Toyota 4 Runner 2006 User Manual

H SYSTEM CIRCUITS

2006 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

Power Outlet (115V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300

Power Outlet (12V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298

Power Seat (Driver’s Seat w/ Driving Position Memory) . . . . . . . . . . . . . . . . 308

Power Seat (Driver’s Seat w/o Driving Position Memory) . . . . . . . . . . . . . . . 312

Page

258

52

4RUNNER (EM00T0U)

H

Page

Power Seat (Front Passenger’s Seat) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

T aillight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

Theft Deterrent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

Tire Pressure Warning System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326

TOYOT A Parking Assist (Rear View Monitor) . . . . . . . . . . . . . . . . . . . . . . . . . . 334

TRAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258

Trailer T owing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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

316

4RUNNER (EM00T0U)

53

F RELAY LOCATIONS

t

[Engine Compartment]

Engine Room R/B No.3Skid Control ECU

with Actuator

Air Injection
Control Driver

[Body]

Engine Room
R/B

Engine Room R/B No.4

Rear Seat Audio Controller Tire Pressure Monitor ReceiverMoon Roof Control ECU

Stereo Componen
Amplifier

20

Towing Converter Relay

4RUNNER (EM00T0U)

Door Control Receiver Back Door ECU

[Instrument Panel]

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 Key
Computer

Engine Control
Module

4WD Control
ECU

Tire Pressure
Monitor ECU

A/C Control
Assembly

Shift Lock
Control ECU

[Seat]

ECU and SW

Occupant Classification ECUPosition Control

21

4RUNNER (EM00T0U)

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

*3

*2 *4

21

1

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)

*11

212
10A

MIR HEATER

10A

HEAD (HI RH)

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 (EM00T0U)

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 (EM00T0U)

23

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

20191817
10987

161514 131211

654321

(from Roof Wire)

1A

910

654321

87

1920 161514 13 12 111817

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
6 7 8 9 10111213

(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 87 654321

21222324 2019 181716 15 14 13

78 65432

1516 141312 11 10

1
9

1F 1E

1516

78152364

913 101114 12

(from Floor No.2 Wire)

1817 161514132019242322 21

65432187121110 9

(from Engine Room Main Wire)

24

4RUNNER (EM00T0U)

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

15161413121110

7865432

2
1

222120191817

654321

35

25262423

91087

2
1

35

323130292827
161514131211

4

2

3
2

1

1

2122 23242019181716151413
910111287654321

1K 1L 1J

1615 14 10131211

87 6 254 13

9

871211109

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 (EM00T0U)

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 (EM00T0U)

13

1K

(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

ACT­HRLY

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

GND2

WMTR

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 (EM00T0U)

27

F RELAY LOCATIONS

: Center J/B Instrument Panel Brace RH (See Page 21)

Black

AA A
BBBBB

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 FF 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 (EM00T0U)

Memo

4RUNNER (EM00T0U)

29

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 (EM00T0U)

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 (EM00T0U)

31

H SYSTEM CIRCUITS

2006 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

Power Outlet (115V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300

Power Outlet (12V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298

Power Seat (Driver’s Seat w/ Driving Position Memory) . . . . . . . . . . . . . . . . 308

Power Seat (Driver’s Seat w/o Driving Position Memory) . . . . . . . . . . . . . . . 312

Page

258

52

4RUNNER (EM00T0U)

H

Page

Power Seat (Front Passenger’s Seat) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

T aillight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

Theft Deterrent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

Tire Pressure Warning System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326

TOYOT A Parking Assist (Rear View Monitor) . . . . . . . . . . . . . . . . . . . . . . . . . . 334

TRAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258

Trailer T owing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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

316

4RUNNER (EM00T0U)

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

30A TOWING BRK

2

30A BATT CHG

2

50A A/PUMP

2

1

5

4

2

1

1

1

1

1

1

1

12

15A AC115V INV

12

R

2

50A AIR SUS

50A AM1

2

50A J/B

2

40A TOWING

2

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

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 (EM00T0U)

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 (EM00T0U)

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

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 (EM00T0U)

: 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 (EM00T0U)

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

P 1

IM111IC42

B–Y

P

N

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

EB

W–B

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 (EM00T0U)

: 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 (EM00T0U)

59

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 (EM00T0U)

B–R

B–R B–RB–R

B–R

R–Y

R–W

W–B

41

23

R–Y

B–R

W–B

I 8

Ignition Coil and

B–R

Igniter No. 8

G–B

W–B

41

23

R–W

W–B

N 2

B–R

)

2

Ignition No. 2

Noise Filter

(

1

N 1

)

2

Ignition No. 1

Noise Filter

(

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

I 6

R–Y

R–W

Ignition Coil and

B–R

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 (EM00T0U)

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 (EM00T0U)

Memo

4RUNNER (EM00T0U)

63

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 (EM00T0U)

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

N 1

B–R

)

2

Ignition No. 1

Noise Filter

(

1

W–B

B–R

I 6

Ignition Coil and

Igniter No. 6

L

L

IGT6

W–B

41

23

W–R

W–B

W–B

E 4

Engine Control Module

EF

65

4RUNNER (EM00T0U)

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 (EM00T0U)

Memo

4RUNNER (EM00T0U)

67

Charging

W

2

W–L

2

2

50A AM1

1

2

140A ALT

1

2

B

2

ACC

W–L

R

R

22

2

AM1

7

ST2

I18

Ignition SW

∗ 1 : 2UZ–FE
∗ 2 : 1GR–FE

W

22

IG1

IG2

L–Y

4

B–R

6AM2

5 EA1 EA11
1 EA2

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

Combination Meter

)
B

(
, J 9

)
A

(
J 8

Charge

Junction

Connector

1D6

1G4

R–L

GR

1C2

1E20

Y–RY–RY–R L–Y

E

Connector

E

D

Connector

D

EA12
EA22

(∗1)
(∗2)

15A
IG1

7. 5A
GAUGE

C15

Junction

A16

J 1 J 1

Junction

BG

AG

68

Y–R

30A AM2

1

7. 5A ALT–S

1

2

B

Battery

W

S

G 1(A), G 2(B

Generator

GR

Y–R

B4B2B1A1

LIG B

IC Regulator

)

W

4RUNNER (EM00T0U)

: 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 (EM00T0U)

69

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

2

W

W–B

15

EFI Relay

23

22 22

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

BA

BB

W–B

EB

10A EFI NO. 2

2

2

A

J 4

A

Junction
Connector

A

L–W

L–W

IC317IB21

B

GR–B

GR–B

B

L–W

L–W

W

W–G

4RUNNER (EM00T0U)

BB

B–R

W–G

L

B–O

B–W

FUEL PUMP Relay

B–W

22

23

4

15

22 2

F 8

B–R

B–R

2

Fuel Pump

Resistor

1

B–Y

G–R

IC45

G–R

IM219

G–R

J 4

)
B

(
, J41

)
A

(
J40

B–R

C

Junction

Connector

C

B–O B–O

2IB1

B–R

4

M

5

W–B

BABA

AA

Junction

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

(
J31

BA

Junction

Connector

B–O

AB

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

EB1

4

P

B8

STAR/
NSW

+B2

2E

ABAB

4

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 (EM00T0U)

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

7IM2

1 EB2

W–L W–L

2

AIP

4296183

L–RL–R

1

BR

VCE2

3

L–R

3 EB24 EB2

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 (EM00T0U)

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

G

12465

M–M+VTA2VTA1VC

E2

3

W

BR

OC2–

E 4(A), E 5(B), E 6(C), E 7(D), E 8(E

Engine Control Module

19 A

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 (EM00T0U)

73

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

ACIS

33

I 2

E2

28 A

A

R

BR

Ignition Coil and

Igniter No. 2

2

15 A

IGT2

)
∗1

(

R–W

LG–B

A2A+ HA2A

23 B

P

R–W

222

Ignition Coil and

Igniter No. 3

I 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

B–W

R–Y

Ignition Coil and

Ignition Coil and

Igniter No. 4

I 4

L–Y

10 A

IGT4

Igniter No. 5

I 5

13 A

)

