overall electrical wiring diagram (from april 2003)gxewd.pdf2003 lexus gx 470 (ewd519u) overall...

2003 LEXUS GX 470 (EWD519U)

OVERALL ELECTRICAL WIRING DIAGRAM (From April 2003)

12

34

1 G

X 4

70( C

ont.

nex

t pa

ge)

50A AM1

2

50A J/B

2

140A

ALT

2

30A AM2

2 22

B

Batte

ry

22 2

2

11

W–R

2

12

2 7

AC

C

IG1

IG2

ST2

AM1

3 4 6AM

2

B–R

ID6

7. 5A GAUGE

IG4

25A DR/LCK2

2 112

53

22

10A ECU–B

2

10A DOME

22

22

7. 5

AAC

C

ID5

IE9

IB4

IL4

1211

HEAD Relay

11

W–L

L–W

W–L

SHORT PIN

2 1

2 1

G–W

R–B

W–R

W–L

R–L

L–Y

W–G

W–R

I18

AC

CB

DR

1B

ECU

G–W

W–R

W–R

W

B

DE F

G IJ K

W–R

L–W

L–Y

R–L

R–Y

R–B

R–B W

Po

we

r S

ou

rce

Mu

ltip

lex

Co

mm

un

ica

tio

n S

ys

tem

B 3

( A) ,

B 4

( B) ,

B 5

( C)

W

R–B

2

2 1

2

W–G

W–L

AP

P

10AECU–B NO. 2

20A D FR P/W

2

2 1

HL–

B

L–BC

R

R

R

R

Bod

y E

CU

Igni

tion

SW

W–L

3A 21

53

1IP

3 22

22

R

L–YL–Y

R

R–Y

LMR

Y

DO

ME

Rel

ay


OVERALL ELECTRICAL WIRING DIAGRAM (From April 2003)

56

78

1 G

X 4

70 (

Con

t’d)

( Con

t. n

ext

page

)

12

53

18

IC1

Taillight andIlluminationSystem<8–2>

214

IH2

Left

Kic

k P

anel

IHA

IA7

R25

I24

23

DOOR

OFFON

23

DOOR

OFFON

IA8

W

W

W

W

W

17

2IA16

M13

21IA18

V 421

V 5

13

IA9

IA4

IA19

IE6

22IJ

IK9

26

IA1

B

DE F

G IJ K

W–R

L–W

L–Y

R–L

R–Y

R–B

R–B W

L–W

Moon Roof Control ECUand Motor<21–2>

TRLY

16

TAIL

Rel

ay

PW

S L–Y

W–B W–B

J11

GN

D2

GN

D1

ILE

1

W

W

W

R–G

W

R

W

W

W

R–G R

Mu

ltip

lex

Co

mm

un

ica

tio

n S

ys

tem

D EF

H J

NO P

R PW

–R

L–Y

R–L

R–B

R–B W

B 3

( A) ,

B 4

( B) ,

B 5(

C)

W

IA10

IE3

3A10

3E10

3B10

3C10

RR

R

R

1A

R–W

PU

PANEL Fuse<8–4>

AP

CB

7B

R–L

BCTY

1E8

1C8

1D8

B1

ID2

17IB

3

1

R–L

R–L

R–L

R–L

R–L

B 6

HL–

B

20A D RR P/W

20A P RR P/W

20A P FR P/W

IK12

IK14

IK10

G

G–Y

L–R

W

R

L–R

I LM

G L–B

KG

–Y

R–Y

4IA12

W–B

CR

GR

I17

Back DoorCourtesy SW

Bod

y E

CU

Interior Light

Junc

tion

Con

nect

or

Personal Light

Ignition Key Cylinder Light

Vanity Light LH

Vanity Light RH

28A

G

TAIL

A9

R–Y

PD

Moon Roof Control ECUand Motor<21–1> 20

3A

AR

IE16

TOWING TAIL Relay<9–3>

L

Rear Interior Light

2003 LEX

US

GX

470 (EW

D519U

)

M

9 10 11 12

1 GX 470 (Cont’ d) (Cont. next page)

BD110 7 IQ2

2

1

2

1

11 BD1

1 IQ2

25 A22 B

D 9

D11

IC17

2

1

1 IC1

26 A

D 8

BC110

1

2

11 BC1

21 B

D10

YB

W–G

Y

W–G

RR

PCYLRCYL DCYLLCYL

BR

R

Y

W–G

Y

W–G

R

D

EF

H

J

NO

P

R

R

PW–R

L–Y

R–L

R–BR–B

W

M u ltip lex Communication S ystem

B 3(A), B 4(B), B 5(C)

CD

F

H

PW–R

R–L

W–G

7 IH1

W–G

5 IH1

BP Left QuarterPanel Inner

B

CR

R

NW

KL

M

G–YG

L–B

I L–R G

L–YL–R

I

K

GL–B

G–Y

J

GR

ER

Body ECU

Door C

ourtesy LightFront LH

Door C

ourtesy LightFront R

H

Door C

ourtesy LightR

ear LH

Door C

ourtesy LightR

ear RH

MR–B

A

R–B L

BD112

1

2

I23

G–W

G–W

R

Inside Handle

Illumination R

ear RH

BC112

1

2

I22

R–W

R–W

R

Inside Handle

Illumination R

ear LH 1

2

I21

RG

–WR

Inside Handle

Illumination Front R

H 1

2

I20

BR

–WR

Inside Handle

Illumination Front LH

R R

R R

1 BB1 6 BA1

R B

2 BB1 5 BA1 9 IQ1 9 IC2

1

2

S14

G–W

1

2

S13

R–W

A4 ID2 A3 ID29 IF1

10

5

M13 W

R

2

1

S26 R

–LR

2

1

S25 R

–LR

A16 IR3

A17 IR3 A7 ID2

8 IF1

1 B 5 B

A8 ID2 A2 ID2

18 A

17 A 16 A 23 A 24 A 25 A 3 A 4 A

RR

G–W

R–W

G–W

R–W

G–W

G–W

R–W

R–W

W R–L

R–L

R–L

W

R–W

G–W

R R R

R

Rheostat

<8–11>

W–G

W–G

LSPT RSPT ILEW SG GND SIG BECU

RBD1 RBD2 CSPT

Sub Body ECUS27(A), S28(B)

B

W–B

W–B

B

B B

A

JunctionConnector

J31

JunctionConnector

J32

W–B

W–B

A9 ID2

FFCC

FFCCJunctionC

onnector

J18

BB–R

AW–R

B–R

W–R

R

R

5 BD1 5 BC1

R R

R R R

Step Light RH

Step Light LH

Moon R

oof Control S

W

Side Step Light R

H

Side Step Light LH

A

A

C

C

J28JunctionConnector


CA

BR

Personal Light


M OVERALL ELECTRICAL WIRING DIAGRAM

1314

15

16

1 G

X 4

70 (

Con

t’d)

( Con

t. n

ext

page

)

B CD

F H

LM N

PW

–R

L–Y

R–L

R–B

R–B W

Mu

ltip

lex

Co

mm

un

ica

tio

n S

ys

tem

B 3

( A) ,

B 4

( B) ,

B 5(

C)

FG

K M

PW

–R

R–L

A

SW

IJ

K

G–Y G L–B

GL–

RL

L–Y

L–R

N P

G L–B

G–Y

O

ER

IR

Bod

y E

CU

RR

–BR

–BQ

14A

1A

RW

SMR

WLM

Sub

Bod

y E

CU

S27(

A), S

28( B

)

EB–

R

DW

–R

B–R

W–R

Was

h

OFF INT

C1R

+1R

WR

EW

ON

Was

h

C15

Com

bina

tion

SW

Rear Washer SWRear Wiper SW

M

8B

H1

4B

H1

5ID

113

ID1

7IR

25

IR2

12ID

16

ID1

5A

4B

4ID

1

19A

2AW

WR

SWW

RLO

WR

IN

IJN

ear t

he R

ight

Sid

e of

Stee

ring

Col

umn

A

CL–

O

L–O

BAP–

G

AA

34 M14

IP3

L–RL–R

L–B L–B

L–R

L–B

L–R

L–B

R

R–B

P

L–O

R

R–B

P

P P–G

P

1

34

1310

122

W–B

IR21

BH

19

L–O

A

J22

Junc

tion

Con

nect

or

R29

Rea

r W

iper

Mot

orW

2W

ashe

rM

otor

LP

P

P

R–B

R

J14

Junc

tion

Con

nect

or

–+B

+1S

BQ

Back

Doo

r Pan

elC

ente

r

2

W–B W–B

L

B

MPX

–M

PX+

B2

B6

JL

HB

2003 LEX

US

GX

470 (EW

D519U

)

M

17 18 19 20


15A R

R W

SH

IC2 IJ28

10A EC

U–IG

10 20 C

7 IB3

2

10A H

EAD

(LO LH

)

210A

HE

AD

(LO R

H)

2

2

10A H

EAD

(HI LH

)

2

10A H

EA

D(H

I RH

)

2

R–Y

EBFront Left Fender

L–Y

B–R

SIG

WW

HR

R–B

R–B

R–B

R–W

W–B

R–Y

W–B

FG

K

M

QR

S

PW–R

L–Y

R–L

R–BR–B

W


B 3(A), B 4(B), B 5(C)

A

C

EF

G

K

M

R–Y

PW–RGR–L

R–L

R–W

A B A B

C A

EA Front Right Fender

W–B

W–B

R–W

J 4 (A)J 7 (A ), J 8 (B

)

W

2 2 2 2

1 1 1 1

NO

P

G–YG

L–B

L L–R L

B–RL–R

N

P

GL–B

G–Y

O

IK7

10A IG1 N

O. 2

GR

GR

–L

IR

IR

17

HRLY

IB8

R

R–L

Body ECU

JunctionC

onnector

JunctionC

onnector

JunctionConnector

J 4(A)

W–B

QW–BW–B

IF8

C B

A A A A

BR–G

1

2

H 2

R–G

1

2

H 1

R–G

1

2

1

2

H 3

H 4

R–W

E A

E B

A11 IB4

JunctionC

onnector

J 7 (A), J 8 (B )

R–Y

R–Y

R–Y

E B–R

D W–R

B–R

J32A

B

W–B

R–G

W–B

G–O

W–B

E

PRGRDA

PRGRDA

L–R

B

D 7

Left Quarter Panel InnerBP

B3B4

1

32

ID2A16ID2A15

JunctionConnector

1 ID1

E

EE

W–R

W–R

W–R

W–R

+B

5

JunctionC

onnector

J30

JunctionC

onnector

J31

DW–R

W–B

C L–O

L–OB

P–GA

IB13 IL3

15A R

R W

IP

L–O

IF11

L–O

P–G

H B

J L

HB

L J

Headlight H

igh RH

Headlight H

igh LH

Headlight Low

LH

Headlight Low

RH

Door C

ontrolR

eceiver

J 4 (A), J 5 (B

)JunctionC

onnector

A A

A A

AA

BA

B A

B A



2122

23

24

1 G

X 4

70 (

Con

t’d)

( Con

t. n

ext

page

)

1413

7HU

Dimmer SWLightControl SW

Hea

d

Aut

o

OFF Tail

Hig

h

Flas

h

8

EL

HF

TH

HL

1C

8C

7C N

ear t

he R

ight

Sid

e of

Ste

erin

g C

olum

nIJ

A16

525

3

T 5

G

R

G

R–W

HE

AD

TAIL

HF

W–B

J14

IND V–W

HO

RN G–R

P

+B2

A

C EF

G K MR–W

R–Y P

W–R

GR

–L

B–R R–L

Mu

ltip

lex

Co

mm

un

ica

tio

n S

ys

tem

BC D

FG K

LM

R–WR–G R–Y

W–R

GR

–L

B–R

W–B

R–L

B 3

( A) ,

B 4

( B) ,

B 5(

C)

C

HORN Relay<25–2>

1A18

J12 C

R–G

R–G

R–W

6IB

3

L–R

ELS

1

A15

Engine ControlModule<5–12>

IP51

C

R–G

R–W

LL–

R

N P

G–Y

L–B

OG

NO

L–R

G–Y

PQ

G L–B

1IH

1

1A8

1B8

AV

–W

V–W

V–W

Transponder KeyComputer<5–20>

TC

G–R Rheostat<8–10>

P

W–B

IR

IR

18C

W–B

Bod

y E

CU

Junc

tion

Con

nect

or

Junc

tion

Con

nect

or

Thef

t Det

erre

nt E

CU

Combination SWC14

QW

–B

RW

–B

2IH

1

A

Low

12

3C

G–O

A

4C

6C

21C

9II1

7II1

8II1 3

65

Y–G

G–Y

Y Y

L–Y

G–W

CLT

EC

LTB

CLT

S

A17

CLT

SC

LTB

CLT

E

C8

IB4

BR

–G

DW

–RE

W–R

7A

LG–B

DR

L

L–R

18IH

1

Turn Signal Flasher<10–4>

JL

HB

HB

JL

Auto

mat

ic L

ight

Con

trol S

enso

r

17

R–W

Fron

t Fog

Lig

ht S

W<

12–1

>

2003 LEX

US

GX

470 (EW

D519U

)

