lexus_gs300_gs430_service_manual 2

153
GS 430/300 (EWD423F) 5 INTRODUCTION A This manual consists of the following 9 sections: No. Section Description INDEX Index of the contents of this manual. A INTRODUCTION Brief explanation of each section. B HOW TO USE THIS MANUAL Instructions on how to use this manual. C ABBREVIATIONS Defines the abbreviations used in this manual. D RELAY LOCATIONS Shows position of the Electronic Control Unit, Relays, Relay Block, etc. This section is closely related to the wiring diagram. E ELECTRICAL WIRING ROUTING Describes position of the Parts Connectors, Ground points, etc. This section is closely related to the wiring diagram. F CONNECTOR LIST Describes the form of the connectors for the parts appeared in this book. This section is closely related to the wiring diagram. G CONNECTOR INFORMATION Indicates the reference page (See Page) showing the part name corresponding to the part number, and the installation position of the part in the vehicle. (For French, Spanish, German manuals only) H PART NUMBER OF CONNECTORS Indicates the part number of the connectors used in this manual. I OVERALL ELECTRICAL WIRING DIAGRAM Provides circuit diagrams showing the circuit connections. English

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Page 1: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

5

INTRODUCTION A

This manual consists of the following 9 sections:

No. Section Description

INDEX Index of the contents of this manual.

A

INTRODUCTION Brief explanation of each section.

B HOW TO USE THISMANUAL Instructions on how to use this manual.

C ABBREVIATIONS Defines the abbreviations used in this manual.

D RELAY LOCATIONS Shows position of the Electronic Control Unit, Relays, Relay Block, etc.This section is closely related to the wiring diagram.

E ELECTRICALWIRING ROUTING

Describes position of the Parts Connectors, Ground points, etc.This section is closely related to the wiring diagram.

F CONNECTOR LIST Describes the form of the connectors for the parts appeared in this book.This section is closely related to the wiring diagram.

G CONNECTORINFORMATION

Indicates the reference page (See Page) showing the part name corresponding tothe part number, and the installation position of the part in the vehicle.(For French, Spanish, German manuals only)

H PART NUMBER OFCONNECTORS Indicates the part number of the connectors used in this manual.

IOVERALLELECTRICALWIRING DIAGRAM

Provides circuit diagrams showing the circuit connections.

En

glish

Page 2: Lexus_GS300_GS430_service_manual 2

6

GS

430/300 (EW

D423F

)

B H

OW

TO U

SE

TH

IS M

AN

UA

L

������

������

������

1 2 3 4

HOW TO READ THIS SECTION

ACC

IG1

ST1

IG2

ST2

AM2

1

2

6 EA4

7 EA3

2 A 2 B

1 A 1 B

4B

5A

B

1B

EA

1

3C15

3C7

41 6

1

1 2

1

3 4

2 3

1

2

4 3

1

1

3

6

5

4

7

4 EA3

12 EA1

BO25

21 EA3

ID ECEA

1

2

1

2

1

2

1

2

16 BS1

1

2

M

EA317 1

4

8

6

9B

W

W-R

B-W

B-R

B-L B-L

B-W

B-W(22R-E)

B-W

INJECTOR

W-R

R-G

B

BR

B

GR

Y-R

B-W

Y-R

BR-W

G

G-R

Y-R

L-Y

Y-R

G-Y

GR-B

W-BR-W

R-G

BR

W-R

W-R

Y-R

R-Y

B-W

Y-R

Y-R

W

B-R

WR W-R

W-R

W

B-L

B-W

B-W

B-W

B-R

B-R

B-R

B-R

B-R

B-R

W-R

W-R

W-R

W-R B

R

BR

W-B

W-B

R-G

Y-R

W-B

B-R

Y-R

B

Y-R

W-B

B-W

G

B-W

W-B

B-R

R-Y

W-R

B-W

BR

100A A

LT

40A A

M1

30A A

M2

STARTERRELAY

4A

2A

1A

7

(22R-E)(2L-T)

1 2

7. 5AST

7. 5AIGN

S37STARTINJECTORTIME SW

C24COLD STARTINJECTOR

To Emission ECU<9-8>

BATTERYB

-W

STARTER

Left front fender

R-G

C19CIRCUITOPENINGRELAY

V 5VOLUME AIR FLOW METER

H11HEATEDOXYGENSENSOR

K 2KNOCK SENSOR

15AEFI

(Shielded)

EFI MAINRELAY

Left front fender Left kick panel

R-G

I 9NO

. 1

I11N

O. 3

I10N

O. 2

I12N

O. 4 F37

FUELPUMP

D 1DATA LINKCONNECTOR 1

FP

OX1

+B

T1

VF

Starting

B-W

B-L

(2L-T)

1 A1B

R

AM1

I 6    ,

IGNITION SW

A B

A

B

S40

S41

S38

S39

A

B

B-W

2

Intakemanifold RH

BR

E1

3

(2L-T)

(22R-E

)

(2L-T)

(2L-T)

B-W

R-G

Y-R

Y-R

Y-R

W-R W-R

B

8B

A

B

C

D

E

F

G

H

I

K

L

M

N

O

P

Q

R

S

J

Power Source Engine Control

1

R-Y

B

BR

GR

(22R-E)

BR-W

G

G-R

L-Y

GR-B

G-Y

W-R

(2L-T)

BR

(22R-E

)

* The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the wiring diagram section.

2

2 22

[A]

[B][C]

[D]

[E][G]

[F]

[H]

[I]

[J]

[K]

[L]

English

Page 3: Lexus_GS300_GS430_service_manual 2

[G] : Indicates related system.

[H] : Indicates the wiring harness and wiring harness connector.The wiring harness with male terminal is shown with arrows ( ).Outside numerals are pin numbers.

[I] : ( ) is used to indicate different wiring and connector, etc.when the vehicle model, engine type, or specification is different.

[J] : Indicates a shielded cable.

[K] : Indicates and located on ground point.

[L] : The same code occuring on the next page indicates that thewire harness is continuous.

Female Male ( )

Junction connector in this manual include a short terminal which isconnected to a number of wire harnesses. Always perform inspectionwith the short terminal installed. (When installing the wire harnesses,the harnesses can be connected to any position within the shortterminal grouping. Accordingly, in other vehicles, the same position inthe short terminal may be connected to a wire harness from a differentpart.)Wire harness sharing the same short terminal grouping have the samecolor.

HINT :

Junction Connector

Same ColorShort Terminal

[A] : System Title

[B] : Indicates the wiring color.Wire colors are indicated by an alphabetical code.

[C] : The position of the parts is the same as shown in the wiringdiagram and wire routing.

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

The numbering system for the overall wiring diagram is the same asabove.

[E] : Indicates a Relay Block. No shading is used and only the Relay BlockNo. is shown to distinguish it from the J/B.

B = Black W = White BR = BrownL = Blue V = Voilet SB = Sky BlueR = Red G = Green LG = Light GreenP = Pink Y = Yellow GR = GrayO = OrangeThe first letter indicates the basicwire color and the second letterindicates the color of the stripe.

Example: L – Y

L(Blue)

Y(Yellow)

Numbered in orderfrom upper left tolower right

Numbered in orderfrom upper right tolower left

Female Male

Example:

Example: Indicates Relay Block No.1

[F] : Junction Block (The number in the circle isthe J/B No. and the connector code is shownbeside it). Junction Blocks are shaded to clearlyseparate them from other parts.

3C indicatesthat it is insideJunction BlockNo.3

Example

����������������������������

GS

430/300 (EW

D423F

)

7

BEnglish

Page 4: Lexus_GS300_GS430_service_manual 2

∗ The titles given inside the components are the names of the terminals (terminal codes) and are not treated as beingabbreviations.

8

GS 430/300 (EWD423F)

C ABBREVIATIONS

ABBREVIATIONS

The following abbreviations are used in this manual.