A1A+

22 B

)
∗1

(

Y

A1A–

30 B

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

B1B2

B2B1

L–W

C

)
B

(
V 1

)
ACIS

(
VSV

DC

D

L–W

BR

J28

Junction
Connector

L–W

434313

)

Bank 1 Sensor 1

Air Fuel Ratio Sensor

(

A12

L–W

E

E

E

E

A13

)

Bank 2 Sensor 1

Air Fuel Ratio Sensor

(

W–B

1212

W

J28

Junction
Connector

E

EE

AF+ AF– HTOXAF–AF+

W

BR BR

J26

C

Junction
Connector

W

CC

)

E1+BHT+BHT+B

42

BR P

H 8

Bank 2 Sensor 2

Heated Oxygen Sensor

(

BR

(∗1)

W–B

L–R

W–B

W–B

W–B

L–W

74

4RUNNER (EM00T0U)

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

19

G2+3G2–

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

J 4

S12

Junction

IC413

7E

+BM

)

VV1–VV1+

24

C

VV2+

C18

VV2–

C28

2

2

G–W

2

Stop Light SW

1

G–Y

B

Connector

B

10A
STOP

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

)

Bank 1 Sensor 2

Heated Oxygen Sensor

(

)
∗1

(

)
B

(
V 4

R

G

VVT Sensor RH

C 1

Camshaft Position

Sensor

)
∗1

(

)
(

B
V 3

VVT Sensor LH

W

12

L–R B

L

Y

B1B1B2

B2B2B1

W–B

)

∗1

(

)

B

(

C 4

Crankshaft

Y

Position Sensor

L

W–B

L–W

ED

75

4RUNNER (EM00T0U)

Engine Control for 2UZ–FE

B B

BAT

50A
J/B

2

L–W

1C1

15

TAIL Relay

23

)

10A
TAIL

51L

G

B

J16

Junction
Connector

B

G

3DD

3DD

E 4(A), E 5(B), E 6(C), E 7(D), E 8(E

Engine Control Module

DA

G

IB

G

13 D

ELS1

∗ 1 : Shielded

D

B

Y–G

D12

ELS2

)

B

(

, J32

)

A

(

J31

)

Y–G

Junction

Connector

)

B

(

, J23

)

A

(

J22

EB

Junction

Connector

DA

30A
DEFOG

2

1

2

2

Y–GY–G

18IAIC4

(

)(

BAT

140A
ALT

22

51

DEFOG
Relay

32

2

B–R

W–B

KNK2 EKNK

21 B

)

∗1

(

2 EB1

)

∗1

(

EKN2

B20

WW

B

EB13EB1 7 EB1EB168

B

B2

)

)
B

(

Bank 2

Knock Sensor

(

K 2

B1

BR

BR

KNK1

B29

)

G

∗1

(

)

G

∗1

(

1

2

K 1

28 B

)

Knock Sensor

(

R

R

Bank 1

THWO

D14

BH

)
B

(
, J32

)
A

(

AE

J31

Junction

Connector

L–B L–B

3DC

3DC

L–B

A7A18 B7

A16(A), A17(B

A/C C o nt ro l A ss embly

ACT

D25

BR–W

IK12IK11

BR–W

ACTTWI

)

AC1

D24

GR–G

GR–G

AC1

4WD

C8

W–B W–B

)(
4WD

(

)
4WD

E1

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

76

4RUNNER (EM00T0U)

EE

EE

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

3 EA1

Air Pump

A46

G

2

M

1

W–B

W–B

EQ

4 EA1

Air Switching Valve

A47

L

1

2

W–B

IN14E4

BR

R–B

B–W

V–R

4RUNNER (EM00T0U)

77

Engine Control for 2UZ–FE

(

)

BAT

7. 5A
OBD

2

2

LG

L

P–L

3C

3CCC

O

IC432

Y 1

Yaw Rate Sensor

D 1

J18

Junction

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

V

14

CANL

Junction

Connector

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 (EM00T0U)

GR–R

GR–R

R–B

B–W

V–R

IH

(

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

Connector

10A
DOME

R

J 7

Speedometer

Junction

Connector

D

D

R

AH

BF

R

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

Connector

V–R

1G1

1K11

3DB

3DB

V–R V–R

AG

BG

V–R

4RUNNER (EM00T0U)

ED

79

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
VT A1 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 ST A 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 (EM00T0U)

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 (EM00T0U)

81

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 (EM00T0U)

:

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 (EM00T0U)

83

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

2

W

W–B

15

EFI Relay

23

22 22

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

BA

BB

W–B

EB

10A EFI NO. 2

2

2

A

J 4

A

Junction
Connector

A

L–W

L–W

IC317IB21

B

GR–B

GR–B

B

L–W

L–W

W

W–G

4RUNNER (EM00T0U)

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

C

Junction

Connector

C

B–R

B–R

4

STAR/
NSW

FCFPR

GR–B

P

B8

5

)

ACCR

17 E

W–G

B

B

STA

STA Relay

B–Y

B

J27

Junction

Connector

B–Y B–Y

C11

+B

+B2

E1

2E

B

BB

IM15

10A
IGN

3

11 1J

B–R

1H

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

B–O B–O

23 1E

B–O

P 1

P

N

Park/Neutral

Position SW

10 E30 C

Y–B

GR–B

B

L–W

L–W

W

W–G

)

B

(

, J32

)

A

(

J31

BB

BA

Junction

Connector

)
B

(
, J32

)
A

(
J31

Junction

IC3

16

W–G

)

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

F 8

B–R

2

Fuel Pump

Resistor

1

)
A

(
J 8

W–B

Junction

Connector

AB

AB

B–O B–O

CA

Connector

ABAB

L–W

L–W

W

BLBO

4RUNNER (EM00T0U)

85

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

MPMP VPMP

E6

E5

O

R–G

Injector No. 1

1

D

D

Junction

Connector

J27

D

R–L R–L

2C 3

#10

PPMP

E22

R

I10

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

BR

IE143

BR

IM222

IE142

L–R L–R

IM27

L–W

L–R

W

BR

4RUNNER (EM00T0U)

∗ 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

VPA

M–

A4

L

R–B

R–B

VPA2

)

GE01

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

5 6421

T 2

Throttle Control Motor
Throttle Position Sensor

12

IM1

3

W

BR

E 2

Engine Coolant

Temp. Sensor

L–W

2

)
A

(

1

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 (EM00T0U)

87

Engine Control for 1GR–FE

∗ 1 : Shielded

33

ACIS

A

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

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

A12

HA1A

B

W–R

2

I 6

Ignition Coil and

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

A13

W

B–W

)

Bank 2 Sensor 1

Air Fuel Ratio Sensor

(

)
∗1

(

P

AF+ AF– OX HTAF–AF+

L

A12

W

E

J28

Junction
Connector

R–L

)

Bank 1 Sensor 1

Air Fuel Ratio Sensor

(

)
∗1

(

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 (EM00T0U)

BAT

(

)

BAT

)(

A32

Airbag Sensor
Assembly

GSW2
23

2IL1

OX1B

18 A

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

2

13 IC4

GR GR

+BM

10A
ETCS

2

S12

J 4

Junction

E7

2

2

G–W

2

Stop Light SW

1

G–Y

B

Connector

B

10A
STOP

G–Y

E3C

E3C

G–Y

15 IC3

G–Y

)
B

(
, J32

)
A

(

J31

HA

EB

Junction

Connector

STP

G–Y

E15

)

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

(

L

A2

)

BR

A

(

Crankshaft

Position Sensor

C 4

BR

)
A

(
V 3

Y

VVT Sensor LH

L–R

R

13

HTOX

+BE1

24

L–W

H 6

)

Bank 1 Sensor 2

Heated Oxygen Sensor

(

A1A2A1A2

)

A

(

VVT Sensor RH

V 4

A3A3A1

L–R

G

BR

BR

B

BR

4RUNNER (EM00T0U)

EE

89

Engine Control for 1GR–FE

)

BAT

2

L–W

1C1

15

TAIL Relay

23

50A
J/B

D3D

D3D

1L5

G

B

B

G

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

(

BR

BR

)
∗1

(

)
∗1

(

KNK1

29 B

24

2

ED1

KNK2

B20

21 B

)

