Shows place of the Electronic control Unit, Relays, Relay Block, etc. This ar is closely related to the device circuit.

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G

ELECTRICAL WIRING ROUTING

Describes position of parts Connectors, Splice points, soil points, etc. This section is carefully related come the device circuit.

H

INDEX

Index that the device circuits.

SYSTEM CIRCUITS

Electrical circuits that each device are shown from the power supply through ground points. Wiring connections and also their positions space shown and classified by password according come the link method. (Refer to the section, "How to usage this manual"). The "System Outline" and also "Service Hints" beneficial for troubleshooting are also contained in this section.

I

GROUND POINT

Shows ground location of all parts explained in this manual.

J

POWER resource (Current flow Chart)

Describes power distribution from the power supply to various electrical loads.

K

CONNECTOR LIST

Describes the kind of the connectors for the parts showed up in this book. This ar is closely related to the device circuit.

L

PART number of CONNECTORS

Indicates the part variety of the connectors supplied in this manual.

M

OVERALL electric WIRING DIAGRAM

Provides circuit diagrams showing the circuit connections.

This manual gives information on the electrical circuits set up on vehicles by splitting them into a circuit for each system.

The actual wiring of each system circuit is presented from the point where the power resource is got from the battery as much as each ground point. (All circuit diagrams are presented with the switches in the turn off position.)

When troubleshooting any problem, first understand the operation of the circuit whereby the problem was detected (see system Circuit section), the power resource supplying power to that circuit (see Power resource section), and also the floor points (see Ground allude section). See the device Outline to recognize the circuit operation.

When the circuit procedure is understood, start troubleshooting the the difficulty circuit to isolation the cause. Usage Relay Location and also Electrical Wiring Routing sections to find each part, junction block and wiring harness connectors, wiring harness and also wiring harness connectors and also ground point out of each mechanism circuit. Internal wiring for each junction block is also listed for far better understanding of link within a junction block.

Wiring regarded each system is indicated in each mechanism circuit by arrows (from_, to_). When overall connections space required, see the overall Electrical Wiring Diagram in ~ the end of this manual.

The system presented here is an example ONLY. It is different to the yes, really circuit shown in the system CIRCUITS SECTION.

*

Indicates a Relay Block. No shading is used and also only the Relay Block No. Is displayed to distinguish it from the J/B

Example: suggests Relay Block No.1 ( ) is supplied to indicate various wiring and also connector, etc. Once the auto model, engine type, or specification is different.

Indicates associated system. Indicates the code for the (male and also female) connectors i m sorry are supplied to join two wire harnesses. The connector code consists of 2 alphabetical and also one numerical characters.

*

Female

Male ( ^ )

The an initial character that the connector code shows the alphabetical code allocated come the cable harness which has actually the mrs connector, and also the 2nd shows the of the wire harness which has the masculine connector.

The 3rd character shows a serial number used to distinguish between the cable harness combinations in situations when more than among the same mix of wire harnesses exist (e.g. CH1 and CH2).

Symbol ( ^ ) shows the masculine terminal connector. Numbers external connector codes show the pen numbers the both male and female connectors.

: represents a component (all components are shown in skies blue).

The code is the very same as the code used in components position.

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

No. And also the connector code is displayed beside it). Junction Blocks room shaded to plainly separate lock from other parts.

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

indicates the wiring color.

Wire colors are shown by an alphabet code.

B = black W = White BR = Brown

V = Violet G = Green

Y = Yellow

L R ns O

= Blue

= Red

= Pink

= Orange

SB = sky Blue LG = Light environment-friendly GR = Gray

The very first letter indicates the simple wire color and also the 2nd letter suggests the color of the stripe.

Example: l - Y

L - Y (Blue) (Yellow)

: shows a shielded cable.

Indicates the pin number of the connector. The numbering system is different for female and male connectors.

Example:

Numbered in various other from upper left to reduced right

Numbered in various other from upper best to lower left

n=n

^ I

Female

Male

Indicates the floor point. The code is composed of the two characters: A letter and number. The very first character that the code suggests the alphabetical code allocated to the cable harness. The second character suggests a serial number offered to distinguish between the floor points in cases when more than one ground allude exist on the exact same wire harness.

: page No.

: shows the ignition key position(s) when the strength is supplied to the fuse(s).

: indicates a wiring Splice Point.

Example:

*

System Outline

Current is applied at every times v the stop fuse to TERMINAL 2 the the avoid lamp SW.

When the ignition SW is turned on, current flows indigenous the GAUGE fuse come TERMINAL 8 of the light failure sensor, and additionally flows v the rear lights warning light to TERMINAL 4 of the light fail sensor.

