Page 1
2007 4RUNNER
ELECTRICAL WIRING DIAGRAM
Section Code
INTRODUCTION A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
HOW TO USE THIS MANUAL B. . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING C. . . . . . . . . . . . . . . . . . . . . . . . . .
ABBREVIATIONS D. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GLOSSARY OF TERMS AND SYMBOLS E. . . . . . . . . 18
RELAY LOCATIONS F. . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL WIRING ROUTING G. . . . . . . . . . . . . . .
SYSTEM CIRCUITS H. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page
3
12
17
20
32
52
GROUND POINT I. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
POWER SOURCE (Current Flow Chart) J. . . . . . . . .
CONNECTOR LIST K. . . . . . . . . . . . . . . . . . . . . . . . . . . .
PART NUMBER OF CONNECTORS L. . . . . . . . . . . . .
OVERALL ELECTRICAL WIRING DIAGRAM M. . . . .
368
376
386
406
412
4RUNNER (EM03M0U)
1
Page 2
A INTRODUCTION
A
H
This manual consists of the following 13 sections:
No. Section Description
INDEX Index of the contents of this manual.
INTRODUCTION Brief explanation of each section.
HOW TO USE THIS
B
MANUAL
TROUBLE–
C
SHOOTING
D ABBREVIATIONS Defines the abbreviations used in this manual.
GLOSSARY OF
TERMS AND
E
SYMBOLS
Instructions on how to use this manual.
Describes the basic inspection procedures for electrical circuits.
Defines the symbols and functions of major parts.
F RELAY LOCATIONS
ELECTRICAL
G
WIRING ROUTING
INDEX Index of the system circuits.
SYSTEM CIRCUITS
I GROUND POINT Shows ground positions of all parts described in this manual.
POWER SOURCE
J
(Current Flow Chart)
K CONNECTOR LIST
PART NUMBER OF
L
CONNECTORS
Shows position of the Electronic Control Unit, Relays, Relay Block, etc.
This section is closely related to the system circuit.
Describes position of Parts Connectors, Splice points, Ground points, etc.
This section is closely related to the system circuit.
Electrical circuits of each system are shown from the power supply through ground
points. Wiring connections and their positions are shown and classified by code
according to the connection method. (Refer to the section, ”How to use this manual”).
The ”System Outline” and ”Service Hints” useful for troubleshooting are also contained
in this section.
(Only wiring information for complete circuits is included.)
Describes power distribution from the power supply to various electrical loads.
Describes the form of the connectors for the parts appeared in this book.
This section is closely related to the system circuit.
Indicates the part number of the connectors used in this manual.
OVERALL
ELECTRICAL
M
WIRING DIAGRAM
Provides circuit diagrams showing the circuit connections.
(Only wiring information for complete circuits is included.)
2
4RUNNER (EM03M0U)
Page 3
FOREWORD
This wiring diagram manual has been prepared to provide
information on the electrical system of the 2007 4RUNNER.
Applicable models: UZN210, 215 Series
GRN210, 215 Series
Refer to the following manuals for additional service
specifications and repair procedures for these models:
Manual Name
" 2007 4RUNNER Repair Manual
" 2007 TOYOTA New Car Features
All information in this manual is based on the latest product
information at the time of publication. However, specifications
and procedures are subject to change without notice.
Pub. No.
RM03M0U
NM04J0U
NOTICE
Always follow the directions given in the above repair manuals when handling
supplemental restraint system components (such as removal, installation,
inspection, etc.) in order to prevent accidents and supplemental restraint
system malfunction.
!2006
All ri ghts reser ved. This bo ok may not be
reproduced or copied, in whole or in part, without
the written permi ssion of Toyota Motor
Corporation.
First Printing : Jul. 06, 2006 01–060706–00
Page 4
HOW TO USE THIS MANUAL B
This manual provides information on the electrical circuits installed on vehicles by
dividing them into a circuit for each system.
The actual wiring of each system circuit is shown from the point where the power
source is received from the battery as far as each ground point. (All circuit
diagrams are shown with the switches in the OFF position.)
When troubleshooting any problem, first understand the operation of the circuit
where the problem was detected (see System Circuit section), the power source
supplying power to that circuit (see Power Source section), and the ground points
(see Ground Point section). See the System Outline to understand the circuit
operation.
When the circuit operation is understood, begin troubleshooting of the problem
circuit to isolate the cause. Use Relay Location and Electrical Wiring Routing
sections to find each part, junction block and wiring harness connectors, wiring
harness and wiring harness connectors and ground points of each system circuit.
Internal wiring for each junction block is also provided for better understanding of
connection within a junction block.
Wiring related to each system is indicated in each system circuit by arrows
(from__, to__). When overall connections are required, see the Overall Electrical
Wiring Diagram at the end of this manual.
4RUNNER (EM03M0U)
3
Page 5
B HOW TO USE THIS MANUAL
* The system shown here is an EXAMPLE ONLY. It is different to the actual
circuit shown in the SYSTEM CIRCUITS SECTION.
[A]
Stop Light
[D]
Skid Control ECU
with Actuator
[B]
G – W
(BAT)
2
1
W – RG – W
2
1
G – W
15A
STOP
S6
Stop Light SW
(IG)
7.5A
GAUGE
34
IB
R
[N]
(S/D)
[C]
IE114
LL
(W/G)
IE1
15
L
[E]
(S/D) (S/D)
[F]
IB
R – L
3C
7
[G]
3C
15
R – L
4
Rear
Lights
C7
13
Y – G
Combination Meter
L4
7
Light Failure Sensor
12
48
11
[H]
1
G – R
BV1
G – R G – R
4
Stop
Rear Combination
R7
3
W – B G – R
Light RH
1
BV1
3
6
W – BW – B
W – B
BO BL
Stop
[I]
Rear Combination
R6
Light LH
[L]
[J]
(Shielded)
[K]
G – B
2
1
W – B
H17
High Mounted
Stop Light
W – B
4
50
[M]
4RUNNER (EM03M0U)
Page 6
B
[A] :System Title
[B] : Indicates a Relay Block. No shading is used and
only the Relay Block No. is shown to distinguish it
from the J/B
Example: Indicates Relay Block No.1
[C] : ( ) is used to indicate di fferen t wiring and
connector, etc. when the vehicle model, engine
type, or specification is different.
[D] : Indicates related system.
[E] : Indicates the wiring harness and wiring harness
connector. The wiring harness with male terminal is
shown with arrows (
).
Outside numerals are pin numbers.
Female Male ( )
The first letter of the code for each wiring harness
and wiring harness connector(s) indicates the
component’s location, e.g, ”E” for the Engine
Compartment, ”I” for the Instrument Panel and
Surroundi ng area, and ”B ” for the Body an d
Surrounding area.
When more than one code has the first and second
letters in common, followed by numbers (e.g, IH1,
IH2), this indicates the same type of wiring harness
and wiring harness connector.
[F] :Represents a part (all parts are shown in sky blue).
The code is the same as the code used in parts
position.
[G] : Junction Block (The number in the circle is the J/B
No. and the connector code is shown beside it).
Junction Blocks are shaded to clearly separate
them from other parts.
[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 the
second 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 and
male connectors.
Example:
Numbered in order
from upper left to
lower right
Numbered in order
from upper right to
lower left
Example:
3C indicates that
it is inside
Junction Block
No.3
[L] :Indicates a ground point.
The first letter of the code for each ground point(s)
indicates the component’s location, e.g, ”E” for the
Engine Compartment, ”I” for the Instrument Panel
and Surrounding area, and ”B” for the Body and
Surrounding area.
[M] : Page No.
[N] : Indicates the ignition key position(s) when the
power is supplied to the fuse(s).
4RUNNER (EM03M0U)
Female
Male
5
Page 7
B HOW TO USE THIS MANUAL
[O]
[P]
[Q]
[R]
System Outline
Current is applied at all times through the STOP fuse to TERMINAL 2 of the stop light SW.
When the ignition SW is turned on, current flows from the GAUGE fuse to TERMINAL 8 of the light failure sensor, and also flows
through the rear lights warning light to TERMINAL 4 of the light failure sensor.
Stop Light Disconnection Warning
When the ignition SW is turned on and the brake pedal is pressed (Stop light SW on), if the stop light circuit is open, the current
flowing from TERMINAL 7 of the light failure sensor to TERMINALS 1, 2 changes, so the light failure sensor detects the
disconnection and the warning circuit of the light failure sensor is activated.
As a result, the current flows from TERMINAL 4 of the light failure sensor to TERMINAL 11 to GROUND and turns the rear lights
warning light on. By pressing the brake pedal, the current flowing to TERMINAL 8 of the light failure sensor keeps the warning
circuit on and holds the warning light on until the ignition SW is turned off.
: 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)
[S]
[T]
: 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
6
4RUNNER (EM03M0U)
Page 8
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
[Q] : Indicates the reference page showing the position on the vehicle of Relay Block Connectors in the system circuit.
Example : Connector ”1” is described on page 18 of this manual and is installed on the left side of the instrument
panel.
[R] : Indicates the reference page showing the position on the vehicle of J/B and Wire Harness in the system circuit.
Example : Connector ”3C” connects the Instrument Panel Wire and J/B No.3. It is described on page 22 of this
manual, and is installed on the instrument panel left side.
Parts is 4th in order
Light Failure Sensor
[S] : Indicates the reference page describing the wiring harness and wiring harness connector (the female wiring
harness is shown first, followed by the male wiring harness).
Example : Connector ”IE1” connects the floor wire (female) and Instrument panel wire (male). It is described on
page 42 of this manual, and is installed on the left side kick panel.
[T] : Indicates the reference page showing the position of the ground points on the vehicle.
Example : Ground point ”BO” is described on page 50 of this manual and is installed on the back panel center.
4RUNNER (EM03M0U)
7
Page 9
B HOW TO USE THIS MANUAL
The ground points circuit diagram shows the connections from all major parts to the respective ground points. When
troubleshooting a faulty ground point, checking the system circuits which use a common ground may help you identify
the problem ground quickly. The relationship between ground points (
checked this way.
I GROUND POINT
EA, IB
and
IC
shown below) can also be
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 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
W–B
5
W–B
5
W–B
5
W–B
5
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
4
5
BR BR
W–B
W–B
W–B
W–B
2
IA1
8
IB1
W–B
444
4
4BA1
Cigarette Lighter
O/D Main SW
Clock
Front Fog Light RH
Front Fog Light LH
Brake Fluid Level SW
W–B
W–B
10
EA2
W–B
EA
W–B
W–B
A
W–B
A
W–B
A
A
A
A
J 1
Junction
Connector
7
3B
7
3C
1
3D
3
3F
13
3G
5
3E
6
3E
W–B
W–B
15
ID1
W–B W–B
W–B (4A–GZE)
W–B
4
W–B
3
IC3
BR
W–B
W–B
W–BW–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
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–BW–B
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
Combination SW
Unlock Warning SW
Power Window Master SW
Power Window Control
Relay
Door Courtesy SW LH
Door Lock Control SW
Door Lock Motor LH
Fuel Control SW
Woofer Speaker Amplifier
BR
Combination Meter
BRBR
Combination Meter
BR
Fuel Sender
W–B
IB
IC
* The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.
8
4RUNNER (EM03M0U)
Page 10
B
The ”Current Flow Chart” section, describes which parts each power source (fuses, fusible links, and circuit breakers)
transmits current to. In the Power Source circuit diagram, the conditions when battery power is supplied to each system
are explained. Since all System Circuit diagrams start from the power source, the power source system must be fully
understood.
J POWER SOURCE (Current Flow Chart)
The chart below shows the route by which current flows from the battery to each electrical source
(Fusible Link, Circuit Breaker, Fues, etc.) and other parts
Battery
30A AM2
Starter
2
S 2
Fusible Link Block
100A ALT
Engine Room R/B (See Page 20)
System
ABS
ABS and Traction Control
Cruise Control
Electronically Controlled Transmission
Multiplex Communication System
Cigarette Lighter
Combination Meter
Headlight
Interior Light
Key Reminder and Seat Belt Warning
Light Auto Turn Off System
Theft Deterrent and Door Lock Control
20A
10A
Fuse
STOP
DOME
Power Source
6
6
Short Pin
15A EFI
10A HAZARD
20A RADIO NO.1
10A HORN
60A ABS
10A ECU–B
2
7.5A DOME
2
5
2
Page
194
187
180
166
210
214
230
112
122
1
B
BA1
B
2
B
2
1.25B
FL MAIN
W
50A MAIN
7.5A AM1
15A HAZ–RADIO
1
Battery
W – R
W
EB1
EB1
7
6
21
2
21
2
2
2
ACC
WW
W – R
8
AM1
IG1
ST1
2
W
W
4
AM2
I8
Ignition SW
IG2
ST2
B – Y
7.5A DOME
1
1
20A DEFOG
121W – R
1
2
R
1
∗ The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.
9
4RUNNER (EM03M0U)
Page 11
B HOW TO USE THIS MANUAL
K CONNECTOR LIST
I14
Dark Gray
[A]
I15
I16
Gray
[C]
1234
1234
5678
J1 J4 K1 K2 L1
Black
AB
B
AABCCCDDDD
[B]
A
AAA
A
K CONNECTOR LIST
Black
BA1
123 45
678910111213
13 6789101112
12345 76
[D]
Dark Gray
AAA
[E]
12345
1
12 34
567891011
12
BD2
12
Gray
43 21
11
[F]
5678910
[A] : Indicates connector to be connected to a part. (The numeral indicates the pin No.)
[B] : Junction Connector
Indicates a connector which is connected to a short terminal.
Junction Connector
Junction connector in this manual include a short terminal which is
connected to a number of wire harnesses. Always perform
inspection with the short terminal installed. (When installing the
wire harnesses, the harnesses can be connected to any position
within the short terminal grouping. Accordingly, in other vehicles,
the same position in the short terminal may be connected to a wire
harness from a different part.)
Wire harness sharing the same short terminal grouping have the
same color.
Same Color
Short Terminal
[C] : Parts Code
The first letter of the code is taken from the first letter of part, and the numbers indicates its order in parts which
start with the same letter.
[D] : Connector Color
Connectors not indicated are milky white in color.
[E] : Indicates the connector shapes which are used to join wire harnesses.
On Left : Female connector shapes
On Right : Male connector shapes
Numbers indicate pin numbers.
[F] : Indicates connector colors. (Connectors with not indicated colors are white)
10
4RUNNER (EM03M0U)
Page 12
L PART NUMBER OF CONNECTORS
B
Code
A 1
A/C Ambient Temp. Sensor
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
A 5 A/C Magnetic Clutch
A 6 A/T Oil Temp. Sensor
A 7 ABS Actuator
[A]
A 8 ABS Actuator
A 9 ABS Speed Sensor Front LH
ABS Speed Sensor Front RH
A10
A11
Airbag Sensor Front LH Door Courtesy SW Rear LH
A12
Airbag Sensor Front RH Door Courtesy SW Rear RH
A13 Airbag Squib 90980–11194 Door Key Lock and Unlock SW LH
[B] [C]
[A] :Part Code
[B] : Part Name
[C] : Part Number
Toyota Part Number are indicated.
Part Number
90980–11070
90980–11271
90980–11413
90980–11151
90980–11009
90980–10941
90980–11002
90980–11856
90980–11070
Code
D 4 Diode (Courtesy)
D 7 Door Lock Control Relay 90980–10848
D 8 Door Lock Control SW LH
D 9 Door Lock Control SW RH
D10
Door Courtesy SW LH
D11
Door Courtesy SW RH
D12
Door Courtesy SW Front LH
D13
Door Courtesy SW Front RH
D14
D15
D16
D17 Door Key Lock and Unlock SW RH
Part NumberPart NamePart Name
90980–11608
90980–11148
90980–11097
90980–11156
90980–11170
Not all of the above part numbers of the connector are established for the supply.
4RUNNER (EM03M0U)
11
Page 13
C TROUBLESHOOTING
SW 2
To Ignition SW
IG Terminal
Fuse
[A]
[B]
Relay
[C]
Solenoid
VOLTAGE CHECK
(a) Establish conditions in which voltage is present at the check
point.
Example:
[A] – Ignition SW on
[B] – Ignition SW and SW 1 on
[C] – Ignition SW, SW 1 and Relay on (SW 2 off)
(b) Using a voltmeter, connect the negative lead to a good ground
VoltmeterSW 1
point or negative battery terminal, and the positive lead to the
connector or component terminal.
This check can be done with a test light instead of a voltmeter.