ABS = Anti–Lock Brake System

A/C = Air Conditioner

ACIS = Acoustic Control Induction System

A/T = Automatic Transmission

CD = Compact Disc

COMB. = Combination

DLC3 = Data Link Connector 3

EC = Electrochromic

ECT = Electronic Control Transmission

ECU = Electronic Control Unit

EVAP = Evaporative Emission

G.C.C. = Gulf Cooperation Council

HID = High Intensity Discharge

J/B = Junction Block

LED = Light Emitting Diode

LH = Left–Hand

LHD = Left–Hand Drive

O/D = Overdrive

PPS = Progressive Power Steering

R/B = Relay Block

RH = Right–Hand

RHD = Right–Hand Drive

SRS = Supplemental Restraint System

SW = Switch

TEMP. = Temperature

TRC = Traction Control

VSC = Vehicle Stability Control

VSV = Vacuum Switching Valve

VVT = Variable Valve Timing

w/ = With

w/o = Without

En

glish

Page 5: Lexus_GS300_GS430_service_manual 2

22

GS 430/300 (EWD423F)

D RELAY LOCATIONS

[Engine Compartment](LHD)

Headlight CleanerControl Relay

Headlight ControlECU LH

Engine andECT ECU

Engine RoomNo.1 R/B

Headlight ControlECU RH

Engine RoomNo.2 R/B

Engine RoomNo.3 R/B

ECU Box Headlight Beam LevelControl ECU

(RHD)

Headlight CleanerControl Relay

Headlight ControlECU LH

Engine andECT ECU

Engine RoomNo.2 R/B

Headlight ControlECU RH

Engine RoomNo.1 R/B

Engine RoomNo.3 R/B

ECU Box Headlight Beam LevelControl ECU

Page 6: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

23

D

[Instrument Panel](LHD)

Body ECUNo.1

Daytime RunningLight Relay

Passenger SideR/B

Shift LockControl ECU

Driver SideJ/B

PPS ECU

ABS & TRC &VSC ECU

GatewayECU

Rear FogLight Relay

Transponder KeyAmplifier

InstrumentPanel J/B

Center AirbagSensor Assembly

Tilt and TelescopicECU

A/C ControlAssembly

Stereo ComponentAmplifier

Body ECUNo.2

Passenger SideJ/B

(RHD)

Body ECUNo.2

PPS ECU

Driver SideR/B

Shift LockControl ECU

PassengerSide J/B

PassengerSide R/B

ABS & TRC &VSC ECU

Transponder KeyAmplifier

Instrument PanelJ/B

Center AirbagSensor Assembly

Stereo ComponentAmplifier

Tilt and TelescopicECU

A/C ControlAssembly

Body ECUNo.1

GatewayECU

Driver SideJ/B

Page 7: Lexus_GS300_GS430_service_manual 2

TelephoneTransceiver andSpeaker Relay

Auto AntennaControl Relayand Motor

Light FailureSensor

Moon RoofControl ECU

Front Passenger Door ECU (LHD)Driver Door ECU (RHD)

Navigation ECUFuel PumpControl ECU

Rear DoorRH ECU

Wireless DoorLock Control ECU

Rear DoorLH ECU

Driver Door ECU(LHD)Front PassengerDoor ECU (RHD)

24

GS 430/300 (EWD423F)

D RELAY LOCATIONS

[Body]

Page 8: Lexus_GS300_GS430_service_manual 2

Power Seat ECU (RHD)Power Seat ECU (LHD)

GS 430/300 (EWD423F)

25

D

[Seat]

Page 9: Lexus_GS300_GS430_service_manual 2

3

1

4

25

1

2

3

2

1

3

5

21

12

12

12

12

1 2

21

12

1 2

1

2

345

2 1(∗ 3)

15A

2 1H-LP L UPR(∗ 1)

10A

2 1H-LP L LWR

15A2 1H-LP R LWR

20A1 2ECU-B1

10A1 2HORN

15A1 2ETCS

15A1 2AM2

15A1 2TEL

10A1 2TURN-HAZ

25A1 2EFI

5A1 2ALT-S

30A1 2RADIO NO.1

10A2 1MPX-B

ENG MAIN Relay

STARTER Relay

EFI Relay

30A RDI FAN Fuse(for Medium Current)

30A CDS FAN Fuse(for Medium Current)

50A FAN MAIN Fuse(for Medium Current)

50A HEATER Fuse(for Medium Current)

HEAD LP Relay

40A MAIN Fuse(for Medium Current)

30A H-LP CLN Fuse(for Medium Current)

40A ABS NO.2 Fuse(for Medium Current)

120A ALT Fuse(for High Current)

60A ABS NO.1 Fuse(for High Current)

∗ 1 : w/o Daytime Running Light∗ 2 : w/ Daytime Running Light∗ 3 : 10A H-LP R UPR (∗ 1), 30A DRL No.1 (∗ 2)

26

GS 430/300 (EWD423F)

D RELAY LOCATIONS

LHD : Engine Compartment Right (See Page 22)1 : Engine Room No.1 R/B

RHD : Engine Compartment Left (See Page 22)

Page 10: Lexus_GS300_GS430_service_manual 2

1 2

3 4

1 2

3 4

1 2 3

4 5 6

A

A

A35

2 1

ABS MOTORRelay

TRAC MOTORRelay

ABS SOLRelay

HORNRelay

GS 430/300 (EWD423F)

27

D

LHD : Engine Compartment Left (See Page 22)2 : Engine Room No.2 R/B

RHD : Engine Compartment Right (See Page 22)

Page 11: Lexus_GS300_GS430_service_manual 2

3

5

1 2

3

5

1 2

3

5

1 2

432

1

12

34

A

A

A

4

H-LP R UPR15A2 1

H-LP L UPR15A2 1

DIMMER DRL NO.2 Relay

FAN NO.2 Relay

FAN NO.1 Relay

A/C COMP Relay

FAN NO. 3 Relay

28

GS 430/300 (EWD423F)

D RELAY LOCATIONS

3 : Engine Room No.3 R/B Engine Compartment Left (See Page 22)

Page 12: Lexus_GS300_GS430_service_manual 2

12

34

12

345

Defogger Relay Heater Relay

1Turn Signal Flasher

2345678

35

12Rear Fog Light Relay

GS 430/300 (EWD423F)

29

D

LHD : Right Kick Panel (See Page 23)4 : Passenger Side R/B

RHD : Left Kick Panel (See Page 23)

5 : Driver Side R/B Right Kick Panel (See Page 23)(RHD)

Page 13: Lexus_GS300_GS430_service_manual 2

12

34567

89101112

1

1

5 4 3 2 1

10 9 8 7 6

2

7 6 5 4 3

1

1234

12

5

13 6789101111

4 3 2 1

5678910

1

2

352

13 5

2

1

1 23 4 5 6 78 9 10 11 12

21

3 4 5 6 7

1 2 3 45 6 7 8 9 10 11

1 2 3 4 5

6 7 8 9 10

1 2 3 412

56 7 8 9 10 11 13

1

(from Instrument Panel Wire)

FOG Relay

TAIL Relay

(from Instrument Panel Wire)

(from Cowl Wire)(LHD)(from Engine Room Main Wire)(RHD)

40A AM1 Fuse(for Medium Current)

(from Engine Room Main Wire)

(from Floor No.2 Wire)(LHD)(from Floor No.1 Wire)(RHD)(from Cowl Wire)

20AWASHER

10AGAUGE

10AHEATER

25AWIPER

15AECU-IG

15AFR FOG

10AFUEL OPN

5ASRS-B

7.5AOBD

5ASTARTER

10ATAIL

20AD FR DOOR

30AD P/SEAT

15ASTOP

5AIGN

7.5APANEL

15ARADIO NO.2

15ACIG

20AD RR DOOR

1F

1D

1B

1C

1K

1

(from Engine Room Main Wire)

1A

1E

30

GS 430/300 (EWD423F)

D RELAY LOCATIONS

������ LHD : Left Kick Panel (See Page 23)������: Driver Side J/B

RHD : Right Kick Panel (See Page 23)

Page 14: Lexus_GS300_GS430_service_manual 2

4 3 2 1

1

34567

2 1

3456

2

1

2

3

4

5

6

7

8

9

10

11

12

21

3 4 5 6 7

1 2 3 4

1 2

3 4 5 6

1 2 3 4 5

6 7 8 9 10 11 12 135 4 3 2 1

613 12 11 10 9 8 7

1H

1G

Body ECU No.2

(from Cowl Wire)

(from Cowl Wire)

(from Cowl Wire)

(from Cowl Wire)

YELLOW1N

1J

GS 430/300 (EWD423F)

31

D

(Inner Circuit : See Page 36)