∗1

(

6ED1

)

RR

∗1

(

G

ED1

G

A2

1ED1

)
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

K 1

)

Bank 1

Knock Sensor

(

A16(A), A17(B

A/C C o nt ro l A ss embly

)

BR

BR

EE

BR

W–B

W–B

EF

W–B

W–B

)

)
A

(

Bank 2

Knock Sensor

(

K 2

A1

1

4RUNNER (EM00T0U)

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

)

J28

ADD

C

Junction

Connector

C

8C

4WD

B18

GR

GR

(

)

BAT

A11

ADD Actuator
ADD
3

)(
4WD

(

)
4WD

(

C

)
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

7. 5A
OBD

2

2

LG

L

O

IC432

O

V

14

CANL

CANH

V

P

P

6

P 2

SPD TACH

)
B

(
, J34

)
A

(
J33

EOM

35 D

Junction

Connector

W–B

BA

AA

W–B

1D

V–R

PSW

C10

G–W

1

Power Steering

Oil Pressure SW

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 (EM00T0U)

BR

W–B

A

IGEE

J 5

Junction
Connector

91

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

S11

Steering Sensor

11

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 (EM00T0U)

(

BAT

)(IG)

)
C

(
, C10

)
B

(
, C 9

)
A

(
C 8

Combination Meter

7. 5A
GAUGE

1G4

AH

R–L

C15 C16

Malfunction

Indicator Lamp

4B

A76BB5

)
(

)
(

B
, J 9

A
J 8

Junction

Connector

BF

R

R

J 7

Junction

Speedometer

D

Connector

D

R

10A
DOME

Tachometer

2

2

R

IC410

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

Connector

V–R

1G1

1K11

3DB

3DB

V–R V–R

AG

BG

V–R

EE

4RUNNER (EM00T0U)

93

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 LH and RH, 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
VT A1 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 ST A 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.

94

4RUNNER (EM00T0U)

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 (EM00T0U)

95

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 (EM00T0U)

:

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

4RUNNER (EM00T0U)

97

Engine Immobiliser System

(

)(IG)

BAT

EFIO

6

1J11

B

B

B

B

B–O B–O B–O

10A
IGN

J 8

Junction
Connector

J31

Junction
Connector

EFII

7

GND

14

2

2

W–RW–RW–R

1B4

1L4

3EB

3EB

12

10A
ECU–B

IND

3

SIL

7

R–Y

G

G

R–Y

3AA

3AA

F

F

R–Y R–Y

9

D 1

Data Link
Connector 3

J18

Junction
Connector

J35

Junction
Connector

I17

Transponder Key Amplifier

Transponder Key Coil

ANT1 ANT2

GNDTXC TCODEVC5
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

J37

A

A

A

Junction

Connector

W–B

W–B

IK

J33

Junction
Connector

A

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 (EM00T0U)

: 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 (EM00T0U)

99

Multiplex Communication System – BEAN Bus

MPX3

26 C A23

BR–Y

B

J19

Junction
Connector

B

BR–Y

31

MPX1 MPX2

T 5

Theft Deterrent
ECU

MPX2

BR–RBR–RR

IE140

BD19

1

B 4(A), B 6(C

Body ECU

B 8

Back Door
ECU

)

100

4RUNNER (EM00T0U)

Multiplex Communication System Includes Following Systems

:

∗ Automatic Light Control
∗ Door Lock Control
∗ Front Fog Light
∗ Garage Door Opener
∗ Headlight
∗ Interior Light
∗ Key Reminder
∗ Light Auto Turn Off System
∗ Mirror Heater
∗ Power Window
∗ Rear Window Defogger
∗ Rear Wiper and Washer
∗ Seat Belt Warning
∗ Theft Deterrent
∗ Wireless Door Lock Control

: Parts Location

Code See Page Code See Page Code See Page
B4 A 36 B8 40 T5 39
B6 C 36 J19 38

Connector Joining Wire Harness and Wire Harness

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

IE1 46 Instrument Panel Wire and Floor No.2 Wire (Left Kick Panel)

BD1 48 Back Door No.1 Wire and Floor No.2 Wire (Left Rear Side of Roof)

101

4RUNNER (EM00T0U)

Multiplex Communication System – CAN Bus

Y 1

Yaw Rate Sensor

CANH

3

W

C1C2A1A2F1

B

CANL

214

R

Y

D 1

Data Link
Connector 3

CANH

6

P

B

11 IC2

E 7

Engine Control Module

CANL CANH CANL

33

V

J47(A), J48(B), J49(C),
J50(D), J51(E), J52(F

Junction
Connector

W

22

IC2

L

)

34

LG

E2E1D2D1B2B1

ST–Plug

102

B

311 1125

CANH

S11

Steering Sensor

CANL

CANH CANL

S28

Skid Control ECU
with Actuator

W

4RUNNER (EM00T0U)

W–B

IH

S28

:

:

System Outline

CAN has two lines as a pair which make communication with operating voltage. CAN has excellent data speed and error
detecting capacity. It consists of vehicle control systems such as engine control module, data link connector 3, skid control
ECU with actuator, steering sensor and yaw rate sensor.

This system is working for the following systems:

∗ ABS
∗ Auto LSD
∗ Cruise Control
∗ Downhill Assist Control
∗ Electronically Controlled Transmission and A/T Indicator
∗ Engine Control
∗ Hill–Start Assist Control
∗ TRAC
∗ VSC

: Parts Location

Code See Page Code See Page Code See Page

D1 37 J49 C 38 S11 39

E7 37 J50 D 38
J47 A 38 J51 E 38
J48 B 38 J52 F 38 Y1 39

Connector Joining Wire Harness and Wire Harness

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

IC2 46 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)

33 (2UZ–FE)
35 (1GR–FE)

Ground Points

Code See Page Ground Points Location

IH 46 Instrument Panel Brace LH

103

4RUNNER (EM00T0U)

Multiplex Communication System – BEAN

(

)(

BAT

50A
J/B

2

2

L–W

)(

BAT

20A
DR/LCK

2

2

)(

ACC

7. 5A
ACC

G–W

)

IG

15A
RR
WSH

WIG

1

ACC BDR1

12

1E9

B 4(A), B 5(B), B 6(C

Body ECU

CLTB CLTE

622C

L–Y

IG13IG12IG11

L–Y

1

CLTB

A39

Automatic Light
Control Sensor

)

CLTS

C21 4 C

G–W

G–W

34

CLTE

Y

Y

CLTS

L–W

104

4RUNNER (EM00T0U)

B 4(A), B 5(B), B 6(C

Body ECU

)

TAIL Relay

11C

L–W

TRLY

18

32

51

L–W

HRLY

17

1B8

W

HF2

W

IC419

C20

R–B

R–B

2

10A
HEAD
(

)

LO LH

2

2

H 4

)
Low

(

Headlight RH

)

R–Y

Low

(

2212

H 2

Headlight LH

1

10A
HEAD
(

LO RH

2

222

R–B

2

1111

10A

)

)
High

(

H 1

Headlight LH

HEAD
(

)

HI LH

2

R–L

1

10A
HEAD
(

)

HI RH

2

R–W

R–W

W–B

W

W

R–B

2

2

23

HEAD
Relay

15

2

B

Battery

R–B

W–B

R–G

IC422

R–G

R–L

IC423

R–W

R–L

R–W

R–G

W–B

W–B

W–B

EB

4RUNNER (EM00T0U)

105

Multiplex Communication System – BEAN

R–W

∗ 1 : w/ Daytime Running Light
∗ 2 : w/ Rear Seat Enter tainment System
∗ 3 : w/o Rear Seat Enter tainment System

C12

Combination SW

Light

)
High

(

2

H 3

1

R–G

IN110

Headlight RH

Fog

Turn

Dimme r S W

Light

Control SW

SW

SW

B 4(A), B 5(B), B 6(C

Body ECU

OFF

Tail

Head

Auto

Low

High

Flash

OFF

ON

LH

RH

)

HEAD TAIL

R

IH11IH110

R

G–R

17

R–G

C8

G

IH18

G

W–B

J12(A), J13(B

Junction
Connector

AHF

8

C7

R–W

IH19

R–W

711

13

G–B

R–G

DB

C3C1

G–O

G–O

1216141310

)