CONTINUITY AND RESISTANCE CHECK
Ohmmeter
SW
Ohmmeter
Diode
Digital Type Analog Type
(a) Disconnect the battery terminal or wire so there is no voltage
between the check points.
(b) Contact the two leads of an ohmmeter to each of the check
points.
If the circuit has diodes, reverse the two leads and check
again.
When contacting the negative lead to the diode positive side
and the positive lead to the negative side, there should be
continuity.
When contacting the two leads in reverse, there should be no
continuity.
(c) U se a volt/ohm meter with high im pedance (10 kΩ/V
minimum) for troubleshooting of the electrical circuit.
12
4RUNNER (EM03M0U)
Page 14
C
Test Light
Disconnect
To Ignition SW
IG Terminal
Fuse Case
Short [A]
SW 1
Short [B]
Disconnect
RelayLight
Short [C]
Disconnect
SW 2 Solenoid
FINDING A SHORT CIRCUIT
(a) Remove the blown fuse and disconnect all loads of the fuse.
(b) Connect a test light in place of the fuse.
(c) Establish conditions in which the test light comes on.
Example:
[A] – Ignition SW on
[B] – Ignition SW and SW 1 on
[C] – Ignition SW, SW 1 and Relay on (Connect the
Relay) and SW 2 off (or Disconnect SW 2)
(d) Disconnect and reconnect the connectors while watching the
test light.
The short lies between the connector where the test light
stays lit and the connector where the light goes out.
(e) Find the exact location of the short by lightly shaking the
problem wire along the body.
CAUTION:
(a) Do not open the cover or the case of the ECU unless
absolutely necessary. (If the IC terminals are touched,
the IC may be destroyed by static electricity.)
(b) When replacing the internal mechanism (ECU part) of
the digital meter, be careful that no part of your body or
clothing comes in contact with the terminals of leads
from the IC, etc. of the replacement part (spare part).
DISCONNECTION OF MALE AND FEMALE
CONNECTORS
To pull apart the connectors, pull on the connector itself, not
the wire harness.
HINT : Check to se e what kind of c onnector you a re
disconnecting before pulling apart.
Pull Up
Press Down Press Down
Pull Up
4RUNNER (EM03M0U)
13
Page 15
C TROUBLESHOOTING
Reference:
!"
!
Example:
(Case 1)
Terminal Retainer
HOW TO REPLACE TERMINAL
(with terminal retainer or secondary locking device)
1. PREPARE THE SPECIAL TOOL
#
"$%
Up
Tool
!
(mm)
HINT : To remove the terminal from the connector, please
construct and use the special tool or like object shown on
the left.
2. DISCONNECT CONNECTOR
3. DIS EN GAGE THE S EC ON DARY LOCKING DEVICE OR
TERMINAL RETAINER.
(a) Locking device must be disengaged before the terminal
locking clip can be released and the terminal removed from
the connector.
(b) Use a special tool or the terminal pick to unlock the secondary
locking device or terminal retainer.
NOTICE:
Do not remove the terminal retainer from connector body.
Terminal Retainer
[Retainer at Full Lock Position]
Stopper
[Retainer at Temporary Lock Position]
Example:
(Case 2)
Terminal
Retainer
Secondary
Locking Device
[A] For Non–Waterproof Type Connector
HINT : The needle insertion position varies according to the
connector’s shape (number of terminals etc.), so
check the position before inserting it.
”Case 1”
Raise the terminal retainer up to the temporary lock
position.
”Case 2”
Open the secondary locking device.
14
4RUNNER (EM03M0U)
Page 16
Tab
Tab
C
Tool
Example:
(Case 1)
Tool
[Male]
Terminal
Retainer
Access Hole
( Mark)
Retainer
at Full Lock Position
[Female]
Tool
[B] For Waterproof Type Connector
HINT : Terminal retainer color is different
according to connector body.
Example:
Terminal Retainer
: Connector Body
Black or White : Gray
Black or White : Dark Gray
Gray or White : Black
”Case 1”
Type where terminal retainer is pulled
up to the temporary lock position (Pull
Type).
Insert the special tool into the terminal
retainer access hole (!Mark) and pull
the t erminal re tainer up to the
temporary lock position.
HINT : The needle insertion position varies
according to the connector’s shape
(Number of terminals etc.), so check
the position before inserting it.
Example:
(Case 2)
[Male]
Retainer
at Temporary Lock Position
[Male] [Female]
Terminal Retainer
Tool
Press Down
Press Down
[Female]
4RUNNER (EM03M0U)
”Case 2”
Type whic h cannot be pulled as far as
Power Lock insert the tool straight into
the access hole of terminal retainer as
shown.
Tool
15
Page 17
C TROUBLESHOOTING
Retainer at
Full Lock Position
Retainer at
Temporary Lock Position
[Male] [Female]
Push the terminal retainer down to the temporary lock position.
Locking Lug
(c) Release the locking lug from terminal and pull the terminal out
from rear.
Tool
4. INSTALL TERMINAL TO CONNECTOR
(a) Insert the terminal.
HINT:
1. Make sure the terminal is positioned correctly.
2. Insert the terminal until the locking lug locks firmly.
3. Insert the terminal with terminal retainer in the temporary lock
position.
16
(b) Push the secondary locking device or terminal retainer in to
the full lock position.
5. CONNECT CONNECTOR
4RUNNER (EM03M0U)
Page 18
ABBREVIATIONS
The following abbreviations are used in this manual.
2WD = Two Wheel Drive Vehicles
4WD = Four Wheel Drive Vehicles
A/C = Air Conditioning
A/T = Automatic Transmission
ABS = Anti–Lock Brake System
ACIS = Acoustic Control Induction System
ADD = Automatic Disconnecting Differential
BEAN = Body Electronics Area Network
CAN = Controller Area Network
CD = Compact Disc
DIFF. = Differential
EC = Electrochromic
ECU = Electronic Control Unit
ABBREVIATIONS D
ESA = Electronic Spark Advance
ETCS–i = Electronic Throttle Control System–intelligent
IC = Integrated Circuit
INT = Intermittent
J/B = Junction Block
LH = Left–Hand
LSD = Limited Slip Differential
R/B = Relay Block
RH = Right–Hand
SFI = Sequential Multiport Fuel Injection
SPEC. = Specification
SRS = Supplemental Restraint System
SW = Switch
TEMP. = Temperature
TRAC = Traction Control
TVIP = TOYOTA Vehicle Intrusion Protection
VSC = Vehicle Stability Control
VSV = Vacuum Switching Valve
VVT = Variable Valve Timing
VVT–i = Variable Valve Timing–intelligent
w/ = With
w/o = Without
∗ The titles given inside the components are the names of the terminals (terminal codes) and are not treated as being
abbreviations.
4RUNNER (EM03M0U)
17
Page 19
E GLOSSARY OF TERMS AND SYMBOLS
FUSIBLE LINK
FUSIBLE LINK
BATTERY
Stores chemical energy and
converts it into electrical energy.
Provides DC current for the auto’s
various electrical circuits.
CAPACITOR (Condenser)
A small holding unit for temporary
storage of electrical voltage.
CIGARETTE LIGHTER
An electric resistance heating
element.
CIRCUIT BREAKER
Basically a reusable fuse, a circuit
breaker will heat and open if too
much current flows through it.
Some units automatically reset when
cool, others must be manually reset.
DIODE
A semiconductor which allows
current flow in only one direction.
1. SINGLE
FILAMENT
2. DOUBLE
FILAMENT
GROUND
The point at which wiring attaches to
the Body, thereby providing a return
path for an electrical circuit; without a
ground, current cannot flow.
HEADLIGHTS
Current flow causes a headlight
filament to heat up and emit light. A
headlight may have either a single
(1) filament or a double (2) filament
HORN
An electric device which sounds a
loud audible signal.
IGNITION COIL
Converts low–voltage DC current
into high–voltage ignition current for
firing the spark plugs.
(for Medium Current Fuse)
(for High Current Fuse or
Fusible Link)
DIODE, ZENER
A diode which allows current flow in one
direction but blocks reverse flow only up
to a specific voltage. Above that potential,
it passes the excess voltage. This acts as
a simple voltage regulator.
PHOTODIODE
The photodiode is a semiconductor
which controls the current flow
according to the amount of light.
DISTRIBUTOR, IIA
Channels high–voltage current from
the ignition coil to the individual
spark plugs.
FUSE
A thin metal strip which burns through
when too much current flows through it,
thereby stopping current flow and
protecting a circuit from damage.
A heavy–gauge wire placed in high
amperage circuits which burns through on
overloads, thereby protecting the circuit.
The numbers indicate the crosssection
surface area of the wires.
FUEL
M
LIGHT
Current flow through a filament
causes the filament to heat up and
emit light.
LED (LIGHT EMITTING DIODE)
Upon current flow, these diodes emit
light without producing the heat of a
comparable light.
METER, ANALOG
Current flow activates a magnetic
coil which causes a needle to move,
thereby providing a relative display
against a background calibration.
METER, DIGITAL
Current flow activates one or many
LED’s, LCD’s, or fluorescent
displays, which provide a relative or
digital display.
MOTOR
A power unit which converts
electrical energy into mechanical
energy, especially rotary motion.
18
4RUNNER (EM03M0U)
Page 20
E
Opens and closes
operational.
black dot at the junction are
black dot at the junction are
RELAY
1. NORMALLY
CLOSED
2. NORMALLY
OPEN
RELAY, DOUBLE THROW
RESISTOR
RESISTOR, TAPPED
RESISTOR, VARIABLE or RHEOSTAT
Basically, an electrically operated
switch which may be normally
closed (1) or open (2).
Current flow through a small coil
creates a magnetic field which either
opens or closes an attached switch.
A relay which passes current
through one set of contacts or the
other.
An electrical component with a fixed
resistance, placed in a circuit to
reduce voltage to a specific value.
A resistor which supplies two or
more different non adjustable
resistance values.
A controllable resistor with a variable
rate of resistance.
Also called a potentiometer or
rheostat.
SPEAKER
An electromechanical device which
creates sound waves from current
flow.
SWITCH, MANUAL
Opens and closes
1. NORMALLY
OPEN
2. NORMALLY
CLOSED
SWITCH, DOUBLE THROW
A switch which continuously passes
current through one set of contacts
or the other.
SWITCH, IGNITION
A key operated switch with several
positions which allows various
circuits, particularly the primary
ignition circuit, to become
operational.
circuits, thereby
stopping (1) or
allowing (2) current
flow.
(Reed Switch Type)
SENSOR (Thermistor)
A resistor which varies its resistance
with temperature.
SENSOR, SPEED
Uses magnetic impulses to open
and close a switch to create a signal
for activation of other components.
SHORT PIN
Used to provide an unbroken
connection within a junction block.
SOLENOID
An electromagnetic coil which forms
a magnetic field when current flows,
to move a plunger, etc.
SWITCH, WIPER PARK
Automatically returns wipers to the
stop position when the wiper switch
is turned off.
TRANSISTOR
A solidstate device typically used as
an electronic relay; stops or passes
current depending on the voltage
applied at ”base”.
WIRES
(1) NOT
CONNECTED
(2) SPLICED
Wires are always drawn as
straight lines on wiring
diagrams.
Crossed wires (1) without a
not joined;
crossed wires (2) with a
black dot or octagonal ( )
mark at the junction are
spliced (joined)
connections.
19
4RUNNER (EM03M0U)
Page 21
F RELAY LOCATIONS
t
[Engine Compartment]
Engine Room R/B No.3Skid Control ECU
with Actuator
Air Injection
Control Driver
[Body]
Moon Roof Control ECU
Engine Room
R/B
Engine Room R/B No.4
Rear Seat Audio Controller Tire Pressure Warning
Antenna and Receiver
Stereo Componen
Amplifier
20
Towing Converter Relay
4RUNNER (EM03M0U)
Door Control Receiver Back Door ECU
Page 22
[Instrument Panel]
l
l
l
y
F
Suspension
Control ECU
Turn Signal
Flasher Relay
Daytime Running
Light Relay
Transponder Key