M

25 26 27 28


IH

A

29

16 IP3

1 T 1

1

1A11

1B1

14 C

1B3

1A3

10 2 31 12

1

2

J11

SH–

W–R

L–O

W–B

W–B

E

B–R

MPX1

W–R

W–R

IG +B1 KSW

KSW

G–Y

B G–Y

G–Y

G–Y

W–B

W–B

T 5

ML

K

GF

D

CB R–W

R–G

R–Y

W–RGR–L

B–RW–BR–L

B 3(A), B 4(B), B 5(C)


BC

D

G

R–GR–W

R–Y

R–L

B

B

1A13

2E6 2A16

2B6

J13

W–R

14 1A12 1A

ON

G–Y

QP

L–B

L–R

G

HI

W–RB–R

JK

L–RG–Y

LM

GL–B

W–R

FL

V–W A

2A6

Transponder Key Com

puter<

5–20>

EGR–L

AV–W

G–Y

G–Y

IR

NR

W–R

W–R

B–R

B–R

A15 IB4

4

1

34

E 3

DSWH

R–W

R–W

W–B

Body ECU

Engine H

oodC

ourtesy SW

JunctionConnector

JunctionConnector

Theft Deterrent ECU

Theft Deterrent

Horn

UnlockWarning SW

K 3

Left Kick Panel

R W–B

23 A

MPX2

D B

D A

A13 ID2

BW

B B

15

25W

14

13

Tilt andTelescopic E

CU

T 6R

emote C

ontrolM

irror EC

U

R10

Pow

er Seat EC

UP

20

MPX1

MPX2

MPX1

MPX2

MPX1

26 C

1A6

1A16 1C6 1D6 1B6

4 IN1

JunctionC

onnector

J36 (A), J37 (B

)

W 4

Mayday EC

UM

8

Airbag Sensor

Assembly

A28

BB B

BB

B

MPX3

2 18 22

MPX2 MPX1 MPX2

A1 ID2

BB

24

MPX1

E W–R

B

13 IH1

H B

J L

Wiper R

elay



2930

31

32

1 G

X 4

70 (

Con

t’d)

( Con

t. n

ext

page

)

BC D

G

R–G

R–W R–Y R–L

B 3

( A) ,

B 4

( B) ,

B 5(

C)

Mu

ltip

lex

Co

mm

un

ica

tio

n S

ys

tem

EF

G L

R–G

R–W R–Y R–L

W–R

B–R L–R

G–Y G L–B

IH

KJ

ML

11IC

113

IC1

1IC

25

IC2

2IC

212

IC1

109

201

1119

515

126

2

78

21

45

36

BD

R1

CP

UB

SIG

UD

VC

CP

LS1

PLS

2S

GN

DE

KO

F

MPX

1M

PX2

UD

SS

RB

PLS

PLS

2E

B

L

B–W

L

W

L

L–B

W–R

W–G

BR–B

W–B

L–Y

W–B

D18

5IQ

1

1IQ

12

IQ1

126

15

34

811

7

21

45

36

BD

RU

PD

NV

CC

PLS

1P

LS2

SGN

DG

ND

KOF

UD

SSR

B

B

PLS

PLS

2E

MPX

4 B

B–R

L

A

L–B

11

W–R

W–G

BR–B

W–B

G

W–B

P 7

L–B

IB4

A1

B

MPX

1

I

A24

B–Y

L–B

B–R

W–R

L–R

B–Y

P11

P10

B–Y

L

BB

B–Y

B–Y

B–Y

B–Y

K MN

B–Y

G–Y G

FL

V–W

AD

V–W

HG

R–L

BB

J17

GR

–LE

2RX B

16 LSW

DW–L

G

KUL

14

KL4

L

AW

–L G L

B C

RN

OR

Bod

y E

CU

Junc

tion

Con

nect

or

Pow

er W

indo

w C

ontro

l SW

Fro

nt R

HPo

wer

Win

dow

Mas

ter

SW

Pow

er W

indo

w M

otor

Fro

nt L

HP

ower

Win

dow

Mot

or F

ront

RH

J

P

W–B

W–B

A14

ID2 L LL

2003 LEX

US

GX

470 (EW

D519U

)

M

33 34 35 36



7

B 3(A), B 4(B), B 5(C)

R–G

L

G

FEE

W–B

W–B

B B

P13

B

9 BD1 8 BD1

12 6 1 5 3 4 8 11 7 9

1 2 4

G–Y

3 5

B–Y

6

G

BDR UP

B–Y

DN VCC PLS1 PLS2 SGND GNDKOF SEL1

U D SSRB PLS PLS2 E

B G L L–B

W–R

W–G

BR–B

W B–Y

W–B

W–B

P 9P 8

W–B

W–B

B–Y

W

BR–B

W–G

W–R

L–BL

G–Y

EPLS2PLSSSRBDU

SEL2KOF GNDSGNDPLS2PLS1VCCDNUPBDR

653421

1071184351612

P12

BC18BC19

14 B B16

MPX5 MPX6

I

K

MN

B–Y

B–Y

G–YG

F

G

L

R–GR–W

R–Y

R–L

R–W

R–Y

R–L

IHGR–L GR–L

V–W DDV–W

UL1L1

L–O

L–W

1 IK5 IK

1519

5 IQ2 6 IQ2

L–YL

W–B

7 BD1

2

B

RX

B

6 IH1BC1

2

B

RX

B

4 IH1

AW–L

G

L

B

C

AW–L

G

L

B

C

O R NR

UN

LOC

K

LOC

K

D19

Body ECU

Power Window Control SW Rear LH Power Window Control SW Rear RH

Door LockControl SWRH

Power Window Motor Rear LH Power Window Motor Rear RH

J W–B

P W–B

KW–B

W–B H

W–BM

W–B O

3 1

2

W–BJ



3738

39

40

1 G

X 4

70 (

Con

t’d)

( Con

t. n

ext

page

)

Mu

ltip

lex

Co

mm

un

ica

tio

n S

ys

tem

A

ACTD L–O

W–L

A10

8

G–B

G

G

5

G–B

R–W

E

LLS

SR W–B

L–R

L–B

W

L–R

L–B

W W–B W–B

J23

UL

W–B

W–B

W–B

L–R

L–B

W

R–B

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tion

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or

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tion

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B 7Back Door Key Lock andUnlock SW

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2003 LEX

US

GX

470 (EW

D519U

)

M

41 42 43 44


V–Y

LG–B

L–B

L–B

P–L

P–B

P–L

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US

GX

470 (EW

D519U

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M

1 2 3 4

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1

2003 LEX

US

GX

470 (EW

D519U

)

M

1 2 3 4

4 GX 470

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2

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2003 LEX

US

GX

470 (EW

D519U

)

M

5 6 7 8


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F

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Injector No. 3

Injector No. 4

Injector No. 5

Injector No. 6

Injector No. 7

Injector No. 8

JunctionConnector

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2003 LEX

US

GX

470 (EW

D519U

)

M

13 14 15 16


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2 4

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IGT8

G–B

24 A

IGF1

R–Y

23 A

IGF2

R–W

BR

E EE

EJ26

27 C

G2+

J26

C

C

W

1 ED1 2 ED1

Accel Position Sensor

Cam

shaft Position

Sensor

Crankshaft P

ositionS

ensor

Engine Control Module

Heated O

xygen Sensor(Bank 1 S

ensor 1 )

Heated O


ensor 2 )

Heated O


ensor 1 )

Heated O


ensor 2 )Junction Connector

JunctionConnector

P–B

P–B

A

AA

Com

binationM

eter<37–5>

JunctionC

onnector

J20

4 ED1

Knock S

ensor LH

Knock S

ensor RH

A/C Control Assembly(*1)<38–12>

* 1 : w/o LEXUS Navigation System* 2 : w/ LEXUS Navigation System



1718

19

20

5 G

X 4

70 (

Con

t’d)

A B C

W–R

R–Y

B–O

EE

Rea

r Ban

k of

Rig

ht C

ylin

der

Hea

d

6A

7A

7C

4C

1C

23C EG

Rea

r Ban

k of

Left

Cyl

inde

rH

ead

CC C

BR

W–G BR

W–B

W–B

W–B

W–B

1D IL

Rig

ht K

ick

Pan

el

15E

26D

27D

10

G–Y

W–B

4

R–Y

67

14

A

14

57

811

1213

R

Y

Y–B

BR

VC5

CO

DE

TXC

TG

ND

29

1

IGD

+BVC

5C

OD

ETX

CT

AG

ND

EFI

OE

FII

GN

DKS

WC

TY

T 9

En

gin

e I

mm

ob

ilis

er

Sy

ste

mE

ng

ine

Co

ntr

ol J10

W–B

W–B

W–B

Door Courtesy SWFront LH<1–43>

Unlock Warning SW<1–26>

B–R

R–Y

W–R

IMI

IMO

E01

E02

E03

ME0

1E

1LC

KI

HP

EOM

17D

V–R

IB4

IL4

1B3

1D4

W–R W–R

5E

B–W

14E

W–LAirbag SensorAssembly<14–4>

4D

G–WDetection SW(Transfer L4 Position)<18–1>

19D

G–YStop Light SW<11–1>

17E

P

24E

R

30E

W

25E

B

31E

Y

CombinationMeter<37–4><37–6>

Ski

d C

ontro

l EC

U<

15–4

>

E 5

( A) ,

E 6(

B) ,

E 7(

C) ,

E 8

( D) ,

E 9

( E)

W–R

L–R

SPD

TAC

HF/

PS

L4S

TPN

EOE

NG

+E

NG

–TR

C+

TRC

–

Eng

ine

Con

trol M

odul

e

Tran

spon

der K

ey A

mpl

ifier

JunctionConnector

Transponder KeyComputer

I17

21

BR

A/C Lock SensorA 3

2IO

3 W–B

3

V–W CombinationMeter<1–24>IN

D

1B1

1C2

B–R

10A

EC

U–I

G

IC2

IJ28

B–R

L–Y

11C

GDetection SW(Transfer NeutralPosition)<18–4>

TFN

W–B

ANT2

ANT1

Tran

spon

der K

ey C

oil

J23

Junc

tion

Con

nect

or

2003 LEX

US

GX

470 (EW

D519U

)

M

1 2 3 4

6 GX 470 (Cont. next page)

50AAM1

2

2

1

1

2

2

30AAM2

2 2

2

1

10AETCS

20AEFI

2

2 2

1 1

2 2

2

7

ACC

IG1

IG2

ST2

AM1 4

6AM2

2

1

3

5

2 2

2 2

C17 IB4 8 IP4 C3 IB4

EB Front LeftFender

10 IP4

8 E 3 E 6 D

1 E 2 E 11 B

8

GR

10 B

15

W–L

15 B

7

Y–R

13 B

14

W–G

12 B

6

B–Y

16 C

13

G–B

15 C

5

R–L

19 B

12

Y–G

18 B

4

L–Y

17 B

11

LG–B

16 B

3

P–L

32 B

10

L–R

24 B

9

Y–G

28 A

S1 S2 SR SLT+ SLT– SLU+ SLU– SL1+ SL1– SL2+ SL2– OT+ OT2+

10AIGN

ID6

IJ11

9 E

1

2

27 B 35 B

1

2

26 B 34 B

E lectron ically Controlled Transmiss ion and A /T Ind icato r

B

W–L

W W–R

L–B L

B

W–B

B

B B

B

W–B

B

L–Y

B–R

Battery

I18

EFIRelay

W–G L L–B

W–G

L

L–B B–O

B–O

V 1

T 4

R GL Y

OT– OT2–

BR BR

BR

E 1

MREL BATT +BM IGSW NT+ NT– SP2+ SP2–

+B +B2 S1 S2 SR SLT+ SLT– SLU+ SLU– SL1+ SL1– SL2+ SL2– TH01 TH02 E2

L–Y

B–R

E 5(A), E 6(B), E 7(C), E 8(D), E 9(E)

2 1

P ower S ource

7. 5AGAUGE

IG4

R–L

R–LC

J21

140A ALT

W B SB G GR

LG BR R L Y V O Y

O Y

Electronically Controlled Transmission Solenoid


Ignition SW

JunctionC

onnector

TurbineSpeedSensor

C

CCB

B

JunctionC

onnector

J 2

W–B

W–B

3

A

W–G

W–G

Vehicle Speed Sensor

(Electronically C

ontrolled Transm

ission )



