8/9/2019 4runner wiring diagram

1/82

2 0 0 3 4 R

U N N E R

( E WD

5 1 4 U )

1 2 3

1 4RUNNER

2

30AAM2

2

7

ACC

IG1

IG2

ST2

AM1

8

AM2

B

R

R

Battery

1

2

I18

2

1

3

5

2 2

2 2

1 B1A

B B

B A

EB Front LeftFender

S 2 (A), S 3 (B)

D2 IC4

D

11 IM1

9

6

P

N

7. 5ASTANO. 2

1D3

1K2

B-R (2UZ- FE )B-L(*1)

W (*2)

G-B

R B- Y

Y - G

Y - G ( 2 U Z -F E )

Y ( 1 GR -F E )

W-B

W-B

B -Y

B -Y

B -Y

B -Y

B -Y

L -Y

L -Y

P

* 1 : 1GR- FE Cold Area Spec.* 2 : 1GR- FE Except Cold Area Spec.

STA Relay

J 2 ( A ) , J

3 ( B )

J35

J28

P 1

C om b i n a t i onM

e t er

< 3 1 -4 >E n gi n e

C on t r ol

M o d ul e

< 5 -1 2 > < 5 -1 4 >

< 6 -1 4 >

Pow er S ource S tarting

Ignition SW

JunctionConnector

J un c t i on C onn e c t or

JunctionConnector

P ar k / N e u t r al

P o s i t i on S W

Starter

4 EA1EA16 (2UZ-FE )

(1GR- FE )

DA

(2UZ- FE )(1GR-FE )A

B -Y

DA

4 IM2IM26 (2UZ-FE )

(1GR- FE )

G

G G

8/9/2019 4runner wiring diagram

2/82

2003 4RUNNER (EWD514U)

M OVERALL ELECTRICAL WIRING DIAGRAM

1

2

3

4

2 4 R U N N E R

2

3 0 A

A M 2

2

7

I G 2

S T 2

A M 2

6

1 2

Battery

1

4

3

2

B-R

W- B R- Y

LG

R-Y

I 1

I 1 8

1

4

3

2R-W

LG- B

R-WW-B

B-R

I 2

1

4

3

2

L- W

R-WW-B

B-R

I 3

1

4

3

2

L-Y

R-YW-B

B-R

I 4

1

4

3

2

B-L

R-WW-B

B-R

I 5

1

4

3

2

G

R-YW-B

B-R

I 6

1

4

3

2

G-W

R-YW-B

B-R

I 7

1

4

3

2

G-B

R-WW-B

B-R

I 8

B - R

B - R

B - R

W - B

W - B

W - B

W - B

W - B

W - B

R - W

R - Y

R - W

R - Y

R - W

E D

L e f t B a n k

C y l

i n d e r H e a

d

E E

R e a r S

i d e o f

R i g h t B a n k

C y l

i n d e r

B l o c

k

1 2

N 1

B- R BR

W-B

BR

E n g i n e

C o n

t r o l M o d u l e

< 5 - 1 3 > <

5 - 1 4 >

B - R

P o w e r

S o u r c e

I g n

i t i o n

( 2 U Z - F E )

W-B

Ignition Coiland Igniter No. 1

Ignition Coil andIgniter No. 2

Ignition Coil andIgniter No. 3

Ignition Coil andIgniter No. 4

Ignition Coil andIgniter No. 5

Ignition Coil andIgniter No. 6

Ignition Coil andIgniter No. 7

Ignition Coil andIgniter No. 8

I g n i

t i o n

S W

Noise Filter(Ignition No. 1 )

6 E B 1

4 E A 1

E C

R i g h t B a n k

C y l

i n d e r H e a

d

1 2

N 2

B- R BR

Noise Filter(Ignition No. 2 )

B- R B- R

B - R

B - R

B - R

B - R

B - R

8/9/2019 4runner wiring diagram

3/82

2 0 0 3 4 R

U N N E R ( E WD

5 1 4 U )

1 2 3

3 4RUNNER

2

30AAM2

2

7 IG2

ST2

AM2 6

1

2

Battery

1D6

1H4

13 I M1

1 4

3 2

B -R

W-B

W-R

Y -R

W-R

B -R

I18

1 4

3 2

P -L

W-R

W-B

B -R

1 4

3 2

L GW-R

W-B

B -R

1 4

3 2

L G-B

W-R

W-B

B -R

1

3

GR

B -R

B- R B- R B- RB-R

W- B W- B W- B

W-RW-R

EF Rear Side ofLeft BankCylinder Block

1

2N 1

B -R

W-B

B

R

Engine Control Module

B -R

B-R

P ow e r S ource Ign ition (1 G R - F E )

I 1 I 2 I 3 I 4 I 5

W- R W- R

W-B

W-B

W-B

B-R

I gni t i on C oi l an d

I gni t er N o.1

I gni t i on C oi l an d

I gni t er N o.2

I gni t i on C oi l an d

I gni t er N o. 3

I gni t i on C oi l an d

I gni t er N o.4

I gni t i on C oi l an d

I gni t er N o. 5

Ignition SW

N oi s eF i l t er

( I gni t i onN

o.1 )

8/9/2019 4runner wiring diagram

4/82

2003 4RUNNER (EWD514U)

M OVERALL ELECTRICAL WIRING DIAGRAM

1

2

3

4

4 4 R U N N E R

P o w e r

S o u r c e

C h a r g

i n g

2 7

A C C

I G 1

I G 2

S T 2

A M 1

4 6

A M 2

50A AM1 140A ALT

30A AM2

7. 5A ALT- S

15A IG1

7. 5A GAUGE

2

2

2

1 G

4

1 E

2 0

2

2

1 D

6

1 C

2

2

2

E B

A

A

A A

1 B S

4 B 2 B 1 A L I G B

D 6

I C 4

G

B

G

A

E E D D

8

D

1 5

C

B

2 2

2

2

1

1

1

1

B o d y E C U

< 7 - 3

9 >

W

W-L

R

W

W

GRGR

GRGR

R- L GR

Y-RY-RY-R

GR

W

GR

B

Y - R

W

B - R

L - Y

W - L R

W

I 1 8

J 1

J 1

G 1 ( A ) , G

2 ( B )

J 1 8 ( A ) , J 1 9 ( B )

J 8 ( A ) , J 9 ( B )

B a t t e r y

Y-R

Charge C 1 0 ( C ) , C 1 1 ( D )

C o m

b i n a

t i o n

M e t e r

G e n e r a t o r

I g n i

t i o n

S W

J u n c

t i o n

C o n n e c t o r

J u n c

t i o n

C o n n e c t o r

J u n c

t i o n

C o n n e c t o r

J u n c

t i o n

C o n n e c t o r

1 E A 1

E A 1

2

3

E A 1

E A 1

5

( * 1 )

( * 2 )

2 E A 1

E A 1

3

( * 1 )

( * 2 )

* 2 : 1 G

R - F

E

* 1 : 2 U

Z - F E

8/9/2019 4runner wiring diagram

5/82

8/9/2019 4runner wiring diagram

6/82

2003 4RUNNER (EWD514U)

M OVERALL ELECTRICAL WIRING DIAGRAM

1

2

3

4

5 4 R U N N E R

( C o n

t . n e x t p a g e

)

E n g i n e

C o n

t r o

l ( 2 U Z -

F E )

1 0 A

E C U - B

2 2 2 1

2

1 0 A

E T C S

2 2 1

2 0 A

E F I

2 2 1

7 . 5 A

O B D

2 2 1

1 4 0 A

A L T

2

2

3 0 A

A M 2

2 1

2 2 1

1 2

7

A C C

I G 1

I G 2

S T 2

A M 1

6

A M 2

1 0 A

I G N

1 D

5

W

GR

L

R

W-R

I 1 8

B

B a t t e r y

2

1 J

1 1

1 E

2 3

B

2 1

3 5

2 1

3 5

2

2

2

2

2

2

2

2

C 4 I C 4

1 0 A

E F I

N O

. 2

2 2

E B

F r o n

t L e f

t

F e n d e r

A A

N M G

A

B B

A B C D E F I

C 1 5 I C 4

C 3 I C 4

L K

I C 4

C 1 7

H

B-O

B-O

B-R

W-G

L

BB

B

GR- B

B-W

B

W- B

B

W - R G

R B - R

B - O

R - L O L

W - G

B - W G

R - B B B

L - W

W-B

O

L

W - G

J 2

E F I

R e l a y

C / O P N

R e l a y

J 4

L-W

B

I B 2 1

I C 3

1 7

L-W

L-W

L

B-O

C CJ 4

B-O

2 1

Short Pin

7 . 5 A

A C C

1 K

8

R-L

I g n i

t i o n

S W

JunctionConnector

JunctionConnector

J u n c

t i o n

C o n n e c

t o r

P o w e r

S o u r c e

1 E A 1

B - R

B-R

2 2 1

5 0 A

A M 1

7 . 5 A

G A U G E

1 D

6 1 G

4

3

2

W - L

W - G

W-G 3 E

F 3 E

F 5 I C 3 2

2

4 3

1 2 2

2

I C 3

1 6

I M 2 5

J

W - G

PPP

L

W - G

W - G

W - G

W - G

A i r C o n

d i t i o n i n g

S y s

t e m

< 3 2 - 4 >

T O Y O T A P a r k

i n g

A s s

i s t S y s

t e m

< 2 8 - 2 > R a d

i o a n

d P l a y e r

S y s t e m

< 2 8 - 2 > <

2 9 - 2 > <

3 0 - 2 >

N a v

i g a t

i o n

S y s

t e m

< 2 8 - 2 >

R e m o t e

C o n

t r o l M i r r o r

S y s t e m

< 2 4 - 3 >

L

A C C C U T

R e l a y

8/9/2019 4runner wiring diagram

7/82

2 0 0 3 4 R

U N N E R ( E WD

5 1 4 U )