Amplifier
Driver Side J/B
Center J/B
Body ECU
Theft Deterrent
ECU
Airbag Sensor
Assembly
Transponder Ke
Computer
Engine Contro
Module
4WD Contro
ECU
Tire Pressure
Warning ECU
A/C Contro
Assembly
Shift Lock
Control ECU
[Seat]
ECU and SW
Occupant Classification ECUPosition Control
21
4RUNNER (EM03M0U)
Page 23
F RELAY LOCATIONS
2
: Engine Room R/B Engine Compartment Left (See Page 20)
* 1:ACC CUT Relay
* 2:FR FOG Relay
* 3:STA Relay
* 4:HEATER Relay
* 5:MG CLT Relay
* 6:RADIO NO.1
* 7:C/OPN Relay
* 8:DOME Relay
* 9:EFI Relay
* 10:A/F HEATER Relay
* 11:HEAD (LO LH)
* 12:HEAD (HI LH)
40A TOWING
(for High Current)
30A BATT CHG
(for High Current)
50A J/B
(for High Current)
30A TOWING BRK
(for High Current)
50A AM1
(for High Current)
50A AIR SUS
(for High Current)
50A A/PUMP
(for High Current)
140A ALT
(for High Current)
7.5A
12
OBD
15A
12
FR FOG
15A
12
AC115V INV
10A
12
STOP
1
*3
*2 *4
21
2
*1
21
21
21
21
21
IG Relay DEFOG Relay
5
21
3
*5
3
5
12
354
12
7.5A
AIRSUS NO.2
HEATER NO.2
3
5
12
3
5
1
2
4321
12
AC115V INV Relay
3
5
42
1
3
5
12
2
1
12
12
1
10A
25A
30A
DEFOG
2
SEAT HEATER
10A 2
HEAD (LO RH)
212
*11
10A
HEAD (HI RH)
MIR HEATER
10A
FUEL PUMP Relay
3
5
2
14
35
*10
35
*9
10A
2
*12
1
2
10A
*8
*7
2
10A
EFI NO.2
1
5
3
ECU-B
10A 2
*6
20A12
DOME
10A 2
3
5
12
3
5
142
21
RADIO NO.2
2
1
2
1
2
1
A/F HEATER
3
20A21
TOWING
30A21
DR/LCK
20A21
EFI
20A21
ETCS
10A21
TRN-HAZ
15A21
15A21
HORN
10A21
ALT-S
7.5A21
Short Pin
221
1
1
2
1
2
2
5
1
60A HEATER
(for High Current)
30A ABS SOL
(for High Current)
30A AM2
(for High Current)
40A ABS MTR
(for High Current)
HEAD Relay
22
STOP LP CTRL Relay
4RUNNER (EM03M0U)
Page 24
3
: Engine Room R/B No.3 Engine Compartment Left (See Page 20)
F
3
12
5
TOWING TAIL RelayBATT CHG Relay
4
: Engine Room R/B No.4 Engine Compartment Left (See Page 20)
3
12
5
3
12
5
AIR SUS Relay
4RUNNER (EM03M0U)
23
Page 25
F RELAY LOCATIONS
: Driver Side J/B Lower Finish Panel (See Page 21)
4WD
20A
FR WIP-WSH
30A
STA NO.2
7.5A
GAUGE
7.5A
SRS
10A
IGN
10A
2019 1817
10 9 8 7
161514 1312 11
654321
(from Roof Wire)
1A
910
654321
87
1920 16 1514 13 121118 17
IG1
15A
ECU-IG
10A
RR WSH
15A
PWR OUTLET
15A
P P/SEAT
30A
D P/SEAT
30A
SECU/HORN
CIG
10A
ACC
7.5A
TAIL
10A
10A
12
21
12345
678910111213
1B
123 45
678910111213
(from Engine Room Main Wire)
30A POWER
(for Medium Current)
1C
12
216
5
4
3
(from Engine Room Main Wire)
1D
6
5
4
123
(from Engine Room Main Wire)
9101112 8 7 6 5 4 3 2 1
21222324 20 19 1817 16 1514 13
7865432
1516 14 13 12 1110
1F 1E
1516
78152364
913 101114 12
(from Floor No.2 Wire)
1
9
1817 1615 1413201924 2322 21
6543218712 1110 9
(from Engine Room Main Wire)
24
4RUNNER (EM03M0U)
Page 26
Body ECU
1
13
2
14
3
15
4
16
5
17
6
18
7
19
8
20
9
21
10
22
11
23
12
24
F
POWER Relay
TAIL Relay
HORN Relay
1H
12
34
(from Instrument
Panel Wire)
35
21
9
1
2
1
34
35
15 161413121110
7865432
2
1
222120191817
654321
35
25262423
9 1087
2
1
35
323130292827
161514131211
4
2
3
2
1
1
2122 23 242019181716151413
9 10 111287654321
1K 1L 1J
16 15 14 1013 1211
87 6 254 13
9
87 1211109
654321
181716151413 2019 24232221
1G
DC SKT Relay
4
3
2
1
(from Instrument
Panel Wire)
17181920212223242526272829303132
12345678910111213141516
(from Instrument Panel Wire)
(from Instrument Panel Wire) (from Instrument Panel Wire)
25
4RUNNER (EM03M0U)
Page 27
F RELAY LOCATIONS
[Driver Side J/B Inner Circuit]
13
10
10
23
24
17
18
15
22
19
10
10
3
1D
1L
4
1D
1J
6
1D
2
1L
1
1J
2
1J
1F
1
1C
1J
7
1E
8
1E
1J
2
1G
1
1L
9
1F
5
1J
1E
1E
6
1J
3
1G
4
1J
1F
6
1E
1J
9
1A
4
1A
1A
5
1D
3
1E
1A
1E
7.5A STA NO.2
10A IGN
7.5A GAUGE
10A SRS
10A SECU/HORN
30A P P/SEAT
30A D P/SEAT
30A POWER
15
TAIL Relay
5
1
15A PWR OUTLET
7.5A ACC
23
3
2
10A CIG
POWER Relay
2
10A TAIL
DC SKT Relay
3
1
HORN Relay
5
1
5
2
3
21
15
23
11
20
10
12
14
32
29
25
11
21
11
13
16
30
31
17
2
1K
4
1K
1E
1L
1E
1J
4
1G
1L
3
1H
4
1H
1K
1K
1K
1J
1J
1
1A
1
1H
1J
2
1F
1A
1J
9
1B
1B
5
1L
1F
1E
1J
1J
8
1K
1L
1
1D
26
1
2
(Cont. Next Page)
4RUNNER (EM03M0U)
13
1K
Page 28
(Cont'd)
F
17
18
20
15
16
16
12
14
15
16
18
21
22
23
24
11
16
24
12
16
26
2
1C
1
1E
2
1E
1J
1J
1J
1K
1L
1K
4
1F
4
1B
5
1B
4
1L
1F
1J
1J
1J
6
1B
1L
1L
1L
1L
1L
6
1F
8
1B
1
1G
1K
5
1A
9
1K
8
1A
1A
1E
1J
1F
9
1E
1J
7 8 11 5 1 10 18 22 4
BZR2
BECU
24
17
14
13
12
3
HAZ
ACT-
HRLY
SPD
ILE
STPI
BDR1
LSR
15A IG1
10A ECU-IG
30A FR WIP-WSH
15A RR WSH
20A 4WD
Body ECU
WIG
SIG
TRLY
ACC
GND1
21
PWS
WMTR
GND2
L1
L2
UL1
ACT+
RDEF
BZR
16
19
20
15
23
2
6
9
20
12
28
22
11
12
13
13
12
15
13
14
18
10
11
12
14
10
1E
8
1J
2
1A
7
1K
1E
1J
8
1F
3
1A
1E
9
1J
3
1L
1F
1B
1B
6
1K
1J
2
1H
1A
1A
1A
7
1A
6
1A
1A
1A
5
1K
3
1K
1
1K
6
1L
9
1L
1L
1L
1L
1F
1
1B
3
1B
1B
4RUNNER (EM03M0U)
27
Page 29
F RELAY LOCATIONS
: Center J/B Instrument Panel Brace RH (See Page 21)
Black
AA A
BBBB B
3A 3B
(from Instrument Panel Wire)
AAA
BBBBB
AA
BBBBB
AAAA
BBBBBB
B
(from Instrument Panel Wire)
AA
Gray
AAABBBBCCC
3C
DDDEEEFFFGGG
AAABB BBCC
DDD EE E F F F GGG
C
(from Instrument Panel Wire)
Black
AAAAABBBB
CCCDDDDDDDD
3D
AAAAA BBBB
CCC DD D D DD DD
(from Instrument Panel Wire)
Dark Gray
AAABBBBBBB
CCCDDDEEEFFF
3E
AAA
CCCBDBDDEE
BBEBBB
FFF
(from Instrument Panel Wire)
AAAAAAAAA
BBBBBBBBBBB
3F
AAA
BBBABABBBB
AABAA
BB
28
(from Instrument Panel Wire)
4RUNNER (EM03M0U)
Page 30
Memo
4RUNNER (EM03M0U)
29
Page 31
F RELAY LOCATIONS
[Center J/B Inner Circuit]
A
3A
A
3A
A
3A
B
3A
B
3A
B
3A
B
3A
B
3A
A
3B
A
3B
A
3B
A
3B
B
3B
B
3B
B
3B
B
3B
B
3B
B
3B
C
3C
C
3C
C
3C
B
3C
B
3C
B
3C
B
3C
A
3C
A
3C
A
3C
F
3C
F
3C
F
3C
G
3C
G
3C
G
3C
E
3C
E
3C
E
3C
D
3C
D
3C
D
3C
B
3D
B
3D
B
3D
B
3D
A
3D
A
3D
A
3D
A
3D
A
3D
D
3D
D
3D
D
3D
D
3D
D
3D
D
3D
D
3D
D
3D
C
3D
C
3D
C
3D
B
3E
B
3E
B
3E
B
3E
B
3E
B
3E
B
3E
A
3E
A
3E
A
3E
30
(Cont. Next Page)
4RUNNER (EM03M0U)
Page 32
F
(Cont'd)
F
3E
F
3E
F
3E
E
3E
E
3E
E
3E
D
3E
D
3E
D
3E
C
3E
C
3E
C
3E
A
3F
A
3F
A
3F
A
3F
A
3F
A
3F
A
3F
A
3F
A
3F
B
3F
B
3F
B
3F
B
3F
B
3F
B
3F
B
3F
B
3F
B
3F
B
3F
B
3F
4RUNNER (EM03M0U)
31
Page 33
G ELECTRICAL WIRING ROUTING
4
3
4
Position of Parts in Engine Compartment
[2UZ–FE]
G2 G1 H8A13A46 E1 H6 A45 A47 A12F7
B1
A4
A4
F8
A9
A10
F6
H4
H3
A 1 A/C Ambient Temp. Sensor
A 2 A/C Lock Sensor
A/C Magnetic Clutch
A 9 ABS Speed Sensor Front LH
A10 ABS Speed Sensor Front RH
A12 Air Fuel Ratio Sensor (Bank 1 Sensor 1)
A13 Air Fuel Ratio Sensor (Bank 2 Sensor 1)
A14 Airbag Sensor Front LH
A15 Airbag Sensor Front RH
A43 Air Injection Control Driver
A44 Air Injection Control Driver
A45 Air Pressure Sensor
A46 Air Pump
A47 Air Switching Valve
B14 Brake Fluid Level Warning SW
C 1 Camshaft Position Sensor
C 2 Camshaft Timing Oil Control Valve LH
C 3 Camshaft Timing Oil Control Valve RH
C 4 Crankshaft Position Sensor
A1 C1E3A15 C3 E2F2 H9 C4 H10A14 F1
E 1 Electronically Controlled Transmission Solenoid
E 2 Engine Coolant Temp. Sensor
E 3 Engine Hood Courtesy SW
F 1 Front Fog Light LH
F 2 Front Fog Light RH
F 5 Front Parking Light LH
Front Turn Signal Light LH
F 6 Front Parking Light RH
Front Turn Signal Light RH
F 7 Front Wiper Motor
F 8 Fuel Pump Resistor
G 1 Generator
G 2 Generator
H 1 Headlight LH (High)
H 2 Headlight LH (Low)
H 3 Headlight RH (High)
H 4 Headlight RH (Low)
H 6 Heated Oxygen Sensor (Bank 1 Sensor 2)
H 8 Heated Oxygen Sensor (Bank 2 Sensor 2)
H 9 Horn (High)
H10 Horn (Low)
C2
A2
F5
H2
H1
32
4RUNNER (EM03M0U)
Page 34
[2UZ–FE]
3
9
8
G
Position of Parts in Engine Compartment
I16I8 V13 K2 V11P1 T3 T4S2 I15 I13V1 V2 I7N1
S2
W
M1
I14
T1
I6
N2
V4
I4
V12
I12
I2
I 1 Ignition Coil and Igniter No.1
I 2 Ignition Coil and Igniter No.2
I 3 Ignition Coil and Igniter No.3
I 4 Ignition Coil and Igniter No.4
I 5 Ignition Coil and Igniter No.5
I 6 Ignition Coil and Igniter No.6
I 7 Ignition Coil and Igniter No.7
I 8 Ignition Coil and Igniter No.8
I 9 Injector No.1
I 10 Injector No.2
I 11 Injector No.3
I 12 Injector No.4
I 13 Injector No.5
I 14 Injector No.6
I 15 Injector No.7
I 16 Injector No.8
J 1 Junction Connector
J 2 Junction Connector
J 3 Junction Connector
K 1 Knock Sensor (Bank 1)
K 2 Knock Sensor (Bank 2)
M 1 Mass Air Flow Meter
N 1 Noise Filter (Ignition No.1)
N 2 Noise Filter (Ignition No.2)
S3 T2P3I10W1W2 I9K1 O1
O 1 Oil Pressure SW
P 1 Park/Neutral Position SW
P 3 Pressure SW
S 2 Starter
S 3 Starter
S28 Skid Control ECU with Actuator
S29 Skid Control ECU with Actuator
T 1 Theft Deterrent Horn
T 2 Throttle Control Motor
Throttle Position Sensor
T 3 Transfer Shift Actuator
T 4 Turbine Speed Sensor
V 1 VSV (ACIS)
V 2 VSV (Purge)
V 3 VVT Sensor (Bank 1)
V 4 VVT Sensor (Bank 2)
V 11 Vehicle Speed Sensor
(Electronically Controlled Transmission)
V12 VSV (Air Switching Valve Bank 1)
V13 VSV (Air Switching Valve Bank 2)
W 1 Washer Level Sensor
W 2 Washer Motor
W 3 Wireless Door Lock Buzzer
S2
I5
V3
I3
J3
J2
J1
I11
I1
4RUNNER (EM03M0U)
33
Page 35
G ELECTRICAL WIRING ROUTING
4
Position of Parts in Engine Compartment
[1GR–FE]
H6 E1 H8 C4E2 A13 F7
B1
F8
A12
A10
A11
F6
H4
H3
A 1 A/C Ambient Temp. Sensor
A 2 A/C Lock Sensor
A/C Magnetic Clutch
A 9 ABS Speed Sensor Front LH
A10 ABS Speed Sensor Front RH
A 11 ADD Actuator
A12 Air Fuel Ratio Sensor (Bank 1 Sensor 1)
A13 Air Fuel Ratio Sensor (Bank 2 Sensor 1)
A14 Airbag Sensor Front LH
A15 Airbag Sensor Front RH
B14 Brake Fluid Level Warning SW
C 2 Camshaft Timing Oil Control Valve LH
C 3 Camshaft Timing Oil Control Valve RH
C 4 Crankshaft Position Sensor
E 1 Electronically Controlled Transmission Solenoid
E 2 Engine Coolant Temp. Sensor
E 3 Engine Hood Courtesy SW
A1 C2E3A15 C3F2 H9 A2 H10 A14 F1
F 1 Front Fog Light LH
F 2 Front Fog Light RH
F 5 Front Parking Light LH
Front Turn Signal Light LH
F 6 Front Parking Light RH
Front Turn Signal Light RH
F 7 Front Wiper Motor
F 8 Fuel Pump Resistor
G 1 Generator
G 2 Generator
H 1 Headlight LH (High)
H 2 Headlight LH (Low)
H 3 Headlight RH (High)
H 4 Headlight RH (Low)
H 6 Heated Oxygen Sensor (Bank 1 Sensor 2)
H 8 Heated Oxygen Sensor (Bank 2 Sensor 2)
H 9 Horn (High)
H10 Horn (Low)
G2
G1
A9
F5
H2
H1
34
4RUNNER (EM03M0U)
Page 36
[1GR–FE]
3
9
8
G
Position of Parts in Engine Compartment
I13 N1P1 V1T3V11 T4 I14 K1 I6 I12 I4
V2
S2
I5
I3
I11
T1
I1
M1
I9
I 1 Ignition Coil and Igniter No.1
I 2 Ignition Coil and Igniter No.2
I 3 Ignition Coil and Igniter No.3
I 4 Ignition Coil and Igniter No.4
I 5 Ignition Coil and Igniter No.5
I 6 Ignition Coil and Igniter No.6
I 9 Injector No.1
I 10 Injector No.2
I 11 Injector No.3
I 12 Injector No.4
I 13 Injector No.5
I 14 Injector No.6
J 1 Junction Connector
J 2 Junction Connector
J 3 Junction Connector
K 1 Knock Sensor (Bank 1)
K 2 Knock Sensor (Bank 2)
M 1 Mass Air Flow Meter
V4P3P2W1W2 T2 V3 O1
P 1 Park/Neutral Position SW
P 2 Power Steering Oil Pressure SW
P 3 Pressure SW
S 2 Starter
S 3 Starter
S28 Skid Control ECU with Actuator
S29 Skid Control ECU with Actuator
T 1 Theft Deterrent Horn
T 2 Throttle Control Motor
Throttle Position Sensor
T 3 Transfer Shift Actuator
T 4 Turbine Speed Sensor
V 1 VSV (ACIS)
V 2 VSV (Purge)
V 3 VVT Sensor (Bank 2)
V 4 VVT Sensor (Bank 1)
V 11 Vehicle Speed Sensor
(Electronically Controlled Transmission)
W
S2
S3
S2
I2
J3
J2
J1
K2
I10
N 1 Noise Filter (Ignition No.1)
O 1 Oil Pressure SW
W 1 Washer Level Sensor
W 2 Washer Motor
W 3 Wireless Door Lock Buzzer
35
4RUNNER (EM03M0U)
Page 37
G ELECTRICAL WIRING ROUTING
7
8
5
6
(*3)(*4)
(*4) (*3)
(*1) (*2) (*1) (*2)
Position of Parts in Instrument Panel
A21A20
A39 A37 A29 A26 A28
A36 B1A27
A48 A49
* 1:w/ Side Airbag
* 2:w/o Side Airbag
* 3:Limited
* 4:Except Limited
A2
A1
A24
A42
B4
B5
B6
A19 A30 A31 A32 A33 A38A34
A16 A/C Control Assembly
A17 A/C Control Assembly
A18 A/C Evaporator Temp. Sensor