56

78

6 G

X 4

70 (

Con

t’d)

( Con

t. n

ext

page

)

E 5(

A) ,

E 6(

B) ,

E 7

( C) ,

E 9

( D) ,

E 8(

E)

Ele

ctr

on

ica

lly C

on

tro

lled

Tra

ns

mis

sio

n a

nd

A/T

In

dic

ato

r

16A

NS

W

9B

STAR

12C

STS

W

17A STA

20E TC

18E SIL

19E

WFS

E

18A VC

21A

VTA

1

31A

VTA

2

3C M+

2C M–

17C

GE

01

19A

THW

30A VG

29A

E2G

20A

THA

22E VP

A

23E

VP

A2

26E

VCP

A

27E

VCP

2

28E

EP

A

29E

EPA

2

17D SP

D

19D ST

P

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ne C

ontro

l Sys

tem

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5–10

><

5–11

><

5–12

><

5–14

><

5–15

><

5–16

><

5–17

><

5–18

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20D

8D

7A

6A

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4C

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rH

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1D

15E

A

ILR

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Kic

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C C1C

25D

6E

23D

9D

11D

7E

10D

7A

D E F G H I

C 9

( A) ,

C10

( B)

G–O

G–R

W–B

W–B

W–B

W–B

G–Y

G–W R–Y

G–R P–L

G–B

P

G–B

P–L

G–R

R–Y

G–Y

G–W

EG

Rea

r Ban

k of

Left

Cyl

inde

rH

ead

9A

W–B

J23

W–B

W–B

BR

J10

BR

BR

BR

3L

E01

E02

E03

ME0

1H

PE

OM

E1

OIL

WP

42

RN

D

7IO

1

BL–

Y

R–L

CR

–L

19A

Com

bina

tion

Met

er

Engi

ne C

ontro

l Mod

ule

Junc

tion

Con

nect

or

Junction Connector

3D

4A

GR–R

SN

WO

B C

G–O

G–R

2IO

3 W–B

5D

SN

W1

2E9

2C9

43

GR–L GR–L W–B

Electronically ControlledTransmissionPattern Select SW

E 4

2nd STRT

A/T OIL TEMP

2nd STRT

A

AG

AW

–G

22

22

Eng

ine

Con

trol S

yste

m<

5–3>

ACC

CU

TR

elay

W–G

7. 5

AA

CC

IK8

ID5

10A

IG1

NO

. 2

IK72

IC

D 4

Dio

de( B

ack–

Up

Ligh

t)

132

GR

GR

GR

L–Y

GR3

2

41

IB4

C12

AA

IB4

A12

GR

GR

GR

J19

Junc

tion

Con

nect

or

2003 LEX

US

GX

470 (EW

D519U

)

M

9 10 11 12

6 GX 470 (Cont’ d)

E lectron ically Controlled Transmiss ion and A /T Ind icato r

RN2L3

CenterDifferentialLock System<18–4>

A6C 9(A), C10(B)

G–B

G–BE

CW

–B

E

G–W

12 W–B

IM13

Wiper R

elay<

19–3>G

–W

J24

IO221IO220

R–B

IO11

DN

RP3L2

A19

672111

45 G–Y

G–R

G–B

G–W

R–B

J17

ATL

Y–L

Y–L

G–O G–OF F

4

F

IM120

F

B14

G

G–Y

NSSD

9IO1

G–Y

ATD

2

R–B

2E

10

J24D

G–R

L

G–W

G–Y

G–B

R–B

G–R

19 3A

IM118 IM115

9 3A

9

10

3BE

2 IJ

2 IL

IM122

IM121

IM116

9

D

D

B

B16

RB

C

DE

14

R–B

C

R–Y

L

G–B

R–B

G–B

G–W

G–WG

L

G–R

GG

P 1

IO18

IM1

B18 B19

E

B17

8 4 7 5 2 1

3

LL 2L DL NL RL PL

10 IO1L

C

B13A18

B

IO12

G

R–Y

G–R

2C

P

S 5

A/T P

Combination Meter

JunctionConnector

JunctionConnector

JunctionC

onnector

TransmissionControl SW

JunctionConnector

J24

JunctionConnector

J15

G–R

E

G–B

Body ECU

<1–48>

C C

CJunction ConnectorJ18

J19FF

F

G–Y

JunctionC

onnector

R–B

4

3 Y–LP

–L

IM119

R–B

20 2A

3A

8

18

3A

3B8

B15

4

C

EE

EE

E

E

E

G–B

Skid C

ontrol EC

U<

15–8>

IJ *1

R–B

2D

Junction ConnectorJ18

P–L

G–B

G–W

G–Y

G–R L

JunctionConnector

J20

P–L

G–R L

G–W

G–Y

R–B

G–B

G–O

3

5 10

Navigation E

CU

<33–6>

<34–7>

Rem

ote Control

Mirror E

CU

<22–3>

10

B

B

P–L

P–L

AT4

NSSLAT2

G

G–W

G–Y

G

R–B

EG–B

A

W–B Junction

Connector

J14

* 1 : Near the Right Side of Steering Column

G–R

G–O

A

B

C

D

E

G

H

I

F

A/T Shift Indicator

Park/Neutral Position SW



12

34

7 G

X 4

70( C

ont.

nex

t pa

ge)

30A

AM

2

2

2 1

10A

ETC

S20

AE

FI

22

11

22

21

35

22

22

C17

IB4

8IP

4C

3IB

4

EB

Fron

t Lef

tFe

nder

10IP

4

8E

3E

6D

1E

2E

10A

IGN

ID6

IJ11

9E

W–R

L–B

L

W–B

B

B

B

B

W–B

B

B–R

EFI

Rel

ay

W–G

L

L–B

W–GL

L–B

B–O

BA

TTM

REL

+BM

IGS

W

+B2

+B

B–R

E 5(

A) ,

E 6

( B) ,

E 7

( C) ,

E 8(

D) ,

E 9

( E)

Cru

ise

Co

ntr

ol

2

7IG

2

ST2

AM

26

I18

7. 5

AG

AU

GE

IG4

19A

4D

13D

R–L

LG

B–O

IE23

12D

5IP

3

12

43

BB

R–LR–L

Stop LightSystem<11–2>

B–O

B–O

B–O

J 5

PIST

1–

24D

C

L–B

BR

B

Bat

tery

J10

CC

S

Po

we

r S

ou

rce

+ R

ES

– S

ET

CAN

CEL

4ON–OFF

EC

C

5

CC

S

10IO

2

BR

C13

S17

CRUISE

C 9(A), C12(D)

R–L

Combination Meter

Com

bina

tion

SW

Engi

ne C

ontro

l Mod

ule

Igni

tion

SW

Junction Connector

Junc

tion

Con

nect

or

Stop Light SW1

C

C

BR

E1

W–B

W–B

CCC

Junc

tion

Con

nect

or

J21

AA

Junc

tion

Con

nect

or

J13

BR

EG

Rea

r Ban

k of

Left

Cyl

inde

rH

ead

BR

L

CB

R

L–B

14IH

1

BBJ

2Ju

nctio

nC

onne

ctor

2003 LEX

US

GX

470 (EW

D519U

)

M

5 6 7 8

7 GX 470 (Cont’ d)

E 5(A), E 6(B), E 7(C), E 8(D), E 9(E)

28 A

E2

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

22 E

VPA

23 E

VPA2

26 E

VCPA

27 E

VCP2

28 E

EPA

29 E

EPA2

17 D

SPD

19 D

STP

Engine Control System<5–8><5–10><5–11><5–12><5–15><5–16><5–17><5–18>

7 A 6 A 7 C 4 C

EE Rear Bank ofRight CylinderHead

1 D 15 E

A

IL Right KickPanel

W–B

W–B

W–B

W–B

W–B

J23

W–B

W–B

E01 E02 E03 ME01 HP EOM

C ruise C ontro l

11 B

S1 S2

B10 15 B

SR

13 B

SLT+

12 B

SLT–

16 C

SLU+

15 C

SLU–

19 B

SL1+

18 B

SL1–

17 B

SL2+

16 B

SL2–

10 D

D

Electronically Controlled Transmission andA/T Indicator System<6–2><6–3><6–4><6–8>


JunctionConnector

2 IO3


W–B



12

34

8 G

X 4

70( C

ont.

nex

t pa

ge)

2

140A

ALT

TAIL

8C

Ta

illig

ht

an

d I

llum

ina

tio

nP

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er

So

urc

e

G

B

2 2

50A AM1

22

11

122

2

21

35

IC1

B 5(C)

50A J/B

IL5

IF13

10A TAIL

TAIL Relay

L–Y

IB9

IB11

41

41

EB

Fron

t Lef

t Fen

der

EA

Fron

t Rig

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nder

C

BQ

Bac

k D

oor P

anel

Cen

ter

W–B

W–B

W–B

G

G

W–B

W–B

G

G

CC

I18

W BW–L

L–Y

G

G

J30

Bat

tery

TRLY

18

IJ21

10A PANEL

FB

DA

G

A

BPLe

ft Q

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rP

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Inne

r

A

3IR

2

15B

H1

21

21

G

G

G W–B

W–B

G

L 1

L 2

J 7(A), J 8(B)

J32

G

D

DJ1

7

12

2

SHORT PIN

2

10A DOME

2

W–L

30A AM2

2

W–R

2 7

AC

C

IG1

IG2

ST2

AM1

4 6AM

2

W–R

R

B–R

B–R

G

G

G

DCAR

2

2

1

1

Multiplex CommunicationSystem<1–23>

L–W

Body ECU

Igni

tion

SW

JunctionConnector

Junc

tion

Con

nect

or

Junc

tion

Con

nect

or

Junc

tion

Con

nect

or

License PlateLight LH

License PlateLight RH

W–B

22

55

G

FB

DA

Rear CombinationLight RH

R15

Rear CombinationLight LH

R14

F 4

33

F 3

G

G

Parking

Side Marker

Parking

Side Marker

D

Body ECU<1–8>

G Towing Brake Controller<9–4>

Front Parking Light RHFront Side Marker Light RH

Front Parking Light LHFront Side Marker Light LH

2003 LEX

US

GX

470 (EW

D519U

)

M

5 6 7 8

8 GX 470 (Cont’ d)

Ta illigh t and Illum ination

(Cont. next page)

2B1

2A2 2D1

2B3

2C3 2A4 2A3

2D4

5

6

5

6

S 3

S 4

G G

W–B

W–B

W–G

2C1

2

1 E 4

GW

–GW

–G

1

5

2

1

2A112A12 6 IM1

G

GGG

11 IM110 IM1

W–G

W–G

W–G

W–B

W–B

G

W–G

D 5

A19

G

B

IK120

W–BW–B B

J25

G

G

6 IK1

A22

GW

–B

2C2

1

6

32 IJ1

61 IJ1

GW

W–B

W–B

W–B

(*3 )

(*4 )(*4 )

(*4 )

(*3 )

(*4 )

GW

–B

2E2

8

(*3 )(*3 )

W–G

G

W–G

G

W–G

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W–G

GG

2 1

2

2

1

2

1 C 41M 3

G

1

G

W–G

A33

C 8

M 4

2

W–G

G

W–G W–G

4 H11

G G G G

W–G

W–G

W–G

W–G

G G

W–G

C

D

B

G

L–Y

B–R

W–G

132A

L

K

J

I

W–G

W–G

W–B

W–G

(*3)

B

C

G

L–Y

B–R

* 3 : w/ LEXUS Navigation System

AARR

Accessory M

eter

Ashtray Illum

ination

Center D

iff. LockC

ontrol SW

Cigarette Lighter

Illumination

Hazard S

W

Main S

W

JunctionConnector

Mirror H

eater SW

Seat H

eater SW

Front LH

Seat H

eater SW

Front RH

Dow

nhill Assist

Control S

W

* 4 : w/o LEXUS Navigation System

A

A

EAU

ILL+

1

10

Radio and P

layer System

<35–9>

<36–6>

Multi–D

isplayM

5

Height C

ontrol andS

uspension SW

H14

R 42

5

G

JunctionConnector

J25A

2

1Console B

ox Illumination

C16

B

W–B

W–B

(*1 )

(*2 )G

G

(*1 )

(*2 )

(*1 )

(*1 )

JunctionConnector

J23

W–B

IQ28

Door Lock C

ontrolSW

RH

G

D19

W–B

B

B

A

W–B

4 IQ1

JunctionC

onnector

J28

G

W–G

G

R11

2A

5

1

Rem

ote Control

Mirror SW

6

W–G

W–G

G

(*1 )

(*1)

DG–R(*4)

EG–R(*3)

G–RH

FG–R

13

14 9

2 IM1

G–R

G–R

1 2E

G

Com

binationSW C

13

G–R

8

38 IJ1

G–R

G–R

(*3 )