R–L

2

IC3

W–B

(∗1)

W–B

2

)

B

(

J15

Junction

Connector

)
∗1

(

)
∗1

(

G–Y

W–B

BA

BA

W–B

G–R

R–L

R–W

R–G

W–B

W–B

106

R–G

EAEA EA

R–G

R–G

)

B

(

, J11

)

A

(

J10

BA

Junction

Connector

BB

R–G

)

G–Y(∗1

)

G–B(∗1

R–W

R–G

W–B

W–B

W–B

A

IG

A

J 5

Junction
Connector

W–B

4RUNNER (EM00T0U)

B 4(A), B 5(B), B 6(C

Body ECU

)

POWER Relay

4

PWS

GND2

16

)

W

∗2

(

21H11A11H25 1J

L

W–B

)

)

∗2

∗3

(

(

W

W

A3
B3

ON

OFF

)
B

(

,

)
A

(
I20

Interior Light

)
∗3

(
W

DOOR

(∗2)

A1

(∗3)

B1

PWS

21

(

)(

BAT

51

2

32

21F

W

L–O

L–O

M 5

Moon Roof

Control ECU

IC312

GG

F 1

)

BAT

30A
POWER

2

2

LG

FR FOG
Relay

G

G

2

Front Fog Light LH

W–B

W–B

F 2

G

2

Front Fog Light RH

1

W–B

R–L

15A
FR FOG

22

25

13

22

G–R

B

J 3

Junction

Connector

B1

W–B

W–B

)

G–Y(∗1

)

G–B(∗1

R–W

R–G R–G

W–B

W–B

W–B

W–B

GND1

4

)

W(∗2

)

W(∗3

)

)

∗3

(

W

∗2

(

W

(∗2)

A2

(∗3)

B2

L 2

)

W(∗3

)

W(∗2

W(∗3

32

OFF

ON

DOOR

Luggage Compartment

Light

1

)

W

∗2

(

13

81A71A

)

W(∗2

W(∗3

W

L–O

L–O

W–B

G–Y(∗1

G–B(∗1

R–W

W–B

W–B

W–B

ILE

W

W

)

)

)(
∗2

(

)
∗2

)

)

W–B

W–B

G

EA

107

4RUNNER (EM00T0U)

Multiplex Communication System – BEAN

)

W–B

11 1

E

B

P 7

Personal Light

5

R

41A 1A19

W

w/ Vanity Light

W

(

w/ Vanity Light

V 6

Vanity Light LH

22

(

w/ Vanity Light

)(

W

w/ Vanity Light

(

V 7

W

)

Vanity

Light RH

)

B 4(A), B 5(B), B 6(C

Body ECU

91K18 1A12 1A

R–G

6

I17

Ignition Key

Cylinder Light

2

R

BC

)
B

(
, J13

)
A

(

Junction

Connector

J12

AAAA

)

BDN BUP COM PCYL

B1910 B8B

B–L

631

B 1

Back Door Power
Window Control SW

J35

Junction Connector

R

Y–R

H

)

R

Limited

(

B–Y

EUPDOWN

HHH

RCYL

22 BA25

Y

Y

1

2

D 9

Door Courtesy Light

Front RH

R

R

R

L–R

BB1

89IP1

L–R

1

2

D11

Door Courtesy Light

Rear RH

R

9 BB11IP2

W(∗2

W(∗3

W

L–O

L–O

W–B

G–Y(∗1

G–B(∗1

R–W

W–B

W–B

W–B

G

R

22 1J61E91A

)

)

)

)

R–W

∗ 1 : w/ Daytime Running Light
∗ 2 : w/ Rear Seat Enter tainment System
∗ 3 : w/o Rear Seat Enter tainment System

E

R

E

J 6

Junction Connector

R

(

Limited

W

L–O

L–O

W–B

G–Y(∗1

G–B(∗1

R–W

R–GR–G

W–B

W–B

R–W

W–B

G

)

)

)

108

4RUNNER (EM00T0U)

B 4(A), B 5(B), B 6(C

Body ECU

)

S33

Step Light Front RH

R

(

Limited

W

L–O

L–O

W–B

G–Y(∗1

G–B(∗1

R–W

W–B

W–B

W–B

G

W–R

2

1

R

BM11BL11

)

W–R

Limited

(

)

Limited

(

)

Limited

(

)

)

)

)

W–R

Limited

(

2

)

1

S35

Step Light Rear RH

R

Limited

(

)

R

Limited

(

2BM1 BL12

)

R

Limited

(

4IO3

S32

LP

)

J20(A), J21(B

Limited

(

Junction
Connector

CB

)

W–R

Limited

(

)

W–R

Limited

(

2

)

1

Step Light Front LH

R

Limited

(

)

W–R

Limited

(

2

)

1

S34

Step Light Rear LH

R

Limited

(

)

R

Limited

(

)

R

Limited

IE1

3

)(

R

Limited

(

J 6

Junction Connector

W–R W–R

IO35

W–R

)

Limited

(

)

Limited

(

CACA

W–R

4IE1

W–R

DCYL LCYL RDEF

21 B26 A6B

)

W–G

)

Limited

BA189IA1

)(

D 8

Door Courtesy Light

Y–G

1

2

Front LH

R

R

EE

Limited

(

P–G P–G

1

2

D10

Door Courtesy Light

Rear LH

R

9 BA113 IA1

R

E

4

222

W–B

(

BAT

2

)

140A
ALT

15

23

Y–R

B–R

6

1B23

R

DEFOG Relay

R

Y–R

W

L–O

L–O

B–R

)

G–Y(∗1

)

G–B(∗1

R–W

R–GR–G

W–B

W–B

R–WR–W

W–B

G

4RUNNER (EM00T0U)

109

Multiplex Communication System – BEAN

20 1E

EED

)

81J 2

Y–R

Y–R

Y–R

A

J 7

A

Y–R

15A
TRN–HAZ

Junction Connector

8

3IH1

TSR

G–Y

G–Y

(

)(IG)(

BAT

22

)
∗1

(

B–Y

IC420

)
∗1

(

B–Y

D 2

Daytime Running Light Relay
Turn Signal Flasher Relay

6

B

TSL

7

)
∗1

(

)
∗1

(

G–B

2IH1

G–B

)

∗1

(

)

∗1

(

(∗4)

IF110

)

W

∗4

(

8

EHW

T 9

Turn Signal

Flasher Relay

TFR
24

)
∗1

(

R–Y

IN11IC442

)
∗1

(

R–Y

3

TFL

R–B

R–B

3

B 4(A), B 5(B), B 6(C

Body ECU

STPI HAZ

)

BAT

15A
IG1

Y–R

J 1

DE

Junction
Connector

Y–R

STOP LP CTRL

Relay

2

LG

J 4

E

Junction

Connector

E

10A
STOP

2

G–B

J 4

S12

Stop Light SW

Junction

Connector

G–W

G–W

2

1

G–Y

B

B

2

G–Y

22

51

4

32

2

83

141E24

1J

W

)

W

∗1

(

10

HAZ

)

∗1

(

)

∗1

(

F 5

Front Turn

F 6

Front Turn

G–B

Y–R

W

L–O

L–O

B–R

)

G–Y(∗1

)

G–B(∗1

R–W R–W

R–G

W–B

W–B

R–W

W–B

G

2

W–B

Signal Light RH

2

W–B

Signal Light LH

Y–R

W

L–O

L–O

B–R

R–G

W–B

W–B

R–W

G

110

4RUNNER (EM00T0U)

B 4(A), B 5(B), B 6(C

Body ECU

)

DRL P

7A

2

)
∗1

(

LG–R

Y–R

8IM1

2IM1

12

DRL

IG E

)
∗1

(

Y–R

FB

)

B

(

, J21

)

A

(

Junction Connector

J20

Y–R

W

L–O

L–O

B–R

R–W R–W

R–G

W–B

W–B

R–W

G

HAAH

Y–R

Junction

J 5

91

W–B

BD

AE

W–B

A

Connector

IG

)
∗1

(

)
∗1

(

A

D 2

Daytime Running Light Relay

)
B

(
, J23

)
A

(

Junction Connector

J22

Turn Signal Flasher Relay

J25

Junction Connector

Y–R

A

A

A

Y–R

6

G–BG– B

C

J35

Junction
Connector

Y–R

P 1

Park/Neutral

Position SW

G–B

C

)
B

(
, J19

)
A

(

J18

)