5 6 7

5 4RUNNER (Cont’ d )

F

E

D

C

B

A

G

M

N

I

L

K

H

W-R

GR

B-R

B-O

R-L

O

L

W-G

B-W

GR- B

B

B

L-W

1

2

5

3

4

2 2

2 2 2

1

2

IB12

5

4

MD5 IC4

19 IM2

B -R

B -R

A B A B

A A

BORearPillarLH

BLFloor SeatCrossmember LH

J40(A), J41 (B)

9 IM2

EFRear Sideof Left BankCylinderBlock

IG Left KickPanel

E

A

16 O

O

F B

H A H A H A

C A C A

C B

G A G A G A

G B G B

S u s p en s i on

C on t r ol

E C U <1 8 - 3 >

3CC 3CC

A B

E A

3CC

3AA

3AA 3A

F A

H B

Skid ControlECU

FUELPUMPRelay

G-R

B -Y

G-R

G-R

B- R B- R

W-B

W-B

W-B

B R

W-B

B R W-B

B R

5 4 15

B-W

F 8

F14

J 5

13

J22

R -W

P -L P -L

P -L

J 1 8 ( A ) , J 1 9 ( B )

14 7R -B

R -Y

R -Y

R -Y

R -Y

R -Y

R -B

R -B

R -Y

J 1 8 ( A ) , J 1 9 ( B )

P -L

P-L

Body ECU

AirbagSensorAssembly

SuspensionControlECU

BATT

SG CG WFSE TS SIL

TC

S k i d

C on t r ol

E C U <1 5 - 8 >

P-L

A i r b a g

S en s or

A s s em b l y

<2 0 -4 >

D 1

Engine Control (2 UZ - F E )

W-B

E

C14 IC4

Data Link Connector 3

Fuel Pump

Fuel PumpResistor

JunctionConnector

JunctionConnector

J un c t i on

C onn e c t or

J un c t i on

C onn e c t or

JunctionConnector

JW-G

8/9/2019 4runner wiring diagram

8/82

2 0 0 3 4 R

U N N E R

( E WD

5 1 4 U )

9 10 11

5 4RUNNER (Cont’ d )

A

B

G

H

C

D

F

E

B

B

L-W

W-R

B-R

B-OR-L

R-Y

15 C

7 A

11 E

B A B A

B B

9 E

2

1

A

A

1 A

A

R -L

R -L

I 9

B -R

J 2 6

2

1

2 A

L

I 1 0

B -R B -R

I 1 1

W

A3

1

2 2

1

4 A

Y

I 1 2

B -R B -R

I 1 3

G

A5

1

2 2

1

3 B

R

I 1 4

B -R

A B A B

C A

1 E 2 E

2

1

C3 IE1

17 IM2

27 A

J31(A), J32 (B)

V 1 0

B B

R - G

R - G

R - G

2

1

34 A 21 E

10 BC2

A10 IE1

22 IM2

A17 IE1

16 BC2

7 IM2

A16 IE1

8 BC2

B

B

5

18 A 21 A

6

Y

31 A

4

R -B

3 C

2

R

2 C

1

G

17 C

3

B R

L -R B R O

O B R L -R

L -R B R

B R

L -R

B

2 1 3

V 819 A

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

EE

B- R B- R B- R B- R B- R B- R

R -L

R-L

M al f un c t i on

I n d i c a t or

L am p

C 8 ( A ) , C 1 0 ( C )

J 3 1 ( A ) , J 3 2 ( B )

B

B

J 8B - O

B - OB - O

R -B

B - O

C om b i n a t i on

M e t er < 3 1 -4 >

W IGSW #1 #2 #3 #4 # 5 #6

V 2

+B +B2 CCV PRG PTNK

IM218

L-W

Y -R O

L -W

J 2 6 PTNK GND VCC

VC VTA1 VTA2 M+ M-

E2T 2

VC VTA1 VTA2 M+ M- GE01

( S h i el d e d )

B-R

J28

BR

THW

BR

1

2

Engine Control (2 UZ - F E )

L -R

L -R

R -L

C om b i n a t i onM

e t er

Engine Control Module

I n j e c t or N o.1

I n j e c t or N o.2

I n j e c t or N o. 3

I n j e c t or N o.4

I n j e c t or N o. 5

I n j e c t or N o. 6

JunctionConnector

JunctionConnector

J un c t i on C onn e c t or

J un c t i on

C onn e c t or

J un c t i on

C onn e c t or

Junction Connector

Throttle Control MotorThrottle Position Sensor

Vapor Pressure Sensor

V S V

( C ani s t er

C l o s e d V al v e )

V S V

( E V A P )

EB13

8/9/2019 4runner wiring diagram

9/82

2 0 0 3 4 R

U N N E R ( E WD

5 1 4 U )

13 14 15

5 4RUNNER (Cont’ d )

33 B 22 B

1 3

2 4

BRD

A

B

W-R

R-Y

CB-O

Engine Control (2 UZ - F E )

HT2A OX2A

HT OX

+B E1

B -L

G

L -W

H 7

23 B 4 B

3 1

2 4

OX1A HT1A

OX HT

+B E1

R L G

L -W B R

H 5

25 B 21 B

1 3

2 4

HT2B OX2B

HT OX

+B E1

P W

L -W B R

H 8

29 B 5 B

3 1

2 4

OX1B HT1B

OX HT

+B E1

B G-Y

L -W B R

H 6

B R B R

EF Rear Side ofLeft BankCylinder Block

C

C

C

25 CNE+

L

24 CNE-

Y B

32 CG2-

W

C 4

C 1

BR

BR

BR

L- W

BRBR

9 AIGT1

L G

8 AIGT2

L G-B

25 AIGT3

L -W

11 AIGT4

L -Y

12 AIGT5

B -L

26 AIGT6

G

13 AIGT7

G-W

12 CSTSW

L -Y

17 ASTA

B -Y

23 CLCKI

R -Y

2 DACMG

B -Y

14 DTHWO

L -B

31 DA/CS

B R -B

GR - G

THED32 33 D

ACLD

B -R

A/C ControlAssembly

Ignition Coil and Igniters

S T A N O.2 F u s e

<1 - 3 > S T A

R el a y

<1 - 3 >

A / C L o c k

S en s or

< 3 2 - 3 >

M G C L T R el a y

< 3 2 - 3 >

( S h i el d e d )

( S h i el d e d )

( S h i el d e d )

( S h i el d e d )

( S h i el d e d )

B R

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

2 2

1 1

B R

BR

10 AIGT8

G-B

24 AIGF1

R -Y

23 AIGF2

R -W

B R

E EE

EJ28

27 CG2+

J28

C

C

C am s h af t P o s i t i on

S en s or

C r ank s h af t P

o s i t i on

S en s or

Engine Control Module

H e a t e d Ox y g en

S en s or

( B ank 1

S en s or 1 )

H e a t e d Ox y g en

S en s or

( B ank 1

S en s or 2 )

H e a t e d Ox y g en

S en s or

( B ank 2

S en s or 1 )

H e a t e d Ox y g en

S en s or

( B ank 2

S en s or 2 )

Junction Connector

JunctionConnector

8/9/2019 4runner wiring diagram

10/82

2003 4RUNNER (EWD514U)

M OVERALL ELECTRICAL WIRING DIAGRAM

1 7

1 8

1 9

2 0

5 4 R U N N E R ( C o n

t ’ d )

A B C

W - R

R - Y

B - O

E E

R e a r S

i d e o f

R i g h t B a n

k

C y l

i n d e r

B l o c

k 6 A

7 A

7 C

4 C

1 C

8 B E

F

R e a r

S i d e o f

L e f

t B a n

k

C y l

i n d e r B

l o c k

C

C C

BR

BR BR

W-B

W-B

W-B

W-B

C B

C B

B A

B A

1 D I K

R i g h

t K i c k

P a n e

l

1 5 E

2 6 D

2 7 D

1 0G-Y

W-B

4R-B

6

7

1 4

3 F

B 3 F

B

3 F

B

I I

I n s t r u m e n

t P a n e l

B r a c e

R H

A

A

A

J37

5 7 3V- W W- B

W-B

W-B

W - B

1

4

5

7

8

1 1

1 2

1 3

GR- B

P-G

LG- R

L

V C 5

C O D E

T X C T

G N D

2

9

1

I G

D

+ B

V C 5

C O D E

T X C T

A G N D

E F I O

E F I I

G N D

K S W

C T Y

I N D

J 2 4

L P G N D

T 8

E n g

i n e

I m m o

b i l i s e r

S y s

t e m

( 2 U Z -

F E )

E n g

i n e

C o n

t r o

l ( 2 U Z -

F E )