(*4 )(*4 )

7

3

* 2 : w/o Rear A/C* 1 : w/ Rear A/C

(*3 )

G–R

IL Right KickPanel


A A W–B

4

2

IL Right KickPanel

Electronically C

ontrolledTransm

ission Pattern Select S

W

A/T S

hift Indicator

Rear C

ooler SW



91

01

112

8 G

X 4

70 (

Con

t’d)

10A IG1 NO. 2

IC2

IK7

TRE

TIG

5

12

G

GR–LGR

W–B

L–Y

Ta

illig

ht

an

d I

llum

ina

tio

n

8

G–R

R12TC

(*4)

W–G

A13(A), A14(B), A15(C)

G

G

G

W–G

W–G

G

W–G

G

R 1(A), R 2(B)

E

E EE

18A

27C (*4)

(*3) (*3)

21 21 IL

A

Rig

ht K

ick

Pan

el

W–B

Left

Kic

k Pa

nel

IHAJ1

1

G 4G 5

W–BW–B

CCC

W–G

J22

36IJ

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GL–Y

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W–G

W–G

W–B

W–G

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Glove BoxLight Glove Box Light SW

Junc

tion

Con

nect

or

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tion

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nect

or

JunctionConnector

Radio and Player

Rheostat


HeaterControl SW

H13

ILL–

3

W–B

W–G

ILL–

6

Body ECU(TC)<1–21>

W–B

4

W–G

G–R

G

W–G

C 9(A), C12(D)

13D

16A

17A

3C5

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20A

19A

R–L

Illumination

7. 5A GAUGE

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IG4

B–R

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BR

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1

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BR

Combination Meter

1A9

1B9

1A19

W–G Sub BodyECU<1–12>

G–R

53E

5

G–R

3B

G–R

3A5

5

G–R

3D

3A15

G–R Body ECU(ACAN)<1–48>

G–R(*4)

(*3)

DG

–R( *

4)

EG

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3)

FG

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3)

2A

20B

12A

G–R

2IJ

1G–R

15B

G–R

G–R

G–R

BBB

B

JunctionConnector

J19

1213

22

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–R

(*3)

(*4)

( *3)

W–B

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: w/o

LEX

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S N

avig

atio

n S

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m

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AN

(*3)

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2003 LEX

US

GX

470 (EW

D519U

)

M

1 2 3 4

9 GX 470

Battery

B

2

30ATOWING

1

2

2 2

W

2

140AALT

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1

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1

2

2

1

2

2

1

2

2

1

50AAM1

2

2

GR

2

ACC

IG1AM1 4W–L

Ignition SWI18

IC2

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GR

–L

E

E

GR–L

C

C

GR–L

4 4

2

1

5

3

4 4

B–Y

B–Y

GB

A5 IB4

BATTCHGRelay

JunctionC

onnector

J 1

L–Y

4 4

2

1

5

3

4 4

TOWINGTAILRelay

L

W–B

L L B

2 IA111 IA2

Body E

CU

<1–5>

EB Front LeftFender

B

BW

–BW

–B

BL

BG12

JunctionConnector

J 2

TAIL

1

STTR

5

3 BF1 4 BF1

BR R

STTL

3

L–R

L–O

BRK

7

BATT

2

GND

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B/UP

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TAIL

RTIN

3

LTIN

9

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8

BRK

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B

IJNear the RightSide of SteeringColumn

BP Left QuarterPanel Inner

AA

JunctionConnector

J14

3 BG1

1 BG1

1 BF1

3 ID2

YR

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–B

W–B

GG–Y

W–B

L

Stop Light SW

<11–1>

TAIL Fuse

<8–4>

BK/UP LP Relay<13–4>

A

Junction Connector

J31

JunctionC

onnector

J32

W–B

Y

W–B

GR

L–Y

L–B

G–Y

Turn SignalFlasher<

10–5>

DAC

Relay

<11–3>

YL B

G

P ower S ource Trailer Tow ing

B

40ATO

WIN

G

30ABA

TT CH

G

30AB

RA

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TRL

G B W

T13Towing ConverterRelay

T14Trailer Socket

T 8Towing BrakeController



12

34

10

GX

470

22

2

22

140A ALT

15A TRN–HAZ

50A AM1

111

222

2

ACC

IG1

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14

IC2

10A

IG1

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16

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GR–L

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W–B

W–B

W–B

W–B

W–B

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y E

CU

<1–

48>

( Con

t. n

ext

page

)

Com

bina

tion

SW

Front Turn Signal Light LH

Front Turn Signal Light RH

Hazard SW

Igni

tion

SW

Junc

tion

Con

nect

orJu

nctio

nC

onne

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Turn

Sig

nal F

lash

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3

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C10

IB4

C15

IB4

AA

J23

Junc

tion

Con

nect

or

ILR

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Kic

kP

anel

12

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DR

L

Bod

y E

CU

<1–

22>

2003 LEX

US

GX

470 (EW

D519U

)

M

5 6 7 8

10 GX 470 (Cont’ d)

3 IG IG2

IJ23 IJ5

IF9 IF15

7

A

B

BPLeft Quarter Panel Inner

A

B

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A

D

A

DD

A

Turn

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R15

J30

W–B

C 9(A), C10(B)

2

L–B

L–Y

L–B

L–Y

L–Y

L–B

L–B

L–Y

L–Y

L–B

Towing C

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<9–3>

W–B

J32

T10

J30

LHRH

9 A

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BR

T urn S ignal and Hazard W arning L igh t

BR

CombinationMeter

JunctionC

onnector

JunctionC

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JunctionConnector

Rear C

ombination

Light LH

Rear C

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Light RH

Turn Signal Flasher


4 4

5 5



12

34

11

GX

470

22

140A ALT

1

50A AM1

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2

22

2

AC

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14

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B

Bat

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2

1

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22

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G–Y

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LG

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W–B

W–B

W–B W–B

W–BG–Y

G–Y

G–Y G–Y

G–Y

G–Y

WW–L

G–R

G–Y

L–Y

B–RB–R

G–R

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S17

R14

R15

H19

DAC Relay

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J 9

J 7(A), J 8(B)

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BB

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tion

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or

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<9–

4>

A

High MountedStop Light

Igni

tion

SW

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tion

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nect

or

JunctionConnector

Junc

tion

Con

nect

or

Junc

tion

Con

nect

or

Junc

tion

Con

nect

or

Rear CombinationLight LH

Rear CombinationLight RH

Stop Light SW

Skid Control ECU(STP2)<15–8>

Stop

Stop

DD

D

D

Junc

tion

Con

nect

or

J22

G–Y Wiper Relay<19–3>

G–Y

D

2003 LEX

US

GX

470 (EW

D519U

)

M

1 2 3 4

12 GX 470

2

B

Battery

2

140AALT

2

1

1

2

2

15A FR FO

G

LG–R

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ON

Front FogLight SW

C14

10 11 11 IP5

FR FOGRelay

2

1

3

5

G–R

J 7 (A), J 8 (B

)

EBFront Left Fender

W–B

W–B

2

1

LG

A

EA Front Right Fender

W–B

W–B

2

1

LG

A

LG

LG

A A

12 IP5

6 B

LG–B

LG

P ow er S ource Front Fog L igh t

HEADRelay

Taillight andIllum

inationS

ystem<

8–2>

LFG BFG

F 2

F 1

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9 A

C 9 (A ), C

10 (B)

10AHEAD(LO LH)

BR

7 IO1

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2

E A

E B

2 2

2 2

1 3

2 5

R–Y

R–Y

G–R

LG–R

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bination Meter

Combination SW

Front Fog Light LH

Front Fog Light RH

JunctionC

onnector

JunctionConnector

J 6

W–B

2

B

B

R–G

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onnector

J 4

W

22

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2

1

Combination SW<1–23>

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ff

10 IA2

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ffLG



12

34

13

GX

470

140A ALT50A AM1

22

22

2

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or

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Back–Up Light RH

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ket

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3>

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3

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AA

CC

3

21

12

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55

55

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22

22

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GR

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G

AC

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ayPark/NeutralPosition SW

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IB4

C12

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AA

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GRGR

GR

J19

Junc

tion

Con

nect

or


Memo



12

34

14

GX

470

( Con

t. n

ext

page

)

I18

B

Batte

ry

5B IG2B–O

IL206

ID

10A

SRS

23B

GS

W2W–LEngine Control Module

<5–17>

12B SILW

19B TC

P–B

Data Link Connector3<5–7>

13BD–

2

14BD+

1

16BD2+

4

17BD2–

3

Y

Y–B

Y–V

Y–O

10BP+

1

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Y–G

8BP2+

3

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Y–GR

Y–P

15B+S

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2

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1

W–R

BR

W–R

BR

9B+SR

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20B–SR

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7A

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+

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W–B

2IB

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12

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r R

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BR

2003 LEX

US

GX

470 (EW

D519U

)

M

5 6 7 8

14 GX 470 (Cont’ d)

A27(A), A28(B), A29(C)

17 A

SSL+

3

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2

16 A

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4

18 A

ESL

1

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12 A

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2

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5 6 1

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17 C

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19 A 4 A 3 A

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BMUnder theDriver’ s Seat

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14 C

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SR

S

C 9(A), C11(C)

RBE+

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W–B

W–B

RBE+LBE+LSP+LSP–

RBE–

LBE–Airbag Sensor Assembly

Buckle SW LH

Buckle SW RH

Combination Meter

Side Airbag Sensor Front LH Side Airbag Sensor Front RH

Side AirbagSquib LH

Side AirbagSquib RH

24 B 22 B

MPX1 MPX2

Multiplex C

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unicationS

ystem<

1–28>

Seat PositionSensor



12

34

15

GX

470

( Con

t. n

ext

page

)

B

140A ALT

122

50A AM1

1

50A ABS SOL

2 1

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2

1

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24

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22

22

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B–Y

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1

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27A

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A) ,

A 5(

B) ,

A 6

( C)

VS

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S 8

( A) ,

S 9

( B) ,

S10

( C) ,

S11

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217

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19IK

220

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216

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2

R

W

G

Y

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AA

J 2(A)

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EBFr

ont

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er

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: Shi

elde

d

Igni

tion

SW

JunctionConnector

Ski

d C

ontro

l EC

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ABS

& B

A &

TR

AC &

VSC

Act

uato

r

Yaw

Rat

e S

enso

rY

1

AA

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

2003 LEX

US

GX

470 (EW

D519U

)

M

5 6 7 8


B

C

V S C

B

C

L–Y

B–R

L–Y

B–R

18 B

RL+

19 B

RL–

R G

20 B

RR+

21 B

RR–

B W

3 B

D/G

12 B

TS

Data Link

Connector3

<5–6>

<5–7>

16 D

10 C

SFRH

V–R

SFRH

8 D

9 C

SFRR

V–G

SFRR

7 D

4 C

SRLH

Y–G

SRLH

1 D

3 C

SRLR

Y–B

SRLR

2 A

12 C

SA1

L–O

SA1

3 A

11 C

SA2

L–W

SA2

4 A

5 C

SA3

L

SA3

5 A

6 C

STR

L–R

STR

31 A

GND1

W–B

6 A

GND2

8 B

GND3

17 B

GND4

6 D

1 B

AST

Y–R

AST

W–B

1

2 2

1

A 7

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JunctionConnector

JunctionConnector

Master CylinderPressure Sensor

Skid Control ECU

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BR–Y

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W–R

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Rear Height ControlValve

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2003 LEX

US

GX

470 (EW

D519U

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M

5 6 7 8

16 GX 470 (Cont’ d)

Active H e ight C ontro l S uspens ion and E lec tric M odulated A ir S uspens ion

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IB33IB32IB31 IB34

C15C16 C17 C18

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8 C 9 C

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S18(A), S19(B), S20(C)

C 9(A)

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Y–GY Y–B

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BR

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Y–G

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B–W

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L–RL–R

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STP TACH FLO FRO

Stop Light S

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SGND SGV

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6 BE1

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14 IB2 13 IB2

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B–O

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Absorber Control ActuatorFront LH

Absorber Control ActuatorFront RH

Absorber Control ActuatorRear LH

Absorber Control ActuatorRear RH

Combination Meter

SteeringSensor

Skid

Control

EC

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AccelerationControl Sensor Rear

Suspension Control ECU

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2003 LEX

US

GX

470 (EW

D519U

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M

1 2 3 4

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Center Diff. Lock ECU

Ignition SW

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Rear Bank ofRight CylinderHead