J 8(A

Junction
Connector

17 B

∗ 1 : w/ Daytime Running Light
∗ 4 : w/o Daytime Running Light

G–B

CB

Junction Connector

CA

D 3

G–B

EAEA

Defogger SW
Passenger Seat Belt
Warning Light
Security Indicator Light

IG+

2

Y–R

W–B

A

GND
7

B3F 3C

3FB

W–B W–B

A

J37

Junction

Connector

IK

3FB

W–B

B

1

RR

3CA

DINDDEFSW

1

BA5B

G

G–R

411

DFSW

DIND

SIND

PBEW

12

3

LG

GR–G

LG

W

L–O

G

L–O

B–R

R–G

W–B

W–B

R–W

R

W–B

4RUNNER (EM00T0U)

111

Multiplex Communication System – BEAN

B 4(A), B 5(B), B 6(C

Body ECU

10

10A
ECU–IG

1J281F8

B–R

GR–G

LG LG

W

L–O

G G

L–O

B–R

R–W

W–B

W–B

R–W

R

W–B

B–R

25

GR–G

E 3

Engine Hood

10A
SECU/HORN

34 29 10 2

6IC3

P–GW–B P–G

1

Courtesy SW

4

W–B

W–B

A

A

II

)

MPX3KSWSIG

26C14

C

(

)(IG)

BAT

BB

AE

G–Y

BA

CB

2

1

W–B G–Y

BR–YG–Y

)

B

(

, J15

)

A

(

J14

Junction

K 3

Unlock Warning SW

G–Y

BA

MPX1

HORN

5

G–R

BR–Y

BBBA

)

BR–Y

BR–B

2IN1

1K10

W–L

31231

+B2

)

J20(A

Junction
Connector

AGAGAGADAD

B–R

B–R

J24

Junction
Connector

BR–B

1

T 1

T 5

Theft Deterrent ECU

B–R B–R

Theft Deterrent

Horn

BR–B

1

SH–

)

J12(A

Junction
Connector

G–Y

KSW

B–R

3DA

3DA3EB

J18(A), J19(B

Junction
Connector

+B1IGIND EDSWH

W–R

3EB

W–R

Connector

G–R

B–R

W

B–R

L–O

L–O

B–R

R–W

R–GR–G

W–B

W–R

R–W

R

112

4RUNNER (EM00T0U)

TOUT

6

B 4(A), B 5(B), B 6(C

Body ECU

A

)

G–R

Except Limited

(

HORN
Relay

G–R

10A
HORN

1K13 1 1D

(

BAT

2

W–G

10 1E

51

32

)

2

)

P13

Power Window Motor
Front RH

LL–B

Power Window Control

SW Front RH

P 9

45 2

B

10 IP2

W

M

R–B

9IP2

L–Y

12

13

R

IP25

L–R

L–Y

C

CA AC

BB

G–R

B–R

LG

W

B–R

L–O

G G

L–O

B–R

R–W

R–G R–G

W–B

W–R

R–W

R

)
B

(
, J15

)
A

(
J14

Junction

Connector

GR–B

GR–B

11

H 9

Horn
(

High

)

H10

Horn
(

Low

)

J33

Junction
Connector

W

C

W

J 7

Junction Connector

CC

CC

W

C

W

W

W

B–R

LG

B–R

L–O

L–O

B–R

R–W

W–B

W–R

R–W

R

4RUNNER (EM00T0U)

113

Multiplex Communication System – BEAN

L–R

L–Y

J22(A), J23(B

Junction
Connector

L–R

)

L–Y

W/L 1 W/L 2

C24

L–Y

L–Y

IA27IA212

R–B

C22

L–R

BCBB

AAAAABAB

L–R

R

B 4(A), B 5(B), B 6(C

Body ECU

PD PU B B2 BWRRU RRD

15

13 6 11 718 16

R

R–B

B

IA25

W

)

D17

Door Lock Control SW Front LH
Power Window Master SW

B

IA211 IA210

BB17 BB16

G–B G–B

R–L

B

G

G

2

M

P15

1

L

L–B

3125

IA112 IA22

Power Window Motor

Rear RH

B–R

R

L–O

W

P11

4

Power Window Control
SW Rear RH

W

W

B–R

LG LG

B–R

L–O

G G

L–O

B–R

R–W

R–G R–G

W–B

W–R

R–W R–W

R R

5

BB1

W

W

W

B–R

L–O

B–R

R–W

W–B

W–R

114

4RUNNER (EM00T0U)

B 4(A), B 5(B), B 6(C

Body ECU

D17

Door Lock Control SW Front LH
Power Window Master SW

RLU RLD DD DU PLS2VCC PLS GND E UL L

12 10 9 4 17314 2 1 8 5

)

L

IA29IA26

G–W G–W

P10

4

Power Window Control
SW Rear LH

W

5 BA1

W

LG

B–R

G G

L–O

B–R

R–W

W–B

W–R

R–W

R

G

2

G–R

67 BA1

BA1

G–R

M

P14

1

L

L–B

3125

L–B

Power Window Motor

Rear LH

P12

Power Window Motor Front LH

L

W–L

W–R

SSRB PLS PLS2 EUD

M

W–G

BR–B

654321

W–B

B

B

W–BW–B

IA24

A

IG

G–W

BB

A

J 5

Junction
Connector

R–W

IA14IA15

J38

Junction
Connector

L–W

L–O

W–B

R

LG

W–B

B–R

W–B

L–O

B–R

R–W

R–GR–G

W–B

W–R

R–W

4RUNNER (EM00T0U)

115

Multiplex Communication System – BEAN

B 4(A), B 5(B), B 6(C

Body ECU

1K151K

D18

Door Lock Control SW

J 6

Junction
Connector

ADAD 5 63

L–W

L–W

L–O

L–O

L–W

L–W

L–O

DA

L–O

Front RH

R

L–O

)

Lock

Unlock

L

5IP1IP16

L–W

4IP2

W–B W–B

W–B

L2UL1L1

201519

1K3

L

IA16IA18IA213 IA28

L

D16

7

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

W–B

LSWD

21 A

A12 A10 A30

G

G

W–RW

7IA1

8

L–B

B–R

LSWPACTDUL3

B–W

L–R

B–W

41109

W–B

A

W–B

W–B

B–R

W–B

L–O

B–R

R–W

W–B

W–R

R–W

A

W–B

W–B

LG LG

W–B

B–R

W–B

G G

L–O

B–R

R–W

R–G R–G

W–B

W–R

R–W

RR

116

J37

Junction

IK

Connector

4RUNNER (EM00T0U)

B 4(A), B 5(B), B 6(C

Body ECU

)

B–W

L–R

W–B

ACT+ ACT– LSR

52423

61L1L181L9

L–B

IP17IP27IP22

BW–B

B–R

D19 D20 D21

Door Lock Detection
SW Front RH
Door Lock Motor
Front RH

L–R

B–W

417

W–B

W

BA110 BA111 BA112

W

614 614

98

W–B

11 1L1L23

L–B

L–B

Door Lock Detection
SW Rear LH
Door Lock Motor
Rear LH

ACTY

B20

10 1L1L221K151L16

L–R

L–R

W

BB110 BB111 BB112

W

9

W–BW–B

BB14BA14

L–B

L–B

Door Lock Detection
SW Rear RH
Door Lock Motor
Rear RH

L–R

L–R

R–GR–G

IC512

4

DOOR

S15

Suspension
Control ECU

R

LG LG

W–B

B–R

W–B

G G

L–O

B–R

R–W

R–G R–G

W–B

W–R

R–W

W–B

W–B

W–B

W–B

B–R

R

L–O

B–R

R–W

W–B

W–R

R–W

4RUNNER (EM00T0U)