A19 A/C Room Temp. Sensor
A20 A/C Solar Sensor
A21 A/C Solar Sensor
A22 A/T Shift Lever Illumination
A24 Accel Position Sensor
A25 Air Inlet Control Servo Motor
A26 Air Mix Control Servo Motor
A27 Air Mix Control Servo Motor LH
A28 Air Mix Control Servo Motor RH
A29 Air Vent Mode Control Servo Motor
A30 Airbag Sensor Assembly
A31 Airbag Sensor Assembly
A32 Airbag Sensor Assembly
A33 Airbag Sensor Assembly
A34 Airbag Sensor Assembly
A36 Airbag Squib (Steering Wheel Pad)
A37 Antenna Amplifier
A38 Ashtray Illumination
A39 Automatic Light Control Sensor
A42 Auto LSD SW
A48 Airbag Squib (Front Passenger Airbag Assembly)
A49 Airbag Squib (Front Passenger Airbag Assembly)
A22
B 1 Back Door Power Window Control SW
B 2 Blower Motor
B 3 Blower Motor Controller
B 4 Body ECU
B 5 Body ECU
B 6 Body ECU
B2
B3
A1
A1
36
4RUNNER (EM03M0U)
Page 38
Position of Parts in Instrument Panel
0
C9C8D2 D24 C10C12 C11 C13 C14 H11D3C5 G3
G
E4
E5
E6
E7
E8
F1
F9
C 5 Center Speaker
C 6 Cigarette Lighter
C 7 Cigarette Lighter Illumination
C 8 Combination Meter
C 9 Combination Meter
C10 Combination Meter
C 11 Combination Meter
C12 Combination SW
C13 Combination SW
C14 Combination SW
C15 Cup Holder Illumination
D 1 Data Link Connector 3
D 2 Daytime Running Light Relay
Turn Signal Flasher Relay
D 3 Defogger SW
Heater Control Panel
Passenger Seat Belt Warning Light
Security Indicator Light
D 4 Diff. Lock SW
D 5 Downhill Assist Control SW
D24 Diode (Rear Wiper)
I17 F11I18D4 D1 H19C6C7 C15 D5 H12
E 4 Engine Control Module
E 5 Engine Control Module
E 6 Engine Control Module
E 7 Engine Control Module
E 8 Engine Control Module
F 9 4WD Control ECU
F 10 4WD Control ECU
F 11 4WD Control SW
G 3 Glove Box Light
H 11 Hazard SW
H12 Height Control SW
H19 Height Control Mode Select SW
I 17 Ignition Key Cylinder Light
Transponder Key Amplifier
I 18 Ignition SW
4RUNNER (EM03M0U)
37
Page 39
G ELECTRICAL WIRING ROUTING
4
5
6
8
7
3
2
1
7
5
(*5)(*6)
Position of Parts in Instrument Panel
J11
J12
J13
J4
J14
J6
J7
J15
J5
J10 J8 J16J9 J17J18 J19J20 J21 J52 J51 J50 J49 J27J26
J28 J29 J30
* 5:1GR-FE
* 6:2UZ-FE
J3
J3
J3
J3
J3
J3
J4
J4
J3
J2
J 4 Junction Connector
J 5 Junction Connector
J 6 Junction Connector
J 7 Junction Connector
J 8 Junction Connector
J 9 Junction Connector
J 10 Junction Connector
J 11 Junction Connector
J 12 Junction Connector
J 13 Junction Connector
J 14 Junction Connector
J 15 Junction Connector
J 16 Junction Connector
J 17 Junction Connector
J 18 Junction Connector
J 19 Junction Connector
J 20 Junction Connector
J 21 Junction Connector
J 22 Junction Connector
J 23 Junction Connector
J23J22 J24
J 24 Junction Connector
J 25 Junction Connector
J 26 Junction Connector
J 27 Junction Connector
J 28 Junction Connector
J 29 Junction Connector
J 30 Junction Connector
J 31 Junction Connector
J 32 Junction Connector
J 33 Junction Connector
J 34 Junction Connector
J 35 Junction Connector
J 36 Junction Connector
J 37 Junction Connector
J 47 Junction Connector
J 48 Junction Connector
J 49 Junction Connector
J 50 Junction Connector
J 51 Junction Connector
J 52 Junction Connector
38
4RUNNER (EM03M0U)
Page 40
Position of Parts in Instrument Panel
6
4
1
(*9)
(*7)
(*7) (*10)R3(*9) (*7)(*8)
(*7) (*7)
(*8)
(*7)
G
* 7:w/ Navigation System
* 8:w/o Navigation System
* 9:6 Speaker
* 10:10 Speaker
w/o Navigation System
P4
S13
S14
S15
T6
R13 S30V5 R2 R1 R4 R26R12
R27
R10
R9
R11
R5
T8
T5
Z1
T1
V1
S3
K 3 Key Interlock Solenoid
Unlock Warning SW
M 2 Main SW
P 4 Parking Brake SW
P 5 Power Outlet (115V)
P 6 Power Outlet (Front)
R 1 Radio and Player
R 2 Radio and Player
R 3 Radio and Player
R 4 Radio and Player
R 5 Radio and Player
R 9 Radio and Player with Display
R10 Radio and Player with Display
R 11 Radio and Player with Display
R12 Radio and Player with Display
R13 Rheostat
R25 Roll Sensing of Curtain Shield Airbag Cutoff SW
R26 Radio and Player with Display
R27 Radio and Player with Display
S11K3T9 R25M2S12 Y1 S6 P6 S4 S5 P5
S 4 Seat Heater SW LH
S 5 Seat Heater SW RH
S 6 Shift Lock Control ECU
Transmission Control SW
S 11 Steering Sensor
S12 Stop Light SW
S13 Suspension Control ECU
S14 Suspension Control ECU
S15 Suspension Control ECU
S30 Seat Memory SW
S31 Stereo Jack Adapter
T 5 Theft Deterrent ECU
T 6 Towing Brake Controller
T 8 Transponder Key Computer
T 9 Turn Signal Flasher Relay
T 16 Tire Pressure Warning ECU
V 5 VSC Warning Buzzer
V14 Video Terminal
Y 1 Yaw Rate Sensor
Z 1 Option Connector (TVIP ECU)
4RUNNER (EM03M0U)
39
Page 41
G ELECTRICAL WIRING ROUTING
1
5
2
1
7
0
6
1
1
(*2)
(*1)
Position of Parts in Body
D23I19 D18 I20D13 D9 D19 C16 H18 L2 H18
* 1:w/ Rear Spoiler
* 2:w/o Rear Spoiler
C1
D1
D16
D17
J38
D8
D22
D12
A40 ABS Speed Sensor Rear LH
A41 ABS Speed Sensor Rear RH
B 7 Back Door Courtesy SW
Back Door Half Latch SW
Back Door Lock Detection SW
Back Door Lock Motor
B 8 Back Door ECU
B 9 Back Door ECU
B10 Back Door Opener SW
License Plate Light
B 11 Back Door Power Window Motor
C16 Curtain Shield Airbag Squib LH
C17 Curtain Shield Airbag Squib RH
D 7 Door Control Receiver
D 8 Door Courtesy Light Front LH
D 9 Door Courtesy Light Front RH
D10 Door Courtesy Light Rear LH
D 11 Door Courtesy Light Rear RH
D12 Door Courtesy SW Front LH
D13 Door Courtesy SW Front RH
D14 Door Courtesy SW Rear LH
D15 Door Courtesy SW Rear RH
D16 Door Key Lock and Unlock SW Front LH
Door Lock Detection SW Front LH
Door Lock Motor Front LH
D17 Door Lock Control SW Front LH
Power Window Master SW
D18 Door Lock Control SW Front RH
A40J41H15F14J39D14D20D10 H13H17 L1 H14 J40 B8L4 B9 B7
D19 Door Lock Detection SW Front RH
Door Lock Motor Front RH
D20 Door Lock Detection SW Rear LH
Door Lock Motor Rear LH
D21 Door Lock Detection SW Rear RH
Door Lock Motor Rear RH
D22 Door Speaker Front LH No.1
D23 Door Speaker Front RH No.1
F 14 Fuel Pump
Fuel Sender
H13 Height Control Compressor
H14 Height Control Motor
H15 Height Control Sensor Rear LH
H16 Height Control Sensor Rear RH
H17 Height Control Valve
H18 High Mounted Stop Light
I 19 Inner Mirror
I 20 Interior Light
J 38 Junction Connector
J 39 Junction Connector
J 40 Junction Connector
J 41 Junction Connector
J 42 Junction Connector
L 1 Low Pressure Tank Valve
L 2 Luggage Compartment Light
L 4 Canister Pump Module
D2
D1
J4
D7
H1
B1
A4
B1
40
4RUNNER (EM03M0U)
Page 42
S20
5
2
3
0
2
1
0
1
G
Position of Parts in Body
P17 V6 P7 T18 T13M5 S21M4 V7 R18 P9P13 P11 P15 T17 S19 W4
M3
P12
R24
P10
P14
S32
T12
P16
S16
M 3 Mirror Heater LH
Remote Control Mirror LH
M 4 Mirror Heater RH
Remote Control Mirror RH
M 5 Moon Roof Control ECU
P 7 Moon Roof Control SW
Personal Light
P 8 Power Outlet (Rear)
P 9 Power Window Control SW Front RH
P10 Power Window Control SW Rear LH
P 11 Power Window Control SW Rear RH
P12 Power Window Motor Front LH
P13 Power Window Motor Front RH
P14 Power Window Motor Rear LH
P15 Power Window Motor Rear RH
P16 Pretensioner LH
P17 Pretensioner RH
R14 Rear Combination Light LH
R15 Rear Combination Light RH
R16 Rear Door Speaker LH
R17 Rear Door Speaker RH
R18 Rear Seat Audio Controller
R19 Rear Speaker LH
R20 Rear Speaker RH
R21 Rear Window Defogger
R22 Rear Window Defogger
R23 Rear Wiper Motor
Rear Wiper Position SW
R24 Remote Control Mirror SW
S17 T14V9S18R16 S34S33 R14R19R17 S35 T15 R23
S16 Side Airbag Sensor Front LH
S17 Side Airbag Sensor Front RH
S18 Side Airbag Sensor Rear LH
S19 Side Airbag Sensor Rear RH
S20 Door Speaker Front LH No.2
S21 Door Speaker Front RH No.2
S22 Stereo Component Amplifier
S23 Stereo Component Amplifier
S32 Step Light Front LH
S33 Step Light Front RH
S34 Step Light Rear LH
S35 Step Light Rear RH
T 10 Tailgate Control SW
T 11 Television Camera
T 12 Tension Reducer Solenoid LH
T 13 Tension Reducer Solenoid RH
T 14 Towing Converter Relay
T 15 Trailer Socket
T 17 Tire Pressure Warning Antenna and Receiver
T 18 Telephone Microphone
V 6 Vanity Light LH
V 7 Vanity Light RH
V 9 Voltage Inverter
W 4 Woofer
R2
S2
S2
P8
R1
R2
R2
T1
T1
4RUNNER (EM03M0U)
41
Page 43
G ELECTRICAL WIRING ROUTING
(*2)
(*1)
Position of Parts in Seat
[Power Seat]
S24P24J53 P26 O3 J45 J46 O4 S27 P19
* 1:w/ Driving Position Memory
* 2:w/o Driving Position Memory
(*2)
J43
(*2)
J44
B12
P20
S26
P28
P27
B12 Buckle SW LH
Seat Position Airbag Sensor
B15 Buckle SW LH
B16 Buckle SW RH
B17 Buckle SW RH
J 43 Junction Connector
J 44 Junction Connector
J 45 Junction Connector
J 46 Junction Connector
J 53 Junction Connector
L 3 Lumbar Support Control SW (Driver’s Seat)
L 5 Lumbar Support Control Motor (Driver’s Seat)
O 3 Occupant Classification ECU
O 4 Occupant Classification ECU
O 5 Occupant Classification Sensor Front LH
O 6 Occupant Classification Sensor Front RH
O 7 Occupant Classification Sensor Rear LH
O 8 Occupant Classification Sensor Rear RH
O5L5P21B15P23L3P18
O7S25 B17 B16 O6 O8 P25
P18 Power Seat Control SW (Driver’s Seat)
P19 Power Seat Control SW (Front Passenger’s Seat)
P20 Power Seat Motor (Driver’s Seat Front Vertical Control)
P21 Power Seat Motor (Driver’s Seat Lifter Control)
P23 Power Seat Motor (Driver’s Seat Reclining Control)
P24 Power Seat Motor (Driver’s Seat Slide Control)
P25 Power Seat Motor
(Front Passenger’s Seat Reclining Control)
P26 Power Seat Motor
(Front Passenger’s Seat Slide Control)
P27 Position Control ECU and SW
P28 Position Control ECU and SW
S24 Seat Heater LH
S25 Seat Heater RH
S26 Side Airbag Squib LH
S27 Side Airbag Squib RH
42
4RUNNER (EM03M0U)
Page 44
[Manual Seat]
J43
J44
G
Position of Parts in Seat
B16 B17 J45 J46 S27
B12
S26
B12 Buckle SW LH
Seat Position Airbag Sensor
B15 Buckle SW LH
B16 Buckle SW RH
B17 Buckle SW RH
J 43 Junction Connector
J 44 Junction Connector
J 45 Junction Connector
J 46 Junction Connector
L 3 Lumbar Support Control SW (Driver’s Seat)
L 5 Lumbar Support Control Motor (Driver’s Seat)
O3O7O5L5B15L3 O6O4 O8
O 3 Occupant Classification ECU
O 4 Occupant Classification ECU
O 5 Occupant Classification Sensor Front LH
O 6 Occupant Classification Sensor Front RH
O 7 Occupant Classification Sensor Rear LH
O 8 Occupant Classification Sensor Rear RH
S26 Side Airbag Squib LH
S27 Side Airbag Squib RH
4RUNNER (EM03M0U)
43
Page 45
G ELECTRICAL WIRING ROUTING
: Location of Connector Joining Wire Harness and Wire Harness
: Location of Ground Points
[2UZ–FE]
ER
EC
EA
Engine Wire
EB1EB2
EE EQ
ED
EB
EA1
44
Engine Room Main Wire Engine No.2 Wire
4RUNNER (EM03M0U)
Page 46
: Location of Connector Joining Wire Harness and Wire Harness
: Location of Ground Points
[1GR–FE]
G
ED1
EC1
Differential Wire
EA
Engine Wire Sensor Wire
EE EF
EB
EA2
Engine Room Main Wire Engine No.2 Wire
4RUNNER (EM03M0U)
45
Page 47
G ELECTRICAL WIRING ROUTING
r
r
t
e
l
: Location of Connector Joining Wire Harness and Wire Harness
Roof Wire
Engine Room
Main Wire
IB2
IB1
IC1
IC3
IC4
IA1
IA2
IC5
Front Door
LH Wire
ID1
IE1
Relay Wire Engine Room
Radio Installation
Wiring Sub Assembly
Instrument Panel
No.2 Wire
IG1 IH1 II1
IC2 IF1
Floor No.2 Wire
Engine Wire
Main Wire
Instrument Pane
Wire Assembly
Cigarette Lighte
Wiring Assembly
Console Box
Wire (No.1)
Instrumen
Panel Wir
Front Doo
RH Wire
Floor Wire
IV1
: Location of Ground Points
IG
II
IK
46
IH IJ
4RUNNER (EM03M0U)
Page 48
1
r
: Location of Connector Joining Wire Harness and Wire Harness
G
Engine Room
Main Wire
Roof Wire
Radio
Installation
Wiring Sub
Assembly
Front Door
LH Wire
IT1
Instrument Panel
No.2 Wire
Relay WireFloor No.2 Wire
Instrument
Panel Wire
Engine Wire
IJ1 IL1
IK1
Cigarette Lighter
Wiring Assembly
Instrument Panel
Wire Assembly
IR1 IS1
Engine Room
Main Wire
Front Doo
RH Wire
Floor No.