Page 15: Lexus_GS300_GS430_service_manual 2

12

34567

891011121

5 4 3 2 1

10 9 8 7 6

12345

13 678910111211

4 3 2 1

5678910

1

2

1

2

1

2

352

13 5

2

1

11

1 23 4 5 6 78 9 10 11 12

1 2 3 45 6 7 8 9 10 11

1 2 3 4 5

6 7 8 9 10

1 2 3 4 56 7 8 9 10 11 12 13

(from Roof Wire)

IG Relay

MIR Relay

(from Engine Room Main Wire)

(from Engine Room Main Wire)

30A DEFOG Fuse(for Medium Current)

(from Floor No.1 Wire)(LHD)(from Floor No.2 Wire)(RHD)(from Cowl Wire)

Noise Filter

Noise Filter

20A

SEAT HTR

25A

S/ROOF

10A

RR FOG

10A

MIR HTR

20A

P FR DOOR

30A

P P/SEAT

15A

TV

10A

DOME

5A

ECU-B2

20A

P RR DOOR

2D

2F

2B

2A

2E

32

GS 430/300 (EWD423F)

D RELAY LOCATIONS

������ LHD : Right Kick Panel (See Page 23)������: Passenger Side J/B

RHD : Left Kick Panel (See Page 23)

Page 16: Lexus_GS300_GS430_service_manual 2

1

34567

2 1

3456

2

1

2

3

4

5

6

7

8

9

10

11

12

21

3 4 5 6 71 2

3 4 5 6

1 2 3 4 5

6 7 8 9 10 11 12 135 4 3 2 1

613 12 11 10 9 8 7

(from Cowl Wire)(from Cowl Wire)

(from Cowl Wire)

Body ECU No.1

2H

2G

2J

GS 430/300 (EWD423F)

33

D

(Inner Circuit : See Page 37)

Page 17: Lexus_GS300_GS430_service_manual 2

54321

54321

54321

54321

54321

54321

54321

54321

(from Instrument Panel Wire)

(from Instrument Panel Wire)

(from Instrument Panel Wire)

(from Instrument Panel Wire)

GRAYBLUEBLACK

3D 3C 3B 3A

34

GS 430/300 (EWD423F)

D RELAY LOCATIONS

���������

: Instrument Panel J/B Instrument Panel Reinforcement Center (See Page 23)

Page 18: Lexus_GS300_GS430_service_manual 2

54321

54321

54321

54321

54321

54321

54321

54321

(from Instrument Panel Wire)

(from Instrument Panel Wire)

(from Instrument Panel Wire)

(from Instrument Panel Wire)

GRAY BLUE BLACK

3E 3F 3G 3H

GS 430/300 (EWD423F)

35

D

(Inner Circuit : See Page 38)

Page 19: Lexus_GS300_GS430_service_manual 2

31J

91E

61F

121H

41B

91B

31G

111E

71H

81E

21C

21H

71F

41H

41D

31F

11B

51F

101F

71G

41N

61G

131F

51D

61C

41G

81B

11E

21D

61H

31N

41F

31C

111F

11K

11A

21F

61E

81H

31D

91H

101B

31H

41J

11N

121F

11C

101H

11J

81F

51H

21E

11F

61J

131H

111H

71D

31E

61D

11D

111B

121B

51G

11H

101D

91D

51C

91F

6

9

12

7

3

2

1

5

11

4

8

20A D FR DOOR

20A D RR DOOR

15A STOP

5A SRS-B

FOG Relay15A FR FOG

40A AM121

30A D P/SEAT

10A FUEL OPN

7.5A OBD

TAIL Relay10A TAIL

7.5A PANEL

15A RADIO NO.2 15A CIG

10A GAUGE

20A WASHER

25A WIPER

10A HEATER

15A ECU-IG

5A STARTER

5A IGN

Bod

y E

CU

No.

2

5

1

5

1

3

2 2

3

36

GS 430/300 (EWD423F)

D RELAY LOCATIONS

[Driver Side J/B Inner Circuit]

Page 20: Lexus_GS300_GS430_service_manual 2

12A

22F

62E

82H

92F

62F

102H

32H

52H

22H

122F

92B

12E

42G

82B

72G

132H

22B

72F

112B

122B

12H

72E

42D

22D

92D

32D

102D

102F

12F

92E

82D

42E

32J

62G

132F

52D

52J

52F

32F

112F

12D

22E

62D

112H

122H

52E

72D

92H

82F

102E

62H

42H

42F

52G

72H

10A DOME5A ECU-B2

IG Relay20A SEAT HTR

Noise Filter

Noise Filter

30A DEFOG

25A S/ROOF

30A P P/SEAT

10A RR FOG

20A P FR DOOR

20A P RR DOOR

15A TV

MIR Relay10A MIR HTR

4

3

2

8

5

6

1

11

9

Bod

y E

CU

No.

1

21

3

1

3

1

5

2

5

2

1

1

2

2

62J

GS 430/300 (EWD423F)

37

D

[Passenger Side J/B Inner Circuit]

Page 21: Lexus_GS300_GS430_service_manual 2

23E

33E

43E

53E

43F

53F

13G

23G

33G

43G

53G

23H

33H

43H

13A

33A

13B

33B

53B

23C

43C

53C

13D

23D

33D

43D

13E

23F

33F

13F

13H

53H

23A

43A

53A

23B

43B

13C

33C

53D

38

GS 430/300 (EWD423F)

D RELAY LOCATIONS

[Instrument Panel J/B Inner Circuit]

Page 22: Lexus_GS300_GS430_service_manual 2

40

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

Position of Parts in Engine Compartment[LHD : 3UZ–FE]

A11

F4

A14

H5

A9

H9

F6

F2

C3

∗ 1

H17

C21

F3

A8

H8

H6

H7

E1H16 H14 F7 B1 A5 A6 A7

A4

A1A2

A3

C4

C1

E8H18C22H19E9A15H12A13

H10

E10 A12

F5

F1

H3

H4

∗ 1 : E2,E3,E4,E5,E6

A 1 A/C Ambient Temp. SensorA 2 A/C Condenser Fan MotorA 3 A/C Magnetic Clutch and Lock SensorA 4 A/C Triple Pressure SW

(A/C Dual and Single Pressure SW)A 5 ABS & TRC & VSC ActuatorA 6 ABS & TRC & VSC ActuatorA 7 ABS & TRC & VSC ActuatorA 8 ABS Speed Sensor Front LHA 9 ABS Speed Sensor Front RHA 11 Air Flow MeterA12 Airbag Sensor Front LHA13 Airbag Sensor Front RHA14 AlternatorA15 Alternator

B 1 Brake Fluid Level Warning SW

C 1 Camshaft Position SensorC 3 Check ConnectorC 4 Crankshaft Position SensorC21 Camshaft Timing Oil Control Valve LHC22 Camshaft Timing Oil Control Valve RH

E 1 ECT SolenoidE 2 Engine and ECT ECUE 3 Engine and ECT ECUE 4 Engine and ECT ECU

E 5 Engine and ECT ECUE 6 Engine and ECT ECUE 8 Engine Hood Courtesy SWE 9 Engine Oil Level SensorE10 Exhaust Gas Sensor

F 1 Front Fog Light LHF 2 Front Fog Light RHF 3 Front Side Turn Signal Light LHF 4 Front Side Turn Signal Light RHF 5 Front Turn Signal and Clearance Light LHF 6 Front Turn Signal and Clearance Light RHF 7 Front Wiper Motor

H 3 Headlight Beam Level Control ECUH 4 Headlight Beam Level Control ECUH 5 Headlight Beam Level Control MotorH 6 Headlight Cleaner Control RelayH 7 Headlight Cleaner MotorH 8 Headlight Control ECU LHH 9 Headlight Control ECU RHH10 Headlight LH (High)H12 Headlight RH (High)H14 Heated Oxygen Sensor (Bank 1 Sensor 1)H16 Heated Oxygen Sensor (Bank 2 Sensor 1)H17 Height Control Sensor (Front)H18 Horn LHH19 Horn RH

Page 23: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

41

E

Position of Parts in Engine Compartment[LHD : 3UZ–FE]