117

Multiplex Communication System – BEAN

97

1B10 1B6

P–B

1

2

W 3

Wireless Door

Y–B

Lock Buzzer

B4B3

L–R

IE138 IE139 IE141

L–R

RDA PRG +B

E

1

W–BW–B

B 4(A), B 5(B), B 6(C

Body ECU

G–O

G–O

D 7

Door Control
Receiver

)

DD D

R

R

532

R

J 7

Junction Connector

(

)

BAT

10A
DOME

2

2

R

RR

R

22

52

LMRYPRGRDABZR2BZR

A3

(IG)

7. 5A
GAUGE

IC31IC410

1G4

RR

AAAAAA

)
B

(
, J41

)
A

BA

W–B

LG

W–B

W–B

B–R

R

G G

L–O

B–R

R–W

R–G

W–B

W–R

R–W

W–B

(
J40

Junction Connector

W–B

31

22

R–W

DOME
Relay

R

R–L

R

LG

W–B

W–B

B–R

R

L–O

B–R

R–W

R–G

W–B

W–R

W–B

W–B

118

BO

4RUNNER (EM00T0U)

B 4(A), B 5(B), B 6(C

Body ECU

)

R–L

R

LG

W–B

W–B

B–R

R

G

L–O

B–R

R–W

R–G

W–B

W–R

C12 C11 C15

V–Y

C 8(A), C 9(B), C10(C), C11(D

Combination Meter

Door

C15 C16

)

Driver' s

Seat Belt

RR

BF

AH

W–L

Speedometer

AH

R

)
B

(
, J 9

)
A

(
J 8

Junction Connector

KSWODCY2DRLP

V–G

Front Fog

18

B

LG

10 D

G

SPD

14

1G1

V–R

B

519 BC8A17

Beam

D12 D13 C13

R–W

R–G

∗ 5 : 2UZ–FE
∗ 6 : 1GR–FE

)(
∗5

BR

(

)
USA

(
Head

BRBRBR

IM17

)(
∗6

(

W–B

W–B

B–R

L–O

B–R

W–B

W–R

W–B

4RUNNER (EM00T0U)

BR

ED

EE

)
∗6

W–B

W–BW–B

)
∗5

119

Multiplex Communication System – BEAN

C 8(A), C 9(B), C10(C), C11(D

Combination Meter

Buzzer

B12

G–Y

B 4(A), B 5(B), B 6(C

Body ECU

)

B13

L–R

B4

)

GR–R

SP1

12

GR–R

IC27

S28

Skid Control ECU
with Actuator

L–R

O 3

Occupant

)
E

(
, A34

)
D

(
, A33

)
C

(
A32

Classification ECU

Airbag Sensor Assembly

5

BGND

4

2D

FSR–

PBEW

)

B16(A), (B

Buckle SW RH

A1
B1

GR

B

BI14BI11

B

E10

C2

A2(∗11
B2(∗12

L

9

BSW

FSR+FSR–

8

W

W

D1(∗7
E3(∗8

FSR+

)
)

)
)

W–B

W–B

B–R

L–O

B–R

W–B

W–R

W–B

W–B

G–Y

W–B

W–B

B–R

L–O

B–R

W–B

W–R

W–B

W–B

120

4RUNNER (EM00T0U)

)
(

)
(

G–Y

W–B

W–B

B–R

B
, J21

A
J20

DBKL

A13

G–YG–Y

BB

Junction

Connector

ADAD

)
B

(
, J 9

)
A

(

Junction Connector

J 8

BC

B15

G–Y

IE126

G–Y

D

KB

3

Buckle SW LH

4

W–B L

B 4(A), B 5(B), B 6(C

Body ECU

)
∗10

(

A

)

B

(

, J44

)

A

(

J43

Junction

Connector

)(
∗10

(

W–B

(∗9)

)(
∗10

)

B

(

BACA

, J44

)

A

(

Junction

Connector

J43

AA

)

∗9

(

G–Y

BK110

)

L

∗9

(

B

Junction Connector

J53

B

)

B–R

)

E 7(D

Engine Control
Module

)

ELS2(∗5

)

ELS1(∗6

(∗5)

D12

(∗6)

D13

Y–G

)

A1

B

(
, R22

)
A

(
R21

B1

B–R

W–B

Rear Window Defogger

Y–G

)
∗5

(

Y–GY–G

DB

IA

D

BE

)

∗6

(

BH17

BD14

)
B

(
, J32

)
A

(
J31

Y–G B

Junction

Connector

IE136

Y–G

∗ 5 : 2UZ–FE
∗ 6 : 1GR–FE
∗ 7 : w/ Side Airbag
∗ 8 : w/o Side Airbag
∗ 9 : w/ Driving Position Memory
∗10 : w/o Driving Position Memory
∗11 : w/ Power Seat (Front Passenger' s Seat
∗12 : w/o Power S eat (Front Passenger' s Seat

2

1

30A
DEFOG

22

22

IC418 IC44

Y–G Y–G

ADADA

J22(A), J23(B

Junction Connector

)

1

B–L

10A
MIR HEATER

)

)

B–L

W–B

W–B

B–R

L–O

B–R

W–B

W–R

W–B

W–B

10

BD1

W–B

BL

)

∗9

(

W–B

L–O

)
∗10

BK11

W–B W–B

W–B

(∗9)

BH13

W–B

W–R

W–B W–B

W–B

121

4RUNNER (EM00T0U)

Multiplex Communication System – BEAN

J 6

Junction Connector

BB B

Mirror Heater RH

B–L

IA11818 IP1

G–B

4

5

B–L

B–L

B–L

G–B

4

M 4

5

B 4(A), B 5(B), B 6(C

Body ECU

P 4

Mirror Heater LH

M 3

)

PKB

B2

(

)

LG

1J17

1E1

LG

1

Parking Brake SW

BAT

2

2

10A
ECU–B

BECU

11

W–R

C17

R–Y

)
B

(

BG

, J19

)
A

(
J18

Junction Connector

AG

R–Y

7

SIL

D 1

Data Link
Connector 3

W–R

12 1F

W–R

41L1B4

LOBD2
A14

GR

)
B

(

BE

, J19

)
A

(
J18

Junction Connector

AA

GRGRGR

IC46

1 EA1(∗5
3 EA2

)

(∗6)

W–B

W–B

W–B

B–R

L–O

W–B

W–R

W–B W–B

W–B

4

L

G 2

Generator

W–R

B–R

L–O

W–B

122

4RUNNER (EM00T0U)

B 4(A), B 5(B), B 6(C

Body ECU

)

WMTR RWON RWINT

GR–R

2

C10 C9

GR–R

ABAB

)
B

(
, J13

)
A

(

BB

Junction Connector

J12

GR–R

13

W 2

2

1B1

B–OLG–B

3

M

Washer Motor

4

IC33

LG–B

1

2

LG–B

BA

ACAC

D24

Diode
(

Rear Wiper

)

)
B

(
, J13

)
A

(

Junction Connector

J12

LG–B

Washer

OFF

INT

ON

Rear Wiper and

Washer SW

Washer

C14

Combination SW

12 10

BR–W

7IH1

BR–W

DCTY PCTY RLCY RRCY

12 BB1124 B23 B

R–BR–B

HB

FA

)

B

(

, J19

)

A

(

Junction Connector

J18

1111

Door Courtesy SW Front LH

D12

∗ 5 : 2UZ–FE
∗ 6 : 1GR–FE

D13

P–B

37 IE1

P–B

Door Courtesy SW Front RH

R–Y

P–L

IO36

P–L

D14

Door Courtesy SW Rear LH

D15

MPX2

A23

BR–R

40 IE1

BR–R

Door Courtesy SW Rear RH

W–B

W–R

B–R

L–O

W–B

W–B W–B

W–R

B–R

L–O

4RUNNER (EM00T0U)

123

Multiplex Communication System – BEAN

BR–R

A1A56AA4A3

L

R

BD19

Junction

Connector

J39

B

L–R

BD175BD1BD16

B–R

W–R

F

E

F

E

L–O

B10 B22 B19 B4B5

W–B

V–W

LG–R

1

2

B10

Back Door Opener SW

T10

Tailgate Control SW

B 8(A), B 9(B

Back Door ECU

LG–B

GR–R

123

)