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2003 LEX

US

GX

470 (EW

D519U

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M

1 2 3 4

20 GX 470

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Combination SW

Front WiperMotor

Ignition SW

JunctionConnector

JunctionConnector

WasherMotor

C6 IB4 C5 IB4 A9 IB4

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7A

6A

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IHLe

ft K

ick

Pan

el

A

22

13IAIA

15

87

6

3

910

45

61

E

OPE

N/D

OW

NC

LOS

E/U

PE

SP

DPW

S+B

IG

DO

WN

UP

M13

W–B

R–Y

R–W

B–R

L–O

L–Y

V–R

W

W–B

Body ECU<1–6>

Combination Meter<37–3>

30A POWER

B

W–B

I18

50A AM1

50A J/B

J11

W–L

L–W

L–Y

Po

we

r S

ou

rce

Mo

on

Ro

of

L–W

M

M+

M–

M12

Igni

tion

SW

Junc

tion

Con

nect

or

Moo

n R

oof C

ontro

l SW

2 KO

PR–Y

R–W

KC

L

1

19IF

120

IF1B

ody

ECU

<1–

8>

R–Y

R–W

Moo

n R

oof C

ontro

l EC

Uan

d M

otor


Memo



12

34

22

GX

470 P

ow

er

So

urc

eR

em

ote

Co

ntr

ol

Mir

ror

3

AM

1IG

1

AC

C

2

2

1 2

3 4

2

7. 5A ACC

2

W–L

I18

Bat

tery

W–G

ID5

22

GR

ACC CUT Relay

GR

2

Igni

tion

SW

2

12

SHORT PIN10A ECU–B

2 2

M+

MH

SV

MV

SH

MVL

MH

LV

C

86

710

169

15

B–W

B–Y

1112

109

87

19

B–W

B–Y

G–W

G

Y

G–R

G–B

B–W

B–Y

M+L

HSR

LV

SRL

E1

VDD

GN

D

A B

1C4

1B3

15

R–BR–BPark/Neutral Position SW<6–11> R

EVM

PX1

1325 M

PX

2


Nea

r the

Rig

ht S

ide

ofS

teer

ing

Col

umn

IJ

Rem

ote

Con

trol M

irror

LH

M10

W–R

GR

W–R

AC

C

21 +B

GN

D

14

W–B

B–Y

B–W

W–LW–R

R10

Rem

ote

Con

trol M

irror

EC

U

22

11 22

B

W

W–L

2 1

140A ALT50A AM1

IK8

A

Junc

tion

Con

nect

or

J14

Engine ControlSystem<5–3>

4IB

4IL

W–R

P–B

P–G

Y–B

B–R

B–L

14IC

115

IC1

16IC

16

IC1

10IC

15

IC1

8IC

1BR

G–Y

JunctionConnector

J21

JunctionConnector

J24

D

A

D

A

D

A

( Con

t. n

ext

page

)

A12

IB4

AA

GR GR

IB4

C12


2003 LEX

US

GX

470 (EW

D519U

)

M

5 6 7 8

22 GX 470 (Cont’ d)

R emote Contro l M irro r

Remote Control Mirror RHM11

R10Remote Control Mirror ECU

53

SWHR SWVR

MLV MLH E B MR MRH MRV

18171646

YGY–B

GR

–G

GR

–L

G–R

Y–R

Y–B

GR

–G

GR

–L

G–R

Y–R

OperationSW

SelectSW

VL HL MIRE MIRB RCAN

YG

11 IQ215 IQ2IQ212IQ213 10

VSSRHSRRMVR M+RMHR

202124 2223

15 9 6 10 16

M+MH

IQ2

LG–B

G–WGG–R

G–Y

BR

B–L

B–R

LG–R

Y–B

LG–B

B–L

B–R

LG–R

B–Y

B–W

G–B

Y

78

GND VDD MV SH SV

IQ214

A

B

B–W

B–Y

Remote Control Mirror SWR11

16 IQ2

Y–B

3 9 8 4 1 10 2



12

34

23

GX

470

22 2

140A

ALT

50A

AM1

2

1

12

2

W B

Bat

tery

B–W

2

12

10A

MIR

HE

ATER

2

AC

C

IG1

AM1

4

IC

10A

IG1

NO

. 2

IK7

3B6

3E6

5

21

35

5

55

IHLe

ft K

ick

Pane

l

A

5

34D

E

RW

–L

MIR

HTR

Rel

ay

GR–L

R

W–B W–B

GR–L

W–B

IG

GR–LGR

B–W

I18

2

B–W

L–Y

W–L

A8

IB4

9IC

1

125 BB

4IC

2

FF

F

W–L W W–B W–B W–B

J29

9IQ

2

125 BB

4IQ

1W–L W W–B W–B W–B

J28

ILR

ight

Kic

k P

anel

AJ2

3J1

1A

Mir

ror

He

ate

rP

ow

er

So

urc

e

W–L

Igni

tion

SW

Junc

tion

Con

nect

orJu

nctio

nC

onne

ctor

Junc

tion

Con

nect

or

J20

Mirror HeaterLH

M10

Mirror HeaterRH

M11

Mirr

or H

eate

rS

W

M 4

Junc

tion

Con

nect

orJu

nctio

nC

onne

ctor

2003 LEX

US

GX

470 (EW

D519U

)

M

1 2 3 4

24 GX 470

2

2

2

140AALT

50AAM1

2

ACC

IG1AM1 4

2

B B

B A

EB Front Left Fender

5

3

1

2

4

22 2

IE20

10AIG1

IC2

2

30ADEFOG

2

2

1

9 IP4

5 BH1

B

B

18 IR2

IP37 A/C Control Assembly

(*1)<38–8>1

1

2

2

WB

W–B

R

Battery

J 2(A), J 3(B)

I18

R28

J15

B

Y–GR

–B

Y–G

Y–GR

Body E

CU

<1–48>

W–B

Y–GY

–G

W–L

DEFOGRelay

GR–L

2

B–R

L–Y

B–R

L–Y

R ea r W indow D efoggerPow er Source

7. 5AACC

5 ID

IK8

W–G

1B2

1B1

1

6 7

S 5

IG

ACC STP

B–R

G–Y

GR

B–R

Stop Light S

W<

11–1>3

IJ28

B–R

10AECU–IG

3

4

IJ

A

12 8

KLS+ E

W–B

L–WW

–B

W–BA

K 3

EE GR–L

J 1

S hift Lock

Ignition SW

JunctionConnector

JunctionConnector

JunctionConnector

Rear WindowDefogger

Shift LockControl ECU

Key Interlock

Solenoid

JunctionConnector

J14

1

W–G

GR


IL Right KickPanel


A

A/C ECU(*2)<38–8>

* 1 : w/o LEXUS Navigation System* 2 : w/ LEXUS Navigation System

A




12

34

25

GX

470

222

140A ALT50A AM1

50A J/B

22

2

ACC

IG1

AM

1

3

BW

Bat

tery

W–L

11 1

22

6

I18

A12IL17

7. 5

AA

CC

15A

PWR

OU

TLET

21

53 IJ30

IC1

ID5

IH2

L–W

W–G

L–W

W–G

L–W

W–B

P–L W–B

W–BP

12

P 5

Po

we

r S

ou

rce

Ho

rnC

iga

rett

eL

igh

ter

Po

we

r O

utl

et

( 12

V)

ACC

SK

TR

elay

10A

CIG

IHLe

ft K

ick

Pane

l

A

2

IE10

12

35

IK13

ID1

Horn SW

1B10

1C10

11

H10

H 9

G–R

G–R

G–R G–R

W–G

W–G

10A

HO

RN

HO

RN

Rel

ay

12

2

1A20

Theft Deterrent ECU<1–24>

G–R

Hor

n ( H

igh)

Hor

n ( L

ow)

Igni

tion

SW

Power Outlet(Front)

Junc

tion

Con

nect

or

J11

Cig

aret

teLi

ghte

r

C 7

Combination SWC13

IJN

ear t

he R

ight

Sid

e of

Ste

erin

g C

olum

n

A

ILR

ight

Kic

kP

anel

J14

Junc

tion

Con

nect

or

J23

Junc

tion

Con

nect

or

2003 LEX

US

GX

470 (EW

D519U

)

M

1 2 3 4

26 GX 470

2

ACC

IG1AM1 L–Y4

Battery

B

2

2

W

2

140AALT

1

2

50AAM1

1

2

2

W–L Ignition SW

I18 IC2

15AAC115VINV

2

1

210AIG1NO. 2

IK7

GR

GR

–L

3

6

4

IH Left KickPanel

A

W–B

Main SWM 3

A17 IB2

L

L

2

1

2

3

5

2

2 2

A B

A A

W–B

JunctionConnector

J 2(A), J 3(B)

EB Front LeftFender

W–B

Y

6 IP4

AC115VINVRelay

C11 IR3

Y

Y

1

+B

AC1

3

AC2

7B W

1

V 7

B

B

BR Right QuarterPanel Inner

W–B

W–B

L

L

P ow er S ource P ower O u tle t (115V )

JunctionConnector

J11

4

E

W–B

W–B

B

(*1 )

(*1 )

* 1 : Shielded

JunctionC

onnector

J33

AC115V

E

B IND

P 6Power Outlet(115V)

4

VoltageInverter



12

34

27

GX

470

2

AC

C

IG1

AM1

4

Batte

ry

B

22

W

2

140A

ALT

12

50A

AM1

12

2

W–L

Igni

tion

SW

I18

L–Y

IC2

IHLe

ft K

ick

Pan

el

AIH2

IA14

10A

IG1

10A

EC

U–I

G

IA2

IJ28

GR–L

67

W–B W–B

Inne

rM

irror

I19

Junc

tion

Con

nect

or

J11

B–R

1A1

1B1

Po

we

r S

ou

rce

Au

tom

ati

c G

lare

–R

es

ista

nt

EC

Mir

ror

an

d C

om

pa

ss

B–R

B–R

E

EB–R

A12

ID2 B–R

21

B–Y

42

W–B

BM

Und

er th

eD

river

’s

Sea

t

Tens

ion

Red

ucer

Sole

noid

LH

T11

Buc

kle

SW

LH

B12

E

B–R

A11

IR3 B–R

21

B–Y

31

W–B

BRR

ight

Qua

rter

Pane

l Inn

er

Tens

ion

Red

ucer

Sol

enoi

d R

H

T12

Buc

kle

SW

RH

B13

Junc

tion

Con

nect

orJ2

2

Ele

ctr

ic T

en

sio

n R

ed

uc

er

2003 LEX

US

GX

470 (EW

D519U

)

M

1 2 3 4

28 GX 470

2

1

2

10AECU–B

2

SHO

RT P

IN

2

ACC

IG1AM1 4

10A E

CU

–IG

IC2

4 B

IG

5 A

+B

8 B

SYSB

2 A

SLD+

3 A

SLD–

1

2

M

P25

7 A

LFT+

9 A

LFT–

2

1

M

P22

8 A

RCL+

10 A

RCL–

2

1

M

P24

6 A

FRV+

4 A

FRV–

1

2

M

P21

1 A

GND

BMUnder the Driver’ s Seat

GR

LGY

L Y W V P BR G B

W–B

P19(A), P20(B)

W–R

Y–R

Battery

I18

P ow er S ource P ower S eat (D rive r’ s S ea t w / D riv ing P osition M emory)

Ignition SW

Power Seat ECU

Pow

er Seat Motor

(Driver’

s Seat Front V

ertical Control )

Pow

er Seat Motor

(Driver’

s Seat R

eclining Control )

Pow

er Seat Motor

(Driver’

s Seat S

lide Control )

2

2

2

2

F B

H A

W–B

JunctionC

onnector

J36 (A), J37 (B

)

C A A A

C B E B

B A

D B

JunctionConnector

J36(A), J37(B)

C7 ID2 A10 ID2 C1 ID2

B

B

B

W

W–L

W–R

2

2

2 2

1

1

1

1

140AALT

50AJ/B

50AAM1

2 2

IB4

1B4

IL4

1A3

IC1

30AD P/SEAT

IJ29

1A1

1B1

IJ28

W–R

W–R

Y–R

B–R

B–R

B–R

L–YW–L

L–W

E

EJunctionConnector

J13JunctionC

onnector

J22B–R

Y–R

W–R

W–R

Y–R

B–R

Front

Rear

3

1 4

2

1

M

YW

W

P23

P16

R H

B

Power Seat Control SW(Driver’ s Seat Lumbar Support Control)

Power S

eat Motor

(Driver’

s Seat Lum

bar S

upport Control )

MPX1

B1

Multiplex C

omm

unicationSystem

<1–27>

E1

E2

5

2

LG

E B

LG

BF

W–B

W–B

W–B

W–B

F B

Pow

er Seat Motor

(Driver’

s Seat Lifter C

ontrol )