V9

I19

I10

I17

I8

T1

P2

N7

V8

I18

I7

I20

W5

I16

I5

∗ 2

W2

W1

V2I23I25I21 S2 N1S3 S1 O1 N6 I24 V3 I9 I22 M1 J5

K1K2W3I6 R1W4T3T2 O2

∗ 2 : J3,J4,J48,J49

I 5 Injector No.1I 6 Injector No.2I 7 Injector No.3I 8 Injector No.4I 9 Injector No.5I 10 Injector No.6I 16 Ignition Coil and Igniter No.1I 17 Ignition Coil and Igniter No.2I 18 Ignition Coil and Igniter No.3I 19 Ignition Coil and Igniter No.4I 20 Ignition Coil and Igniter No.5I 21 Ignition Coil and Igniter No.6I 22 Ignition Coil and Igniter No.7I 23 Ignition Coil and Igniter No.8I 24 Injector No.7I 25 Injector No.8

J 3 Junction ConnectorJ 4 Junction ConnectorJ 5 Junction ConnectorJ 48 Junction ConnectorJ 49 Junction Connector

K 1 Knock Sensor 1K 2 Knock Sensor 2

M 1 Master Cylinder Pressure Sensor

N 1 Neutral Start SWN 6 Noise Filter (Ignition No.1)N 7 Noise Filter (Ignition No.2)

O 1 O/D Direct Clutch Speed SensorO 2 Oil Pressure SW

P 2 PPS Solenoid

R 1 Radiator Fan Motor

S 1 Speed Sensor (ECT)S 2 StarterS 3 Starter

T 1 Theft Deterrent HornT 2 Throttle Control MotorT 3 Throttle Position Sensor

V 2 VSV (ACIS)V 3 VSV (EVAP)V 8 VVT Sensor LHV 9 VVT Sensor RH

W 1 Washer Level Warning SWW 2 Washer MotorW 3 Water Temp. SensorW 4 Water Temp. SWW 5 Wireless Door Lock Buzzer

Page 24: Lexus_GS300_GS430_service_manual 2

42

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

Position of Parts in Engine Compartment[LHD : 2JZ–GE]

A11

F4

H15

A14

A9

H9 H13

(∗ 1) (∗ 2)

H5 H2

(∗ 3) (∗ 4)

F6

F2

C3

∗ 5

H17

F3

A7

B1

A8

H4

H11H8

(∗ 2)(∗ 1)

E1C1A10H16 C2 F7 A5A6

A4E10A3

A1A2E9E8H18C4H19H14A15H12A13

H10

F5A12 F1 H1

H3

H6 H7

∗ 1 : HID Type∗ 2 : Except HID Type∗ 3 : w/ Headlight Beam Level Control (Automatic)∗ 4 : w/ Headlight Beam Level Control (Manual)∗ 5 : E2,E3,E4,E5,E6,E7

(∗ 3)

(∗ 4)

A 1 A/C Ambient Temp. SensorA 2 A/C Condenser Fan MotorA 3 A/C Magnetic Clutch and Lock SensorA 4 A/C Triple Pressure SW

(A/C Dual and Single Pressure SW)A 5 ABS & TRC & VSC ActuatorA 6 ABS & TRC & VSC ActuatorA 7 ABS & TRC & VSC ActuatorA 8 ABS Speed Sensor Front LHA 9 ABS Speed Sensor Front RHA10 Accel Position SensorA 11 Air Flow MeterA12 Airbag Sensor Front LHA13 Airbag Sensor Front RHA14 AlternatorA15 Alternator

B 1 Brake Fluid Level Warning SW

C 1 Camshaft Position SensorC 2 Camshaft Timing Oil Control ValveC 3 Check ConnectorC 4 Crankshaft Position Sensor

E 1 ECT SolenoidE 2 Engine and ECT ECUE 3 Engine and ECT ECUE 4 Engine and ECT ECUE 5 Engine and ECT ECUE 6 Engine and ECT ECUE 7 Engine and ECT ECU

E 8 Engine Hood Courtesy SWE 9 Engine Oil Level SensorE10 Exhaust Gas Sensor

F 1 Front Fog Light LHF 2 Front Fog Light RHF 3 Front Side Turn Signal Light LHF 4 Front Side Turn Signal Light RHF 5 Front Turn Signal and Clearance Light LHF 6 Front Turn Signal and Clearance Light RHF 7 Front Wiper Motor

H 1 Headlight Beam Level Control Actuator LHH 2 Headlight Beam Level Control Actuator RHH 3 Headlight Beam Level Control ECUH 4 Headlight Beam Level Control ECUH 5 Headlight Beam Level Control MotorH 6 Headlight Cleaner Control RelayH 7 Headlight Cleaner MotorH 8 Headlight Control ECU LHH 9 Headlight Control ECU RHH10 Headlight LH (High)H11 Headlight LH (Low)H12 Headlight RH (High)H13 Headlight RH (Low)H14 Heated Oxygen Sensor (Bank 1 Sensor 1)H15 Heated Oxygen Sensor (Bank 1 Sensor 2)H16 Heated Oxygen Sensor (Bank 2 Sensor 1)H17 Height Control Sensor (Front)H18 Horn LHH19 Horn RH

Page 25: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

43

E

Position of Parts in Engine Compartment[LHD : 2JZ–GE]

I3

T2

T3

T1

I6

I2

I5

K2

V1

N2

I7

∗ 6

W5

I1

I4 V3 N1 I10 S1 O1 I9 I8 S2 S3 M1V2 J5

W3 K1 P34 P2 O2 W1R1W4 W2

∗ 6 : J1,J2,J3,J4

I 1 IgniterI 2 Ignition Coil No.1I 3 Ignition Coil No.2I 4 Ignition Coil No.3I 5 Injector No.1I 6 Injector No.2I 7 Injector No.3I 8 Injector No.4I 9 Injector No.5I 10 Injector No.6

J 1 Junction ConnectorJ 2 Junction ConnectorJ 3 Junction ConnectorJ 4 Junction ConnectorJ 5 Junction Connector

K 1 Knock Sensor 1K 2 Knock Sensor 2

M 1 Master Cylinder Pressure Sensor

N 1 Neutral Start SWN 2 Noise Filter (Ignition)

O 1 O/D Direct Clutch Speed SensorO 2 Oil Pressure SW

P 2 PPS SolenoidP34 Power Steering Oil Pressure Sensor

R 1 Radiator Fan Motor

S 1 Speed Sensor (ECT)S 2 StarterS 3 Starter

T 1 Theft Deterrent HornT 2 Throttle Control MotorT 3 Throttle Position Sensor

V 1 Variable ResistorV 2 VSV (ACIS)V 3 VSV (EVAP)

W 1 Washer Level Warning SWW 2 Washer MotorW 3 Water Temp. SensorW 4 Water Temp. SWW 5 Wireless Door Lock Buzzer

Page 26: Lexus_GS300_GS430_service_manual 2

44

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

Position of Parts in Instrument Panel[LHD]

A23

A22

G3

A24

A25

B6

A27

B5

G2

D1

C5

G1

B2

B3

B4

C9

A33C19 C12C11 H20A28 C10 A20 A16 A17 A19 A30 A29 A31 C20

C15C14C13D2H21 A10H22F8 A32 C16 C6H23 C7 C8 A21 E11 A26H15 A18

(∗ 1)

∗ 1 : 3UZ-FE

(∗ 1)

A10 Accel Positition SensorA16 A/C Control AssemblyA17 A/C Control AssemblyA18 A/C Room Temp. SensorA19 A/C Solar SensorA20 A/C ThermistorA21 A/T Shift Position IlluminationA22 ABS & TRC & VSC ECUA23 ABS & TRC & VSC ECUA24 ABS & TRC & VSC ECUA25 ABS & TRC & VSC ECUA26 ABS Deceleration SensorA27 Air Inlet Control Servo MotorA28 Air Mix Control Servo Motor (Driver Side)A29 Air Mix Control Servo Motor (Front Passenger Side)A30 Air Vent Mode Control Servo MotorA31 Airbag Squib (Front Passenger Airbag Assembly)A32 Airbag Squib (Steering Wheel Pad)A33 Automatic Light Control Sensor

B 2 Blower MotorB 3 Blower Motor Controller B 4 Blower Motor Controller B 5 Body ECU No.1B 6 Body ECU No.2

C 5 CD Automatic ChangerC 6 Center Airbag Sensor AssemblyC 7 Center Airbag Sensor Assembly

C 8 Center Airbag Sensor AssemblyC 9 Cigarette LighterC10 ClockC11 Combination MeterC12 Combination MeterC13 Combination SWC14 Combination SWC15 Combination SWC16 Combination SWC19 Curtain Shield Airbag Squib LHC20 Curtain Shield Airbag Squib RH