Stop irradiate Disconnection Warning

When the ignition SW is rotate on and also the brake pedal is pressed (Stop lamp SW on), if the avoid light circuit is open, the present flowing from TERMINAL 7 the the light failure sensor come TERMINALS 1, 2 changes, for this reason the light failure sensor detects the disconnection and also the warning circuit that the light failure sensor is activated.

As a result, the existing flows indigenous TERMINAL 4 that the light failure sensor to TERMINAL 11 come GROUND and turns the behind lights warning light on. By pressing the brake pedal, the present flowing to TERMINAL 8 the the light fail sensor keeps the warning circuit on and also holds the warning light on until 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 block (Relay Block Location)

1

18

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

O : Junction Block and also Wire harness Connector

Code

See Page

Junction Block and also Wire harness (Connector Location)

3C

22

Instrument panel Wire and J/B No.3 (Instrument dashboard Brace LH)

IB

20

Instrument dashboard Wire and also Instrument dashboard J/B (Lower complete Panel)

%u25A1 : Connector Joining wire Harness and Wire Harness

Code

See Page

Joining wire Harness and Wire exploit (Connector Location)

CH1

42

Engine Room main Wire and Instrument Panel wire (Left absent Panel)

HJ1

50

Instrument panel Wire and also Floor cable (Right kick Panel)

V

: ground Points

Code

See Page

Ground clues Location

H1

50

Under the Left facility Pillar

H2

50

Back dashboard Center

: defines the mechanism outline.

: suggests reference pages mirroring the parts locations in the mechanism circuit ~ above the vehicle.

Example : code "H4" (Light failure Sensor) is on page 36 of the manual.

* The very first character that the code indicates the alphabetical code allocated to the wire harness, and the 2nd character shows the serial variety of the parts associated to the wire harness.

Example : H 4

T"1--Serial number because that the connected parts

-Code because that the cable harness

: suggests the reference page showing the place on the car of Relay Block Connectors in the device circuit.

Example : Connector "1" is defined on web page 18 the this manual and is installed on the left side of the tool panel.

: shows the reference page showing the place on the automobile of J/B and also Wire exploit in the device circuit.

Example : Connector "3C" connects the Instrument dashboard Wire and J/B No.3. It is explained on page 22 that this manual, and is mounted on the instrument panel left side.

: indicates the reference web page describing the wiring harness and also wiring harness connector (the woman wiring exploit is shown first, followed by the masculine wiring harness).

Example : Connector "CH1" connects the Engine Room key Wire (female) and also Instrument Panel cable (male). The is described on page 42 that this manual, and also is installed on the left side kick panel.

: suggests the reference page showing the position of the soil points ~ above the vehicle.

Example : Ground point "H2" is explained on web page 50 that this manual and is mounted on the ago panel center.

The soil points circuit diagram mirrors the connections from all significant parts come the particular ground points. Once troubleshooting a faulty floor point, check the system circuits which usage a usual ground may help you recognize the difficulty ground quickly. The relationship between ground clues ( , and \oy presented below) can likewise be checked this way.

I ground POINT

H23

DLC3

(SG)

D43 Junction Connector 6 (Shielded)

A20 Headlamp Leveling engine (LH)

(LH E)

L5

Power Window

(E)

Master SW

A22

Cooling Fan

(E)

Motor No.3

6 (Shielded)

*

D63 throttle (L) place SW

D60 Injection (EI> Pump Assembly

A10 Brake liquid Level Warning SW

K5 Power window (E> grasp SW

D63 throttle (L) position SW

D60 Injection (EI> Pump Assembly

A8

Headlamp Leveling engine (RH) (RH E)

W - B

W - B

A5

Pressure 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 desk 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 home window (E> master SW

A24

Option Connector (Vacuum)

(GND1)

(GND)

B19

Skid control ECU

with Actuator

(GND)

The system shown here is an example ONLY. The is various to the really circuit displayed in the system CIRCUITS SECTION.

The "Current flow Chart" section, defines which components each power source (fuses, fusible links, and circuit breakers) transmits present to. In the Power source circuit diagram, the conditions when battery power is provided to each mechanism are explained. Because all system Circuit diagrams begin from the power source, the power source system must be totally understood.

J POWER source (Current circulation Chart)

The chart below shows the route whereby current operation from the battery to each electrical source (Fusible Link, Circuit Breaker, Fues, etc.) and also 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 system displayed here is an example ONLY that is various to the yes, really circuit presented in the mechanism CIRCUITS SECTION.

*

*

CONNECTOR LIST

BA1 ns Black

*

*

: suggests connector to be linked to a part. (The numeral suggests the pin No.)

: Junction Connector

Indicates a connector i m sorry is associated to a brief terminal.

Junction Connector

Junction connector in this manual incorporate a quick terminal i beg your pardon is linked to a number of wire harnesses. Always perform inspection v the brief terminal installed.

Short Terminal

: parts Code

The first letter the the password is taken from the first letter of part, and the numbers indicates its order in parts which start with the same letter.