12

34

29

GX

470

IJ32

IJ29

LG

Front

Rear

Up

Down

Front

Rear

Up

Down12 M

Y

L

L

96

1

12 M

B

G

G

105

21 M

BR

P

P

32

21 M

V

W

W

78

Front

Rear

4

2

3

14 21 M

Y

W

W

Front

Rear

96 21 M

Y

L

L

Front

Rear

32 21 M

BR

P

P

1

4

Y–R

R–L

Y–R

LGLGR–L

W–B

W–B

R–L

Y–R

AA

EB

EB

P25

P21

P24

P22

P23

P27

P26

J36(

A) ,

J37(

B)

FB

FB

HA

J36(A), J37(B)

FB

W–B

5

AA

EB

J34(

A) ,

J35(

B)

Po

we

r S

ea

t ( D

riv

er’

s S

ea

t w

/o D

riv

ing

Po

sit

ion

Me

mo

ry)

50A

J/B

2 2IC1

112 2

BL–W

22

W

Bat

tery

P17

P16

P18

30AP P/SEAT

30AD P/SEAT

Po

we

r S

ou

rce

W–B

FB

HA

W–B W–B

140A ALT

SLD

FFU

PR

CLF

LUP

SLD

RFD

WN

RC

LRLD

WN

B

E

RH

E1

B

E2

SLD

FR

CLF

SLD

RR

CLR

E

B

J34(

A) ,

J35(

B)

Lifte

rR

eclin

ing

Fron

t Ver

tical

Slid

eS

lide

Rec

linin

g

Junc

tion

Con

nect

or

JunctionConnector

Junc

tion

Con

nect

or

Junc

tion

Con

nect

or

Pow

er S

eat C

ontro

l SW

( Driv

er’

s Se

at L

umba

r S

uppo

rt C

ontro

l)P

ower

Sea

t Con

trol S

W( D

river

’s

Sea

t)Po

wer

Sea

t Con

trol S

W( F

ront

Pas

seng

er’

s Se

at)

Power Seat Motor(Driver’ s Seat Front Vertical Control)

Power Seat Motor(Driver’ s Seat Lifter Control)

Power Seat Motor(Driver’ s Seat Lumbar Support Control)

Power Seat Motor(Driver’ s Seat Reclining Control)

Power Seat Motor(Driver’ s Seat Slide Control)

Power Seat Motor(Front Passenger’ s Seat Reclining Control)

Power Seat Motor(Front Passenger’ s Seat Slide Control)

Und

er th

e D

river

’s

Seat

Und

er th

e Fr

ont

Pas

seng

er’

s Se

at

Po

we

r S

ea

t( F

ron

t P

as

se

ng

er’

s S

ea

t)

BN

BM

5IR

1

A10

ID2

2003 LEX

US

GX

470 (EW

D519U

)

M

1 2 3 4

30 GX 470

2

2

140A ALT

2

2

ACC

IG1AM1 4

W–L

B

1

1

2

2

I18

Battery

50A AM

1

2

10AIG1NO. 2

IC2

IK7

E

E

GR

–L

F A G A

H B G B

2

2

B B

B A

EB Front Left Fender

J 2 (A), J 3 (B

)

W–B

W–B

20ASEAT HEATER

2 2

2

IE20

GR

2

1

5

3

BG

AG

IR111 IR110

BH

AF

F B

H A

BMUnder the Driver’ s Seat

AH

BF

BNUnder theFront Passenger’ s Seat

IJNear the Right Side ofSteering Column

A

A B

E A

A B

E A

C1 IB4

4 6 4 6

2 42

3 1 3 1

5 1 5 1

B E B E

THR SWRTHL SWL

J14

W–B

W–B

R R–G

R

R–G

R–B

L–B

R–B

L–B

W–B

GR

–L

GR

–L

W–B

W–B

BR RBR R

B

W–B

B

W–B

LG

W–B

LG LG

LGLG

GR

–L

W–B

B–Y

L–Y

W

2

1

IG R

elay

CC

J 1

GR–L

GR

–L

9 IR1

LG LG W–B

W–B

LG

W–B

S ea t H ea te rP ow er S ource

3A16

63E

63A

GR

–L

A A

A

J15

GR–L

GR

IG E

RV SWSWRV

EIG

Ignition SW

JunctionConnector

JunctionC

onnector

JunctionConnector

JunctionConnector

JunctionConnector

J34(A), J35(B)

Seat Heater(Front Passenger’ s Seat)

S30

JunctionConnector

J34(A), J35(B)

JunctionConnector

J36(A), J37(B)

JunctionConnector

J36(A), J37(B)

Seat Heater

(Driver’

s Seat )

S29

S 4S 3

ID2C2

C4 ID2ID2C6

4

10AIG1

Seat Heater SWFront RH

Seat Heater SWFront LH



12

34

31

GX

470

2

50A

AM

1

2

112 2

W–L

140A ALT

2

30A

AM

2

2

12

W–R

12

SHORT PIN

22

B

2

10A

ECU

–B

2

12

2 7

AC

C

IG1

IG2

ST2

AM1

3 4 6AM

2

W–L

I18

W–R

W–R

W–G

L–Y

B–R

W–L

IG

7. 5

AG

AUG

E

4

6 ID

19A

W

15A

P

ILR

ight

Kic

kP

anel

A

66IJ

1 P

5 SW

OT

(*2)(*2)

P

(*1)

P

(*1)

14A IJ1

67

B(*2)B

4 DM

IN

(*2)

B(*1)B

(*1)

IJ1

11

V–R(*2)V–R

11 SP

D

(*2)

V–R(*1)V–R

(*1)

IJ1

39G–O

(*2)GR

9 DA

TA

(*2)

G–O(*1)G–O

(*1)

(*1)

Y–R

(*1)

Y–R

(*2) TH+

3

GR

(*2)

Y–R

27IJ

1IJ

141

Y–G(*2)Y–G

2 SG

(*2)

Y–G(*1)Y–G

(*1)

(*1)B–R(*1)

B–R

(*2) IG

12

B–R(*2)

B–R

40IJ

1IJ

131

GR

(*2)

GR

13 ACC

(*2)

GR

(*1)

GR

(*1)

(*1)W–R(*1)

W–R

(*2) +B

14

R(*2)

W–R

33IJ

1

TAIL

6

W–B(*1)

GN

D

1

W–B(*2)

W–B

61IJ

1

1E4

1E2

4IB

23

IB2


W–B

J23

A22

IJIC2 28

10A ECU–IG

IK

7. 5

AA

CC

ID5 8

21

A 1

Y–G

Y–R

GR

B–R

1B1

1B3

IL4

IB4

W–R W–R

L–Y

Po

we

r S

ou

rce

Ac

ce

ss

ory

Me

ter

* 1

: w/ L

EXU

S N

avig

atio

n Sy

stem

* 2

: w/o

LE

XU

S N

avig

atio

n S

yste

m

A/C ControlAssembly(*2)<38–8>

R–L

Battery

BR BR

7IO

1

9A

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33

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( Con

t. n

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12

34

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470

( Con

t. n

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12

34

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GX

470

( Con

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IG1IG18

SGND

11 IG1

23456

BR

GR

L–Y

20 19 16

+B ACC GND

15 IK2

BR

A

C

E

G

I

K

R–LGRBRBWRG

(Shielded)

BLGL

R 5(A), R 6(B), R 7(C), R 8(D), R 9(E)

B

C

E

G

I

K

M

2 IK21 IK2

GR

L–Y

B

D

F

H

J

BR

DVD Player Rear Seat Entertainment Display


2003 LEX

US

GX

470 (EW

D519U

)

M

13 14 15 16



WB

HP1L

HP1L

(Shielded )

(Shielded )

HP1R

HP1R

SGND

SG7

WW

AUXL

AUXL

(Shielded )

(Shielded )

AUXR

SGND

SG5

11 10 9 7 6 5

AUXR

A

C

E

G

I

K

R 5(A), R 6(B), R 7(C), R 8(D), R 9(E)

B

D

F

H

J B

R–LGRBRBWR

(Shielded)

LGL

14 IL1 15 IL1 16 IL1 2 IL1 3 IL1 4 IL16 IG1 124 IG1 12 IG123 IG15 IG1 IL1

1 C 2 C 3 C4 C 5 C 6 C 7 C 8 C 9 C 10 C 11 C 12 C

8 7 10 9 1

BU+B ACC TX– TX+ GND

+B2 ACC2 GAUXTX2– TX2+ GND1

G–B

BR–B

R–L

W B

G–W

Y LG LGW W Y

8

CE

17 IG1 18 IG1 19 IG1 20 IG1 21 IG1 22 IG1

10 IS111 IS112 IS11 IS12 IS13 IS1

7 IR48 IR49 IR416 IR417 IR418 IR4

16 15 14 13 12 11

R G B SYNC VR VG

G R W B YWWWWW

(Shielded )

(Shielded )

G R W B Y (Shielded)

AB

CD

EF

GH

IJ

K

13 C14 C15 C16 C17 C18 C

R2G2B2SYN2VR2VG2

WW

WB

GRWBY

GRWBY

W–B

(Shielded )

13 14 15 1 2 3

NTSC SGND SLD HP2R HP2L SGND

W W

(Shielded )

W W

(Shielded )

LM

NO

PQ

G

R–LGR

BLG

BRB

(Shielded)

W

L

RG

WW

(Shielded)WW

(Shielded)


R27

Rear S

eatE

ntertainment D

isplay

H12

Headphone Term

inalV

ideo Terminal

2003 LEX

US

GX

470 (EW

D519U

)

M O

VE

RA

LL ELE

CT

RIC

AL W

IRIN

G D

IAG

RA

M

17 18 19 20



5 A18 A21 A

MUTE TX– TX+

B LG L

Stereo Component AmplifierS15(A), S16(B)

A

C

E

G

I

K

B

D

F

H

J

L

N

P

M

O

Q

GRR–L

BLG

BRB

(Shielded)

W

L

RG

WW

(Shielded)WW

R 5(A), R 6(B), R 7(C), R 8(D), R 9(E)

6 IL1 7 IL1 8 IL1 10 IL1 11 IL1 12 IL1

19 C 20 C 21 C 22 C 23 C 24 C

W W W W

P L W B

(Shielded )

(Shielded )

(Shielded )

(Shielded )

SG6 HP2L HP2R SG6 SGN5 NTS4

7 B

SELD

IJ Near the Right Side ofSteering Column

A

W–B

JunctionConnector

J14

(Shielded )

BWRG

G G–B

FR+

+B2+BACCL+L–R+R–ASGD

FL+ FL–

B9B2

IC213IC212

R–L

R–L

R–L

A12A24 B

GR

F 9

21

B

1

B722 A 23 A 162011 A A

2

F10

12 IQ1 13 IQ1

1 B 8 B

FR–

AUI–AUI+

AUO+ AUO–

(*1 )

N 4

LGLLG L(*1 )

2 11

(*1 )

1 10

(*1 )

(*2 )

(*2 )

9 A

N–MU

PN

avigation EC

U<

33–6>

B–W

L LG

Front Door Speaker LH

Front Door Speaker RH

B–W B

(*1 )

ABR

* 1 : w/ LEXUS Navigation System* 2 : w/o LEXUS Navigation System

(Shielded )

4 A 3 A 2 A 1 A 6 A 7 E 5 E 8 E 3 E 9 E 4 E 10 E5 A 6 E 1 E

VR1 SYNC1 B1 G1 R1 VG1 NAVI VR SYNC B G R VG TX– TX+

LEXUS Navigation System<33–7><33–8>


Navigation ECU

19 A 20 A 21 A

SLDA SG3 NTS1

2003 LEX

US

GX

470 (EW

D519U

)

M

21 22 23 24

35 GX 470 (Cont’ d)

R ad io and P laye r (w / R ear S eat En ter tainmen t S ys tem)

AA

F12

1

G

Com

binationM

eter<37–4>

V–R

SPD

A13

YB

2

VPR

–L

R–B

1

GG–B

L–B

L–R

BR

BR

YB

R–B

R–L

Y

1

WTR–WFR+WFL–WFL+ML–ML+

GND E

+

RL+ RL–

–+–+

F11

–

W 6

3142

B12B13

C81 IN2 11 IN2

R22

21

B 8

12

2

B

B11

A15A2

IC28IC23

4

+ –

B14B5B15B6

–

R–L

2

G–B

IR3

4 B

F13

BD11C6 IR3

+

MR–

1

R–B

L–R

A 14 A

2

R

IR3C2

B3

IR3

3 3

F14

RR+

MR+

Y B

L–R

L–B

–+

10 B

R

2 1

B 9

1 2

R23

4

3

L–B

RR–

C4 BD12

IQ1 8 IQ1

1

A5 IR3A7 A9 IR3

W

B–W B

R W

R W

WB Y

IR3A3 IR3

(*4 )

(*4 )

(*4 )

(*4 )