D 1 Daytime Running Light RelayD 2 DLC3

E 11 ECT Pattern Select SW

F 8 Fuel Lid Opener SW

G 1 Glove Box LightG 2 Glove Box Light SWG 3 Gateway ECU

H15 Heated Oxygen Sensor (Bank 1 Sensor 2)H20 Hazard SWH21 Headlight Beam Level Control SWH22 Headlight Cleaner SWH23 Heated Oxygen Sensor (Bank 2 Sensor 2)

Page 27: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

45

E

Position of Parts in Instrument Panel[LHD]

R8

J9

R5

J10

J12

P5

V5

T7

P3

J8

T4

J7

R6

S10

S11

S7

S9

S8

J18

J19

R4

J15J13J11 J16 T6 M2M6J17 I11I12 M3

U1T5 J14 K3S6S12L1 M7R7J6 R3R2 S5 S4 V4 Y1 P4

I 11 Ignition Key Cylinder LightI 12 Ignition SW

J 6 Junction ConnectorJ 7 Junction ConnectorJ 8 Junction ConnectorJ 9 Junction ConnectorJ 10 Junction ConnectorJ 11 Junction ConnectorJ 12 Junction ConnectorJ 13 Junction ConnectorJ 14 Junction ConnectorJ 15 Junction ConnectorJ 16 Junction ConnectorJ 17 Junction ConnectorJ 18 Junction ConnectorJ 19 Junction Connector

K 3 Kick Down SW

L 1 Luggage Compartment Door Opener SW

M 2 Multi–DisplayM 3 Multi–DisplayM 6 Multi–DisplayM 7 Mirror Retractor SW

P 3 Parking Brake SWP 4 Power OutletP 5 PPS ECU

R 2 Radio and PlayerR 3 Radio and PlayerR 4 Radio and PlayerR 5 Rear Fog Light RelayR 6 Rear Fog Light SWR 7 Remote Control Mirror SWR 8 Rheostat

S 4 Seat Heater SWS 5 Shift Lock Control ECUS 6 Step Light LHS 7 Step Light RHS 8 Stereo Component AmplifierS 9 Stereo Component AmplifierS10 Stereo Component AmplifierS 11 Stereo Component AmplifierS12 Stop Light SW

T 4 Telephone MicrophoneT 5 Tilt and Telescopic ECUT 6 Transponder Key AmplifierT 7 Turn Signal Flasher

U 1 Unlock Warning SW and Key Interlock Solenoid

V 4 VSC Off SWV 5 VSC Warning Buzzer

Y 1 Yaw Rate Sensor

Page 28: Lexus_GS300_GS430_service_manual 2

46

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

Position of Parts in Body[LHD]

D18

D21

C18

C17

D19

D20

F9

D16

D22

D4

D8

J22

A38

H25

D11

D15

D25

A37

I13 I14 F11 F12 F13 F10 D13 I15 D17 D9D5D23

J20F16A34F15D10D14D6A36 D24 J21D3 H24 F14 F17 H26 D7 A35

A34 ABS Speed Sensor Rear LHA35 ABS Speed Sensor Rear RHA36 Ashtray Illumination Rear LHA37 Ashtray Illumination Rear RHA38 Auto Antenna Control Relay and Motor

C17 Cellular Phone (Hand Set)C18 Cellular Phone (Hand Set)

D 3 Diode (Luggage Door Open Detection)D 4 Door Courtesy Light Front LHD 5 Door Courtesy Light Front RHD 6 Door Courtesy Light Rear LHD 7 Door Courtesy Light Rear RHD 8 Door Courtesy SW Front LHD 9 Door Courtesy SW Front RHD10 Door Courtesy SW Rear LHD11 Door Courtesy SW Rear RHD13 Door Lock Control SW RHD14 Door Lock Motor and Door Lock Detection SW Rear LHD15 Door Lock Motor and Door Lock Detection SW Rear RHD16 Door Lock Motor, Door Key Lock and Unlock SW and

Door Lock Detection SW Front LHD17 Door Lock Motor, Door Key Lock and Unlock SW and

Door Lock Detection SW Front RHD18 Driver Door ECUD19 Driver Door ECUD20 Driver Door ECU

D21 Driving Position Memory SWD22 Door Lock Motor and SW Front LHD23 Door Lock Motor and SW Front RHD24 Door Lock Motor and SW Rear LHD25 Door Lock Motor and SW Rear RH

F 9 Front Door Speaker LHF 10 Front Door Speaker RHF 11 Front Passenger Door ECUF 12 Front Passenger Door ECUF 13 Front Passenger Door ECUF 14 Fuel Lid Opener MotorF 15 Fuel Pump and SenderF 16 Fuel Pump Control ECUF 17 Fuel Sender (Sub)

H24 Height Control Sensor (Rear)H25 High Mounted Stop Light (Bulb Type)H26 High Mounted Stop Light (LED Type)

I 13 Inner MirrorI 14 Interior Light Rear LHI 15 Interior Light Rear RH

J 20 Junction ConnectorJ 21 Junction ConnectorJ 22 Junction Connector

Page 29: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

47

E

Position of Parts in Body[LHD]

P12

R17

P11

P9

S13

R13

P14

R15

N4

N3

R11

R12

L3

L6

L5

M5V6 P6 M4 V7P13R18 P8 S14 P10R16 R14 W7 W6

L4P15N5 R10 L7 T8 R9T9 L2

L 2 License Plate Light LHL 3 License Plate Light RHL 4 Light Failure SensorL 5 Luggage Compartment Door Courtesy SW and

Opener MotorL 6 Luggage Compartment Door Key Unlock SWL 7 Luggage Compartment Light

M 4 Moon Roof Control ECUM 5 Moon Roof Control SW

N 3 Navigation ECUN 4 Navigation ECUN 5 Noise Filter (Rear Window Defogger)

P 6 Personal LightP 8 Power Window Control SW Front RHP 9 Power Window Control SW Rear LHP10 Power Window Control SW Rear RHP 11 Power Window Master SWP12 Power Window Motor Front LHP13 Power Window Motor Front RHP14 Pretensioner LHP15 Pretensioner RH

R 9 Rear Combination Light LHR10 Rear Combination Light LHR11 Rear Combination Light RHR12 Rear Combination Light RHR13 Rear Door LH ECUR14 Rear Door RH ECUR15 Rear Door Speaker LHR16 Rear Door Speaker RHR17 Remote Control Mirror LHR18 Remote Control Mirror RH

S13 Side Airbag Sensor LHS14 Side Airbag Sensor RH

T 8 Telephone Transceiver and Speaker RelayT 9 Telephone Transceiver and Speaker Relay

V 6 Vanity Light LHV 7 Vanity Light RH

W 6 Wireless Door Lock Control ECUW 7 Woofer (Speaker)

Page 30: Lexus_GS300_GS430_service_manual 2

48

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

Position of Parts in Seat[LHD]

S20

P20

P30

P31

P16

P24 P33P22 S16 P21 P29 S21 S18 P26

B7P19P18J23P23P32L8 B10S17 S19 J24 P25 P27 P17 P28 L9

B 7 Buckle SW LHB10 Buckle SW RH and

Seat Belt Warning Occupant Detection Sensor

J 23 Junction ConnectorJ 24 Junction Connector

L 8 Lumbar Support Control SW (Driver’s Seat)L 9 Lumbar Support Control SW (Front Passenger’s Seat)

P16 Power Seat Control SW (Driver’s Seat)P17 Power Seat Control SW (Front Passenger’s Seat)P18 Power Seat ECUP19 Power Seat ECUP20 Power Seat Motor (Driver’s Seat Front Vertical Control)P21 Power Seat Motor

(Driver’s Seat Lumbar Support Control)P22 Power Seat Motor (Driver’s Seat Rear Vertical Control)P23 Power Seat Motor (Driver’s Seat Reclining Control)P24 Power Seat Motor (Driver’s Seat Slide Control)P25 Power Seat Motor

(Front Passenger’s Seat Front Vertical Control)P26 Power Seat Motor

(Front Passenger’s Seat Lumbar Support Control)

P27 Power Seat Motor (Front Passenger’s Seat Rear Vertical Control)

P28 Power Seat Motor (Front Passenger’s Seat Reclining Control)