(4WD)

J26

W-B

W-B

W-B

W-B

D 3

Door Courtesy SWFront LH

Unlock Warning SW

B-O

R-Y

W-R

I M I

I M O

E 0 1

E 0 2

E 0 3

M E 0 1

E 1

4 W D

H P

E O M

1 7 D

V-R

1 B

4 1 L

4 3 E

B 3 E

B

W- R W- R

5 EB-W

1 4 ELAirbag Sensor

Assembly

4 D

W-L4WD Control ECU

1 9 D

G-YStop Light SW

1 7 EP

2 4 E

R

3 0 EW

2 5 E

B

3 1 EY

CombinationMeter

S k i d C o n t r o

l E C U

< 1 5 - 4 >

(4WD)

E 4 ( A ) , E

5 ( B )

, E 6 ( C ) , E 7 ( D ) , E 8 ( E )

W - R

L - R

J33 (A), J34 (B)

S P D

T A C H

F / P S

L 4

S T P

N E O

E N G +

E N G -

T R C +

T R C -

B-W

G A

F B

J31(A), J32 (B)

S e c u r

i t y I n d i c a

t o r L

i g h t

E n g i n e C o n

t r o l M o d u l e

T r a n s p o n

d e r K e y

A m p l

i f i e r

J u n c

t i o n

C o n n e c t o r

JunctionConnector

JunctionConnector

JunctionConnector

JunctionConnector

Transponder KeyComputer

I 1 7

8/9/2019 4runner wiring diagram

11/82

2003 4RUNNER (EWD514U)

Memo

8/9/2019 4runner wiring diagram

12/82

2003 4RUNNER (EWD514U)

M OVERALL ELECTRICAL WIRING DIAGRAM

1

2

3

4

6 4 R U N N E R

( C o n

t . n e x t p a g e

)

E n g i n e

C o n

t r o

l ( 1 G R -

F E )

10A ECU- B

2 2 2 1

2

10A ETCS

2 2 1

2 0 A

E F I

2 2 1

7. 5A OBD

2 2 1

1 4 0 A

A L T

2

2

3 0 A

A M 2

2 1

2 2 1

1 2

7

A C C

I G 1

I G 2

S T 2

A M 1

6

A M 2

1 0 A

I G N

1 H

3

1 D

6

W

GR

L

R

W-R

I 1 8

B

B a t

t e r y

2

1 J

1 1

1 E

2 3

B

2 1

3 5

2 1

3 5

2

2

2

2

2

2

2

2

C 4 I C 4

E B

F r o n

t L e f

t

F e n d e r

N M G

B B

A B C D E F I

C 1 5 I C 4

C 3 I C 4

L K

I C 4

C 1 7

H

B-O

B-O

B-R

B-R

W-G

L

B

B

GR- B

B-W

B

W-B

B

W - R G

R B - R

B - O

R - L O L

W - G

B - W G

R - B B B W

W-B

O

L

W - G

J 2

E F I

R e l a y

C / O P N

R e l a y B

I B 2 1

I M 1 4

L

B-O

C CJ 4

B-O

Short Pin

7 . 5 A

G A U G E

1 G

4

R-L

15A A/F HEATER

2 2 1

B-R

B

B

B

3 5

2 1 2

2

2

2

A / F

H E A T E R

R e l a y

B J 4

W - G

W - G

B-R

W-B

C 1 I C 4W

B

W

I g n i

t i o n

S W

JunctionConnector

J u n c

t i o n

C o n n e c t o r J u

n c t i o n

C o n n e c t o r

P o w e r

S o u r c e

50A AM1

2

2

W - L

L

7 . 5 A

A C C

1 D

5 1 K

8 3 E

F 3 E

F 5 I C 3

4 3

1 2

2

2

2

2

I C 3

1 6

I M 2 5

J

W - G

A C C

C U T

R e l a y

W - G

W - G

W - G

W - G

3

P P P

L

W-G

R a d

i o a n d

P l a y e r

S y s

t e m

< 2 8 - 2 > <

2 9 - 2 > <

3 0 - 2 >

A i r

C o n d

i t i o n

i n g

S y s

t e m

< 3 2 - 4 >

T O Y O T A P a r k i n g

A s s i s t

S y s t e m

< 2 8 - 2 > N

a v i g a t i o n

S y s t e m

< 2 8 - 2 >

R e m o t e

C o n t r o l M i r r o r

S y s

t e m

< 2 4 - 3 >

2 1

8/9/2019 4runner wiring diagram

13/82

2 0 0 3 4 R

U N N E R ( E WD

5 1 4 U )

5 6 7

6 4RUNNER (Cont’ d )

F

E

D

C

B

A

G

M

N

I

L

K

H

W-R

GR

B-R

B-O

R-L

O

L

W-G

B-W

GR- B

B

B

W

1

2

5

3

4

2 2

2 2 2

1

2

IB12

5

4

MD5 IC4

19 IM2

B -R

B -R

A B A B

A A

BORearPillarLH

BLFloor SeatCrossmember LH

J40(A), J41 (B)

9 IM2

EFRear Side ofLeft BankCylinderBlock

IG Left KickPanel

E

A

16 O

O

F B

H A H A

C A

C B

G A G A

G B G B

3CC 3CC

A B

E A

3CC

3AA

3AA 3AA

F A

H B

Skid ControlECU

FUELPUMPRelay

Y -B B -Y

Y -B

Y -B

B- R B- R

W-B

W-B

W-B

B R

W-B

B R W-B

B R

5 4 15

B-W

F 8

F14

J 5

13

J22

R -W

P -L P -L

J 1 8 ( A ) , J 1 9 ( B )

14 7

R -B

R -Y

R -Y

R -Y

R -Y

R -B

R -Y

R -Y

J 1 8 ( A ) , J 1 9 ( B )

J 2 9 ( A ) , J 3 0 ( B )

P -L P -L

Body ECU

AirbagSensorAssembly

J35

BATT

SG CG WFSE TS SIL

TC

S k i d C on t r ol

E C U

<1 5 - 8 >

P-L

A i r b a g

S en s or

A s s em b l y

<2 0 -4 >

D 1

Engine C ontrol (1 G R - F E )

W-B

E

P-L

9

B -W

TAC

CombinationMeter

C14 IC4

Data Link Connector 3

Fuel Pump

Fuel PumpResistor

Junction Connector

JunctionConnector

J un c t i on

C onn e c t or

J un c t i on

C onn e c t or

JuncCon

J un c t i on

C onn e c t or

JunctionConnector

JW-G

8/9/2019 4runner wiring diagram

14/82

2 0 0 3 4 R

U N N E R

( E WD

5 1 4 U )

9 10 11

6 4RUNNER (Cont’ d )

A

B

G

H

C

D

F

E

B

B

W

W-R

B-RB-O

R-L

R-Y

15 C

7 A

11 E

B A B A

B B

9 E

1

2

D

D

1 A

D

R -L

R -L

IM15

I 9

B -R

J 2 7

1

2

2 A

B

I 1 0

B -R B -R

I 1 1

R

A3

2

1 1

2

4 A

G

I 1 2

B -R B -R

I 1 3

Y

A5

2

1 1

2

3 B

L

I 1 4

B -R

A B A B

C A

1 E 2 E

2

1

C3 IE1

17 IM2

27 A

V 1 0

B B

R - G

R - G

R - G

1

2

34 A 21 E

10 BC2

A10 IE1

22 IM2

A17 IE1

16 BC2

7 IM2

A16 IE1

8 BC2

B

B

5

18 A 21 A

6

G-B

31 A

4

G-W

3 C

2

P

2 C

1

L

17 C

3

B R

L -R B R O

O B R L -R

L -R B R

B R

L -R

B

2 1 3

V 819 A

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

B- R B- R B- R B- R

R -L

B-L

M al f un c t i on

I n d i c a t or

L am p

C 8 ( A ) , C 1 0 ( C )

J 3 1 ( A ) , J 3 2 ( B )

B

B

J 8B - O

B - O

B - O

R -B

B - O

C om b i n a t i on

M e t er

< 3 1 -4 >

W IGSW #10 # 20 #30 #40 #50 #60

+B +B1 CCV EVP1 PTNK

G-Y

O

B

J 2 7 PTNK GND VCC

VC VTA1 VTA2 M+ M-

E2T 2

VC VTA1 VTA2 M+ M- GE01

( S h i el d e d )

B-R

BR

THW

BR

1

2

Engine C ontrol (1 G R - F E )

L -R

L -R

R -L

J 3 1 ( A ) , J 3 2 ( B ) C A

12 IM1

V 2

1

2

15 AACIS

W-L

B

V 1

B

B

B

1

2

16 C

OC1+

G-Y

B

C om b i n a t i onM

e t er

Engine Control Module

I n j e c t or N o.1

I n j e c t or N o.2

I n j e c t or N o. 3

I n j e c t or N o.4

I n j e c t or N o. 5

I n j e c t or N o. 6

JunctionConnector

J un c t i on

C onn e c t or

J un c t i on C onn e c t or

J un c t i on

C onn e c t or

J un c t i on

C onn e c t or

Throttle Control MotorThrottle Position Sensor

Vapor Pressure Sensor

V S V

( A C I S )

V S V

( C ani s t er

C l o s e d V al v e )