UPDOWNEHSW–HSW+GNDBDRSIGBECUMPX2

V–Y

HALF FULL POS ACT+ ACT–

G–Y

R–G

564 12

B 7

Back Door Courtesy SW
Back Door Half Latch SW
Back Door Lock Detection SW
Back Door Lock Motor

LSE

B21

B–R

BR–W

3

14 B15 B8B7B6B

L–B

L–R

M

W–R

B–R

L–O

W–B

124

4RUNNER (EM00T0U)

B 8(A), B 9(B

Back Door ECU

)

B25B13 B11 B16B17 B23

Y–B

B11

Back Door Power Window Motor

R–B

Y–G

SSRB PLS PLS2 EGR

M

W–R

IC–IC2 IC1IC+BDUP BDDN

SGND P

B–O

L–W

321654

G–R

P–B

1

W

BR–B

Return
Position

Furthest
Position

Stop

2

R23

Rear Wiper Motor
Rear Wiper Position SW

WIP+

Y–G

WIP–

1B2B18 B 12 B 3 B

R–G

453

M

4RUNNER (EM00T0U)

125

Multiplex Communication System – BEAN

System Outline

Communication Outline

Communication is made among the body, theft deterrent and back door ECUs.
When the ECU receives a signal from related switches, i.e., the rear wiper SW, the body ECU sends signals to the back door
ECU, and moves rear wiper.
For details, please refer to the new car features and/or the repair manual.

126

4RUNNER (EM00T0U)

: Parts Location

F5

F6

G2

J43

A

H1

J44

B

H2

H3

B15

H4

A

H9

O3

B16

B

H10

P1

I20

J1

J3

S28

T1

E3

W2

F1

W3

Code See Page Code See Page Code See Page
A32 C 36 F2 34 (1GR–FE) J37 38
A33 D 36
A34 E 36

A39 36

B1 36
B4 A 36
B5 B 36
B6 C 36

B7 40
B8 A 40
B9 B 40

B10 40
B11 40

42 (*1)
43 (*2)
42 (*1)
43 (*2)
42 (*1)

43 (*2)
C8 A 37 I17 37 P4 39
C9 B 37

C10 C 37
C11 D 37

C12 37
C14 37

D1 37
D2 37 J4 38 P14 41
D3 37 J5 38 P15 41
D7 40 J6 38 R21 A 41
D8 40 J7 38 R22 B 41
D9 40 J8 A 38 R23 41

D10 40 J9 B 38 S12 39

D11 40 J10 A 38 S15 39
D12 40 J11 B 38
D13 40 J12 A 38
D14 40 J13 B 38 S32 41
D15 40 J14 A 38 S33 41
D16 40 J15 B 38 S34 41
D17 40 J18 A 38 S35 41
D18 40 J19 B 38
D19 40 J20 A 38
D20 40 J21 B 38 T5 39
D21 40 J22 A 38 T9 39
D24 37 J23 B 38 T10 41

32 (2UZ–FE) J24 38 V6 41
34 (1GR–FE) J25 38 V7 41

E7 D 37 J31 A 38

32 (2UZ–FE) J32 B 38
34 (1GR–FE) J33 38

F2 32 (2UZ–FE) J35 38

32 (2UZ–FE) J38 40
34 (1GR–FE) J39 40
32 (2UZ–FE) J40 A 40
34 (1GR–FE) J41 B 40
32 (2UZ–FE)
34 (1GR–FE)
32 (2UZ–FE)
34 (1GR–FE)
32 (2UZ–FE) J53 42 (*1)
34 (1GR–FE) K3 39
32 (2UZ–FE) L2 40
34 (1GR–FE) M3 41
32 (2UZ–FE) M4 41
34 (1GR–FE) M5 41
32 (2UZ–FE)
34 (1GR–FE)
32 (2UZ–FE)
34 (1GR–FE)

A 40 P7 41
B 40 P9 41

33 (2UZ–FE) P10 41
35 (1GR–FE) P11 41
33 (2UZ–FE) P12 41
35 (1GR–FE) P13 41

42 (*1)
43 (*2)
42 (*1)
43 (*2)

42 (*1)
43 (*2)
33 (2UZ–FE)
35 (1GR–FE)

33 (2UZ–FE)
35 (1GR–FE)

33 (2UZ–FE)
35 (1GR–FE)

33 (2UZ–FE)
35 (1GR–FE)
33 (2UZ–FE)
35 (1GR–FE)

* 1 : Power Seat * 2 : Manual Seat

127

4RUNNER (EM00T0U)

Multiplex Communication System – BEAN

:

:

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)

:

Engine No.2 Wire and Engine Room Main Wire (Under the Engine Room R/B)

46

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

46

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

47

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

BI1

Floor Wire and Seat No.1 Wire (Under the Front RH Seat)

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)

1A 24 Roof Wire and Driver Side J/B (Lower Finish Panel)
1B
1C
1D
1E
1F 24 Floor No.2 Wire and Driver Side J/B (Lower Finish Panel)

1G

1H

1J

1K

1L
3C
3D
3E
3F

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)

IA1
IA2
IC2
IC3
IC4
IC5
IE1 46 Instrument Panel Wire and Floor No.2 Wire (Left Kick Panel)
IF1 46 Instrument Panel Wire and Relay Wire (Behind the Instrument Panel J/B)
IG1 46 Instrument Panel No.2 Wire and Instrument Panel Wire (Behind the Combination Meter)
IH1 46 Instrument Panel Wire and Instrument Panel Wire (Behind the Combination Meter)

IM1 47 Engine Wire and Instrument Panel Wire (Right Side of Blower Unit)

IN1 47 Instrument Panel Wire and Engine Room Main Wire (Right Kick Panel)
IO3 47 Instrument Panel Wire and Floor Wire (Right Kick Panel)
IP1

IP2
BA1 48 Rear Door No.2 Wire and Instrument Panel Wire (Left Center Pillar)
BB1 48 Rear Door No.1 Wire and Instrument Panel Wire (Right Center Pillar)
BD1 48 Back Door No.1 Wire and Floor No.2 Wire (Left Rear Side of Roof)
BH1 48 Back Door No.1 Wire and Back Door No.2 Wire (Left Side of Back Door)

50 (*1)
51 (*2)

BK1 50 (*1) Floor No.2 Wire and Seat No.2 Wire (Under the Front LH Seat)

BL1 48 Floor No.2 Wire and Step Rear Floor LH Wire (Near the Side Step LH)

BM1 48 Floor Wire and Step Rear Floor RH Wire (Near the Side Step RH)

* 1 : Power Seat * 2 : Manual Seat

128

4RUNNER (EM00T0U)

:

Ground Points

EA

Front Right Fender

EB

Front Left Fender

EE

Code See Page Ground Points Location

44 (2UZ–FE)
45 (1GR–FE)
44 (2UZ–FE)
45 (1GR–FE)

ED 44 (2UZ–FE) Left Bank Cylinder Head

44 (2UZ–FE) Rear Side of Cylinder Block
45 (1GR–FE) Rear Side of Right Bank Cylinder Block

IG 46 Left Kick Panel

II 46 Instrument Panel Brace RH

IK 46 Right Kick Panel

BL 48 Floor Seat Crossmember LH

BO 48 Rear Pillar LH

129

4RUNNER (EM00T0U)

Headlight

BAT

2

2

)

10A
ECU–B

ACC

B 4(A), B 5(B), B 6(C

)(

7. 5A
ACC

(IG)(

W–R

10A
ECU–IG

SIG

10

ACC BECU

22 11

1B4

Body ECU

HRLY

17

1B8

W

)

HF2

C20

R–B

R–B

W

IC419

∗ 1 : w/ Daytime Running Light
∗ 2 : 2UZ–FE
∗ 3 : 1GR–FE

W

W

R–B

2

2

23

HEAD
Relay

15

2

B

Battery

R–B

130

4RUNNER (EM00T0U)

R–B

R–B

B 4(A), B 5(B), B 6(C

Body ECU

)

R–B

2

10A
HEAD
(

)

LO LH

2

2

R–Y

2212

)

1

Low

H 2

Headlight LH

(

W–B

2

22 2

R–B

)

Low

H 4

Headlight RH

(

W–B

10A
HEAD
(

LO RH

)