P29 Power Seat Motor (Front Passenger’s Seat Slide Control)

P30 Power Seat Position Sensor (Driver’s Seat Front Vertical Control)

P31 Power Seat Position Sensor (Driver’s Seat Rear Vertical Control)

P32 Power Seat Position Sensor (Driver’s Seat Reclining Control)

P33 Power Seat Position Sensor (Driver’s Seat Slide Control)

S16 Seat Heater (Driver’s Seat Back)S17 Seat Heater (Driver’s Seat Cushion)S18 Seat Heater (Front Passenger’s Seat Back)S19 Seat Heater (Front Passenger’s Seat Cushion)S20 Side Airbag Squib LHS21 Side Airbag Squib RH

Page 31: Lexus_GS300_GS430_service_manual 2

50

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

Position of Parts in Engine Compartment[RHD : 3UZ–FE]

A11

F4

A14

H5

A9

H9

F6

F2

C3

∗ 1

H17

C21

F3

A8

H8

H6

H7

E1 H14F7B1 A5 A6 A7 H16

A4

A1A2

A3

C4

C1

E8H18C22H19E9A15H12A13

H10

E10 A12

F5

F1

H3

H4

∗ 1 : E2,E3,E4,E5,E6

A 1 A/C Ambient Temp. SensorA 2 A/C Condenser Fan MotorA 3 A/C Magnetic Clutch and Lock SensorA 4 A/C Triple Pressure SW

(A/C Dual and Single Pressure SW)A 5 ABS & TRC & VSC ActuatorA 6 ABS & TRC & VSC ActuatorA 7 ABS & TRC & VSC ActuatorA 8 ABS Speed Sensor Front LHA 9 ABS Speed Sensor Front RHA 11 Air Flow MeterA12 Airbag Sensor Front LHA13 Airbag Sensor Front RHA14 AlternatorA15 Alternator

B 1 Brake Fluid Level Warning SW

C 1 Camshaft Position SensorC 3 Check ConnectorC 4 Crankshaft Position SensorC21 Camshaft Timing Oil Control Valve LHC22 Camshaft Timing Oil Control Valve RH

E 1 ECT SolenoidE 2 Engine and ECT ECUE 3 Engine and ECT ECUE 4 Engine and ECT ECU

E 5 Engine and ECT ECUE 6 Engine and ECT ECUE 8 Engine Hood Courtesy SWE 9 Engine Oil Level SensorE10 Exhaust Gas Sensor

F 1 Front Fog Light LHF 2 Front Fog Light RHF 3 Front Side Turn Signal Light LHF 4 Front Side Turn Signal Light RHF 5 Front Turn Signal and Clearance Light LHF 6 Front Turn Signal and Clearance Light RHF 7 Front Wiper Motor

H 3 Headlight Beam Level Control ECUH 4 Headlight Beam Level Control ECUH 5 Headlight Beam Level Control MotorH 6 Headlight Cleaner Control RelayH 7 Headlight Cleaner MotorH 8 Headlight Control ECU LHH 9 Headlight Control ECU RHH10 Headlight LH (High)H12 Headlight RH (High)H14 Heated Oxygen Sensor (Bank 1 Sensor 1)H16 Heated Oxygen Sensor (Bank 2 Sensor 1)H17 Height Control Sensor (Front)H18 Horn LHH19 Horn RH

Page 32: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

51

E

Position of Parts in Engine Compartment[RHD : 3UZ–FE]

V9

I19

W5

I10

I17

I8

T1

P2

N7

V8

I18

I7

I20

I16

I5

∗ 2

W2

W1

V2I23I25I21 S2 N1 S3 S1 O1 N6 I24 V3 I9 I22M1J29

K1K2W3I6 R1W4T2 T3 O2

∗ 2 : J27,J28,J48,J49

I 5 Injector No.1I 6 Injector No.2I 7 Injector No.3I 8 Injector No.4I 9 Injector No.5I 10 Injector No.6I 16 Ignition Coil and Igniter No.1I 17 Ignition Coil and Igniter No.2I 18 Ignition Coil and Igniter No.3I 19 Ignition Coil and Igniter No.4I 20 Ignition Coil and Igniter No.5I 21 Ignition Coil and Igniter No.6I 22 Ignition Coil and Igniter No.7I 23 Ignition Coil and Igniter No.8I 24 Injector No.7I 25 Injector No.8

J 27 Junction ConnectorJ 28 Junction ConnectorJ 29 Junction ConnectorJ 48 Junction ConnectorJ 49 Junction Connector

K 1 Knock Sensor 1K 2 Knock Sensor 2

M 1 Master Cylinder Pressure Sensor

N 1 Neutral Start SWN 6 Noise Filter (Ignition No.1)N 7 Noise Filter (Ignition No.2)

O 1 O/D Direct Clutch Speed SensorO 2 Oil Pressure SW

P 2 PPS Solenoid

R 1 Radiator Fan Motor

S 1 Speed Sensor (ECT)S 2 StarterS 3 Starter

T 1 Theft Deterrent HornT 2 Throttle Control MotorT 3 Throttle Position Sensor

V 2 VSV (ACIS)V 3 VSV (EVAP)V 8 VVT Sensor LHV 9 VVT Sensor RH

W 1 Washer Level Warning SWW 2 Washer MotorW 3 Water Temp. SensorW 4 Water Temp. SWW 5 Wireless Door Lock Buzzer

Page 33: Lexus_GS300_GS430_service_manual 2

52

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

Position of Parts in Engine Compartment[RHD : 2JZ–GE]

A11

F4

H15

A14

A9

H9 H13

(∗ 1) (∗ 2)

H5 H2

(∗ 3) (∗ 4)

F6

F2

C3

∗ 5

H17

F3

A8

H6

H7

H11H8

(∗ 2)(∗ 1)

E1C1A10H16F7 C2A7B1 A5A6

E10A1A3

A4A2E9E8H18C4H19H14A15H12A13

H10

F5A12 F1 H1

H3

H4

∗ 1 : HID Type∗ 2 : Except HID Type∗ 3 : w/ Headlight Beam Level Control (Automatic)∗ 4 : w/ Headlight Beam Level Control (Manual)∗ 5 : E2,E3,E4,E5,E6,E7

(∗ 3)

(∗ 4)

A 1 A/C Ambient Temp. SensorA 2 A/C Condenser Fan MotorA 3 A/C Magnetic Clutch and Lock SensorA 4 A/C Triple Pressure SW

(A/C Dual and Single Pressure SW)A 5 ABS & TRC & VSC ActuatorA 6 ABS & TRC & VSC ActuatorA 7 ABS & TRC & VSC ActuatorA 8 ABS Speed Sensor Front LHA 9 ABS Speed Sensor Front RHA10 Accel Position SensorA 11 Air Flow MeterA12 Airbag Sensor Front LHA13 Airbag Sensor Front RHA14 AlternatorA15 Alternator

B 1 Brake Fluid Level Warning SW

C 1 Camshaft Position SensorC 2 Camshaft Timing Oil Control ValveC 3 Check ConnectorC 4 Crankshaft Position Sensor

E 1 ECT SolenoidE 2 Engine and ECT ECUE 3 Engine and ECT ECUE 4 Engine and ECT ECUE 5 Engine and ECT ECUE 6 Engine and ECT ECUE 7 Engine and ECT ECU

E 8 Engine Hood Courtesy SWE 9 Engine Oil Level SensorE10 Exhaust Gas Sensor

F 1 Front Fog Light LHF 2 Front Fog Light RHF 3 Front Side Turn Signal Light LHF 4 Front Side Turn Signal Light RHF 5 Front Turn Signal and Clearance Light LHF 6 Front Turn Signal and Clearance Light RHF 7 Front Wiper Motor

H 1 Headlight Beam Level Control Actuator LHH 2 Headlight Beam Level Control Actuator RHH 3 Headlight Beam Level Control ECUH 4 Headlight Beam Level Control ECUH 5 Headlight Beam Level Control MotorH 6 Headlight Cleaner Control RelayH 7 Headlight Cleaner MotorH 8 Headlight Control ECU LHH 9 Headlight Control ECU RHH10 Headlight LH (High)H11 Headlight LH (Low)H12 Headlight RH (High)H13 Headlight RH (Low)H14 Heated Oxygen Sensor (Bank 1 Sensor 1)H15 Heated Oxygen Sensor (Bank 1 Sensor 2)H16 Heated Oxygen Sensor (Bank 2 Sensor 1)H17 Height Control Sensor (Front)H18 Horn LHH19 Horn RH