V S V ( E V A P )

8/9/2019 4runner wiring diagram

15/82

2 0 0 3 4 R

U N N E R ( E WD

5 1 4 U )

13 14 15

6 4RUNNER (Cont’ d )

23 B 31 B

3 4

1 2

BRD

A

B

W-R

R-Y

CB-O

Engine C ontrol (1 G R - F E )

AFL+ AFL-

AF+ AF-

HT +B

Y B R

B -W W

A 1 3

22 B 30 B

3 4

2 1

AFR+ AFR-

AF+ AF-

+B HT

P L

WR -L

A 1 2

33 B 29 B

1 3

2 4

HT2B OX2B

HT OX

+B E1

L B

B B R

H 8

21 B 25 B

3 1

2 4

OX1B HT1B

OX HT

+B E1

W G

B B R

H 6

B R B R

EERear Side ofRight BankCylinder Block

F

F

F

24 CNE-

W

25 CNE+

B

C 4

BR

BR

BR

B

BRBR

8 AIGT1

Y -R

9 AIGT2

P -L

10 AIGT3

L G

11 AIGT4

L G-B

12 AIGT5

GR

13 AIGT6

L

24 AIGF

W-R

16 ANSW

P

17 ASTA

B -Y

23 CLCKI

R -Y

2 DACMG

B -Y

14 DTHWO

L -B

31 DA/CS

B R -B

GR - G

THED32 33 D

ACLD

B -R

A/C ControlAssembly

Ignition Coil and Igniters

P ar k / N e u t r al

P o s i t i on S W <1 -2 >

S T A R

el a y

<1 - 3 >

A / C L o c k

S en s or

< 3 2 - 3 >

M G C L T R el a y

< 3 2 - 3 >

( S h i el d e d )

( S h i el d e d )

( S h i el d e d )

( S h i el d e d )

( S h i el d e d )

BR

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

1

2

BR

E

F

A

AA J 2 7

4 BHAFL

B -W

B

W

B

V 4

2

1

27 C

( S h i el d e d )

R G

VV1+

B R

BR

J28

BR

W

5 BHAFR

R -L

A i r F u el R

a t i o S en s or

( B ank 2

S en s or 1 )

A i r F u el R

a t i o S en s or

( B ank 1

S en s or 1 )

C r ank s h af t

P o s i t i on S en s or

Engine Control Module

H e a t e d Ox y g en

S en s or

( B ank 2

S en s or 2 )

H e a t e d Ox y g en

S en s or

( B ank 1

S en s or 2 )

JunctionConnector

J un c t i on

C onn e c t or

V V T

S en s or R H

12 CSTSW

L -Y

S T A N

O.2 F u s e <1 - 3 >

P

DD

9 BSTAR

P

D

J un c t i on

C onn e c t or

J 2 8

8/9/2019 4runner wiring diagram

16/82

2003 4RUNNER (EWD514U)

M OVERALL ELECTRICAL WIRING DIAGRAM

1 7

1 8

1 9

2 0

6 4 R U N N E R ( C o n

t ’ d )

A B C

W - R

R - Y

B - O

E E

R e a r S

i d e o f

R i g h t B a n k

C y l

i n d e r B

l o c k

6 B

7 B

7 C

4 C W-B

W-B

W-B

W-B

C B

C B

B A

B A

1 D I K

R i g h t K i c k

P a n e l

1 5 E

2 6 D

2 7 D

1 0G-Y

W-B

4R-B

6

7

1 4

3 F

B 3 F

B

3 F

B

I I

I n s t r u m e n

t P a n e l

B r a c e

R H

A

A

A

J37

5 7 3V- W W- B

W-B

W-B

W - B

1

4

5

7

8

1 1

1 2

1 3

GR- B

P-G

LG- R

L

V C 5

C O D E

T X C T

G N D

2

9

1

I G

D

+ B

V C 5

C O D E

T X C T

A G N D

E F I O

E F I I

G N D

K S W

C T Y

I N D

J 2 4

L P G N D

T 8

E n g

i n e

I m m o

b i l i s e r

S y s t e m

( 1 G R -

F E )

E n g

i n e

C o n

t r o

l ( 1 G R -

F E )

W-B

W-B

W-B

W-B

D 3

Door Courtesy SWFront LH

Unlock Warning SW

B-O

R-Y

W-R

I M I

I M O

E 0 4

E 0 5

E 0 3

M E 0 1

H P

E O M

1 7 D

V-R

1 B

4 1 L

4 3 E

B 3 E

B

W- R W- R

5 E

B-W

1 4 E

LAirbag SensorAssembly

4 D

W-L4WD Control ECU

1 9 D

G-YStop Light SW

1 7 E

P

2 4 ER

3 0 E

W

2 5 EB

3 1 E

Y

CombinationMeter

S k i d C o n

t r o l E C U

< 1 5 - 4 >

(4WD)

E 4 ( A )

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

W - R

L - R

J33 (A), J34 (B)

S P D

T A C H

F / P S

L 4

S T P

N E O

E N G +

E N G -

T R C +

T R C -

8 B

GRADD Actuator (4WD) 4

W D

E F A 7

6 A

W-B

W-B E 0 1

E 0 2

G A

F B

B-W

J31 (A), J32 (B)

S e c u r

i t y I n d i c a

t o r L

i g h t

E n g

i n e

C o n

t r o l M o d u l e

T r a n s p o n

d e r K e y

A m p l

i f i e r

J u n c

t i o n

C o n n e c t o r

JunctionConnector

JunctionConnector

JunctionConnector

T r a n s p o n

d e r K e y

C o m p u

t e r

2 B

K N K 2

1 B

K N K 1

2

2

G

BR

BB

BR

G

(Shielded )

(Shielded )

(Shielded )

(Shielded )

2 8 B

E K

N K

2 E D 1

5 E D 1W W

K 1

K 2

1 E D 1

6 E D 1

4 E D 1

2 0 B

E K N 2 R R

1

1

B R

Knock Sensor 2

Knock Sensor 1

B R

I 1 7

R e a r S

i d e o f

L e f t B a n k

C y l i n d e r

B l o c

k

D

8/9/2019 4runner wiring diagram

17/82

2003 4RUNNER (EWD514U)

Memo

8/9/2019 4runner wiring diagram

18/82

2003 4RUNNER (EWD514U)

M OVERALL ELECTRICAL WIRING DIAGRAM

1

2

3

4

7 4 R U N N E R

( C o n

t . n e x t p a g e

)

2

2 1

5 3

4

2

2

2

50A AM1

2

15A FR FOG

2

50A J/B

2

1 4 0 A

A L T

2

30A AM2

2

2

2 B

B a t t e r y

2

2

2

2

2

1

1R

2 1 2

2 7

A C C

I G 1

I G 2

S T 2

A M 1

4 6

A M 2

B - R

1 D

67. 5A GAUGE

1 G

4

15A TRN- HAZ

2 2 1

20A DR/LCK

2 2 1

1 2

5 3

2

2

10A ECU- B

2

10A DOME

2

2

2 2

7 . 5 A

A C C

1 D

5

1 E

9

1 B

4

1 L

4

1 F

1 2

1 2

1 1

E EJ 1

HEAD Relay

3 I G 1

2 I G 1

1 I G 1

6 C

2 1 C

4 C

1

3

4

A 3 9

1

1

1

DEFOG Relay

Y-R

R

B-R

W-B

W-L

LG

L- W

WShort Pin

2 1

2 1

Y - R

B-Y

G-W

R-B

R-B

R W - L

R-L

L - Y

W-R

I 1 8

W-G A C C

B D R 1

B E C U

G-W

W-R

W-R

W-R

W W

A B C

D

E

F

G

H

I

J

K

L

M

N

O

P

L G W - R

W - R

L - W

L - Y

Y - R

R - L

R

R R B - R

B - Y ( * 1 )

R - B

R - B

W W W - B

C L T B

C L T E

C L T S

C L T B

C L T E

C L T S

L-Y

G-W

Y

L-Y

G-W

Y

P o w e r

S o u r c e

M u

l t i p

l e x

C o m m u n

i c a t i o n

S y s t e m

B 4 ( A )

, B 5 ( B )

, B 6 ( C )

B

A u t o m a t

i c L i g h

t

C o n

t r o l S e n s o r

B o d y

E C U

I g n i

t i o n

S W

Junction Connector

(*1)

* 1 : w

/ D a y

t i m e

R u n n i n g

L i g h

t

3

W - G

8/9/2019 4runner wiring diagram

19/82

2 0 0 3 4 R

U N N E R ( E WD

5 1 4 U )

5 6 7

7 4RUNNER (Cont’ d )

1

1

2

5

3

18

1 0 A S E C

U / H OR N

1K101C11E16

T ai l l i gh t an d

I l l umi n a t i on

S y s t em

2

3 0 A P OWE R

1F2 1J25

2

1

3

5

21

1H1

4

1H2 1A7

I 2 0

23

D O OR

OF F

ON

23

D O OR

OF F

ON

1A8

W W

WW W W

1

5

1

1A12

1

2

1A18

V 6

1

2V 7

13

1A9 1A4 1A19

1E6 22 1J

1K9

2

6

C B

B A

E

E

1A1

P OWE R R

el a y

A

B

CD

EF

GH

IJ

KL

MN

OP

W-R

LG

W-RL- WL-YY-RR-LRR

B-RB-Y(*1)