Wire
Console Box
Wire
IU1
IM1
IM2
IN2
IN1
IP1
IP2
IO3
IO2
4RUNNER (EM03M0U)
47
Page 49
r
r
r
r
e
G ELECTRICAL WIRING ROUTING
: Location of Connector Joining Wire Harness and Wire Harness
: Location of Ground Points
Instrument
Panel Wire
BM
Front Door
LH Wire
BA1
BL
BL1
Step Rear
Floor LH Wire
Rear Door
No.2 Wire
Floor No.2
Wire
Roof Wire
BC1 BC2
Radio Installation
Wiring Sub Assembly
BN
Frame Wire
Skid Control
Sensor Wire
Front Door
BJ1
RH Wire
BF1BM1
Frame No.3
Wire
BD1
BD2
BB1
Rear Doo
No.1 Wire
Floor Wir
Back Doo
No.1 Wire
BP
Step Rea
Floor RH
Wire
BO
Back Doo
No.2 Wire
BE1
BH1
BG1
48
4RUNNER (EM03M0U)
Page 50
Memo
4RUNNER (EM03M0U)
49
Page 51
G ELECTRICAL WIRING ROUTING
: Location of Connector Joining Wire Harness and Wire Harness
[Power Seat]
Floor No.2 Wire
(*1)
BK1
Floor Wire
BI1
* 1:w/ Driving Position Memory
50
Seat No.2 Wire
4RUNNER (EM03M0U)
Seat No.1 Wire
Page 52
: Location of Connector Joining Wire Harness and Wire Harness
[Manual Seat]
G
Floor No.2 Wire
Floor Wire
BI1
Seat No.2 Wire Seat No.1 Wire
4RUNNER (EM03M0U)
51
Page 53
Power Source
10A MIR HEATER
B–R B–L
2
12
30A DEFOG
12
2
Y–G
2
Y–R
B–R
W–B
B
B–Y
R
2
2
2
2
2
2
DEFOG Relay
2
3
4
30A TOWING BRK
2
30A BATT CHG
2
50A A/PUMP
2
1
2
5
1
1
1
1
1
1
1
12
15A AC115V INV
12
R
50A AIR SUS
50A AM1
50A J/B
40A TOWING
10A STOP
4
4
GR
L–B
W–B
W–L
10A TAIL
12
22
L–Y
L–W
L
G–W
V
L–Y
BR–Y
1
1C
2
2
2
2
2
2
2
2
2
2
4
4
10A AIRSUS NO. 2
5
1
AIR SUS Relay
10A SECU/HORN
30A P P/SEAT
30A D P/SEAT
1
30A POWER
5
1
3
2
2
3
2
54
12
140A ALT
1
2
2
2
BB
Battery
2
12
5
1
15A FR FOG
7. 5A OBD
IG Relay
TAIL Relay
LG
2
O
2
25A SEAT HEATER
3
2
B–Y
2
W–B
2
Y–R
2
12
2
15A PWR OUTLET
2
LG
4RUNNER (EM03M0U)
Page 54
2
2
HEATER Relay
1
5
4
2
3
Y–R L
R
2
B–Y
2
W–B
2
7. 5A HEATER NO. 2
12
2
W–L
G–Y
2
I18
Ignition SW
3
ACC
2
AM1
IG1
4
W–G
L–Y
W–L
R
W
W–G
60A HEATER
2
2
7. 5A ALT–S
21
2
10A HORN
21
2
1
30A AM2
1
40A ABS MTR
1
30A ABS SOL
1
Short Pin
12
20A EFI
12
10A ETCS
12
20A DR/LCK
12
2
2
2
2
Y–B
2
Y
2
W
2
L
2
GR
2
G–W
2
R
7
AM2
10A HEAD(HI RH
12
IG2
ST2
6
8
)
2
B–R
G–B
W
L
R–W
B–R
B–Y
15A A/F HEATER
21
2
15A TRN–HAZ
21
2
30A TOWING
12
20A RADIO NO. 2
12
HEAD Relay
1
35
2
GR
2
W–L
2
2
W
2
R–B
R–B
4RUNNER (EM03M0U)
10A HEAD(HI LH
2
2
12
10A HEAD(LO RH
12
10A HEAD(LO LH
12
)
R–L
2
)
R–B
2
)
R–Y
2
55
Page 55
Power Source
7. 5A ACC
W–G
L–Y
B–R
G–B
W–G
1D
1C
1D
1D
5
2
6
3
10A CIG
15A IG1
10A ECU–IG
15A RR WSH
20A 4WD
30A FR WIP–WSH
10A IGN
7. 5A GAUGE
10A SRS
7. 5A STA NO. 2
10A DOME
21
R
2
20A RADIO NO. 1
W
L
W–G
L
2
2
2
12
10A ECU–B
21
EFI Relay
1
5
2
2
3
2
W–B
L–Y
2
W–R
2
10A EFI NO. 2
2
21
L–WB
2
56
4RUNNER (EM03M0U)
Page 56
: Parts Location
:
:
24
Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
Code See Page Code See Page Code See Page
I18 37
Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 22 Engine Room R/B (Engine Compartment Left)
4 23 Engine Room R/B No.4 (Engine Compartment Left)
Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1C
1D
4RUNNER (EM03M0U)
57
Page 57
Starting
78AM2 IG2
ST2
G–B
∗ 1 : 2UZ–FE
∗ 2 : 1GR–FE
∗ 3 : 1GR–FE Cold Area Spec.
∗ 4 : 1GR–FE Except Cold Area Spec.
7. 5A
STA
NO. 2
)
)
G–BL–Y
1D3
1K2
L–Y
(∗1)
IM26
(∗2)
IM24
I18
Ignition SW
R
R
B–Y
RRB
2
2
30A
AM2
1
2
22
51
STA Relay
32
2
2
Y–G
W–B
(∗1)
EA16
(∗2)
EA24
B–Y
B–Y
GG
J35
Junction
Connector
B–Y
G
B
B–Y
Combination Meter
IM111IC42
B–Y
P
N
P 1
Park/Neutral
Position SW
)
A
(
, J28
)
B
(
J27
4
A(∗1
B
Junction
Connector
B–Y
)
A
(∗2)
B
AA
BB
B–Y
5
AA(∗1
BB(∗2
58
Battery
B–L
(∗3)
B–R
(∗1)
W
(∗4)
1
B1A
)
)
∗2
∗1
(
(
S 2(A), (B), S 3(C
Starter
)
∗1
(
Y–G
C1
M
)
)
Y
∗2
(
B
W–B
EB
J 3
P
B8
STAR/
NSW
E 5(B), E 6(C
Engine Control Module
B–Y B–Y
C11 C12
STA STSW
)
Junction
Connector
4RUNNER (EM03M0U)
Page 58
: Parts Location
S2
S3
C
J3
P1
:
:
:
Engine No.2 Wire and Engine Room Main Wire (Under the Engine Room R/B)
47
Engine Wire and Instrument Panel Wire (Right Side of Blower Unit)
:
EB
Front Left Fender
Code See Page Code See Page Code See Page
E5 B 37 J27 B 38
E6 C 37 J28 A 38
I18 37 J35 38
33 (2UZ–FE)
35 (1GR–FE)
33 (2UZ–FE)
35 (1GR–FE)
A 35 (1GR–FE)
B 33 (2UZ–FE)
33 (2UZ–FE)
35 (1GR–FE)
Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 22 Engine Room R/B (Engine Compartment Left)
Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1D 24 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1K 25 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA1 44 (2UZ–FE)
EA2 45 (1GR–FE)
IC4 46 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IM1
IM2
Ground Points
Code See Page Ground Points Location
44 (2UZ–FE)
45 (1GR–FE)
4RUNNER (EM03M0U)
59
Page 59
H SYSTEM CIRCUITS
2007 4RUNNER
ELECTRICAL WIRING DIAGRAM
SYSTEM CIRCUITS
ABS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Active Height Control Suspension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 358
Audio System (w/ Navigation System) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Audio System (10 Speaker) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
Audio System (6 Speaker) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
Auto LSD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Automatic Glare–Resistant EC Mirror with Compass . . . . . . . . . . . . . . . . . . . 302
Automatic Light Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Back–Up Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Cigarette Lighter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
Combination Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
Cruise Control (1GR–FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
Cruise Control (2UZ–FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Downhill Assist Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Electric Modulated Air Suspension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Electric Tension Reducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306
Electronically Controlled Transmission and A/T Indicator (1GR–FE) . . . . 238
Electronically Controlled Transmission and A/T Indicator (2UZ–FE) . . . . . 230
Engine Control (1GR–FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Engine Control (2UZ–FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Engine Immobiliser System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Front Fog Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Front Wiper and Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Garage Door Opener . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Headlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Hill–Start Assist Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Ignition (1GR–FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Ignition (2UZ–FE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Interior Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Key Reminder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Light Auto Turn Off System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Mirror Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
Moon Roof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Multi Mode 4WD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Multiplex Communication System (BEAN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Multiplex Communication System (BEAN Bus) . . . . . . . . . . . . . . . . . . . . . . . . 100
Multiplex Communication System (CAN Bus) . . . . . . . . . . . . . . . . . . . . . . . . . 102
Navigation System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Parking Assist (Rear View Monitor) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Power Outlet (115V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
Power Outlet (12V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298
Power Seat (Driver’s Seat w/ Driving Position Memory) . . . . . . . . . . . . . . . . 308
Page
258
52
4RUNNER (EM03M0U)
Page 60
H
Page
Power Seat (Driver’s Seat w/o Driving Position Memory) . . . . . . . . . . . . . . .
Power Seat (Front Passenger’s Seat) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316
Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Power Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Rear Window Defogger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
Rear Wiper and Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Remote Control Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
Seat Belt Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Seat Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 318
Shift Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
SRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Stop Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Taillight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Theft Deterrent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Tire Pressure Warning System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
TRAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Trailer Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
Turn Signal and Hazard Warning Light (w/ Daytime Running Light) . . . . . 146
Turn Signal and Hazard Warning Light (w/o Daytime Running Light) . . . . 150
VSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Wireless Door Lock Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
312
4RUNNER (EM03M0U)
53
Page 61
Ignition for 2UZ–FE
76AM2 IG2
I18
Ignition SW
R RB
ST2
B–R
EA17
B–Y
EB11
B–R
B–R
B–R
W–B
B–R
1
W–B
B–R
W–B
B–R
W–B
41414
B–RB–R
B–R
B–RB–R
B–R
W–BW–B
W–B
41
I 1
Ignition Coil and
2
2
30A
AM2
1
2
Battery
Igniter No. 1
LG
LG
8
IGT1
R–Y
R–Y
24 15
IGF1 IGT3
I 2
Ignition Coil and
Igniter No. 2
LG–B
LG–B
IGT2
R–W
R–W
25
IGF2
E 4
Engine Control Module
R–YR–Y
R–W
I 3
Ignition Coil and
Igniter No. 3
L–W
L–W
11
232323
R–W
R–Y
R–W
I 4
Ignition Coil and
Igniter No. 4
L–Y
L–Y
10
IGT4
23
R–Y
R–Y
R–W
60
4RUNNER (EM03M0U)
Page 62
B–R
B–R B–RB–R
B–R
R–Y
R–W
W–B
41
23
R–Y
B–R
W–B
B–R
I 8
Ignition Coil and
Igniter No. 8
G–B
W–B
41
23
R–W
W–B
B–R
)
2
Ignition No. 2
Noise Filter
(
N 2
1
)
2
Ignition No. 1
Noise Filter
(
N 1
1
B–R
W–B
41
23
R–Y
W–B
I 7
R–Y
R–W
Ignition Coil and
B–R
Igniter No. 7
G–W
W–BW–B
B–R
I 5
Ignition Coil and
Igniter No. 5
B–L
W–B
41
23
R–W
R–Y
R–W
B–R
I 6
Ignition Coil and
Igniter No. 6
G
13
IGT5
B–L
G
12 14
IGT6
E 4
Engine Control Module
G–W
IGT7
G–B
9
IGT8
W–B
ED
W–B
ER
W–B B–R
B
EC
61
4RUNNER (EM03M0U)
Page 63
Ignition for 2UZ–FE
:
:
:
: Parts Location
Code See Page Code See Page Code See Page
E4 37 I4 33 (2UZ–FE) I8 33 (2UZ–FE)
I1 33 (2UZ–FE) I5 33 (2UZ–FE) I18 37
I2 33 (2UZ–FE) I6 33 (2UZ–FE) N1 33 (2UZ–FE)
I3 33 (2UZ–FE) I7 33 (2UZ–FE) N2 33 (2UZ–FE)
Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 22 Engine Room R/B (Engine Compartment Left)
Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA1 44 (2UZ–FE) Engine No.2 Wire and Engine Room Main Wire (Under the Engine Room R/B)
EB1 44 (2UZ–FE) Engine No.2 Wire and Engine Wire (Near the Starter)
Ground Points
Code See Page Ground Points Location
EC 44 (2UZ–FE) Right Bank Cylinder Head
ED 44 (2UZ–FE) Left Bank Cylinder Head
ER 44 (2UZ–FE) Rear Side of Front Right Fender
62
4RUNNER (EM03M0U)
Page 64
Memo
4RUNNER (EM03M0U)
63
Page 65
Ignition for 1GR–FE
76AM2 IG2
I18
Ignition SW
R RB
ST2
B–R
1D6
41H
B–R
13 IM1
B–R
B–RB–R
W–B
B–R
1
W–B
B–R
W–B
B–R
W–B
41414
B–R
1
B–R
W–BW–B
W–B
4
I 1
Ignition Coil and
2
2
30A
AM2
1
2
Battery
Igniter No. 1
Y–R
Y–R
8 11
IGT1
W–R
W–R
IGF1 IGT3
I 2
Ignition Coil and
Igniter No. 2
P–L
P–L
924
IGT2
W–R
E 4
Engine Control Module
I 3
Ignition Coil and
Igniter No. 3
LG
LG
10
232323
W–R
I 4
Ignition Coil and
Igniter No. 4
LG–B
LG–B
IGT4
23
W–R
W–RW–RW–RW–R
64
4RUNNER (EM03M0U)
Page 66
B–R
B–R
W–BW–B
B–R
I 5
Ignition Coil and
Igniter No. 5
GR
W–R W–R
GR
12 13
IGT5
W–B
41
23
W–R
B–R
I 6
Ignition Coil and
Igniter No. 6
L
L
IGT6
W–B
41
23
W–R
W–B
W–B
B–R
)
2
Ignition No. 1
Noise Filter
(
N 1
1
W–B
E 4
Engine Control Module
EF
65
4RUNNER (EM03M0U)
Page 67
Ignition for 1GR–FE
:
:
:
:
: Parts Location
Code See Page Code See Page Code See Page
E4 37 I3 35 (1GR–FE) I6 35 (1GR–FE)
I1 35 (1GR–FE) I4 35 (1GR–FE) I18 37
I2 35 (1GR–FE) I5 35 (1GR–FE) N1 35 (1GR–FE)
Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 22 Engine Room R/B (Engine Compartment Left)
Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1D 24 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1H 25 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
IM1 47 Engine Wire and Instrument Panel Wire (Right Side of Blower Unit)
Ground Points
Code See Page Ground Points Location
EF 45 (1GR–FE) Rear Side of Left Bank Cylinder Block
66
4RUNNER (EM03M0U)
Page 68
Memo
4RUNNER (EM03M0U)
67
Page 69
Charging
ACC
W–L
W
2
W–L
2
2
50A AM1
1
2
140A ALT
1
2
B
2
R
R
22
2
AM1
7
I18
Ignition SW
∗ 1 : 2UZ–FE
∗ 2 : 1GR–FE
W
22
IG1