Page 34: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

53

E

Position of Parts in Engine Compartment[RHD : 2JZ–GE]

I3

T2

T3

W5

T1

I6

I2

I5

K2

N2

I7

∗ 6

I1

I4 V3 N1M1J29 I10 S1 O1 I9 I8 S3 S2 V2

W3 K1 P34 P2 O2 W1R1W4 W2

∗ 6 : J25,J26,J27,J28

I 1 IgniterI 2 Ignition Coil No.1I 3 Ignition Coil No.2I 4 Ignition Coil No.3I 5 Injector No.1I 6 Injector No.2I 7 Injector No.3I 8 Injector No.4I 9 Injector No.5I 10 Injector No.6

J 25 Junction ConnectorJ 26 Junction ConnectorJ 27 Junction ConnectorJ 28 Junction ConnectorJ 29 Junction Connector

K 1 Knock Sensor 1K 2 Knock Sensor 2

M 1 Master Cylinder Pressure Sensor

N 1 Neutral Start SWN 2 Noise Filter (Ignition)

O 1 O/D Direct Clutch Speed SensorO 2 Oil Pressure SW

P 2 PPS SolenoidP34 Power Steering Oil Pressure Sensor

R 1 Radiator Fan Motor

S 1 Speed Sensor (ECT)S 2 StarterS 3 Starter

T 1 Theft Deterrent HornT 2 Throttle Control MotorT 3 Throttle Position Sensor

V 2 VSV (ACIS)V 3 VSV (EVAP)

W 1 Washer Level Warning SWW 2 Washer MotorW 3 Water Temp. SensorW 4 Water Temp. SWW 5 Wireless Door Lock Buzzer

Page 35: Lexus_GS300_GS430_service_manual 2

54

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

Position of Parts in Instrument Panel[RHD]

G2

A31

C19

A19

C5

G1

B5

B2

A25

H21

C16

D2

A32

A23

A24

A22

C20

C15

F8

B3A27 A30 A20 A28 C10 H20A16 A17 A18 A33C11 C12 A10H22

B4 C6 C7 C8C9 A26 C13 B6 C14A21E11H23H15A29

∗ 1 : 3UZ-FE

(∗ 1)

G3

(∗ 1)

A10 Accel Position SensorA16 A/C Control AssemblyA17 A/C Control AssemblyA18 A/C Room Temp. SensorA19 A/C Solar SensorA20 A/C ThermistorA21 A/T Shift Position IlluminationA22 ABS & TRC & VSC ECUA23 ABS & TRC & VSC ECUA24 ABS & TRC & VSC ECUA25 ABS & TRC & VSC ECUA26 ABS Deceleration SensorA27 Air Inlet Control Servo MotorA28 Air Mix Control Servo Motor (Driver Side)A29 Air Mix Control Servo Motor (Front Passenger Side)A30 Air Vent Mode Control Servo MotorA31 Airbag Squib (Front Passenger Airbag Assembly)A32 Airbag Squib (Steering Wheel Pad)A33 Automatic Light Control Sensor

B 2 Blower MotorB 3 Blower Motor Controller B 4 Blower Motor Controller B 5 Body ECU No.1B 6 Body ECU No.2

C 5 CD Automatic ChangerC 6 Center Airbag Sensor AssemblyC 7 Center Airbag Sensor AssemblyC 8 Center Airbag Sensor AssemblyC 9 Cigarette LighterC10 ClockC11 Combination MeterC12 Combination MeterC13 Combination SWC14 Combination SWC15 Combination SWC16 Combination SWC19 Curtain Shield Airbag Squib LHC20 Curtain Shield Airbag Squib RH

D 2 DLC3

E 11 ECT Pattern Select SW

F 8 Fuel Lid Opener SW

G 1 Glove Box LightG 2 Glove Box Light SWG 3 Gateway ECU

H15 Heated Oxygen Sensor (Bank 1 Sensor 2)H20 Hazard SWH21 Headlight Beam Level Control SWH22 Headlight Cleaner SWH23 Heated Oxygen Sensor (Bank 2 Sensor 2)

Page 36: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

55

E

Position of Parts in Instrument Panel[RHD]

S8

J32

J33

J34

S9

S10

S11

J30

J31

S6

T6

P5

S7

L1

I12

I11

U1

R7

R6

V5

R8

M3M2 M6 P3 S12J38J37J36J35 J41J40J39 T4 J42

R3R2 S5 V4R4 S4 K3T5 Y1 P4

I 11 Ignition Key Cylinder LightI 12 Ignition SW

J 30 Junction ConnectorJ 31 Junction ConnectorJ 32 Junction ConnectorJ 33 Junction ConnectorJ 34 Junction ConnectorJ 35 Junction ConnectorJ 36 Junction ConnectorJ 37 Junction ConnectorJ 38 Junction ConnectorJ 39 Junction ConnectorJ 40 Junction ConnectorJ 41 Junction ConnectorJ 42 Junction Connector

K 3 Kick Down SW

L 1 Luggage Compartment Door Opener SW

M 2 Multi–DisplayM 3 Multi–DisplayM 6 Multi–Display

P 3 Parking Brake SWP 4 Power OutletP 5 PPS ECU

R 2 Radio and PlayerR 3 Radio and PlayerR 4 Radio and PlayerR 6 Rear Fog Light SWR 7 Remote Control Mirror SWR 8 Rheostat

S 4 Seat Heater SWS 5 Shift Lock Control ECUS 6 Step Light LHS 7 Step Light RHS 8 Stereo Component AmplifierS 9 Stereo Component AmplifierS10 Stereo Component AmplifierS 11 Stereo Component AmplifierS12 Stop Light SW

T 4 Telephone MicrophoneT 5 Tilt and Telescopic ECUT 6 Transponder Key Amplifier

U 1 Unlock Warning SW and Key Interlock Solenoid

V 4 VSC Off SWV 5 VSC Warning Buzzer

Y 1 Yaw Rate Sensor

Page 37: Lexus_GS300_GS430_service_manual 2

56

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

Position of Parts in Body[RHD]

F11

D12

C17

C18

F12

F13

F9

D16

D22

D4

D8

J45

A38

H25

D11

D15

D25

A37

I13 I14 D18 D19 D20 F10 D21 I15 D17 D9D5D23

J43F16A34F15D10 D14D6A36 D24 J44D3 H24 F14 F17 H26 D7 A35

A34 ABS Speed Sensor Rear LHA35 ABS Speed Sensor Rear RHA36 Ashtray Illumination Rear LHA37 Ashtray Illumination Rear RHA38 Auto Antenna Control Relay and Motor

C17 Cellular Phone (Hand Set)C18 Cellular Phone (Hand Set)

D 3 Diode (Luggage Door Open Detection)D 4 Door Courtesy Light Front LHD 5 Door Courtesy Light Front RHD 6 Door Courtesy Light Rear LHD 7 Door Courtesy Light Rear RHD 8 Door Courtesy SW Front LHD 9 Door Courtesy SW Front RHD10 Door Courtesy SW Rear LHD11 Door Courtesy SW Rear RHD12 Door Lock Control SW LHD14 Door Lock Motor and Door Lock Detection SW Rear LHD15 Door Lock Motor and Door Lock Detection SW Rear RHD16 Door Lock Motor, Door Key Lock and Unlock SW and

Door Lock Detection SW Front LHD17 Door Lock Motor, Door Key Lock and Unlock SW and

Door Lock Detection SW Front RHD18 Driver Door ECUD19 Driver Door ECUD20 Driver Door ECU

D21 Driving Position Memory SWD22 Door Lock Motor and SW Front LHD23 Door Lock Motor and SW Front RHD24 Door Lock Motor and SW Rear LHD25 Door Lock Motor and SW Rear RH

F 9 Front Door Speaker LHF 10 Front Door Speaker RHF 11 Front Passenger Door ECUF 12 Front Passenger Door ECUF 13 Front Passenger Door ECUF 14 Fuel Lid Opener MotorF 15 Fuel Pump and SenderF 16 Fuel Pump Control ECUF 17 Fuel Sender (Sub)