R-BR-B

WW

W-B

L -WW-L

L - OL - O WL

T OWI N

GT A I L R

el a y

<2 7 - 3 >

M o onR

o of C on t r ol E C U

<2 4 -2 >

TRLY

16

TAILRelay

PWS

L W-B

W-B

GND2GND1 ILE

WW

( * 3 )

W

W-B

W

( * 3 ) R W

W

R-W

(*3)

W(*3)

R- G

R

Mu ltiplex Communicat ion System

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

W

R

R

1

L 2

Body ECU

I n t er i or L i gh t

L u g g a g e C om p ar t m en t

L i gh t P er s on al L i gh t

V ani t y L i gh t L H

V ani t y L i gh t R H

P 7 E

B

8/9/2019 4runner wiring diagram

20/82

2 0 0 3 4 R

U N N E R

( E WD

5 1 4 U )

9 10 11

7 4RUNNER (Cont’ d )

C B

C A C A

W-R

( * 2 )

W-R

( * 2 ) IO110

2

1

9 IO1

W-R

( * 2 )

R ( * 2 )

BB189 IP1

2

1

2

1

9 BB11 IP2

25 A 22 B 6 B

D 9

D 1 1

F 1 3

W-R

( * 2 ) IE1D4

2

1

D3 IE1

W-R

( * 2 )

R ( * 2 )

F 1 2

IA19

2

1

13 IA1

26 A

D 8

BA18

2

1

9 BA1

21 B

D 1 0

E EE

1

1 5 A R R W

S H

1C2

1 5 A I G1

1E20 1J8 1J28 1F8

1 0 A E C

U -I G

10 7 A

A2 IC4

A

A

12

6 1 9

D B

E A

J 2 2 ( A ) , J 2 3 ( B )

1B8

17 20 C

A1 IC4

Y

R

L -R

Y L -R

R

R

PCYL

( * 2 )

RCYL LP DCYL LCYL

R

R

R R R

W- G

P - G

Y - GP - G

R

J 2 0 ( A ) , J 2 1 ( B )

L G-R

WIG

L -Y Y -R

Y -R

B -R

B -R

SIG DRL

Y -R

Y -R W-B

B -Y

W-B

B -Y

Y -R

DRL

B IG E

W W

W

HRLY HF2

J 6

AB

C

DE

FG

HI

JK

LM

NO

PQ

RS

TU

VW

R R

(*2)R

W

R-WLG

W-LW-R

L-OW-RL-OL-YY-RR-LR

RB-RB-Y(*1)

R-BR-B

WW

W-B

Mu ltiplex Communicat ion System

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

( * 2 )

10

HAZD 2

Turn Signal andHazard Warning System

X W-B

( * 1 )

Body ECU

D a y t i m eR

unni n g

L i gh t R el a y

T ur n S i gn al

F l a s h er R el a y

D o or C o ur t e s y

L i gh t F r on t L H

D o or C o ur t e s y L i gh t

F r on t R H

D o or C o ur t e s y

L i gh t R e ar L H

D o or C o ur t e s y L i gh t

R e ar R H

F o o t L i gh t L H

F o o t L i gh t R H

J un c t i on C onn e c t or

J un c t i on

C onn e c t or

Junction Connector

F B

H A H A

J un c t i on C onn e c t or

J 2 0 ( A ) , J 2 1 ( B )

J un c t i on

C onn e c t or

J 7

Y -R

8

TSR

7

TSL

4

TFL

2

TFR

( * 1 )

( * 1 )

( * 1 ) ( * 1 )

( * 1 )

8/9/2019 4runner wiring diagram

21/82

2 0 0 3 4 R

U N N E R ( E WD

5 1 4 U )

13 14 15

7 4RUNNER (Cont’ d )

1

2

R-W

H 3

C

A

A

C

CA

BB

1413

711

A HU

D i mm

er S W

L i gh t

C on t r ol

S W

ON

Head

AUTO

Low

OFF

Tail

High

Flash

OFFF o g

L i gh t

S W

12 8

EL HFTHHLLFGBFG

IN110

J10 (A), J11 (B)

R-GB B

AB

1 IH1 8 IH1 10 IH1 9 IH1

1 C 8 C 3 C 7 C

Left KickPanel

IG

A

1

2

3

5

2 2

2

10

2

IC32G-R

B B

B A1

2

1

2

EAFront RightFender

F 1

F 2

1

D 3

RighPane

R-G

R - G

R-G

R-G

L

R-G

RG

G-OR-W

G- O GR

R G G- OR -W

HEAD TAIL A HF

G-R

FR FOGRelay

R - G

W-B

W-B

W-B

W-B

W-B

W-BW-B

W-B

LG

D

A

B

CD

EF

GH

IJ

KL

MN

OP

QR

VW

R-G

R-WW-BB-RR-WLG

W-LW-R

WL-OW-RL-OB-R

R-LRR

B-R

W-BW-B

Mu ltiplex Communicat ion System

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

D

S W-B (*1)

W-BX

J12(A), J13 (B)

A B

A B

16

W-B

R -L

W-B

W-B

AA A A

A

J 5

W-B

W-B

J 1 5 ( B )

W-B

C12

D ef o g g er S W

P a s s en g er S e a t B el t

W ar ni n gL i gh t

S e c ur i t y I n d i c a t or L i gh t

Body ECU

Combination SW

F r on t F o gL i gh t L H

F r on t F o gL i gh t R H

H e a d l i gh t R H

( H i gh )

JunctionConnector

J un c t i on C onn e c t or

Junction ConnectorJunction Connector

G

R - G

J un c t i on C onn e c t or

J 2 ( A

) , J 3 ( B )

TY-R

G G

17

U R-L

W-B

W-B

G-R

R-L

8/9/2019 4runner wiring diagram

22/82

2 0 0 3 4 R

U N N E R

( E WD

5 1 4 U )

17 18 19

7 4RUNNER (Cont’ d )

II

AA

29

2 IN1

1 T 1

1

3DA

3DA

B A B A

A A A A

B -R

14 C

J12 (A)

3EB

3EB

10 2

D A E A

B B A B31 12

G A G A

J20(A)

G A

26 C

C B 4 3 1

3EB 3DA

J24

J18 (A), J19 (B)

J 1 4 ( A ) , J 1 5 ( B )

Z 1

SH-

B R -B

B R -B

W-B

W-B

E

B -R

B -R

B- R B- R

MPX1

W-R

W-R

IG +B1 KSW

G-Y

KSWMPX3

(SR5 Grade )

B R -Y

G-Y

BR-Y

G-Y

B R -Y

G-Y(SR5 Grade )

( S R 5 Gr a d e )

KSW MPX1 IG

(SR5 Grade )W-R

B-R(SR5 Grade )

G-Y

T 5

V

ON

ML

KJ

IH

GF

E

DC

BA

W-B

R-WR-G

B-RR-W

W-RW

L-OW-RL-OB-RW-BR-LR

RB-R

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

Mu ltiplex Communicat ion System

QP W-BW-B

SR W-B

W-B

B A

Transponder Key Computer

G-Y

T LG

Body ECU

JunctionConnector Junction

Connector

J un c t i on

C onn e c t or

JunctionConnector

JunctionConnector

Theft Deterrent ECU

T h ef t D e t er r en t H or n

Option Connector(TVIP ECU )

U R

InstrumentPanel Brace RH

B B A B

G-Y

BR- Y

8/9/2019 4runner wiring diagram

23/82

2 0 0 3 4 R

U N N E R ( E WD

5 1 4 U )

21 22 23

7 4RUNNER (Cont’ d )

5BB1

22 C24 C

A A B A B A A A

B B C B J 2 2 ( A ) , J 2 3 ( B )

12 IA1 2 IA2

11 7

11 IA2 10 IA2

G-B

G

7 BB1 6 BB1

G-B

5

6 18 16

4

12 IA2 7 IA2

15 13

2 3 1

2

1

M

9 IA2 6 IA2

G-W

G-R

7 BA1 6 BA1

G-W

5

W

12

RLD

10

4

2 3 1

2

1

M

P11 P10

1 2

9 4

B

B

W

L -R L -Y

L -Y L -R

L -Y

L -R

R R -B

L -R L -Y

PD PU

W/L 1 W/L 2

SD

B

SU

RRU RRD

SD

B R -L

G

WW

U D U DSU

B

L -B L L L -B

GL

G-R

RLUB2

P 1 5 P 1 4 L - O

B -R

BW

B R

L -B

P12

D U

DDD

D17A

B

C

D

EF

GH

I

JK

LM

N

OP

QR

S

J 3 3

L-Y

L- R

W

W

R

WB

B-RR-GR-W

B-RR-W

L-OW-RL-O

W-BR-LR

B-R

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

Mu ltiplex Communicat ion System

W-BW-B

UT

W-BW-B

WV

LGX

Body ECU

Door Lock Control SW Front LHPower Window Master SW

J un c t i on C onn e c t or

J un c t i on C onn e c t or

Power Window ControlSW Rear LH

Power Window ControlSW Rear RH

Power Win

P ow er Wi n d owM

o t or

R e ar L H

P ow er Wi n d owM

o t or

R e ar R H

Y R

C

C

C

8/9/2019 4runner wiring diagram

24/82

2 0 0 3 4 R

U N N E R

( E WD

5 1 4 U )