B B

Front DoorSquawker LH

Front DoorSquawker RH

Front Door

Tweeter Speaker LH

Front Door

Tweeter Speaker R

H

Rear Door Speaker LH Rear Door Speaker RH

Woofer Speaker

(*5 )


2 1

CenterSpeaker

C 6

G G–B

(*4 )

(*4 )

(*3 )

(*3 )

A A B B B B A A

2 BH2 6 BH24 BH21 BH2

R WB Y (*4 )

(*4 )

(*4 )

(*4 )

3 A

7 IN1

TMUT

B1

G–R

A15

G–R

11

2 BC1 2 IE1

10 IN2

A

1 IE1

20 IN2

BC11

1 A

RW

B

B B

B Y W

YY

Y(*5 )

(*6 )

(*5 )

(*5 )

(*5 )

(*6 )B Y

(*5 )Y

Mayday EC

UM

8 (A), M

9 (B)

11 B

JunctionConnector

J12

ABR

JunctionConnector

J21

* 3 : 9 Speaker* 4 : 12 Speaker

* 5 : w/ LEXUS Link System (Mayday System)* 6 : w/o LEXUS Link System (Mayday System)

G(*3 )

(*3 )

(*5 )(*5 )

(*4 )

(*4 )

(*4 )

(*4 )

BR

Back Door Speaker RHBack Door Speaker LH



12

34

36

GX

470

( Con

t. n

ext

page

)

R 1

( A) ,

R 2

( B) ,

R 3

( C)

+BAC

C

1718

A10

IB4

7. 5

AA

CC

ID5

L–Y

L–Y

GR

C 3

222

22

140A ALT

SHORT PIN

111

222

2

ACC

IG1

AM

1

3

2

50A AM1 W

W–L B

W–G

Bat

tery

Ra

dio

an

d P

lay

er

( w/o

Re

ar

Se

at

En

tert

ain

me

nt

Sy

ste

m)

Po

we

r S

ou

rce

AR

–L

2

20A RADIO NO. 1

12

2

30A RADIO NO. 2

12

BG

R

C7

IB4R–L R–L

W–L

20A

IK

BR

GN

DA

CC

A11

BU A

1

GR

GR

L–Y

201

6C

9C

10C

45IJ

143

IJ1

44IJ

1

P

L

LG

P

L

LG

19

MU

TETX

+TX

–

MU

TETX

M+

TXM

–

CB

R

A32

1AN

T

B

B

A13

I18

62IJ

146

IJ1

34IJ

1

BR

L–Y

L–Y

L–Y

GR

GR

IJ1

51IJ

150

IJ1

49IJ

148

IJ1

47

2C

B

R+

W

C3

R–

R

C4

L+

G

C5

L–

(Shielded)

C1 S

GN

D

B5CD

R+

W

4CD

R–

R

3CD

L+

G

2CD

L–

(Shielded)

Ant

enna

Am

plifi

er

CD

Aut

omat

ic C

hang

er

Igni

tion

SW

Rad

io a

nd P

laye

r

21

43

22

22

EngineControlSystem<5–3>

ACC CUTRelay

GR

(*1)

(*1)

(*1)

Inst

rum

ent P

anel

Bra

ce L

H

17IG

118

IG1

19IG

1

1920

1

TXM

–TX

M+

MU

TE

L

P

B–R

W

W

LG

2019

18

R26

TXL–

TXL+

LMU

T

W–B

17 GN

D

ILR

ight

Kic

kPa

nel

W–B

BR

20IG

1W–B

W

W

LG

45IJ

143

IJ1

44IJ

1

16IG

115

IG1

14IG

1

6C

9C

10C

P

L

LG

B–R

L

LG

LG

W

W

MU

TETX

+TX

–

MU

TETX

+TX

–

2122

23

IK8

+BAC

C

1224

LG

LG

IG11

LG

13IG

1 LG

L–Y

* 1

: w/o

Rea

r Sea

t Aud

io S

yste

m

GR

L–Y

L–Y

A

Junc

tion

Con

nect

or

J23

L–Y

GR

* 2

: w/ R

ear

Seat

Aud

io S

yste

m

(*2)

(*2)

(*2)

(*2)

(*2)

(*2) (*2)

(*2)

(*2) (*2)

(*2)

(*2)

(*2)

(*2)

(*2) (*2)

(*2)

(*2)

(*1)

(*1)

(*1)

2A17

2A7

BR

BR

21GN

D BR BR

BR

BR

19IH

1

Rea

r Se

at A

udio

Con

trolle

rGRGR

GR

(*2)

(*2)

(*2)

(*2)

( *2)

( *2)

(*2) (*2)

(*2)

AA

A12

IB4

IB4

C12

GRGR

GR


2003 LEX

US

GX

470 (EW

D519U

)

M

5 6 7 8


R ad io and P layer (w /o Rear S ea t E n terta inmen t S ystem)

189 A 19 A 8 A

L+ L– R+

A

R–

P V

B–W

(Shielded )

GRWB

21 IJ1 22 IJ1 7 IJ1 8 IJ1 23 IJ1

B W R G

CBR

GR

R–L

B

A

4 IJ1

4 IG1

15 B

9

BB

W

RSA R+

RSR+

3 IJ1

5 IG1

16 B

8

WW

W

RSA R–

RSR–

18 IJ1

6 IG1

17 B

7

RR

W

RSA L+

RSL+

17 IJ1

7 IG1

18 B

6

GG

W

RSA L–

RSL–

16 IJ1

3 IG1

10

(Shielded )

(Shielded )

(Shielded )

SLD

10 IJ1

2 IG1

19 B

11

L–BL–B

LG

RMUTE

RMUT

5 A 15 A 7 A

TX+ TX– MUTE

70 IJ1 71 IJ1 9 IJ1

L LG

B

5 A18 A21 A

MUTE TX– TX+

B LG L

10 IG1

3

WW

W

HP1R

HP1R

12 IG1

1

(Shielded )

(Shielded )

(Shielded )

SGND

SGND

22 IG1

15

WL

W

HP2R

HP2R

23 IG1

14

WG

W

HP2L

HP2L

24 IG1

13

(Shielded )

(Shielded )

(Shielded )

SGND

11 IG1

2

WB

W

HP1L

HP1L

10 9 11 1 2 3

SGND

6 B 8 B 7 B

6 IJ1 19 IJ1 20 IJ1

SWGND STSW2 STSW1

W P–B

LG–R

W P–B

LG–R

10 11 12

EAU AU2 AU1

C13

R26

A

B

C

D

E

F

H

G

(Shielded )

R–L

GR

BR

B

W

R

G

(Shielded)


H12


15 IL1 16 IL1 14 IL1 8 IL1 7 IL1 6 IL1

10 B 9 B

TX– TX+

Multi–D

isplay<

34–8>

Combination SW

Rear Seat Audio Controller

Headphone Terminal

W B

(*2 )

(*2 )

(*2 )

(*2 )

(*2 )(*2 )

(*2 )

(*2 )

(*2 )

(*2 )

(*2 )(*2 )

(*2 )

(*2 )

(*2 )

(*2 )(*2 )

(*2 )

(*2 )

(*2 )

(*2 )

(*2 )

(*2 )

(*2 )(*2 )

(*2 )

(*2 )

(*2 )

(*2 )

(*2 )(*2 )

(*2 )

(*2 )

(*2 )

(*2 )

(*2 )

* 2 : w/ Rear Seat Entertainment System



910

11

12

36

GX

470

(C

ont’

d)

Ra

dio

an

d P

lay

er

( w/o

Re

ar

Se

at

En

tert

ain

me

nt

Sy

ste

m)

F12

1

G


V–R

* 3

: w/ L

EXU

S N

avig

atio

n Sy

stem

SP

D

A13

* 4

: w/o

LE

XU

S N

avig

atio

n S

yste

m

(Shielded)

B

W

R

G

Y

B

2

V

PR–L

R–B

1

G

G–B

L–B

L–R

BR

BR

Y

B

R–B

R–L

Y

G

G–B

FR+

1

WTR

–W

TR+

WFL

–W

FL+

ML–

ML+

+B2

+BAC

CL+

L–R

+R

–A

SG

D

GN

DE

FL+

FL–

* 8

: w/o

LE

XU

S L

ink

Sys

tem

(M

ayda

y Sy

stem

)

+

RL+

RL–

–+

–+

F11

–

W 6

31

42

B12

B13

C8

1IN

211

IN2

R22

21

B 8

12

2

B

B11

B9

B2

IC2

13IC

212

A15

A2

IC2

8IC

23

4

+–

B14

B5

B15

B6

R–L

R–L

R–L

–

R–L

2

G–B

A12

A24

B

GR

IR3

F 9

4B

F13

21

B

1

B

BD1

1

722

A23

A16

2011

AA

C6

IR3

+

MR

–

1

R–B

L–R

A14

A

2

R

IR3

C2

B3

IR3

33

F14

RR

+

MR

+Y

B

L–R

L–B

–+

2

F10

12IQ

113

IQ1

1B

8BFR

–

10B

R

21

B 9

12

R23

4

3

L–B

RR

–

C4

BD

12

IQ1

8IQ

1

1

A5

IR3

A7

A9

IR3

W

B–W

B

R

W

R

W

W

B

Y

IR3

A3IR

3

(*6)

(*6)

(*6)

(*6)

* 7

: w/ L

EXU

S L

ink

Sys

tem

( May

day

Sys

tem

)

AUI–

AU

I+

AU

O+

AU

O–

(*3)N 4

LG

L LG

L(*3)

211(*3)

110

(*3)

(*4)

(*4)

* 6

: 12

Spea

ker

* 5

: 9 S

peak

er

9A

N–M

UPNavigation ECU<34–6>

B–W

L

LG

Fron

t Doo

r Spe

aker

LH

Fron

t Doo

rS

peak

er R

H

Fron

t Doo

rS

quaw

ker L

HFr

ont D

oor

Squ

awke

r R

H

Front DoorTweeter Speaker LH

Front DoorTweeter Speaker RH

Rea

r D

oor

Spea

ker

LHR

ear D

oor

Spe

aker

RH

Woo

fer

Spea

ker

A B C D E F G H

Ster

eo C

ompo

nent

Am

plifi

erS1

5(A)

, S16

( B)

B–W

B

Junc

tion

Con

nect

or

J21

AB

BA

R–L GR

BR B W R G ( Shi

elde

d)2

1

Cen

ter

Spe

aker

C 6

G

G–B

(*6)

(*6)

(*5)

(*5)

(*3)

AA

BB

BB

AA

2B

H2

6B

H2

4BH

21

BH2

R

W

B

Y

(*6)

(*6)

(*6)

(*6)

3A

7IN

1

TMU

T

2B

C1

2IE

1

10IN

2

15A

1B

11A

1BC

11

IE1

20IN

2

1A

G–R G–R

R

W

B

B

B

B

Y

W

Y

Y

Y

(*8)

(*7)

(*7)

(*7)

(*7)

(*8)

BY

Y(*7)

Mayday ECUM 8(A), M 9(B)

(*7)

11B

Junc

tion

Con

nect

or

J12

(*5)

(*5)

(*7) (*7)

(*6)

(*6)

(*6)

(*6)

BR

Back

Doo

r Sp

eake

r LH

Bac

k D

oor S

peak

er R

H

Nav

igat

ion

ECU


Memo



12

34

37

GX

470

( Con

t. n

ext

page

)

W–L B

2

W–R

7

ACC

IG1

IG2

ST2

AM

1

6A

M2

I18

ID6

IG4

R–L

20A

19A

14C

C 9

( A) ,

C10

( B) ,

C11

( C) ,

C12

( D)

10A

BR–R

Po

we

r S

ou

rce

Co

mb

ina

tio

n M

ete

r

12

22

2

30A AM2

W–R

4C

BR

SHORT PIN

12

32

D8

ID2

D7

ID2

BR–R

BR

F15

7. 5

AG

AU

GE

IK11

IG1

V–R V–R

B–R

2C

B–R

B–R

8IO

35

IO1

B–R

B–R

B–R

15C

5IA

V–RMoon RoofControl ECUand Motor<21–2>

Body ECU<1–48>

3B1

3D2

3A1

3A11

3A2

3D1

V–RAccessoryMeter<31–2>

V–RNavigation ECU<33–6><34–7>

V–RMulti–Display<33–7><34–7>

V–RStereo ComponentAmplifier<35–21><36–10>

V–RA/C ControlAssembly(*1)<38–12>

2 1

2

10A DOME

9C

12A

11C

19C

13A

17C

16A

17A

Speedometer

Tachometer

Fuel

Temp.