: Connector Color

Connectors not suggested are milky white in color.

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

On Left : female connector shapes On right : masculine connector forms Numbers suggest pin numbers.

: shows connector colors. (Connectors v not shown colors are white) 10

*

Short Terminal

PART variety of CONNECTORS

Code

Part Name

Part Number

Code

Part Name

Part Number

A1

Turn Signal desk lamp (Front RH)

90980-11019

B22

Door Courtesy SW (Front LH)

90980-12470

A2

Inlet waiting 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 press 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 desk lamp (Front RH)

90980-11156

B27

Cooling pan ECU No.1

90980-10841

Headla H)

9098 314

B28

Cooling pan 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

: component Code

: part Name

: component Number

Toyota part Number space indicated.

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

To Ignition SW

*

VOLTAGE CHECK

(a) Establish conditions in i beg your pardon voltage is present at the examine point.

Example:

- Ignition SW on

- Ignition SW and SW 1 on

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

(b) making use of a voltmeter, affix the an adverse lead to a an excellent ground allude or negative battery terminal, and also the positive bring about the connector or ingredient terminal.

This check can it is in done through a test light instead of a voltmeter.

*

CONTINUITY and RESISTANCE CHECK

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

(b) call the 2 leads of one ohmmeter to every of the examine points.

Digital form Analog Type

*
*

If the circuit has actually diodes, reverse the two leads and check again.

When contacting the negative lead to the diode optimistic side and also the positive result in the an unfavorable side, there have to 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 the the electrical circuit.

*

FINDING A quick CIRCUIT

(a) remove the puffy fuse and disconnect all tons of the fuse.

(b) attach a check light in location of the fuse.

(c) Establish conditions in i m sorry the check light comes on.

Example:

- Ignition SW on

- Ignition SW and also SW 1 on

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

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

(d) Disconnect and also reconnect the connectors while watching the test light.

The short lies in between the connector where the check light remains lit and the connector wherein the irradiate goes out.

(e) uncover the exact location of the short by easy shaking the trouble wire along the body.

CAUTION:

(a) do not open up the sheathe or the situation of the ECU unless absolutely necessary. (If the IC terminals are touched, the IC may be damaged by revolution electricity.)

(b) when replacing the inner mechanism (ECU part) that the digital meter, be cautious that no component of her body or clothing comes in contact with the terminals of leads from the IC, etc. The the replacement component (spare part).

DISCONNECTION of MALE and FEMALE CONNECTORS

To pull apart the connectors, traction on the connector itself, not the cable harness.

HINT: inspect to view what kind of connector you room disconnecting before pulling apart.

*
*

HOW TO replace TERMINAL

(with terminal retainer or secondary locking device)

1. PREPARE THE one-of-a-kind TOOL

HINT: To remove the terminal from the connector, please construct and use the special tool or choose object shown on the left.

2. DISCONNECT CONNECTOR

Terminal Retainer

*

Terminal

Stopper Retainer

*

*

Terminal Retainer

3. DISENGAGE THE second LOCKING an equipment OR

TERMINAL RETAINER.

(a) Locking maker must it is in disengaged prior to the terminal locking clip have the right to be released and the terminal gotten rid of from the connector.

(b) use a special tool or the terminal choose to unlock the an additional locking machine or terminal retainer.

NOTICE:

Do not remove the terminal retainer indigenous connector body.

for Non-Waterproof form Connector

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

"Case 1"

Raise the terminal retainer as much as the temporary lock position.

*

"Case 2"

Open the secondary locking device.

*
*

because that Waterproof kind Connector

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

Example:

Terminal Retainer : Connector Body black or White : Gray black color or White : Dark Gray Gray or White : Black

*

"Case 1"

Type where terminal retainer is pulled as much as the short-lived lock position (Pull Type).

Insert the unique tool right into the terminal retainer access hole (^Mark) and also pull the terminal retainer approximately the momentary lock position.

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

*

"Case 2"

Type which cannot be traction as much as power Lock insert the device straight right into the accessibility hole the terminal retainer as shown.

*

Push the terminal retainer down to the short-lived lock position.

*

(c) relax the locking lug native terminal and also pull the terminal the end from rear.

*

INSTALL TERMINAL come CONNECTOR

(a) Insert the terminal. HINT:

1. Make certain the terminal is positioned correctly.

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

3. Insert the terminal v terminal retainer in the momentary lock position.

(b) press the second locking machine or terminal retainer in come the full lock position.

ABBREVIATIONS

The following abbreviations are provided in this manual.