25 26 27

7 4RUNNER (Cont’ d )

W-B

W-B

W-B

B -WB

L -R L -B

LULLSSR

EE

LLSSRULULL

ACT-ACT+LSWPLSWDACTDUL3L2

L- R B -W

B -W

L -B W-R

G

B -R

B -WWB -R

GL

W-B

D18

UL1L1

W-B

L -W

L- O

W-B

W-B

W-B

L R

L - O

L - OL -W

L - OL -W

L -W

D198

2423

417

A30

9 1L 6 1L18 1L

IP22IP27IP17

D16

L

9

7

A21A10A12

48110

IA28IA17IA213IA18IA16

20

3 1K

365

IP24

IP156 IP1

J 6

DA

1 1K5 1K

1519

DADA

CD

EF

GH

IJ

KL

MN

O

A

BL-O

W-BW-B

R-GR-W

B-RR-W

W-RL-O

W-BR-LR

RB-R

Mu ltiplex Communicat ion System

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

PQ

R

W-BW-B

W-B

S LG

L o c k

U nl o c k

Body ECU

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

Door Lock DetectionSW Front RHDoor Lock MotorFront RH

Door Lock ControlSW Front RH

JunctionConnector

T R

8/9/2019 4runner wiring diagram

25/82

2 0 0 3 4 R

U N N E R ( E WD

5 1 4 U )

29 30 31

7 4RUNNER (Cont’ d )

R -Y

R -B R -B

R -B

PCTYDCTY

DOMERelay

LMRY

R

R

R

R -W

R

R

R

R

R

R

R

W-B

W-B

W-B

W-B

R G- O

W-B

G- O

L -R

E

+BPRGRDA

PRGRDABZR2BZR

Y -B

Y -B

P -B

L -R

B24

D 1 3 1D 1 2

J 1 8 ( A ) , J 1 9 ( B )

T r an s p on d er K e y

C om p u t er

< 5 -2 0 > < 6 -2 0 >

1

AA A A

BA

B23

J 7

D 7

J 4 0 ( A ) , J 4 1 ( B )

Rear PillarLH

BO

AA

BH

AFAF

W-B

Floor SearCrossmember LH

BL

A3

IC31IC4C2

D

D

D

22

22

5

3

2

1

B3B4

1

532

IE1A15IE1A13IE1A12

79

W 3

2

1

6 1B10 1B

AB

C

DE

FG

HI

JK

LM

R-WR-GW-B

B-RR-W

W-RL-OW-BW-BR-LRR

B-R

Mu ltiplex Communicat ion System

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

R - G

S u s p en s i on C on t r ol

E C U

B20ACTY

N LG

Body ECU

D o or C on t r ol

R e c ei v er D o or C o ur t e s y S WF r on t L H

D o or C o ur t e s y S WF r on t R H

J un c t i on C onn e c t or

Junction Connector

J un c t i on

C onn e c t or

Wi r el e s s D

o or

L o c k B

uz z er

O R

8/9/2019 4runner wiring diagram

26/82

2 0 0 3 4 R

U N N E R

( E WD

5 1 4 U )

33 34 35

7 4RUNNER (Cont’ d )

R

RDEFDBKL

J20(A), J21 (B)

W-B

G-Y

G-Y

G-Y

G-Y

W-B

B R

G-Y

R

R B R

GR -B

G-Y

GR- B

BR

R

C 8 ( A ) , C 9 ( B ) , C 1 0 ( C )

W-B

W-B

6

3 1B

IE1A8

J 8 ( A ) , J 9 ( B )

A13

AD

B B

D A

BH

AF

BM Floor SeatCrossmember RH

IO111IM17

J 8 ( A ) , J 9 ( B )

C15

C16

C13

B13

B12

A13

A14

A17

C8

B19

A

B

C

D

E

F

G

H

IJ

KL

M

NO

PQ

W-B

V-Y

V-G

W-L

R-L

R-W

R-G

B-R

RW-RL-OW-BW-B

RB-RW-BW-B

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

Mu ltiplex Communicat ion System

B R GR -B

B18

R LG

L G

Door

Beam

Driver’ s Seat Belt

4

3

2

3

B 1 2

B 1 3

Body ECU

B u c k l e S WL H

B u c k l e S W

R H

O c c u p an t D e t e c t i on

S en s or

C om b i n a t i onM

e t er

Junction Connector

J un c t i on

C onn e c t or

J un c t i on

C onn e c t or

F B

H A H A

S R

R

Rear Side ofLeft BankCylinder Block

EF

B uz z er

8/9/2019 4runner wiring diagram

27/82

2 0 0 3 4 R

U N N E R ( E WD

5 1 4 U )

37 38 39

7 4RUNNER (Cont’ d )

B-L

Y - G

BR-R

G-B

R -Y

L GL GL G

L G

MPX2HAZSTP1SPDLPOBD2PKBRWINTRWONWMTR

BR-W

B R -W

GR

B - O

L G-B

GR -R

L G-B

W-B

W-B

GR -R

W-B

G-B

B -L

G-B

B -L

DEF

Y - G

IE1A14

A23

T ur n S i gn al F l a s h er

R el a y < 8 - 3 > < 9 - 3 >

S T OP L P

C T R L R

el a y

C om b i n a t i onM

e t er

< 3 1 - 6 >

G en er a t or

P ar k / N e u t r al

P o s i t i on S W

<1 4 - 8 >

D a t aL i nk

C onn e c t or 3

< 5 -7 > < 6 -7 >

8314A14B17C17

P 4

R a d i o an d P l a y er

wi t h D i s pl a y <2 8 - 6 >

S k i d C on t r ol E C U

<1 5 - 8 >

20 1J18 1J

1

1 1E

17 1J

B2

C14

W2

M

3

4

1 1B

C9C102

IH17IH16IC33

WR EW C1R+1R

Washer

OFF

1312 10

2

Washer

ON

INT

J 6

M4

M 3

B

BB

4

5

4

5

IP118IA118

A27

( 2 U Z -F E )

W-B

B -L

( 2 U Z -F E )

A

BC

D

EF

GH

I

W-R

B-R

W-B

L-OW-BW-B

Mu ltiplex Communicat ion System

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

CombinationSW

Junction Connector

P ar k i n gB r ak e

S W

Mi r r or H

e a t er L H

Mi r r or H

e a t er R H

W a s h er M o t or

R e ar Wi p er

an d

W a s h er S W

8/9/2019 4runner wiring diagram

28/82

2003 4RUNNER (EWD514U)

M OVERALL ELECTRICAL WIRING DIAGRAM

4 1

4 2

4 3

4 4

7 4 R U N N E R ( C o n

t ’ d )

A C T -

A C T +

P O S

F U L L

H A L F

B-R

L-R

L- B

BR- W

G-Y

R-G

L-W

W-R

B-O

Y-G

Y-B

R-B

V-W

V-Y

GR- R

LG- B

LG- R

E

P L S

P L S 2

S S R B

G

R

I C -

I C 2

I C 1

I C +

B D D N

B D U P

H S W -

H S W +

U P

D O W N

E

3

2

1

B

2 1

1 4

B

B

1 5

B 7

4

6

5

B 8

7 B

6 B

3

2

6

B

2 3

1 7 B

B

1 6

B 1 1

1

5

4

B

1 1

2 5 B

B

B

2 2

B

1 0

T 1 0

1

2

3

B 5

4 B

B

1 9

1 3

L S E

B 8 ( A ) , B 9 ( B )

M u l t

i p l e x

C o m m u n

i c a

t i o n

S y s t e m

2 1

B10

M

F u r t h e s

t

P o s i

t i o n

R e t u r n

P o s i

t i o n

S t o p

1

3

5

4

2

W I P - R-G

1 B

B 2

Y-G W I P +

WBR- B

3 B

B

1 2

P-B P

S G N D G-R

1 8 B

R 2 3

B a c k

D o o r

E C U

B a c

k D o o r

C o u r t e s y

S W

B a c

k D o o r

H a l

f L a t c h

S W

B a c

k D o o r

L o c k

D e t e c t

i o n

S W

B a c

k D o o r

L o c k

M o t o r

Back Door Opener SW

B a c

k D o o r P o w e r

W i n d o w

M o t o r

R e a r W

i p e r

M o t o r

R e a r W

i p e r

P o s i t i o n

S W

T a i l g a t e

C o n

t r o l S W

M

8/9/2019 4runner wiring diagram

29/82

2003 4RUNNER (EWD514U)

Memo

8/9/2019 4runner wiring diagram

30/82

2003 4RUNNER (EWD514U)