IG2
ST2
L–Y
4
B–R
6AM2
5EA1 EA11
1EA2
B 4
Body ECU
14
)
B
(
, J19
)
A
(
J18
Junction
Connector
L
BE
AAAA
IC46
GR GR GR
EA23
(∗1)
(∗2)
B–R
GR
)
C
(
, C10
)
A
(
C 8
1D6
7. 5A
GAUGE
1G4
R–L
C15
Charge
Combination Meter
A16
GR
BG
)
B
(
, J 9
)
A
(
AG
Junction
Connector
J 8
1C2
15A
IG1
1E20
Y–RY–RY–R L–Y
E
Junction
Connector
E
D
J 1 J 1
Junction
Connector
D
(∗1)
EA12
(∗2)
EA22
68
Y–R
30A AM2
1
7. 5A ALT–S
1
2
B
Battery
W
LIG B
S
G 1(A), G 2(B
Generator
GR
Y–R
B4B2B1A1
IC Regulator
)
W
4RUNNER (EM03M0U)
Page 70
: Parts Location
G2
B
G1
A
J1
:
:
24
Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
24
Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
:
Engine No.2 Wire and Engine Room Main Wire (Under the Engine Room R/B)
Code See Page Code See Page Code See Page
B4 36
C8 A 37
C10 C 37 I18 37 J18 A 38
32 (2UZ–FE)
34 (1GR–FE)
32 (2UZ–FE) J8 A 38
34 (1GR–FE) J9 B 38
33 (2UZ–FE) J19 B 38
35 (1GR–FE)
Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 22 Engine Room R/B (Engine Compartment Left)
Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1C
1D
1E
1G 25 Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA1 44 (2UZ–FE)
EA2 45 (1GR–FE)
IC4 46 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
4RUNNER (EM03M0U)
69
Page 71
Engine Control for 2UZ–FE
)
ACC
BAT
B
(
)(
BAT
)(
7. 5A
ACC
1K8
ACC
AM1
76AM2
I18
Ignition SW
RR
2
2
IG1
IG2
ST2
P
F3E
3EF
P
38 IC4
P
22
32
ACC CUT Relay
41
22
GR
B–R
L
W–G
15A
A/F HEATER
2
2
L
W–G
B–R
22 22
2
15
A/F HEATER Relay
23
2
2
W
W–B
15
EFI Relay
23
22 22
2
20A
EFI
2
2
L
L
B
B
B
B
BL–W
2
1
B
51
C/OPN Relay
32
B–W
B
B–R
W–G
L
B–O
B–W
GR–B
GR–B
70
IC411 IC433
30A AM2
1
2
B
Battery
IC49
W
IM14
AB
J 2(A), J 3(B
Junction
Connector
W–B
A
BA
L–W
)
BB
W–B
EB
2
A
A
IC317IB21
2
L–W
10A EFI NO. 2
J 4
Junction
Connector
B
GR–B
GR–B
B
L–W
L–W
W
W–G
4RUNNER (EM03M0U)
Page 72
BB
B–R
W–G
L
B–O
B–W
FUEL PUMP Relay
B–W
22
23
4
15
22 2
B–Y
G–R
IC45
G–R
IM219
G–R
B–R
B–R
2
F 8
Fuel Pump
Resistor
1
J 4
)
B
(
, J41
)
A
(
J40
Junction
B–R
Junction
C
Connector
C
B–O B–O
2IB1
B–R
4
M
5
W–B
BABA
AA
Connector
W–B
B–O
F14
23 1E
Fuel Pump
10A
IGN
)
A
(
J 8
W–B
6
11 1J
Junction
Connector
B–R
1D
B–O B–O
B–R B–R
L
IC412
L
IGSW
E9
B–O
BB
)
B
(
AB
, J32
)
A
(
AB
BA
J31
Junction
Connector
B–O
8
EA1
P 1
Park/Neutral
Position SW
W–G
IC435
W–G
8
E3E
MRELBATT
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E
Engine Control Module
FCFPR
10 E30 C
G–R
GR–B
)
B
(
, J32
)
A
(
CA
J31
Junction Connector
+B
BB
P
N
E1
4
P
B8
STAR/
NSW
2E
ABAB
4
EB1
+B2
B
B–R
5
STA Relay
B–Y
A
A
B–Y B–Y
STA
A
J28
Junction
Connector
C11
)
17 E
16
ACCR
W–G
IC3
W–G
AIV2
A26
L
)
2
11
Air Switching Valve Bank 1
(
VSV
V12
L–W
V13
AIV1
)
2
Air Switching Valve Bank 2
(
VSV
A27
P
L–W
GR–B
B
L–W
L–W
W
W–G
L–W
L–W
L–W
W
L–W
BLBO
71
4RUNNER (EM03M0U)
Page 73
Engine Control for 2UZ–FE
BB
6E
R–L
Combination Meter
VPMPMPMP
5E
B–RB–RB–RB–RB–R
I12
B–R
I13
Injector No. 4
2
Y
5C
#40
Injector No. 5
)
B–R
11
I 9
Injector No. 1
2
R–LR–L
A
A
Junction
J26
A
#10
PPMP
22 E
B–R
1
I10
Injector No. 2
2
L
Connector
3C2
#20
L 4
Canister Pump Module
B–R
1
I11
Injector No. 3
2
W
4C
#30
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E
Engine Control Module
B–R
1
2
G
C
6C
#50
B–R B–R
1
I14
Injector No. 6
2
RB–R
C
7
#60
1
Injector No. 7
I15
2
WB–R
A
3
#70
32
AIP
I16
A
1
Injector No. 8
2
BR B–R
A
2
#80
L–W
L–W
W
L–W
BR
43 IE1
BR
22 IM2
Canister
Pressure Sensor
42 IE1
4296183
L–RL–R
7IM2
1
BR
1EB2
W–L W–L
2
AIP
3EB24EB2
VCE2
3
L–R
A45
L–R
BR
L–W
L–W
L–R
W
BR
Air Pressure Sensor
O
R
R–G
Vent Valve
R
17 IE1
R
R–G
11 IE1
R–G
L–W
O
28 IE1
O
Leak
Detection Pump
M
9IE1
16 IM2
W–B
W–B
W–B
72
ED
4RUNNER (EM03M0U)
Page 74
B B
∗ 1 : Shielded
(ST)
7. 5A
STA
NO. 2
A24
Accel Position Sensor
21K
2
1
Camshaft Timing Oil
Control Valve LH
C 2
P
LG
2
VPA1 VPA2 VCP1 VCP2 EP1 EP2
1
Camshaft Timing Oil
Control Valve RH
C 3
6IM2
R–W
Y–R
L–Y L–Y
634152
W–R
W–R
R–B
R–B
B–Y
B–Y
W–L
W–L
LG–B
IC429 IC389IC326 IC431 IC434 IC4
LG–B
V–W
V–W
17 C
OC1+ OC1– OC2+
L–R
BR
L–W
16 C
L–R
L–R
L–R
15 C
RL–R
T 2
Throttle Control Motor
Throttle Position Sensor
14 C
VTA1VC
20 A23 A
Y
12 C
VTA2
R–B
STSW
)
∗1
(
M+
5A
R
BR
M–
4A
12465
M–M+VTA2VTA1VC
3
OC2–
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E
Engine Control Module
19 A
G
E2
W
BR
VPA
)
GE01
17 A
BR BR
19 EE18
VPA2
21 A 30 A
Engine Coolant
Temp. Sensor
E 2
L–W
L–W
VCPA
THW
R–L
2
1
BR
C
E27
)
B
(
M 1
E26
VCP2
VG
W–R
B3B2B4
VG E2G THA
E2 +B
Mass Air
Flow Meter
B5B1
BR
D
E20
EPAEEPA2
E2G
29 A
B–W
J28
Junction
Connector
21
THA
22 A
Y–B
L–W
BR
L–R
C
L–W
L–R
W W
BR
12
IM1
L–W
D
C
4RUNNER (EM03M0U)
73
Page 75
Engine Control for 2UZ–FE
BB
∗ 1 : Shielded
R–Y R–Y
R–W
R–Y
2
Ignition Coil and
Igniter No. 1
I 1
3 33333
R–Y
24
A
IGF1
PRG
34 A
Y–R
LG
8A
IGT1
33
ACIS
A
R
E2
28 A
BR
R–W
2
Ignition Coil and
Igniter No. 2
I 2
LG–B
15 A
IGT2
)
∗1
(
I 3
A2A+ HA2A
23 B
P
R–W
222
Ignition Coil and
Igniter No. 3
L–W
11 A
IGT3
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E
Engine Control Module
A2A–
31 B
L
I 4
B–W
Ignition Coil and
)
(
Igniter No. 4
∗1
10 A
IGT4
R–Y
L–Y
A1A+
22 B
Ignition Coil and
Igniter No. 5
I 5
13 A
)
A1A–
30 B
Y
BR
R–W
B–L
IGT5
R–W
HA1A
B2B1
R–L
R–W
R–Y
2
Ignition Coil and
Igniter No. 6
I 6
G
12 A
IGT6
OX2B
33 B
)
∗1
(
5B
W
Ignition Coil and
I 7
HT2B
Igniter No. 7
R–Y
2
3
G–W
14 A
IGT7
BR
L–R
W
)
B
(
V 2
)
Purge
(
VSV
C
B1B2
)
B
(
V 1
B2B1
L–W
)
ACIS
(
VSV
DC
D
L–W
BR
J28
Junction
Connector
L–W
434313
AF+ AF– HTOXAF–AF+
W
BR BR
J26
C
Junction
Connector
W
CC
)
Bank 2 Sensor 1
Air Fuel Ratio Sensor
(
A13
W
W–B
1212
J28
Junction
Connector
E
EE
)
Bank 1 Sensor 1
Air Fuel Ratio Sensor
(
A12
L–W
E
E
E
E
)
E1+BHT+BHT+B
42
BR P
Bank 2 Sensor 2
Heated Oxygen Sensor
(
H 8
BR
(∗1)
W–B
L–R
W–B
W–B
W–B
L–W
74
4RUNNER (EM03M0U)
Page 76
B
(
BAT
)
BAT
)(
B
R–W
10A
ETCS
A32
Airbag Sensor
Assembly
R–W
2
Ignition Coil and
Igniter No. 8
I 8
3
G–B
9A
IGT8
OX1B
A18
R–W
25 A
IGF2
HT1B
A1
GSW2
23
32 D
F/PS
L
IL12
L
G2+3G2–
19
C
T 8
Transponder Key
Computer
EFIO
6
W–R
16 D
IMI
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E
Engine Control Module
C
29
EFII
7
L–R
D15
IMO
C25
2
2
GRGR
IC413
7E
+BM
S12
J 4
Junction
)
VV1–VV1+
24
C
VV2+
C18
VV2–
C28
Stop Light SW
Connector
10A
STOP
2
2
G–W
2
1
G–Y
B
B
G–Y
G–Y
3CE
AH
)
B
3CE
G–Y
IC315
NE–
(
, J32
)
A
(
BE
J31
Junction
Connector
G–Y
15 E
STP
NE+
C21
C20
BR
(∗1)
W–B
L–R
W–B
W–B
W–B
)
∗1
(
B
31
OX HT
E1 +B
42
BR
G–Y
H 6
L–W
)
∗1
W
)
12
Bank 1 Sensor 2
Heated Oxygen Sensor
(
L–R B
(
)
Bank 1
(
)
B
(
Camshaft Position
Sensor
C 1
V 3
VVT Sensor
L
Y
B1B1B2
B2B2B1
)
R
∗1
(
)
Bank 2
(
)
B
(
V 4
VVT Sensor
G
W–B
)
∗1
(
)
B
(
C 4
Crankshaft
Position Sensor
L
Y
W–B
L–W
ED
75
4RUNNER (EM03M0U)
Page 77
Engine Control for 2UZ–FE
B B
)
BAT
50A
J/B
2
L–W
1C1
15
TAIL Relay
23
10A
TAIL
51L
G
B
B
G
3DD
3DD
J16
Junction
Connector
DA
G
G
ELS1
D
ELS2
IB
13 D
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E
Engine Control Module
∗ 1 : Shielded
)
B
(
, J32
)
A
(
J31
Junction
B
Y–G
D12
)
Y–G
Connector
(
)(
BAT
2
1
30A
DEFOG
2
2
Y–GY–G
18IAIC4
)
B
(
EB
, J23
)
A
(
Junction
Connector
J22
DA
140A
ALT
22
51
DEFOG
Relay
32
2
B–R
W–B
KNK2 EKNK
21 B
)
∗1
(
2EB1
)
∗1
(
EKN2
B20
WW
B
BR
EB13EB1 7 EB1EB168
B
B2
B1
BR
)
)
B
(
Bank 2
Knock Sensor
(
K 2
KNK1
B29
)
G
∗1
(
)
G
∗1
(
1
2
28 B
K 1
THWO
)
B
(
, J32
R
)
A
(
J31
Junction
Connector
L–B L–B
3DC
3DC
R
)
Bank 1
Knock Sensor
(
L–B
A16(A), A17(B
A/C Control Assembly
ACT
D14
BH
AE
A7A18 B7
D25
BR–W
IK12IK11
BR–W
ACTTW I
)
AC1
D24
GR–G
GR–G
AC1
4WD
C8
W–B W–B
)(
4WD
(
)
4WD
C14B6A7A
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
W–B
E05E04E03E02E01
6B7B
W–B
W–B
E1
76
4RUNNER (EM03M0U)
EE
EE
Page 78
B
F 9
4WD Control ECU
(
BAT
)
50A
A/PUMP
)
B
(
, J30
)
A
(
J29
24
Junction
Connector
13 C
ME01
3B
BRBR
L4
W–L
BH
AF
W–L
IM25
W–L
L4
2
2
)
4WD
(
P–L
EA
)
B
)
4WD
(
)
4WD
(
LG
33 D34 D
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E
Engine Control Module
EC
9C
W–BW–B
(
, J30
)
A
(
AB
Junction
Connector
J29
L
CANHCANL
P–L
TC
E23
25 E
G
AIRP
Y
AIRV
V
13 E
AIDI
)
EOM
D35
W–B
TACHSPD
8D D30
D1
V–R
B–W
W
R–B
V
Y
IC3 IC31410
V
2B
DI
)
B
(
, A44
)
A
(
2A
A43
Air Injection Control Driver
G
Y
3B
SIV
G
IC34
G
4B
SIP
6B
L
B
5B
+B
1
EVVVP
B1
BRBR
R
A
BATT
LG
L
P–L
ED
IM21
AB
)
B
(
, J34
)
A
(
Junction
Connector
J33
AA
AA
W–B
A
J37
Junction
Connector
IK
3EA1
2
Air Pump
A46
1
G
M
W–B
W–B
EQ
4EA1
1
Air Switching Valve
A47
2
L
W–B
IN14E4
BR
R–B
B–W
V–R
4RUNNER (EM03M0U)
77
Page 79
Engine Control for 2UZ–FE
(
)
BAT
7. 5A
OBD
2
2
LG
L
P–L
3C
3CCC
O
IC432
Y 1
Yaw Rate Sensor
J18
Junction
D 1
Data Link
Connector 3
H
Connector
H
P–L P–L
13 16
TC BAT
BR
AAAA
CANH CANL
3
Connector
W
C1
B
3
S11
Steering Sensor
)
B
(
, J36
)
A
(
J35
14
CANL
Junction
Connector
V
OBR
SG CG
54
BE
BR
IM29
P
6
CANH
W–B
AE
AE
)
A
(
Junction
J22
2
R
B2B1
C2
Y
11
P
D1
A1
B
IC211
B
11
CANH CANLCANLCANH
V
D2
A2
W
IC222
W
25
SP1
12
L
E1
J47(A), J48(B), J49(C),
J50(D), J51(E), J52(F
Junction
Connector
S28
Skid Control ECU
with Actuator
LG
E2
ST–Plug
)
F1
W–B
78
BR
R–B
B–W
V–R
BR
W–B
A
J 5
Junction
Connector
IGED
4RUNNER (EM03M0U)
GR–R
GR–R
R–B
B–W
V–R
IH
Page 80
(
BAT
)(IG)
)
C
(
, C10
)
B
(
, C 9
)
A
(
C 8
7. 5A
GAUGE
1G4
R–L
C15 C16
Malfunction
Indicator Lamp
Combination Meter
4B
A76BB5
)
B
(
, J 9
)
A
(
J 8
Junction
10A
DOME
R
AH
BF
Connector
R
D
J 7
Junction
Connector
D
R
Speedometer
2
2
R
IC410
Tachometer
C13
GR–R
R–B
B–W
V–R
)
B
(
, J30
)
A
(
Junction Connector
J29
BR
IM17
BR
R–B
GR–R
7IC2
GR–R
B–W
)
BH
B
(
, J 9
)
A
(
J 8
Junction
AF
B–W
AG
)
B
(
, J32
)
A
(
BF
Junction Connector
J31
B–W
V–R
1G1
1K11
Connector
3DB
3DB
V–R V–R
AG
BG
V–R
4RUNNER (EM03M0U)
ED
79
Page 81
Engine Control for 2UZ–FE
System Outline
The engine control system utilizes a microcomputer and maintains overall control of the engine, transmission etc. An outline
of the engine control is given 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 which
varies according to the engine coolant temp. The engine coolant temp. is input into TERMINAL THW of the engine
control module as a control signal.
(2) Intake air temp. signal circuit
The intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp., which is input as a
control signal to TERMINAL THA of the engine control module.
(3) Oxygen sensor signal circuit
The oxygen density in the exhaust emission is detected and is input as a control signal from the heated oxygen sensors
to TERMINALS OX1B and OX2B of the engine control module.
(4) RPM signal circuit
The camshaft position is detected by the camshaft position sensor and is input into TERMINAL G2+ of the engine
control module as a control signal. Also, the engine RPM is detected by the crankshaft position sensor and the signal is
input into TERMINAL NE+ of the engine control module.
(5) Throttle position sensor signal circuit
The throttle position sensor detects the throttle valve opening angle as a control signal, which is input into TERMINALS
VTA1 and VTA2 of the engine control module.
(6) Vehicle speed circuit
The vehicle speed sensor detects the vehicle speed, and the signal is input into TERMINAL SPD of the engine control
module via the combination meter, from TERMINAL SP1 of the skid control ECU with actuator.
(7) Battery signal circuit
Voltage is constantly applied to TERMINAL BATT of the engine control module. When the ignition SW is turned on, the
voltage for engine control module start up power supply is applied through the EFI relay, to TERMINALS +B and +B2 of
the engine control module. The current from the IGN fuse flows to TERMINAL IGSW of the engine control module, and
voltage is constantly applied to TERMINAL +BM.
(8) Intake air volume signal circuit
The intake air volume is detected by the mass air flow meter, and is input as a control signal to TERMINAL VG of the
engine control module.
(9) Stop light SW signal circuit
The stop light SW is used to detect whether the vehicle is braking or not, and the signal is input into TERMINAL STP of
the engine control module as a control signal.
(10)Starter signal circuit
To confirm whether the engine is cranking, the voltage applied to the starter motor when the engine is cranking is
detected, and is input into TERMINAL STA of the engine control module as a control signal.
(11) Engine knock signal circuit
Engine knocking is detected by the knock sensors, and is input into TERMINALS KNK1 and KNK2 of the engine control
module as a control signal.
(12)A/C SW signal system
The operating voltage of the A/C magnetic clutch is detected and input in the form of a control signal to TERMINAL AC1
of the engine control module.
(13)Air fuel ratio signal system
The air fuel ratio is detected by air fuel ratio sensor and input as a control signal into TERMINALS A1A+ and A2A+ of
engine control module.
