

Motor No.3

6 (Shielded)

*

D63 Throttle (L) Position SW

D60 Injection (EI> Pump Assembly

A10 Brake Fluid Level Warning SW

K5 Power Window (E> Master SW

D63 Throttle (L) Position SW

D60 Injection (EI> Pump Assembly

A8

Headlamp Leveling Motor (RH) (RH E)

W - B

W - B

A5

Prescertain SW

(-S)

A23

Turn Signal Lamp

W - B

(Front LH)

A11

Windshield

(E)

Wiper Motor

I9

Headlamp

(E)

Leveling SW

A6

W - B

g

Clearance Lamp

(Front RH)

A21

Clearance Lamp

W - B

(Front LH>

(E1)

D2

(E01)

Engine ECU

(E02)

W - B

C2

Fog Lamp (E) (Front LH)

W - B

C4

Fog Lamp (E) (Front RH)

-

A10

Brake Fluid Level Warning SW

12 7

W - B ...W - B _j.W - B

A1

W - B

Turn Signal Lamp

(E) (Front RH)

K5

Power Window (E> Master SW

A24

Option Connector (Vacuum)

(GND1)

(GND)

B19

Skid Control ECU

with Actuator

(GND)

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

The "Current Flow Chart" area, explains which components each power resource (foffers, fusible links, and circuit breakers) transmits present to. In the Power Source circuit diagram, the problems as soon as battery power is supplied to each device are explained. Because all System Circuit diagrams begin from the power source, the power source mechanism should be completely understood.

J POWER SOURCE (Current Flow Chart)

The chart listed below mirrors the course by which existing flows from the battery to each electric resource (Fusible Link, Circuit Breaker, Fues, and so on.) and various other parts

Engine Room R/B

Power Source

1.25B FL MAIN

*

15A HAZ-RADIO

H8 Ignition SW

W - R Battery

S 2 Starter

7.5A DOME

20A DEFOG

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

*

*

CONNECTOR LIST

BA1 I Black

*

*

: Indicates connector to be associated to a part. (The numeral shows the pin No.)

: Junction Connector

Indicates a connector which is linked to a short terminal.

Junction Connector

Junction connector in this manual incorporate a short terminal which is connected to a variety of wire harnesses. Almethods perdevelop inspection via the short terminal set up.

Brief Terminal

: Parts Code

The first letter of the code is taken from the first letter of component, and also the numbers shows its order in parts which begin via the same letter.

: Connector Color

Connectors not suggested are milky white in shade.

: Indicates the connector shapes which are provided to join wire harnesses.

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

: Indicates connector colors. (Connectors through not shown colors are white) 10

*

Quick Terminal

PART NUMBER OF CONNECTORS

Code

Part Name

Part Number

Code

Part Name

Part Number

A1

Turn Signal Lamp (Front RH)

90980-11019

B22

Door Courtesy SW (Front LH)

90980-12470

A2

Inlet Air Temp. Sensor

90980-11163

B23

Front Seat Outer Belt (LH)

90980-12253

A3

Air Flow Meter

90980-12292

B24

Blower SW (Rear Heater)

90980-10463

A4

A/C Pressure Sensor

90980-10845

B25

Front Seat Outer Belt (RH)

90980-12253

A5

Pressure SW

90980-10943

B26

Door Courtesy SW (Front RH)

90980-12470

A6

Clearance Lamp (Front RH)

90980-11156

B27

Cooling Fan ECU No.1

90980-10841

Headla H)

9098 314

B28

Cooling Fan ECU No.2

A8

Headlamp Leveling Motor (RH)

90980-11016

B29

Water Temp. Sensor (Radiator)

90980-10735

A9

Brake Vacuum Warning SW

90980-11252

B30

Fuel Filter Warning SW

90980-11003

A10

Brake Fluid Level Warning SW

90980-11207

B32

Door Control Relay (LH)

90980-10789

A11

Windshield Washer Motor

90980-11599

B33

Step Lamp (LH)

90980-10121

A12

Airbag Sensor (Front RH)

90980-11856

B34

Junction Connector

90980-11398

A13

-------—-—____^

90980-12490

B35

Junction Connector

: Part Code

: Part Name

: Part Number

Toyota Part Number are shown.

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

To Ignition SW

*

VOLTAGE CHECK

(a) Establish problems in which voltage is present at the check suggest.

Example:

- Ignition SW on

- Ignition SW and also SW 1 on

- Ignition SW, SW 1 and Relay on (SW 2 off)

(b) Using a voltmeter, affix the negative cause a great ground point or negative battery terminal, and also the positive lead to the connector or component terminal.

This examine deserve to be done through a test light rather of a voltmeter.