M OVERALL ELECTRICAL WIRING DIAGRAM

1

2

3

4

8 4 R U N N E R

2

2

2

2

2

140A ALT

15A TRN- HAZ

50A AM1

1

1 1

2

2 2

2

A C C

I G 1

A M 1

4

1 C 2

1 5 A

I G 1

1 J 8

A A H A

F B

A 1 6 I C 4

1 I N 1

2 3

2 3

E B

F r o n

t L e f

t

F e n d e r

E A

F r o n

t R i g h t

F e n d e r

L H R H

T L

T B 2

1

3 T R

Turn

2 I H 1

3 I H 1

A

D B

E A

I G

L e f t K i c k

P a n e l

1 J

1 4 1 J

1 5 3 2 3

F

B 3 F

B

B 3 F

A

A

I K

R i g h t K i c k

P a n e l

I I

I n s t r u m e n

t

P a n e l

B r a c e

R H

1

4

2

9

7

8

1 0

A

A

6

1 G

3

1 G

2

1 J

2 3

1 J

5

A 2 I C 4

1 F

9

1 F

1 5

6 2

6 3

A A

A A

A B

A A B

L

F l o o r S e a

t

C r o s s m e m

b e r L

H

B O R e a r P

i l l a r

L H

I G

T F L

T F R

E

T S L

T S R

H A Z

T R L

T R R

5

3

A

D

2

1

A

D

D A Turn

Turn

R14

R15J39

H11

C12

F 5

J20 (A), J21 (B)J 7

J22(A), J23 (B)

J15

D 2

J 2 4

J 3 7

J 5

A

J 4 0 ( A ) , J 4 1 ( B )

O 2

W-B

W-B

W-B

W-B

W-B

W-B

W-B

W-B

L- B

L- Y

L-B

L-Y

L-Y

L-B

G-B

G-Y

G-B

G-Y

L-B

L-Y

W

R-Y

R-B

Y-R

Y-RY- R Y- RL- Y

W-L

B-YB-Y

B-Y

W- B W- B

W-B

W-BW

L- Y

L- B

W-B

W-B

F 6

I 1 8

B

B

B a t

t e r y

B

R-B

R-Y

Towing ConverterRelay

W - B

T u r n

S i g n a

l a n

d H a z a r d

W a r n

i n g

( w / D a y

t i m e

R u n n

i n g

L i g h t )

P o w e r

S o u r c e

1 2 D

R L Multiplex Communication

System

W - B

C B

A A

W-B

J10(A), J11 (B)

W-B 5

W-B

B o d y E C U

< 7 - 3

9 >

T U R N R

T U R N L

G N D

Combination SW

T u r n

S i g n a

l

I n d i c a

t o r

L i g h

t

D a y

t i m e

R u n n i n g

L i g h

t R e l a y

T u r n

S i g n a

l F l a s h e r

R e l a y

Front Turn SignalLight LH

Front Turn SignalLight RH

Hazard SW

I g n i

t i o n

S W

J u n c

t i o n

C o n n e c t o r

JunctionConnector

JunctionConnector

JunctionConnector

JunctionConnector

JunctionConnector

J u n c

t i o n

C o n n e c t o r

J u n c

t i o n

C o n n e c t o r

JunctionConnector

J u n c

t i o n

C o n n e c t o r

Rear CombinationLight LH

Rear CombinationLight RH

A

A

A

8/9/2019 4runner wiring diagram

31/82

2 0 0 3 4 R

U N N E R ( E WD

5 1 4 U )

1 2 3

9 4RUNNER

2 2 2

2 2

1 4 0 A A L T

1 5 A T R N -H A Z

5 0 A A M1

1 1

1

2 2

2

2

ACC

IG1AM1 4

1C2

15AIG1

1J8

A

A

H A

F B

A16 IC4 1 IN1

2

1

2

1

EBFront LeftFender

EA Front RightFender

LH

RH

TL TB

2

1 3

TR

T ur n

2 IH1 3 IH1

A

D B

E A

IGLeft KickPanel

1J14

1J15

3

2

3FB

3FB

B3F

A A

IKRight KickPanel

II InstrumentPanel BraceRH

1 3 2 7 5 6 8

A A

4

1J23

A2 IC4

1F9

6

2

A A

IG LL LR GND EL ER EHW

A

AD

A

T ur n

H 1 1

C 1 2

F 5

J 2 0 ( A ) , J 2 1 ( B )

J 7

J 2 2 ( A ) , J 2 3 ( B )

J 1 5

T 9

J24J37

J 5

A

J40 (A), J

W-B

W-B

W-B

W-B

W-B

L -B

L -B G-B

G-Y

G-B

G-Y

L -B W

R -Y

R -B

Y -R

Y -R

Y -R

Y -R

L -Y

W-L

B -Y

B -Y

W-B

W-B

W-B

W-B

W

L -Y L -B

W-B

W-B

F 6

I18

BB

Battery

+B

R -B R -Y

T owi n g

C onv er t er

R el a y <2 7 -4 >

W-B

Turn Signal and Hazard Warning (w/o Daytime Running LPower Source

W-B

W-B

Body ECU

5 IF110 IF18 IF17 IF19 IF12 IF14 IF11 IF1

6 IF1

B-Y

Y -R

L -B L -Y

W-B

G-B

G-Y

W L -B

L -B L -Y

W-B

G-B

G-Y

W

C om b i n a t i on S WF r on t T ur n

S i gn al L i gh t L H

F r on t T ur n S i gn al L i gh t R H

Turn Signal Flasher Relay

H az ar d S W

Ignition SW

JunctionConnector

J un c t i on

C onn e c t or

J un c t i on

C onn e c t or

J un c t i on

C onn e c t or

J un c t i on

C onn e c t or

JunctionConnector

JunctionConnector

Junction C

A

A A

8/9/2019 4runner wiring diagram

32/82

2003 4RUNNER (EWD514U)

M OVERALL ELECTRICAL WIRING DIAGRAM

1

2

3

4

1 0 4 R U N N E R

( C o n

t . n e x t p a g e

)

B A

B B

B A

B A

B A

B B

B B

B B

2 1

2 1

2 1

A B

A B

A A

A A

A B

D 4

M 2

T 7

2

1 4 0 A

A L T

J16(A), J17 (B)

A A

E B

O F F T a

i l

H e a

d

T

E L

H

1 6

1 4

A B

A A

I G

L e f t K i c k

P a n e

l

A

T A I L

C12

8 C

J 5

8 I H 1

J20(A), J21 (B)

J16 (A), J17 (B)

1G

G

G

G

W-G

W-G

W-G

G H

T a

i l l i g h t a n

d I l l u m

i n a

t i o n

P o w e r

S o u r c e

D

G

G G

W-B

W-B

W - B

G W - G

W - B

W-G

G

G

F

W - G

E

G

B

2 2

50A AM1

2

2

1

1

1 2

2

2

2 1

3 5

1 C

1

G I D L

2 8 A

B 4(A), B 6(C)

30A AM2

1 L

5

1 F

1 3

10A DOME

TAIL Relay

L - Y

1 B

9

1 B

1 1

J14 (A), J15 (B)

2 1

2 1

E B

F r o n

t L e f

t

F e n d e r

E A

F r o n

t R i g h t

F e n d e r

B 6 4

6 4

A A

A A

A A

2 B D 1

2 B H 1

3 B H 1

1 0 B D 1

F 4

F 3

R14

R15

J 4 0 ( A ) , J 4 1 ( B )

A B

A A

B L

F l o o r S e a

t

C r o s s m e m

b e r L

H

B O

R e a r P

i l l a r

L H

W-B

W-B

W-B

W-BW-B

W-B

W-B

W-B

W-BW-BW-BGG

G

G

W-B

W-B

G

G

B

B

B BW-L

R

G

G

G

L - W

J 3 9

G

B a t t e r y

T R L Y

1 8

(2UZ- FE )

( 2 U Z - F E )

(2UZ- FE )

Tail

Tail

50A J/B

2 1 2

L-W

2 7

A C C

I G 1

I G 2

S T 2

A M 1

4 6

A M 2

L - Y

B - R

B - R

C

I 1 8

2

10A TAIL

2 2 1 2 2 1

Short PinW

R

A

C 2 I C 4 RR

B

4 3

B10

LH

RH

License Plate Light

Body ECU

Diff. Lock SW

Combination SW

Front Parking Light LH

Front Parking Light RH

I g n i

t i o n

S W

J u n c t

i o n

C o n n e c t o r

JunctionConnector

JunctionConnector

JunctionConnector

JunctionConnector

J u n c

t i o n

C o n n e c t o r

J u n c

t i o n

C o n n e c t o r

Main SW

Rear Combination Light LH

Rear Combination Light RH

TRAC Off SW

Radio and Player System 1 0

C13Combination SW

A B

8/9/2019 4runner wiring diagram

33/82

2 0 0 3 4 R

U N N E R ( E WD

5 1 4 U )

5 6 7

10 4RUNNER (Cont’ d )

W- G

5

6

W- G

S 4

G G

5

6 S 5

G

GD

5

4

4

2

E

H 1 1

G G

W- G

W- G

G G

W-G

BL-Y

Taillight and Illumination

G

W-GG

( * 1 )

( * 1 ) ( * 2 )

G G

W- G

W- G

( * 5 ) ( * 5 )

( * 5 ) ( * 5 )

D

W-G

HW-B

G

( 1 GR -F E )

F

3DD

3DD 3DD

D 3D

3D

3FA

3FA 3FA 3FA 3FA 3FA

3FA

1

2

2

1

W- G

2

1

2

1

12

W- G

W-G

G

G

G

B10

C5

H 1 2 A 2 3

D 5

C 1 5

G

G

G

A12

2 A (*3)

2 R 1 ( A ) ,R 2 ( B ) ,R

3 ( C )