3E

V–R

1

VSC System<15–12>

Taillight andIlluminationSystem<8–11>

MultiplexCommunicationSystem<1–45><1–46>

Door

Illumination

Fuel

Seat Belt

Buzzer

InclinationSensor


O/D

TR

IP

4IP

3 R

R

R

Com

bina

tion

Met

er

Fuel Sender

Igni

tion

SW

Battery


B–R

3IP

4

A/C ECU(*2)<38–12>

* 2

: w/ L

EXU

S N

avig

atio

n Sy

stem

* 1

: w/o

LE

XU

S N

avig

atio

n S

yste

m

2003 LEX

US

GX

470 (EW

D519U

)

M

5 6 7 8

37 GX 470 (Cont’ d)

Comb ina tion M e te r

9 A15 A 14 A

12 C 5 C 3 C 13 C 13 D 18 A 13 B B14 16 B 17 B 18 B 19 B 6 B 2 B 7 B 20 B

6 A

3C4 3B3 3B4 3E3

B–W

B–W

B–W

B–W

Data Link

Connector3

<5–6>

Suspension Control

ECU

<16–6>

P–B

B–Y

R–L

R–L

7 IO1

Taillight andIllum

ination System

<8–11>

Electronically Controlled Transmissionand A/T Indicator System<6–9><6–10><6–11><6–12>

L 2 3 D N R P

A/T P

Front Fog

Turn RH

Turn LH

Security

Front Fog Light System<

12–3>

Multiplex C

omm

unicationS

ystem<

1–45>

Turn Signal and

Hazard W

arningLight S

ystem<

10–6>

Center D

ifferentialLock<

18–4>

(Cont. next page)

4 B

High Beam

Multiplex C

omm

unicationS

ystem<

1–45>M

ultiplex Com

munication

System<

1–45>

5 B

BR

BR

9 IO3

C 9(A), C10(B), C11(C), C12(D)Combination Meter

Accessory M

eter System<

31–2>

Engine C

ontrolM

odule<5–15>

Park/Neutral

Position SW

<2–2>

Injector No. 1

<5–10>

Engine C

ontrolM

odule<5–17>

15 B

4

3 D

Head

2 D

ILRight KickPanel

Rear Bank ofLeft Cylinder Head

EG

A

JunctionConnector

J23

W–B

2003 LEX

US

GX

470 (EW

D519U

)

M O

VE

RA

LL ELE

CT

RIC

AL W

IRIN

G D

IAG

RA

M

9 10 11 12

37 GX 470 (Cont’ d)

Comb ina tion M e te r

11 A 1 A A2 3 A D4 D10 4 A A7 D15

HI N LO

OFF

CR

UIS

E

Malfunction

Indicator Lamp

2nd STR

T

A/T O

IL TEM

P

Center D

iff. Lock

Center D

ifferential Lock System

<18–4>

Electronically Controlled

Transmission and

A/T Indicator System

<6–7>

Engine Control S

ystem<

5–9>

Cruise C

ontrol System

<7–4>A

ctive Height C

ontrol Suspension andE

lectric Modulated A

ir Suspension

System

<16–7>

<16–8>

(Cont. next page)

C 9(A), C10(B), C11(C), C12(D)

LG–B

6 IO1

1 O 1

LG–B

8 D 9 D

Charge

Oil P

ressure

Charging System

<4–3>

Combination Meter

Oil P

ressure SW

Electronically Controlled

Transmission and

A/T Indicator System

<6–7>

8 A

Washer

Y–R

21 IP3

Y–R

2

1

EBFront LeftFender

W–B

WasherLevelSensor

W 1

HEIGHT CONTROL

2003 LEX

US

GX

470 (EW

D519U

)

M

13 14 15 16

37 GX 470

LG

13 IP5

B B

B A

1

2

LGLG

J 7 (A), J 8 (B

)

14 D 20 D 18 D 16 D10 B8 B9 B8 C

VSC System<15–11><15–12>

SR

S

BRA

KE

ABS

DA

C

Slip

VSC

OFF

VSC

TRA

C

SRS

System<

14–6>

Combina tion M ete r

C 9(A), C10(B), C11(C), C12(D)

EA FrontRight Fender

W–B

Combination Meter

JunctionC

onnector

B 1

Brake Fluid

Level Warning SW



12

34

38

GX

470

( Con

t. n

ext

page

)

10A ECU–B

2

2 2

1

2

12

2 2

140A ALT

2

50A AM1

50A HEATER

22

22

11

2

ACC

IG1

AM

14

2

W–L

W

10A IG1

IE20

IC2

IK7

E

35

21

4

22

22

BB

BA EB

12 M

7. 5A HEATER NO. 2

2 2

A14

IB4

34

G–OG–O

IL

A12

21

35C

22

22

11IB

3

C11

IB4

3IO

1

C

EE

E

DD 41

22IP

3E

C D E

L–Y

GR

–L

B–Y

L

LG–B

LG–R

W–R

R

W–L

R B–Y

L

B–Y

L

W–L

W–B

GR–L

GR–L

GR–L

GR–L

BR–Y

L–B L–B L–B

LG–R LG–RGR–L

B

W–B

B 2

P 3

I18

1

21

J 1

Air

Co

nd

itio

nin

g

IL4

IB4

SHORT PIN

Battery

HE

ATE

RR

elay

+BV

M

GN

DSI

LG–B

GR–L

MG

CLT

Rel

ay

GR

–L

GR

–L

W–R

GR

2

W–B

J 2(A), J 3(B)

Po

we

r S

ou

rce

1E3

1B37

A1

A

GR–L

W–R W–R

GR–L

IG+B

GR–L

G–O

EE

21

LG–R

P 2

LG–R

GR–L

L–B

3D6

3E6

A 3

GR

BR–Y

A13

( A) ,

A14(

B), A

15( C

)

30A RR A/C

1

2

2

R–B

5IP

4 R–B

BA

R–B

J19F 7

A16

IB4

GR

–L

GR–L

B B

B

J 9

A/C MagneticClutch

Blower MotorLinear Controller

Front BlowerMotor

Igni

tion

SW

Junc

tion

Con

nect

or

Junction Connector

JunctionConnector

JunctionConnector

Pressure SW

Pressure SW

Junc

tion

Con

nect

or

J 1

Junc

tion

Con

nect

or

J23

Fron

tLe

ftFe

nder

Rig

ht K

ick

Pan

el

GR–L

22

CDS FANRelay

22

5 3

1 2

W

L

L–R

20A CDS FAN

2

2 1

32

12 M

P 3

A 2L–B

EA

W–B

W–B

W–B

A/C CondenserFan Motor

Pressure SW

Fron

t Rig

htFe

nder

Co

nd

en

se

rF

an

W

C2

IB4

1IP

2

3


21

L–R

L–R W–B

N 3Noise Filter(Condenser Fan)

10A IG1 NO. 2

A/C

Con

trol

Ass

embl

y(*2

)A

/C E

CU

( *1)

* 2

: w/o

LEX

US

Nav

igat

ion

Syst

em*

1 : w

/ LE

XU

S N

avig

atio

n S

yste

m

2003 LEX

US

GX

470 (EW

D519U

)

M

5 6 7 8


C

D

E

L

LG–B

LG–R

C7 4 B 6 C

2

1

26 A 13 A 9 A 5 A 4 A

2B5

52A

5 C

A

B

LG–R

L

LG–B

P V–Y

V–W

V–R

V–W

PY–G

Y–G

P

Y–G Y–G Y–G

G–O

PSW FRHR BLC S5 TR TPD AMCD AMHD TAMIN

GND VZ

MAXCOOL

PT MAXHOT

A24

A13(A), A14(B), A15(C)

A16

* 2 : w/o LEXUS Navigation SystemA ir C ond ition ing

16 IH1

LG–B

3 B

R

RRDEF

DEFOG Relay<24–2>

25 C

Y–B

S–FDEF

8

S–FDEFS–TEMPP+

9

S–TEMPP+

LG

C23

10

S–TEMPP–

24 C

O

S–TEMPP–L–AUTO

B

P

18

L–AUTO

14

14

R

B

L–FRS

15

L–FRSL–REC

17

L–REC

B

V

13 12

L–R

B

L–RDEF

18

L–RDEF

L–FDEF

B

G–R

19

L–FDEF

11

7

S–RDEFS–F/R

6

S–R/F

G

C20 26 C

GR

S–RDEFS–AUTO

R–B

C2719 C

B–O

S–TEMPD–

3

S–TEMPD–S–AUTO

42

S–TEMPD+S–OFF

5

S–OFF

L

C17 18 C

W

S–TEMPD+

(*1 )

H131 221211

ILL–ILL+GNDIG

GR

–L

W–B

Taillight and

Illumination S

ystem<

8–10>

17 A

Y–GY–G

SG

Y–G

A

BR–B

GR–L

GR

–L

GR–L

R–B

W–B

C

D

E

(*1 )

(*1 )

(*1 )

(*1 )

(*1 )

(*1 )

(*1 )

(*1 )

(*1 )

(*1 )

(*1 )

(*1 )

(*1 )

(*1 )

(*1 )

G–O

Accessory Meter

<31–3>

(*1)

A/C R

oom Tem

p. Sensor

Air Mix C

ontrolServo M

otor LH

Heater Control SW

2 1

3 4 5

ACAN

13

A/C Control Assembly(*2)A/C ECU(*1)


2003 LEX

US

GX

470 (EW

D519U

)

M O

VE

RA

LL ELE

CT

RIC

AL W

IRIN

G D

IAG

RA

M

9 10 11 12


Air C ond ition ing

22 A 2 B 1 B

3 4 5

2 1

2D5

Y–G

P–B

P–L

P–G

Y–G P

TPI AIR AIF

SG S5

TPI MREC MFRS

A

B

Y–G

23 A 6 B 5 B

2C5

LG–R

LG

LG–R

Y–G P

TPM DEF FACE

GND VZ

PT DEF FACE

10 A 2 A 3 A

2A15

L–W

L–R

L–Y

Y–G P

TPP AMHP AMCP

GND VZ

PT MAXHOT

MAXCOOL

2

1

14 A 12 A 11 A

2 1

TSR TSL

9 C 3 C

A17

A18

8 B 8 C 30 C 21 B

LEXU

S N

avigation System

<33–4>

<34–4>

Com

bination Meter

<37–4>

FRTE

Y–G

GY–G

R B

B R

TSP TSD

V–R

P–B

Y–R

Y–G

Y–R

Y–G

SPDTWI THE ACLD MPX+ ACS

A13(A), A14(B), A15(C)

3D8 3D7

3E8 3E7

Y–G Y–G

GR–L

R–B

W–B

C

D

E

GR–L

R–B

W–B

A

B

C

D

Y–G

(*1) (*1)


543

21

A/C

Solar Sensor

A/C

Thermistor

Air Inlet C

ontrolS

ervo Motor

A23

Air V

ent Mode C

ontrolS

ervo Motor

A26

Air M

ix Control

Servo M

otor RH

A25

1

543

2

2 II1 3 II1

Engine Control

Module<

5–15>

20 IH1

WW

Engine C

ontrolM

odule<5–15>



2003 LEX

US

GX

470 (EW

D519U

)

M

13 14 15 16

38 GX 470 (Cont’ d)

R ear A ir C onditioning

A

IL Right KickPanel

A13(A), A14(B), A15(C)

6 A 22 B

W–B

GND VER1

W–B

W–B

W–B

W–B

IK117

GR–L

R–B

21 A

RRTE

8 IR2

RRMGV

V–Y

B17

10 IR2L–O

IR29

GR

–LG

R–L

13 IR2

V–Y

L–O

GR–LGR–LGR–L

R–B

Y–GA

B

C

D

W–B

(*1 )

(*1)


J23

2 BI1 3 BI1

2

1

2

1

V L–O

GR

–L

5 BI1

IR2

RRBLW

W–B

BR

Y–GIR212

19 B

RRVM

1117 IR2

Y–G

B

B–R

RRHR

B

B–R

20 B

G–B

IR214

B24

Right Quarter Panel Inner

W–B

G–B

8 BI1 7 BI1 1 BI1

4

2

1

5

3

24

3 1

B–R B

B–Y

W–B

R–W

G–B

4 BI1

10 BI1Y

–G

9 BI1

R–B

1

2

M

W–B

W–B

R–W

GR–L

R–B

Y–G

R20

R19

R21

R17

JunctionConnector

Rear C

ooler Thermistor

Rear C

ooler Magnetic

Valve

Rear C

ooler Relay

Rear C

oolerB

lower M

otor


24 A

Mayday E

CU

<32–6>

O

TEL IN

(*2 )

MPX–

C22

B

1E7

1C7

B

1 IK1

B

4

1

IG+

MPX–

GR

–L

C

C

GR

–L

JunctionConnector

J25

R 4RearCooler SW

20 IK1

5

GND

W–B

B

B

W–B

W–B

W–B


R30

Rear C

oolerP

ower Transistor

overall electrical wiring diagram (from april 2003)gxewd.pdf2003 lexus gx 470 (ewd519u) overall...

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