A/C

= air Conditioning

A/T

= automatically Transaxle

ABS

= Anti-Lock Brake System

ACIS

= Acoustic manage Induction System

ACM

= active Control Engine Mount

CAN

= Controller Area Network

EC

= Electrochromic

ECU

= Electronic control Unit

ESA

= electronic Spark Advance

ETCS-i :

= digital Throttle regulate System

FL

= Fusible Link

IC

= integrated Circuit

J/B

= Junction Block

LCD

= Liquid crystal Display

LH

= Left-Hand

M/T

= hand-operated 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

= car Stability Control

VSV

= Vacuum convert Valve

VVT

= change Valve Timing

VVT-i

= variable Valve Timing-intelligent

w/

= With

w/o

= Without

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

BATTERY

Stores chemical energy and converts that into electrical energy. Provides DC existing for the auto"s various electrical circuits.

GROUND

The point at i m sorry wiring attaches come the Body, thereby giving a return path for an electric circuit; there is no a ground, present cannot flow.

CAPACITOR (Condenser)

A small holding unit for short-lived storage of electrical voltage.

*

CIGARETTE LIGHTER

An electric resistance heating element.

HEADLIGHTS 1. Solitary Current flow reasons a headlight FILAMENT filament to heat up and also emit light. A headlight may have either a solitary (1) filament or a twin (2) filament

2. Dual FILAMENT

CIRCUIT BREAKER

Basically a recycle fuse, a circuit breaker will heat and also open if also much current flows v it. Some units automatically reset once cool, others have to be manually reset.

HORN

An electric maker which sounds a according to audible signal.

DIODE

A semiconductor which enables current circulation in just one direction.

*

IGNITION COIL

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

DIODE, ZENER

A diode which permits current circulation in one direction yet blocks reverse circulation only as much as a specific voltage. Above that potential, it passes the overfill voltage. This acts as a straightforward voltage regulator.

LIGHT

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

PHOTODIODE

The photodiode is a semiconductor i beg your pardon controls the current flow follow to the quantity of light.

LED (LIGHT create DIODE)

Upon existing flow, this diodes emit light without developing the heat of a similar light.

*

DISTRIBUTOR, IIA

Channels high-voltage present from the ignition coil come the separation, personal, instance spark plugs.

METER, ANALOG

Current flow activates a magnetic coil which reasons a needle come move, thereby providing a loved one display versus a elevator calibration.

FUSE

A thin metal strip i m sorry burns through once too much present flows v it, thereby stopping current flow and protecting a circuit native damage. FUSIBLE link (for Medium existing Fuse) a heavy-gauge wire inserted in high

amperage circuits which burns through on overloads, in order to protecting the circuit. The numbers indicate the crosssection surface area of the wires.

METER, DIGITAL

Current circulation activates one or plenty of LED"s, LCD"s, or fluorescent displays, which provide a loved one or digital display.

(for High current Fuse or Fusible Link)

MOTOR

A power unit which converts electrical energy right into mechanical energy, particularly rotary motion.

RELAY

Basically, one electrically operated existing flow through a tiny coil create a magnetic field which either opens up or close the door an enclosed switch.

1. Typically switch which might be typically CLOSED closeup of the door (1) or open (2).

2. Normally OPEN

SPEAKER

An electromechanical machine which create sound waves from current flow.

SWITCH, MANUAL

1. Typically OPEN

RELAY, twin THROW

A relay i m sorry passes present through one set of contacts or the other.

RESISTOR

An electric component with a resolved resistance, placed in a circuit to minimize voltage come a specific value.

RESISTOR, TAPPED

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

Opens and also closes circuits, thereby protecting against (1) or permitting (2) current flow.

2. Normally CLOSED

*

RESISTOR, change or RHEOSTAT

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

*

SWITCH, dual THROW

A move which repetitively passes existing through one collection of contact or the other.

SWITCH, IGNITION

A crucial operated move with numerous positions which allows various circuits, an especially the main ignition circuit, to end up being operational.

(Reed switch Type)

SENSOR (Thermistor)

A resistor which varies its resistance with temperature.

SENSOR, SPEED

Uses magnetic impulses come open and also close a switch to develop a signal because that activation of various other components.

*
*

TRANSISTOR

A solidstate machine typically supplied as an electronic relay; stop or passes existing depending on the voltage used at "base".

SWITCH, WIPER PARK

Automatically returns wipers come the stop position when the wiper move is turned off.

TRANSISTOR

A solidstate maker typically supplied as an electronic relay; stop or passes existing depending ~ above the voltage used at "base".

SHORT PIN

Used to administer an unbroken link within a junction block.

SOLENOID

An electromagnetic coil which creates a magnetic ar when existing flows, to move a plunger, etc.

*

(2) SPLICED

WIRES

Wires are constantly drawn together (1) NOT directly lines on wiring

CONNECTED diagrams.

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Crossed wires (1) there is no a black dot at the junction are not joined; crossed wires (2) v a black color dot or octagonal ( O ) note at the junction room spliced (joined) connections.