*

CONTINUITY AND RESISTANCE CHECK

(a) Disaffix the battery terminal or wire so there is no voltage between the examine points.

(b) Contact the 2 leads of an ohmmeter to each of the check points.

Digital Type Analog Type

*
*

If the circuit has diodes, reverse the two leads and also inspect aobtain.

When contacting the negative bring about the diode positive side and the positive cause the negative side, there must be continuity.

When contacting the two leads in reverse, there must be no continuity.

(c) Use a volt/ohmmeter with high impedance (10 kQ/V minimum) for troubleshooting of the electric circuit.

*

FINDING A SHORT CIRCUIT

(a) Rerelocate the blvery own fusage and disaffix all tons of the fusage.

(b) Connect a test light in place of the fusage.

(c) Establish conditions in which the test light comes on.

Example:

- Ignition SW on

- Ignition SW and also SW 1 on

- Ignition SW, SW 1 and Relay on (Connect the

Relay) and SW 2 off (or Disconnect SW 2)

(d) Disattach and reattach the connectors while watching the test light.

The brief lies in between the connector wright here the test light continues to be lit and the connector wbelow the light goes out.

(e) Find the exact area of the short by lightly shaking the difficulty wire alengthy the body.

CAUTION:

(a) Do not open up the cover or the instance of the ECU unmuch less absolutely crucial. (If the IC terminals are touched, the IC may be damaged by static electrical energy.)

(b) When replacing the inner system (ECU part) of the digital meter, be mindful that no part of your body or clothing comes in contact through the terminals of leads from the IC, and so on. of the replacement component (spare part).

DISCONNECTION OF MALE AND FEMALE CONNECTORS

To pull acomponent the connectors, pull on the connector itself, not the wire harness.

HINT: Check to see what type of connector you are disconnecting before pulling apart.

*
*

HOW TO REPLACE TERMINAL

(via terminal retainer or second locking device)

1. PREPARE THE SPECIAL TOOL

HINT: To rerelocate the terminal from the connector, please construct and also use the distinct tool or prefer object shown on the left.

2. DISCONNECT CONNECTOR

Terminal Retainer

*

Terminal

Stopper Retainer

*

*

Terminal Retainer

3. DISENGAGE THE SECONDARY LOCKING DEVICE OR

TERMINAL RETAINER.

(a) Locking gadget must be disinvolved before the terminal locking clip can be released and the terminal removed from the connector.

(b) Use a one-of-a-kind tool or the terminal pick to unlock the additional locking gadget or terminal retainer.

NOTICE:

Do not remove the terminal retainer from connector body.

For Non-Waterproof Type Connector

HINT : The needle insertion place varies according to the connector"s shape (number of terminals etc.), so check the position prior to inserting it.

"Case 1"

Raise the terminal retainer as much as the short-term lock position.

*

"Case 2"

Open the additional locking device.

*
*

For Waterproof Type Connector

HINT: Terminal retainer shade is various according to connector body.

Example:

Terminal Retainer : Connector Body Babsence or White : Gray Black or White : Dark Gray Gray or White : Black

*

"Case 1"

Type wbelow terminal retainer is pulled up to the short-term lock position (Pull Type).

Insert the special tool right into the terminal retainer accessibility hole (^Mark) and also pull the terminal retainer as much as the temporary lock place.

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

*

"Case 2"

Type which cannot be pulled as far as Power Lock insert the tool straight right into the access hole of terminal retainer as displayed.

*

Push the terminal retainer down to the temporary lock position.

*

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

*

INSTALL TERMINAL TO CONNECTOR

(a) Insert the terminal. HINT:

1. Make certain the terminal is positioned properly.

2. Insert the terminal till the locking lug locks firmly.

3. Insert the terminal with terminal retainer in the short-term lock position.

(b) Push the second locking device or terminal retainer in to the full lock position.

ABBREVIATIONS

The adhering to abbreviations are provided in this manual.

A/C

= Air Conditioning

A/T

= Automatic Transaxle

ABS

= Anti-Lock Brake System

ACIS

= Acoustic Control Induction System

ACM

= Active Control Engine Mount

CAN

= Controller Area Network

EC

= Electrochromic

ECU

= Electronic Control Unit

ESA

= Electronic Spark Advance

ETCS-i :

= Electronic Throttle Control System

FL

= Fusible Link

IC

= Integrated Circuit

J/B

= Junction Block

LCD

= Liquid Crystal Display

LH

= Left-Hand

M/T

= Manual Transaxle

R/B

= Relay Block

RH

= Right-Hand

SFI

= Sequential Multiport Fuel Injection

SRS

= Supplemental Restraint System

SW

= Switch

TEMP.