80
4RUNNER (EM03M0U)
Page 82
2. Control System
∗ SFI system
The SFI system monitors the engine condition through the signals input from each sensors to the engine control module.
The control signal is sent to the engine control module TERMINALS #10, #20, #30, #40, #50, #60, #70 and #80 to operate
the injector (Fuel injection). The SFI system controls the fuel injection by the engine control module in response to the
driving conditions.
∗ ESA system
The ESA system monitors the engine condition through the signals input from each sensors to the engine control module.
The best ignition timing is decided according to this data and the data memorized in the engine control module. The
control signal is output to TERMINALS IGT1, IGT2, IGT3, IGT4, IGT5, IGT6, IGT7 and IGT8, and these signals control the
igniter to provide the best ignition timing.
∗ Heated oxygen sensor heater control system
The heated oxygen sensor heater control system turns the heater on when the intake air volume is low (Temp. of exhaust
emission is low), and warms up the heated oxygen sensors to improve their detection performance. The engine control
module evaluates the signals from each sensors, and outputs current to TERMINAL HT1B or HT2B to control the heater.
∗ Air fuel ratio sensor heater control system
The air fuel ratio sensor heater control system turns the heater on when the intake air volume is low (Temp. of exhaust
emission is low), and warms up the air fuel ratio sensor to improve detection performance of the sensor.
The engine control module evaluates the signals from each sensor, current is output to TERMINALS HA1A and HA2A,
controlling the heater.
∗ Fuel pump control system
The engine control module supplies current to TERMINAL FPR, and controls the operation speed of the fuel pump with
the FUEL PUMP relay.
∗ ACIS
The ACIS includes a valve in the bulkhead separating the surge tank into two parts. This valve is opened and closed in
accordance with the driving conditions to control the intake manifold length in two stages, for increased engine output in all
ranges from low to high speeds.
∗ ETCS–i
The ETCS–i controls the engine output at its optimal level in accordance with the opening of the accelerator pedal, under
all driving conditions.
∗ Engine start control system
The engine control module allows power to be supplied from the TERMINAL STAR/NSW to the STA relay via park/neutral
position SW until complete combustion is confirmed by engine RPM after the detection of ignition SW ST signal by the
TERMINAL STSW.
With this arrangement, engine can be started without holding the ignition key in the ST position. At the same time, the
TERMINAL ACCR is controlled so that the engine control module turns off ACC CUT relay, shutting off power to the
accessories.
∗ VVT–i
Controls the intake camshaft to an optimal valve timing in accordance with the engine condition.
∗ Air Injection System
It is the system to improve exhaust control performance by activating catalyst at early stage, which is realized when air is
pressed and sent into the exhaust pipe forcibly by the air injection pump at starting engine in cold condition.
3. Diagnosis System
When there is a malfunction in the engine control module signal system, the malfunctioning system is recorded in the
memory. The malfunctioning system can be found by reading the code displayed on the malfunction indicator lamp.
4. Fail–Safe System
When a malfunction has occurred in any system, there is a possibility of causing engine trouble due to continued control
based on that system. In that case, the fail–safe system either controls the system using the data (Standard values)
recorded in the engine control module memory, or else stops the engine.
4RUNNER (EM03M0U)
81
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Engine Control for 2UZ–FE
:
:
24
Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
24
Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
25
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
28
Instrument Panel Wire and Center J/B (Instrument Panel Brace RH)
28
Instrument Panel Wire and Center J/B (Instrument Panel Brace RH)
: Parts Location
Code See Page Code See Page Code See Page
A12 32 (2UZ–FE) I3 33 (2UZ–FE) J33 A 38
A13 32 (2UZ–FE) I4 33 (2UZ–FE) J34 B 38
A16 A 36 I5 33 (2UZ–FE) J35 A 38
A17 B 36 I6 33 (2UZ–FE) J36 B 38
A24 36 I7 33 (2UZ–FE) J37 38
A32 36 I8 33 (2UZ–FE) J40 A 40
A43 A 32 (2UZ–FE) I9 33 (2UZ–FE) J41 B 40
A44 B 32 (2UZ–FE) I10 33 (2UZ–FE) J47 A 38
A45 32 (2UZ–FE) I11 33 (2UZ–FE) J48 B 38
A46 32 (2UZ–FE) I12 33 (2UZ–FE) J49 C 38
A47 32 (2UZ–FE) I13 33 (2UZ–FE) J50 D 38
C1 32 (2UZ–FE) I14 33 (2UZ–FE) J51 E 38
C2 32 (2UZ–FE) I15 33 (2UZ–FE) J52 F 38
C3 32 (2UZ–FE) I16 33 (2UZ–FE) K1 33 (2UZ–FE)
C4 B 32 (2UZ–FE) I18 37 K2 B 33 (2UZ–FE)
C8 A 37 J2 A 33 (2UZ–FE) L4 40
C9 B 37 J3 B 33 (2UZ–FE) M1 B 33 (2UZ–FE)
C10 C 37 J4 38 P1 33 (2UZ–FE)
D1 37 J5 38 S11 39
E2 32 (2UZ–FE) J7 38 S12 39
E4 A 37 J8 A 38 S28 33 (2UZ–FE)
E5 B 37 J9 B 38 T2 33 (2UZ–FE)
E6 C 37 J16 38 T8 39
E7 D 37 J18 38 V1 B 33 (2UZ–FE)
E8 E 37 J22 A 38 V2 B 33 (2UZ–FE)
F8 32 (2UZ–FE) J23 B 38 V3 B 33 (2UZ–FE)
F9 37 J26 38 V4 B 33 (2UZ–FE)
F14 40 J28 38 V12 33 (2UZ–FE)
H6 32 (2UZ–FE) J29 A 38 V13 33 (2UZ–FE)
H8 32 (2UZ–FE) J30 B 38 Y1 39
I1 33 (2UZ–FE) J31 A 38
I2 33 (2UZ–FE) J32 B 38
Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 22 Engine Room R/B (Engine Compartment Left)
Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1C
1D
1E
1G
1J
1K
1L
3C
3D
3E
82
4RUNNER (EM03M0U)
Page 84
:
Connector Joining Wire Harness and Wire Harness
44 (2UZ–FE)
Engine No.2 Wire and Engine Wire (Near the Starter)
46
Floor No.2 Wire and Engine Room Main Wire (Left Kick Panel)
46
Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
46
Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
47
Engine Wire and Instrument Panel Wire (Right Side of Blower Unit)
:
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EA1 44 (2UZ–FE) Engine No.2 Wire and Engine Room Main Wire (Under the Engine Room R/B)
EB1
EB2
IB1
IB2
IC2
IC3
IC4
IE1 46 Instrument Panel Wire and Floor No.2 Wire (Left Kick Panel)
IK1 47 Instrument Panel Wire and Instrument Panel Wire (Left Upper Side of the Glove Box)
IL1 47 Instrument Panel Wire and Instrument Panel Wire (Right Upper Side of the Glove Box)
IM1
IM2
IN1 47 Instrument Panel Wire and Engine Room Main Wire (Right Kick Panel)
Ground Points
Code See Page Ground Points Location
EB 44 (2UZ–FE) Front Left Fender
ED 44 (2UZ–FE) Left Bank Cylinder Head
EE 44 (2UZ–FE) Rear Side of Cylinder Block
EQ 44 (2UZ–FE) Near the Starter
IG 46 Left Kick Panel
IH 46 Instrument Panel Brace LH
IK 46 Right Kick Panel
BL 48 Floor Seat Crossmember LH
BO 48 Rear Pillar LH
4RUNNER (EM03M0U)
83
Page 85
Engine Control for 1GR–FE
)
ACC
BAT
(
)(
BAT
)(
7. 5A
ACC
1K8
ACC
AM1
76AM2
I18
Ignition SW
RR
2
2
IG1
IG2
ST2
P
F3E
3EF
P
38 IC4
P
22
32
ACC CUT Relay
41
22
GR
B–R
L
W–G
15A
A/F HEATER
2
2
L
W–G
B–R
22 22
2
15
A/F HEATER Relay
23
2
2
W
W–B
15
EFI Relay
23
22 22
2
20A
EFI
2
2
L
L
B
B
B
BL–W
2
1
B
51
C/OPN Relay
32
B–W
B
B–R
W–G
L
B–O
B–W
GR–B
GR–B
84
IC411 IC433
30A AM2
1
2
B
Battery
IC49
W
IM14
AB
J 2(A), J 3(B
Junction
Connector
W–B
A
BA
L–W
)
BB
W–B
EB
2
A
A
IC317IB21
2
L–W
10A EFI NO. 2
J 4
Junction
Connector
B
GR–B
GR–B
B
L–W
L–W
W
W–G
4RUNNER (EM03M0U)
Page 86
B–R
W–G
L
B–O
B–W
B–W
22
23
4
15
FUEL PUMP Relay
22 2
Y–B
B–Y
B–R
J 4
B–R
B–R
B–R
4
STAR/
NSW
FCFPR
GR–B
P
B8
5
)
ACCR
17 E
W–G
B
B
B–Y B–Y
STA
STA Relay
B–Y
B
J27
Junction
Connector
C11
+B
+B2
E1
2E
B
BB
IM15
10A
IGN
B–R
3
1H
11 1J
L
IC412
L
W–G
IC435
W–GB–O
8
E3E
MRELBATT
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E
Engine Control Module
IGSW
E9
B–O
B–R
1D6
C
Junction
Connector
C
B–O B–O
23 1E
B–O
P
N
P 1
Park/Neutral
Position SW
10 E30 C
Y–B
GR–B
B
L–W
L–W
W
W–G
BB
)
B
(
, J32
)
A
(
BA
J31
Junction
Connector
16
IC3
W–G
)
B
(
, J32
)
A
(
J31
Junction
)
B
(
, J41
)
A
(
J40
2IB1
B–R
4
5
W–B
Junction
Connector
W–B
M
BABA
AA
F14
Fuel Pump
IC45
Y–B
IM219
Y–B
B–R
2
F 8
Fuel Pump
Resistor
1
)
A
(
J 8
W–B
AB
Junction
Connector
AB
B–O B–O
CA
Connector
ABAB
L–W
L–W
W
BLBO
4RUNNER (EM03M0U)
85
Page 87
Engine Control for 1GR–FE
B–R B–R B–R B–R B–R
B–R
B–R
2
B–R
2
B–R
22
(ST)
7. 5A
STA
NO. 2
1K2
B–R
2
B–RL
2
Combination Meter
I 9
R–L
D
MPMP VPMP
E6
E5
O
R–G
Injector No. 1
1
D
D
R–L R–L
2C 3
#10
PPMP
E22
R
I10
Junction
Connector
J27
Injector No. 2
1
B
C4
#20
L 4
Canister Pump Module
I11
Injector No. 3
1
R
C5
#30
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E
Engine Control Module
I12
Injector No. 4
1
G
C6
#40
Leak
Detection Pump
I13
Injector No. 5
1
Y
C
#50
)
M
I14
L–YL–Y
Injector No. 6
1
IM24
7
C
#60
C12
STSW
Canister
Pressure Sensor
86
L–W
L–W
W
Vent Valve
38 1 6924
R
IE117
R
R–G
IE111
R–G
L–W
O
IE128
O
W–B
IE19
W–B
IM217
W–B
EF
IE143
IM222
BR
BR
IE142
L–R L–R
IM27
L–W
L–R
W
BR
4RUNNER (EM03M0U)
Page 88
∗ 1 : Shielded
A24
Accel Position Sensor
2
1
C 3
Camshaft Timing Oil
Control Valve RH
G–Y
C17
L–R
L–R
L–B
C16
VC VTA1
A23 A20
L–RR
2
EP2EP1VCP2VCP1VPA2VPA1
E2G
A29
R–W
21
251436
V–W
V–W
E
EPA2
THA
A22
R–B
1
C 2
Camshaft Timing Oil
Control Valve LH
W–R
IC434 IC431 IC426 IC398IC329 IC4
L–W
C15
OC2+OC1–OC1+
VTA2
A19
G–B
G–W
L–R
W–R
C14
OC2–
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E
Engine Control Module
M+
A5
)
P
∗1
(
18 E E19
M–
A4
L
VPA
GE01
R–B
R–B
VPA2
)
A17
B–Y
B–Y
26 E
VCPA
THW
B–L
27E
W–L
W–L
VCP2
LG–B
LG–B
20 E
EPA
VG
A30A21
R–Y
L–W
L–R
BR
56421
T 2
Throttle Control Motor
Throttle Position Sensor
12
IM1
3
W
BR
2
)
A
(
Engine Coolant
Temp. Sensor
E 2
1
L–W
M 1
BR
BRBR
A3A2A4
Mass Air
Flow Meter
A5A1
BR
THAE2GVGVC VTA1 VTA2 M+ M–
+BE2E2
L–W
BR
L–R
WW
L–W
4RUNNER (EM03M0U)
87
Page 89
Engine Control for 1GR–FE
∗ 1 : Shielded
W–R
Ignition Coil and
W–R
2
Igniter No. 2
333333
P–L
A9
IGT2
B23
W–R
2
I 1
Ignition Coil and
Igniter No. 1
Y–R
A8
IGT1
ACIS
33
A
PRG
A34
I 2
E2
A28
W–R
I 3
Ignition Coil and
Igniter No. 3
LG
IGT3
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E
Engine Control Module
A2A–
B31
W–R
W–R
I 4
Ignition Coil and
Igniter No. 4
LG–B
A10
IGT4
W–R
I 5
Ignition Coil and
A11
)
HA2AA2A+
1B 2
A1A+
B22
A1A–
B30
W–R
222
Igniter No. 5
GR
IGT5
W–R W–R
I 6
A12
HA1A
B
Ignition Coil and
W–R
2
Igniter No. 6
L
A13
IGT6
OX2B
B33
W–R
A24
IGF1
HT2B
B5
BR
W
L–W
)
A
(
V 1
)
ACIS
(
VSV
)
∗1
BR
W–L
A2A2
A1A1
L–W
G–Y
)
Purge
)
(
A
(
V 2
VSV
L–W
L–W L–W L–W
(
BR
Y
+B HT +B HT +B E1
21 21
W
A
A
BR
J27
Junction
Connector
A
W
)
∗1
(
B–W
)
Bank 2 Sensor 1
A13
Air Fuel Ratio Sensor
(
P
AF+ AF– OX HTAF–AF+
W
L
A12
E
J28
Junction
Connector
)
∗1
(
R–L
)
Bank 1 Sensor 1
Air Fuel Ratio Sensor
(
E
EE
B
313434
24
L–W
E
LBR
)
Bank 2 Sensor 2
H 8
Heated Oxygen Sensor
(
BRBR
BR
(∗1)
BR
L–RL–R
L–W
88
4RUNNER (EM03M0U)
Page 90
BAT
(
)
BAT
)(
A32
Airbag Sensor
Assembly
2IL1
OX1B
18 A
GSW2
23
L
L
D32
F/PS
HT1B
1A
T 8
Transponder Key
Computer
EFIO
6
W–R
D16
IMI
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E
Engine Control Module
EFII
7
L–R
15 D
IMO
VV1+ VV1–
19 C
Stop Light SW
Connector
10A
STOP
2
2
G–W
2
1
G–Y
B
B
E3C
E3C
15 IC3
G–Y
G–Y
HA
)
B
G–Y
(
, J32
)
A
(
EB
J31
Junction
Connector
G–Y
E15
STP
2
13 IC4
GR GR
+BM
10A
ETCS
2
S12
J 4
Junction
E7
)
VV2+
C
29
18 C
VV2–
28 C
NE–
20 C
NE+
21 C
BR
(∗1)
BR
L–R
L–W
)
∗1
(
W
BR
G
)
W
∗1
(
R
13
HTOX
+BE1
24
L–W
)
Bank 1 Sensor 2
Heated Oxygen Sensor
(
H 6
)
Bank 1
(
A1A2A1A2
)
A
(
VVT Sensor RH
V 4
A3A3A1
L–R
G
BR
Y
)
Bank 2
(
)
A
(
VVT Sensor LH
V 3
L–R
L
A2
)
BR
A
(
Crankshaft
Position Sensor
C 4
BR
BR
B
BR
4RUNNER (EM03M0U)
EE
89
Page 91
Engine Control for 1GR–FE
)
BAT
2
L–W
1C1
15
TAIL Relay
23
50A
J/B
1L5
G
B
B
G
D3D
D3D
10A
TAIL
J16
Junction
Connector
∗ 1 : Shielded
2
1
30A
DEFOG
2
2
IC4
18
Y–G Y–G
Y–G
D
AI
J31(A), J32(B
Junction
Connector
B
G
AD
BI
D
D
Junction
Connector
J22
)
(
)(
BAT
140A
ALT
2
51
32
2
B–R
DEFOG Relay
BR
G
13 D
D12
ELS2
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E
Engine Control Module
EKNKEKN2
B28
B
B
W
5ED1
W
)
(
)
(
∗1
∗1
KNK1
29 B
ED1
24
2
KNK2
B20
21 B
)
∗1
(
6ED1
)
RR
∗1
(
G
ED1
G
A2
)
∗1
(
BR
1ED1
BR
)
B
(
, J32
)
A
(
J31
THWO
14 D
HB
EA
Junction
Connector
C3D
C3D
L–BL–B
L–B
TWI ACT
Y–G
ELS1
ACT
25 D
)
AC1
E1
E01 E02 E03 ME01 E04 E05
24 D
BR
BR
BR
BR–W
BR–W
GR–G
1IK12IK1
GR–G
7B18 A7A
AC1
W–B
B3A7A6B41C
W–B
B7B6
W–B
W–B
90
)
)
A
(
Bank 2
Knock Sensor
(
K 2
A1
1
)
Bank 1
Knock Sensor
(
K 1
A16(A), A17(B
A/C Control Assembly
)
BR
BR
BR
EE
W–B
W–B
EF
W–B
W–B
4RUNNER (EM03M0U)
Page 92
F 9(A), F10(B
4WD Control ECU
L4
A
24
)
W–L
4WD
(
)
B
(
HB
, J30
)
A
(
Junction
Connector
J29
FA
)
W–L
4WD
(
15 IM2
)
W–L
4WD
(
C13
L4
)
A11
ADD Actuator
ADD
B18
)
GR
4WD
(
C
C
Junction
Connector
J28
C
)
GR
4WD
(
8C
4WD
ADD
3
)(
4WD
(
6EC1
)
GR GR
4WD
LG
D34 D33
CANL CANH