H 1

2

1111

10A
HEAD
(

)

HI LH

2

R–L

)

1

High

Headlight LH

(

R–GR–G

IC422

)
USA

(
Head

C13 D13

2

R–W

IC423

R–W

Beam

10A
HEAD
(

)

HI RH

2

)

1

High

H 3

Headlight RH

(

D12

)
D

(
, C11

)
C

(
C10

Combination Meter

R–G R–W

IN110

R–G

W–B

EA

W–B

(∗1)

W–B

EB

IM17

W–B

(∗1)

)

BR

ED

∗2

(

BR BR

EE

4RUNNER (EM00T0U)

R–G

R–G

R–G

R–G

)

W–B(∗1

)

W–B(∗1

)
∗3

(

131

Headlight

C12

Combination SW

OFF

Tail

Head

Light

Control SW

Auto

Low

High

Dimme r S W

Flash

LH

Turn

RH

HEAD

1C

R

1IH1

R

13 16 8

J12(A), J13(B

Junction Connector

W–B

)

HF

7C

R–W

9IH1

R–W

B 4(A), B 5(B), B 6(C

Body ECU

)
∗1

(

W–B

2

7

13

)
∗1

(

G–B

R–G

BD

)

GND1 GND2

4

16

1H2

W–B

A

Junction

Connector

J15

A

W–B

)
∗1

(

G–Y

W–B

17 1J

11E

Parking Brake SW

P 4

PKB

2B

LG LG

1

14 A

)
B

(

EB

, J19

)
A

(
J18

Junction

Connector

AA

6IC4

1 EA1
3 EA2

G 2

Generator

L

(∗2)
(∗3)

GR GR GR GR

4

L

W–B(∗1

W–B(∗1

132

R–G

R–G

R–G

AEAEAE

R–G

)

)

∗ 1 : w/ Daytime Running Light
∗ 2 : 2UZ–FE
∗ 3 : 1GR–FE

)

B

(

, J11

)

A

(

J10

Junction

Connector

R–G

AB

BB

R–G

)

G–Y(∗1

)

G–B(∗1

)

W–B(∗1

)

W–B(∗1

J 5

Junction

A

A

Connector

IG

W–B

A

(∗1)

W–B

(∗1)

4RUNNER (EM00T0U)

B 4(A), B 5(B), B 6(C

Body ECU

)

(IG)(

)
∗1

(

J 7

Junction
Connector

)
∗1

(

15A
TRN–HAZ

D 2

Turn Signal

Daytime Running

Light Relay

)
B

(
, J21

)
A

(

15A
IG1

1J8

Y–R

A

A

Y–R

J20

)

BAT

2

2

)
∗1

(

B–Y

IC420

)(
∗1

(

B–Y

6

B

Flasher Relay

19

)
∗1

Y–R

BF

Junction

Connector

HA

)
∗1

(

Y–R

)

B

(

, J23

)

A

(

J22

12

DB

Junction

Connector

EA

DRL

A7

LG–R

DRL

EIG

W–B

W–B

HAZ

8

15 1J1J14

)

∗1

(

)

)(

∗1

(

)

∗1

∗1

(

G–Y

)

∗1

(

G–Y

)
∗1

(

G–B

2IH13IH1

)
∗1

(

G–B

F 5

)
∗1

(

R–B

IC442 IN11

)
∗1

(

R–B

3

Front Turn Signal

Light LH

2

F 6

Front Turn Signal

)

W

∗1

(

10

HAZ

TFRTFLTSLTSR

2478

)
∗1

(

R–Y

)
∗1

(

R–Y

3

Light RH

2

)

W

∗1

(

2

Hazard SW

H11

3

)
∗1

(

W–B

3FB

3FB3FB

G–Y(∗1

G–B(∗1

W–B(∗1

W–B(∗1

W–B

(∗1)

)

)

)

)

)

W–B

∗1

(

W–B

)
∗1

(

J37

)
∗1

(

W–B

AA

Junction

Connector

IK II

J24

Junction

Connector

W–B

)
∗1

(

133

4RUNNER (EM00T0U)

Headlight

H1

H2

H3

H4

F5

F6

G2

:

:

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)

:

Engine No.2 Wire and Engine Room Main Wire (Under the Engine Room R/B)

System Outline

(w/ daytime running light)
∗ This system is designed to automatically activate the turn signal lights during the daytime to keep the car highly visible to

other vehicles. This system is controlled by the body ECU.
This system makes use of the turn signal lights as daytime running lights.
For this reason, when the turn signal lights are operated, the daytime running lights function is interrupted momentarily,
which, however, will be brought back into operation as soon as the interposed operation is over.

∗ This system is enabled when the conditions given below are met.
A) Ignition switch ON condition
B) Turn signal light switch OFF condition
C) Hazard light switch OFF condition
D) Light control switch OFF condition
E) Parking brake switch OFF condition (Parking brake out of operating condition)**

**: This system does not become active when the parking brake switch is ON. However, once the OFF signal of the
parking brake switch is input into the body ECU, this system will become active thereafter, regardless of whether the
parking brake switch is ON or OFF.

: Parts Location

Code See Page Code See Page Code See Page
B4 A 36
B5 B 36
B6 C 36

C10 C 37
C11 D 37

C12 37

D2 37

32 (2UZ–FE)
34 (1GR–FE) H11 37 J23 B 38
32 (2UZ–FE) J5 38 J24 38
34 (1GR–FE) J7 38 J37 38
32 (2UZ–FE) J10 A 38 P4 39
34 (1GR–FE) J11 B 38

32 (2UZ–FE) J12 A 38
34 (1GR–FE) J13 B 38
32 (2UZ–FE) J15 38
34 (1GR–FE) J18 A 38
32 (2UZ–FE) J19 B 38
34 (1GR–FE) J20 A 38
32 (2UZ–FE) J21 B 38
34 (1GR–FE) J22 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)

1B
1E
1H

1J

3F 28 Instrument Panel Wire and Center J/B (Instrument Panel Brace RH)

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)
IH1 46 Instrument Panel Wire and Instrument Panel Wire (Behind the Combination Meter)

IM1 47 Engine Wire and Instrument Panel Wire (Right Side of Blower Unit)

IN1 47 Instrument Panel Wire and Engine Room Main Wire (Right Kick Panel)

134

4RUNNER (EM00T0U)

:

Ground Points

EA

Front Right Fender

EB

Front Left Fender

EE

Code See Page Ground Points Location

44 (2UZ–FE)
45 (1GR–FE)
44 (2UZ–FE)
45 (1GR–FE)

ED 44 (2UZ–FE) Left Bank Cylinder Head

44 (2UZ–FE) Rear Side of Cylinder Block
45 (1GR–FE) Rear Side of Right Bank Cylinder Block

IG 46 Left Kick Panel

II 46 Instrument Panel Brace RH

IK 46 Right Kick Panel

135

4RUNNER (EM00T0U)

Front Fog Light

R–L

)

B 6(C

Body ECU

HRLY

17

1B8

W

W

R

C1

HEAD

HF2

C20

W

IC419

W

R–B

2

2

23

R–B

2

1

10A
HEAD
(

)

HI LH

2

2

R–L

C12

Combination SW

OFF

Tail

Head

Light

Control SW

Auto

Low

High

Dimme r S W

Flash

OFF

Fog

Light

SW

ON

G–R

IC32

G–R

11

R

G–R

IH11

W–B

RR

17

W–B

161310

136

HEAD
Relay

15

2

B

R–G

Battery

4RUNNER (EM00T0U)

R–L

G–R

(

)

BAT

15A
FR FOG

2

2

LG

R–L

22

25

W–B

J15

A

Junction

Connector

A

W–BW–B

G–R

FR FOG
Relay

13

22

G

G

2

F 1

Front Fog Light LH

1

W–B

G

G

2

F 2

Front Fog Light RH

1

W–B

G

IC312

GBRBR

D10

)

Front Fog

C13

C10(C), C11(D

Combination
Meter

A

IG

J 5

Junction
Connector

W–B

EA

4RUNNER (EM00T0U)

IM17

)

2UZ–FE

(

ED EE

BR

)

1GR–FE

(

137