R 1 2

(*4)

(*3)

(*4)

G

W- G

W- G

G

W- G

C 3E

C 3E

9

10

D A

I B

( * 2 )

3DD

G

( 1 GR -F E )

E n gi n e C on t r ol

M o d ul e < 6 -1 2 >

G

D3D

G

J 3 1 ( A ) , J 3 2 ( B )

D 3

CB-R

AR

3FA 3FA

ILL-

ILL+ A b s or b er C on t r ol S W

D ef o g g er S W

H e a t er C on t r ol P an el

C u pH

ol d er I l l umi n a t i on

D ownh i l l A

s s i s t C on t r ol S W

H az ar d S W

H ei gh t C on t r ol S W

J un c t i on

C onn e c t or

R a d i o an d P l a y er

R a d i o an d P l a y er wi t h D i s pl a y

S e a t H e a t er S WL H

S e a t H e a t er S WR H

ILL+

ILL-

ILL+

ILL-

D 3D

8/9/2019 4runner wiring diagram

34/82

8/9/2019 4runner wiring diagram

35/82

2 0 0 3 4 R

U N N E R ( E WD

5 1 4 U )

1 2 3

11 4RUNNER

2

2

1 4 0 A A L T

1

5 0 A A M1

1

2

2

2

2

ACC

IG1AM1 4

I18

B

Battery

2

1

2

2

1

2

E

E

3

5

2

1

4

2 2

2 2 2

15AIG1

1C2

1E20

E

E

15 IC3

1J12

1F16

C A C A

A B3CB3CB

3CB 3CB

E B

H A 1E24

C B C B

B A B A

6

1

6

1

A A A A

A B

BLFloor SeatCrossmember LH

B o d y E

C U

<7 - 3 9 >

D D

E

T owi n g

C onv er t er

R el a y

E n gi n e

C on t r ol

M o d ul e

< 5 -1 7 > < 6 -1 7 >

S k i d C on t r ol E C U

<1 5 - 8 >

T owi n gB r ak e

C on t r ol l er

<2 7 - 3 >

S k i d

C on t r ol E C U

<1 5 - 8 >

S k i d

C on t r ol E C U

<1 5 -7 >

S u s p en s i on

C on t r ol E C U

S h i f t L o c k C on t r ol E C U

< 3 0 -7 >

B R -Y

( * 3 )

G-Y

( * 4 )

G-Y G

-Y G-Y

G-B

L G

G-Y

G-Y

G-Y

G-Y

G-Y

G-W

G-Y

G-B

G-Y

W-B

W-B

W-B

G-Y

G-Y

G-Y

G-Y

B

W-L

G-W

G-B

G-Y

L-Y

J 4

G-Y

G-Y

Y -R

Y -R

Y-R

E

G-W

1 0 A S T OP

S 1 2 J 3 1 ( A ) , J 3 2 ( B )

J 1

J40(A), J41 (B)

R 1 4

J 2 2 ( A ) , J 2 3 ( B )

S T OP L P

C T R L

R el a y

Stop LightPower Source

S t o p

S t o p

Ignition SW

J un c t i on

C onn e c t or

J un c t i on

C onn e c t or

Junction Connector

J un c t i on

C onn e c t or

JunctionConnector

R e ar C om b i n a t i on

L i gh t L H

R e ar C om bin a ti on

L i gh t R H

S t o pL i gh t S W

8/9/2019 4runner wiring diagram

36/82

2003 4RUNNER (EWD514U)

M OVERALL ELECTRICAL WIRING DIAGRAM

1

2

3

4

1 2 4 R U N N E R 1 4 0

A

A L T

5 0 A

A M 1

2

2

2 2

2

A C C

I G 1

A M 1

4

1 C

2 1 J

8

1 5 A

I G 1

A A

A A 2 I M 1

3 2

1 L

2

1 F

1 0

6 3

1 I M 1

6 2

B

B

C

A

C A

C A

A

A

A A

A B

A A

B L

F l o o r

S e a

t

C r o s s m e m

b e r

L H

R e a r P

i l l a r

L H

Back-Up

Back-UpW-B

W-B

W-B

W-BR-Y

R-Y

R-Y

R-YR-Y

R- Y Y- R Y- R

Y-RY-R

W-L

B

B

Battery

J 7

J 2 0

J 2 5

P 1

J 3 3

I 1 8

J 4 0 ( A )

, J 4 1 ( B ) J 4

0 ( A ) , J 4 1 ( B )

R14

R15

2 2 1 1

L - Y

R - Y

Y - R

B a c

k - U p

L i g h t

P o w e r

S o u r c e

Trailer Socket

I g n i

t i o n

S W

J u n c

t i o n

C o n n e c t o r

J u n c

t i o n

C o n n e c t o r

J u n c

t i o n

C o n n e c t o r

J u n c

t i o n

C o n n e c t o r

J u n c

t i o n

C o n n e c t o r

J u n c

t i o n

C o n n e c t o r

P a r k

/ N e u

t r a l

P o s i

t i o n

S W

Rear CombinationLight LH

Rear CombinationLight RH

H H

A A

B O

8/9/2019 4runner wiring diagram

37/82

8/9/2019 4runner wiring diagram

38/82

2003 4RUNNER (EWD514U)

M OVERALL ELECTRICAL WIRING DIAGRAM

1

2

3

4

1 3 4 R U N N E R

( C o n

t . n e x t p a g e

)

5 0 A

A M 1

2 2 1 1 2 2

3 0 A

A M 2

2

2 2 1

1 0 A

E T C S

2 0 A

E F I

2

2

2

1

1

2

2

2 7

A C C

I G 1

I G 2

S T 2

A M 1

4 6

A M 2

2 1

3 5 2

2

2

2

C 1 7 I C 4

C 4 I C 4

C 5 I C 4

E B

F r o n

t L e f

t

F e n d e r

A B

A B

C A

C 3 I C 4 8

E

3 E

6 D

1 E

2 E

1 1 B 8

GR

1 0 B

1 5W-L

1 5 B 7

P-L

1 3 B

1 4LG- B

1 2 B

6L-R

1 6

C

1 3

R-B

1 5 C 5

R-W

1 9 B

1 2G-B

1 8 B

4B-Y

1 7 B

1 1B-W

1 6 B

3B-R

3 2 B

1 0Y-G

2 4 B 9

L

2 8 A

S 1

S 2

S R

S L T +

S L T -

S L U +

S L U -

S L 1 +

S L 1 -

S L 2 +

S L 2 -

O T +

O T 2 +

1 0 A

I G N

1 D

6 1 J

1 1

B A

B B

9 E

1 2 2 7 B

3 5 B

1 2 2 6 B

3 4 B

E l e c t r o n

i c a

l l y C o n

t r o

l l e d T r a n s m

i s s

i o n a n

d A / T I n d i c a

t o r

( 2 U Z -

F E )

B

W- L B

R

GR

L

B

W- B

B

B

B

B

W-B

B

L - Y

B - R

B a t t e r y

I 1 8

E F I

R e l a y B B

J 2

W-G

L

GR

W - G L

GR

B-O

J31(A), J32 (B)

B-O

V11

T 4

L-Y

R-L

Y-R

W-R

O T -

O T 2 -

BR

BR

BR

E 1

M R E L

B A T T

+ B M

I G S W

N T +

N T -

S P 2 +

S P 2 -

+ B

+ B 2

S 1

S 2

S R

S L T +

S L T -

S L U +

S L U -

S L 1 +

S L 1 -

S L 2 +

S L 2 -

T H 0 1

T H 0 2

E 2 L

- Y

B - R

E 4 ( A )

, E 5 ( B )

, E 6 ( C ) , E 7 ( D ) , E 8 ( E )

2

1

P o w e r

S o u r c e

7 . 5 A

G A U G E

1 G

4

R - L

R - L

C

J 8 ( A )

B - O

B A

B A

A

R

J31 (A), J32 (B)

2 1 2

Short Pin

2 1 2R

140A ALT

10A DOME

2 W

C 2 I C 4R

D DR

F B

H A

J 7J 8 (A), J 9 (B) R

W

B

SB

G

GR

LG

BR

R

L

Y

V

O

Y

O

Y

E l e c

t r o n i c a

l l y C o n t r o

l l e d T r a n s m

i s s i o n

S o l e n o

i d

E n g i n e

C o n

t r o l M o d u l e

I g n i

t i o n

S W

J u n c

t i o n

C o n n e c t o r

JunctionConnector

JunctionConnector

JunctionConnector

JunctionConnector

J u n c

t i o n

C o n n e c t o r

T u r b

i n e

S p e e

d

S e n s o r

Vehicle Speed Sensor(Electronically Controlled Transmission )

8/9/2019 4runner wiring diagram

39/82

2 0 0 3 4 R

U N N E R ( E WD

5 1 4 U )

5 6 7

13 4RUNNER (Cont’ d )

AR

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

Electronically Controlled Transmission and A/T Indicator (2 U Z- F E )

16 A

NSW

9 B

STAR

12 C

STSW

17 A

STA

20 E

TC

18 E

SIL

19 E

WFSE

18 A

VC

21 A

VTA1

31 A

VTA2

3 C

M+

2 C

M-

17 C

GE01

19 A

THW

30 A

VG

29 A

E2