= Temperature

TRAC

= Traction Control

VSC

= Vehicle Stcapacity Control

VSV

= Vacuum Switching Valve

VVT

= Variable Valve Timing

VVT-i

= Variable Valve Timing-intelligent

w/

= With

w/o

= Without

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

BATTERY

Stores chemical energy and also converts it right into electric power. Provides DC present for the auto"s various electrical circuits.

GROUND

The point at which wiring attaches to the Body, thereby giving a rerevolve course for an electric circuit; without a ground, current cannot flow.

CAPACITOR (Condenser)

A tiny holding unit for short-term storage of electric voltage.

*

CIGARETTE LIGHTER

An electric resistance heating aspect.

HEADLIGHTS 1. SINGLE Current circulation causes a headlight FILAMENT filament to warm up and also emit light. A headlight might have actually either a single (1) filament or a twin (2) filament

2. DOUBLE FILAMENT

CIRCUIT BREAKER

Basically a reusable fusage, a circuit breaker will heat and open up if as well a lot existing flows through it. Some systems automatically reset when cool, others have to be manually reset.

HORN

An electrical gadget which sounds a loud audible signal.

DIODE

A semiconductor which enables present flow in only one direction.

*

IGNITION COIL

Converts low-voltage DC present into high-voltage ignition present for firing the spark plugs.

DIODE, ZENER

A diode which enables current circulation in one direction but blocks reverse circulation just up to a particular voltage. Above that potential, it passes the excess voltage. This acts as an easy voltage regulator.

LIGHT

Current circulation with a filament reasons the filament to heat up and emit light.

PHOTODIODE

The photodiode is a semiconductor which controls the existing circulation according to the amount of light.

LED (LIGHT EMITTING DIODE)

Upon present circulation, these diodes emit light without creating the warmth of a similar light.

*

DISTRIBUTOR, IIA

Channels high-voltage existing from the ignition coil to the individual spark plugs.

METER, ANALOG

Current flow activates a magnetic coil which causes a needle to move, thereby giving a loved one screen versus a background calibration.

FUSE

A thin steel strip which burns via as soon as also much present flows through it, thereby stopping existing circulation and protecting a circuit from damages. FUSIBLE LINK (for Medium Current Fuse) a heavy-gauge wire placed in high

amperage circuits which burns with on overlots, thereby protecting the circuit. The numbers indicate the crosssection surchallenge location of the wires.

METER, DIGITAL

Current circulation activates one or many LED"s, LCD"s, or fluorescent screens, which carry out a family member or digital screen.

(for High Current Fuse or Fusible Link)

MOTOR

A power unit which converts electrical energy right into mechanical power, especially rotating motion.

RELAY

Basically, an electrically operated Current flow with a small coil creates a magnetic field which either opens or closes an attached switch.

1. NORMALLY switch which might be commonly CLOSED closed (1) or open (2).

2. NORMALLY OPEN

SPEAKER

An electromechanical device which creates sound waves from existing circulation.

SWITCH, MANUAL

1. NORMALLY OPEN

RELAY, DOUBLE THROW

A relay which passes present with one set of contacts or the other.

RESISTOR

An electric component through a solved resistance, inserted in a circuit to mitigate voltage to a particular worth.

RESISTOR, TAPPED

A resistor which offers 2 or even more various non adjusecure resistance worths.

Opens and closes circuits, thereby preventing (1) or allowing (2) present flow.

2. NORMALLY CLOSED

*

RESISTOR, VARIABLE or RHEOSTAT

A manageable resistor with a variable price of resistance. Also called a potentiometer or rheostat.

*

SWITCH, DOUBLE THROW

A switch which repeatedly passes existing with one collection of contacts or the other.

SWITCH, IGNITION

A key operated switch with numerous positions which enables various circuits, particularly the major ignition circuit, to come to be operational.

(Reed Switch Type)

SENSOR (Thermistor)

A resistor which varies its resistance through temperature.

SENSOR, SPEED

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

*
*

TRANSISTOR

A solidstate gadget commonly offered as an electronic relay; stops or passes present depending upon the voltage used at "base".

SWITCH, WIPER PARK

Automatically returns wipers to the speak place once the wiper switch is turned off.

TRANSISTOR

A solidstate gadget typically used as an electronic relay; stops or passes existing depending upon the voltage applied at "base".

SHORT PIN

Used to administer an unbroken connection within a junction block.

SOLENOID

An electromagnetic coil which forms a magnetic field once present flows, to move a plunger, and so on.

*

(2) SPLICED

WIRES

Wires are constantly attracted as (1) NOT right lines on wiring

CONNECTED diagrams.

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Crossed wires (1) without a babsence dot at the junction are not joined; crossed wires (2) through a babsence dot or octagonal ( O ) mark at the junction are spliced (joined) relationships.