E 4(A), E 5(B), E 6(C), E 7(D), E 8(E
Engine Control Module
P–L
3C
AE
)
B
(
, J30
)
A
(
BA
J29
Junction
Connector
L
P–L
23 E
TC
)
3CCC
H
J18
Junction
Connector
H
P–L P–L
13 16
TC BAT
(
BAT
2
O
IC432
O
)
7. 5A
OBD
2
LG
L
V
P
V
14
CANL
P
6
CANH
SPD TACH
PSW
C10
G–W
1
P 2
Power Steering
Oil Pressure SW
EOM
35 D
W–B
)
B
(
BA
, J34
)
A
(
Junction
Connector
J33
AA
W–B
1D
V–R
W
30 DD8
R–B
B–W
SG CG
D 1
5
Data Link
Connector 3
BR
IM29
BR
4
W–B
E
E
W–B
J22
Junction
Connector
TAC
9
B–W
B–W
R–B
B–W
V–R
A
J37
Junction
Connector
IK
4RUNNER (EM03M0U)
BR
W–B
A
IGEE
J 5
Junction
Connector
91
Page 93
Engine Control for 1GR–FE
LG
L
V
P
Y 1
Yaw Rate Sensor
CANH CANL
3
2
B–W
R–B
B–W
V–R
W
C1
B
3
11
S11
Steering Sensor
R
B2B1
C2
Y
P
D1
A1
B
IC211
B
11
CANH CANLCANLCANH
V
D2
A2
W
IC222
W
25
SP1
12
L
E1
S28
Skid Control ECU
with Actuator
GR–R
LG
E2
ST–Plug
J47(A), J48(B), J49(C),
J50(D), J51(E), J52(F
Junction
Connector
F1
W–B
)
GR–R
B–W
R–B
B–W
V–R
92
IH
4RUNNER (EM03M0U)
Page 94
(
BAT
)(IG)
)
C
(
, C10
)
B
(
, C 9
)
A
(
C 8
7. 5A
GAUGE
1G4
R–L
C15 C16
Malfunction
Indicator Lamp
Combination Meter
4B
A76BB5
)
B
(
, J 9
)
A
(
J 8
Junction
10A
DOME
R
AH
BF
Connector
R
D
J 7
Junction
Connector
D
R
Speedometer
2
2
R
IC410
Tachometer
C13
GR–R
B–W
R–B
B–W
V–R
)
B
(
, J30
)
A
(
Junction Connector
J29
BR
IM17
BR
R–B
GR–R
FA
7IC2
GR–R
B–W
BH
)
B
(
, J 9
)
A
(
J 8
Junction
AF
B–W
B–W
AG
)
B
(
, J32
)
A
(
BF
Junction Connector
J31
B–W
V–R
1G1
1K11
Connector
3DB
3DB
V–R V–R
AG
BG
V–R
EE
4RUNNER (EM03M0U)
93
Page 95
Engine Control for 1GR–FE
System Outline
The engine control system utilizes a microcomputer and maintains overall control of the engine, transmission etc. An outline
of the engine control is given 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 which
varies according to the engine coolant temp. The engine coolant temp. is input into TERMINAL THW of the engine
control module as a control signal.
(2) Intake air temp. signal circuit
The intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp., which is input as a
control signal to TERMINAL THA of the engine control module.
(3) Oxygen sensor signal circuit
The oxygen density in the exhaust emission is detected and is input as a control signal from the heated oxygen sensors
to TERMINALS OX1B and OX2B of the engine control module.
(4) RPM signal circuit
The camshaft position is detected by the VVT sensor (Bank 1) and (Bank 2), and is input into TERMINALS VV1+ and
VV2+ of the engine control module as a control signal. Also, the engine RPM is detected by the crankshaft position
sensor and the signal is input into TERMINAL NE+ of the engine control module.
(5) Throttle position sensor signal circuit
The throttle position sensor detects the throttle valve opening angle as a control signal, which is input into TERMINALS
VTA1 and VTA2 of the engine control module.
(6) Vehicle speed circuit
The vehicle speed sensor detects the vehicle speed, and the signal is input into TERMINAL SPD of the engine control
module via the combination meter, from TERMINAL SP1 of the skid control ECU with actuator.
(7) Battery signal circuit
Voltage is constantly applied to TERMINAL BATT of the engine control module. When the ignition SW is turned on, the
voltage for engine control module start up power supply is applied through the EFI relay, to TERMINALS +B and +B2 of
the engine control module. The current from the IGN fuse flows to TERMINAL IGSW of the engine control module, and
voltage is constantly applied to TERMINAL +BM.
(8) Intake air volume signal circuit
The intake air volume is detected by the mass air flow meter, and is input as a control signal to TERMINAL VG of the
engine control module.
(9) Stop light SW signal circuit
The stop light SW is used to detect whether the vehicle is braking or not, and the signal is input into TERMINAL STP of
the engine control module as a control signal.
(10)Starter signal circuit
To confirm whether the engine is cranking, the voltage applied to the starter motor when the engine is cranking is
detected, and is input into TERMINAL STA of the engine control module as a control signal.
(11) Engine knock signal circuit
Engine knocking is detected by the knock sensors, and is input into TERMINALS KNK1 and KNK2 of the engine control
module as a control signal.
(12)A/C SW signal system
The operating voltage of the A/C magnetic clutch is detected and input in the form of a control signal to TERMINAL AC1
of the engine control module.
(13)Air fuel ratio signal circuit
The air fuel ratio is detected and input as a control signal into TERMINALS A1A+ and A2A+ of the engine control
module.
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2. Control System
∗ SFI system
The SFI system monitors the engine condition through the signals input from each sensors to the engine control module.
The control signal is sent to the engine control module TERMINALS #10, #20, #30, #40, #50 and #60 to operate the
injector (Fuel injection). The SFI system controls the fuel injection by the engine control module in response to the driving
conditions.
∗ ESA system
The ESA system monitors the engine condition through the signals input from each sensors to the engine control module.
The best ignition timing is decided according to this data and the data memorized in the engine control module. The
control signal is output to TERMINALS IGT1, IGT2, IGT3, IGT4, IGT5 and IGT6, and these signals control the igniter to
provide the best ignition timing.
∗ Heated oxygen sensor heater control system
The heated oxygen sensor heater control system turns the heater on when the intake air volume is low (Temp. of exhaust
emission is low), and warms up the heated oxygen sensors to improve their detection performance. The engine control
module evaluates the signals from each sensors, and outputs current to TERMINAL HT1B or HT2B to control the heater.
∗ Air fuel ratio sensor heater control system
The air fuel ratio sensor heater control system turns the heater on when the intake air volume is low (Temp. of exhaust
emission is low), and warms up the air fuel ratio sensor to improve detection performance of the sensor.
The engine control module evaluates the signals from each sensor, current is output to TERMINALS HA1A and HA2A,
controlling the heater.
∗ Fuel pump control system
The engine control module supplies current to TERMINAL FPR, and controls the operation speed of the fuel pump with
the FUEL PUMP relay.
∗ ACIS
The ACIS includes a valve in the bulkhead separating the surge tank into two parts. This valve is opened and closed in
accordance with the driving conditions to control the intake manifold length in two stages, for increased engine output in all
ranges from low to high speeds.
∗ ETCS–i
The ETCS–i controls the engine output at its optimal level in accordance with the opening of the accelerator pedal, under
all driving conditions.
∗ Engine start control system
The engine control module allows power to be supplied from the TERMINAL STAR/NSW to the STA relay via park/neutral
position SW until complete combustion is confirmed by engine RPM after the detection of ignition SW ST signal by the
TERMINAL STSW.
With this arrangement, engine can be started without holding the ignition key in the ST position. At the same time, the
TERMINAL ACCR is controlled so that the engine control module turns off ACC CUT relay, shutting off power to the
accessories.
∗ VVT–i
Controls the intake camshaft to an optimal valve timing in accordance with the engine condition.
3. Diagnosis System
When there is a malfunction in the engine control module signal system, the malfunctioning system is recorded in the
memory. The malfunctioning system can be found by reading the code displayed on the malfunction indicator lamp.
4. Fail–Safe System
When a malfunction has occurred in any system, there is a possibility of causing engine trouble due to continued control
based on that system. In that case, the fail–safe system either controls the system using the data (Standard values)
recorded in the engine control module memory, or else stops the engine.
4RUNNER (EM03M0U)
95
Page 97
Engine Control for 1GR–FE
:
:
24
Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
24
Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
25
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
25
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
28
Instrument Panel Wire and Center J/B (Instrument Panel Brace RH)
28
Instrument Panel Wire and Center J/B (Instrument Panel Brace RH)
: Parts Location
Code See Page Code See Page Code See Page
A11 34 (1GR–FE) I3 35 (1GR–FE) J34 B 38
A12 34 (1GR–FE) I4 35 (1GR–FE) J37 38
A13 34 (1GR–FE) I5 35 (1GR–FE) J40 A 40
A16 A 36 I6 35 (1GR–FE) J41 B 40
A17 B 36 I9 35 (1GR–FE) J47 A 38
A24 36 I10 35 (1GR–FE) J48 B 38
A32 36 I11 35 (1GR–FE) J49 C 38
C2 34 (1GR–FE) I12 35 (1GR–FE) J50 D 38
C3 34 (1GR–FE) I13 35 (1GR–FE) J51 E 38
C4 A 34 (1GR–FE) I14 35 (1GR–FE) J52 F 38
C8 A 37 I18 37 K1 35 (1GR–FE)
C9 B 37 J2 A 35 (1GR–FE) K2 A 35 (1GR–FE)
C10 C 37 J3 B 35 (1GR–FE) L4 40
D1 37 J4 38 M1 A 35 (1GR–FE)
E2 34 (1GR–FE) J5 38 P1 35 (1GR–FE)
E4 A 37 J7 38 P2 35 (1GR–FE)
E5 B 37 J8 A 38 S11 39
E6 C 37 J9 B 38 S12 39
E7 D 37 J16 38 S28 35 (1GR–FE)
E8 E 37 J18 38 T2 35 (1GR–FE)
F8 34 (1GR–FE) J22 38 T8 39
F9 A 37 J27 38 V1 A 35 (1GR–FE)
F10 B 37 J28 38 V2 A 35 (1GR–FE)
F14 40 J29 A 38 V3 A 35 (1GR–FE)
H6 34 (1GR–FE) J30 B 38 V4 A 35 (1GR–FE)
H8 34 (1GR–FE) J31 A 38 Y1 39
I1 35 (1GR–FE) J32 B 38
I2 35 (1GR–FE) J33 A 38
Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 22 Engine Room R/B (Engine Compartment Left)
Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1C
1D
1E
1G
1H
1J
1K
1L
3C
3D
3E
96
4RUNNER (EM03M0U)
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:
Connector Joining Wire Harness and Wire Harness
46
Floor No.2 Wire and Engine Room Main Wire (Left Kick Panel)
46
Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
46
Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
47
Engine Wire and Instrument Panel Wire (Right Side of Blower Unit)
:
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
EC1 45 (1GR–FE) Engine Wire and Differential Wire (Near the Front Differential)
ED1 45 (1GR–FE) Engine Wire and Sensor Wire (Rear Side of Right Bank Cylinder Block)
IB1
IB2
IC2
IC3
IC4
IE1 46 Instrument Panel Wire and Floor No.2 Wire (Left Kick Panel)
IK1 47 Instrument Panel Wire and Instrument Panel Wire (Left Upper Side of the Glove Box)
IL1 47 Instrument Panel Wire and Instrument Panel Wire (Right Upper Side of the Glove Box)
IM1
IM2
Ground Points
Code See Page Ground Points Location
EB 45 (1GR–FE) Front Left Fender
EE 45 (1GR–FE) Rear Side of Right Bank Cylinder Block
EF 45 (1GR–FE) Rear Side of Left Bank Cylinder Block
IG 46 Left Kick Panel
IH 46 Instrument Panel Brace LH
IK 46 Right Kick Panel
BL 48 Floor Seat Crossmember LH
BO 48 Rear Pillar LH
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Page 99
Engine Immobiliser System
(
)(IG)
BAT
EFIO
6
B
B
B
B
1J11
B–O B–O B–O
10A
IGN
J 8
Junction
Connector
J31
Junction
Connector
EFII
7
2
12
GND
14
2
W–RW–RW–R
1B4
1L4
3EB
3EB
10A
ECU–B
IND
3
G
G
F
F
SIL
7
9
R–Y
R–Y
3AA
3AA
R–Y R–Y
D 1
Data Link
Connector 3
J18
Junction
Connector
J35
Junction
Connector
I17
Transponder Key Amplifier
Transponder Key Coil
ANT1 ANT2
GNDTXCTCODEVC5
7541
P–G
GR–B
KSW
10
LG–R
1312118
AGND
TXCTCODEVC5D+BIG
L
T 8
Transponder Key
Computer
CTY
4
W–R
16 15
IMI
E 7
Engine Control
Module
L–R
IMO
W–B
A
J33
Junction
Connector
A
W–B
A
A
J37
Junction
Connector
IK
V–W
5
LP
GND
7
W–B
3FB
3FB3FB
W–B
D 3
Security
Indicator
Light
W–B
A
II
J24
Junction
Connector
G–Y
BA
CB
G–Y
2
1
BA
BA
W–B W–B
A
IG
)
B
(
, J15
)
A
(
J14
Junction
Connector
K 3
Unlock
Warning SW
)
B
(
Junction
Connector
J15
J 5
Junction
Connector
R–B
F
J18
Junction
Connector
F
R–B
1
D12
Door Courtesy SW
Front LH
98
4RUNNER (EM03M0U)
Page 100
: Parts Location
:
:
25
Instrument Panel Wire and Driver Side J/B (Lower Finish Panel)
28
Instrument Panel Wire and Center J/B (Instrument Panel Brace RH)
28
Instrument Panel Wire and Center J/B (Instrument Panel Brace RH)
:
Code See Page Code See Page Code See Page
D1 37 J8 38 J33 38
D3 37 J14 A 38 J35 38
D12 40 J15 B 38 J37 38
E7 37 J18 38 K3 39
I17 37 J24 38 T8 39
J5 38 J31 38
Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
2 22 Engine Room R/B (Engine Compartment Left)
Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1B 24 Engine Room Main Wire and Driver Side J/B (Lower Finish Panel)
1J
1L
3A
3E
3F
Ground Points
Code See Page Ground Points Location
IG 46 Left Kick Panel
II 46 Instrument Panel Brace RH
IK 46 Right Kick Panel
4RUNNER (EM03M0U)
99
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