H24 Height Control Sensor (Rear)H25 High Mounted Stop Light (Bulb Type)H26 High Mounted Stop Light (LED Type)

I 13 Inner MirrorI 14 Interior Light Rear LHI 15 Interior Light Rear RH

J 43 Junction ConnectorJ 44 Junction ConnectorJ 45 Junction Connector

Page 38: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

57

E

Position of Parts in Body[RHD]

P12

R17

P7

P9

S13

R13

P14

R15

N4

N3

R11

R12

L3

L6

L5

M5V6 P6 M4 V7P13R18 P11 S14 P10R16 R14 W7 W6

L4P15N5 R10 L7 T8 R9T9 L2

L 2 License Plate Light LHL 3 License Plate Light RHL 4 Light Failure SensorL 5 Luggage Compartment Door Courtesy SW and

Opener MotorL 6 Luggage Compartment Door Key Unlock SWL 7 Luggage Compartment Light

M 4 Moon Roof Control ECUM 5 Moon Roof Control SW

N 3 Navigation ECUN 4 Navigation ECUN 5 Noise Filter (Rear Window Defogger)

P 6 Personal LightP 7 Power Window Control SW Front LHP 9 Power Window Control SW Rear LHP10 Power Window Control SW Rear RHP 11 Power Window Master SWP12 Power Window Motor Front LHP13 Power Window Motor Front RHP14 Pretensioner LHP15 Pretensioner RH

R 9 Rear Combination Light LHR10 Rear Combination Light LHR11 Rear Combination Light RHR12 Rear Combination Light RHR13 Rear Door LH ECUR14 Rear Door RH ECUR15 Rear Door Speaker LHR16 Rear Door Speaker RHR17 Remote Control Mirror LHR18 Remote Control Mirror RH

S13 Side Airbag Sensor LHS14 Side Airbag Sensor RH

T 8 Telephone Transceiver and Speaker RelayT 9 Telephone Transceiver and Speaker Relay

V 6 Vanity Light LHV 7 Vanity Light RH

W 6 Wireless Door Lock Control ECUW 7 Woofer (Speaker)

Page 39: Lexus_GS300_GS430_service_manual 2

58

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

Position of Parts in Seat[RHD]

P29

S20

P25

P17

B9 S18 P24 S21 J47 P20 P21 S16 P16 L8

S19J46P27P28L9 P26 B8P33 S17 P18 P19 P30 P31 P22 P32 P23

B 8 Buckle SW RHB 9 Buckle SW LH and

Seat Belt Warning Occupant Detection Sensor

J 46 Junction ConnectorJ 47 Junction Connector

L 8 Lumbar Support Control SW (Driver’s Seat)L 9 Lumbar Support Control SW (Front Passenger’s Seat)

P16 Power Seat Control SW (Driver’s Seat)P17 Power Seat Control SW (Front Passenger’s Seat)P18 Power Seat ECUP19 Power Seat ECUP20 Power Seat Motor (Driver’s Seat Front Vertical Control)P21 Power Seat Motor

(Driver’s Seat Lumbar Support Control)P22 Power Seat Motor (Driver’s Seat Rear Vertical Control)P23 Power Seat Motor (Driver’s Seat Reclining Control)P24 Power Seat Motor (Driver’s Seat Slide Control)P25 Power Seat Motor

(Front Passenger’s Seat Front Vertical Control)

P26 Power Seat Motor (Front Passenger’s Seat Lumbar Support Control)

P27 Power Seat Motor (Front Passenger’s Seat Rear Vertical Control)

P28 Power Seat Motor (Front Passenger’s Seat Reclining Control)

P29 Power Seat Motor (Front Passenger’s Seat Slide Control)

P30 Power Seat Position Sensor (Driver’s Seat Front Vertical Control)

P31 Power Seat Position Sensor (Driver’s Seat Rear Vertical Control)

P32 Power Seat Position Sensor (Driver’s Seat Reclining Control)

P33 Power Seat Position Sensor (Driver’s Seat Slide Control)

S16 Seat Heater (Driver’s Seat Back)S17 Seat Heater (Driver’s Seat Cushion)S18 Seat Heater (Front Passenger’s Seat Back)S19 Seat Heater (Front Passenger’s Seat Cushion)S20 Side Airbag Squib LHS21 Side Airbag Squib RH

Page 40: Lexus_GS300_GS430_service_manual 2

Engine No.2Wire

Cowl Wire

Relay BlockWire

Engine Wire

Engine No.4Wire

Engine RoomMain Wire

EC1

EA3

EA2

EB1

EB2

EEEDEC

EBEA

60

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

: Location of Connector Joining Wire Harness and Wire Harness: Location of Ground Points

[LHD : 3UZ–FE]

Page 41: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

61

E

Connector Joining Wire Harness and Wire Harness

1 2 3 4

5 6 7 8 9 10 4 3 2 1

5678910

1 2 3

4 5 6 7 8 9

3 2 1

456789

1 23 4 5 6 78 9 10 11 12

12

34567

89101112

1 2

3 4

12

3432

1

3 2

1

EA2 EA3

EB1 EB2 EC1 BLACK

Code Joining Wire Harness and Wire Harness (Connector Location)

EA2

EA3Engine Wire and Cowl Wire (Inside of the ECU Box)

EB1

EB2Cowl Wire and Relay Block Wire (Inside of the Engine Room No.3 R/B)

EC1 Engine No.2 Wire and Engine Wire (Near the Starter)

Page 42: Lexus_GS300_GS430_service_manual 2

Cowl Wire

Relay BlockWire

Engine WireEngine No.2Wire

Engine No.4Wire

Engine RoomMain Wire

EA4

EA3

EA2

EA1

EB1

EB2

EEEDEC

EBEA

62

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

: Location of Connector Joining Wire Harness and Wire Harness: Location of Ground Points

[LHD : 2JZ–GE]

Page 43: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

63

E

Connector Joining Wire Harness and Wire Harness

1 23 4 5 6 78 9 10 11 12

12

34567

89101112

1 2 3 4

5 6 7 8 9 10 4 3 2 1

5678910

1 2 3

4 5 6 7 8 9

3 2 1

456789

1 2 3 45 6 7 8 9 10 11 11

4 3 2 1

5678910

1 23 4 5 6 78 9 10 11 12

12

34567

89101112

1 2

3 4

12

34

EA1 EA2

EA3 EA4

EB2EB1

Code Joining Wire Harness and Wire Harness (Connector Location)

EA1

EA2

EA3Engine Wire and Cowl Wire (Inside of the ECU Box)

EA4

EB1

EB2Cowl Wire and Relay Block Wire (Inside of the Engine Room No.3 R/B)

Page 44: Lexus_GS300_GS430_service_manual 2

InstrumentPanel Wire

Floor No.2Wire

Engine RoomMain Wire

Floor No.1Wire

Front DoorRH Wire

Roof Wire

A/C SubNo.1 Wire

A/C SubNo.2 Wire

Floor No.1Wire

Cowl Wire

Curtain ShieldAirbag No.1Wire

Engine RoomMain Wire

Front DoorLH Wire

IC1

IA1

IB1

IA2

IC2

IC3

ID1 IH1IG1

IE1 IE2 IF1

Curtain ShieldAirbag No.2 Wire

IIIG

IH

IF

64

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

: Location of Connector Joining Wire Harness and Wire Harness: Location of Ground Points

[LHD]

Page 45: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

65

E

Connector Joining Wire Harness and Wire Harness

IA1 ORANGE IA2 BLUE IB1

IC2 ORANGEIC1 BLUE

IC3 ID1

IE2 IF1 YELLOWIE1 BLUE

IG1 IH1

1 2 3 4

5 6 7 8 9 10 4 3 2 1

5678910

9

18

8

1716

76

1514

54

1312

32

11

1

10

89

18 17

7

16

6

15

5

14

4

13

3

12

2

11

1

10

1 2 3 4

5 6 7 8 9 10 11 12

13 14 15 16 17

1234

56789101112

1314151617

9

18

8

1716

76

1514

54

1312

32

11

1

10

89

18 17

7

16

6

15

5

14

4

13

3

12

2

11

1

10

1 2 3 4

5 6 7 8 9 10 4 3 2 1

5678910

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 2012345678

91011121314151617181920

1 2 3

4 5 6 7 8 9

3 2 1

456789

89

18 17

7

16

6

15

5

14

4

13

3

12

2

11

1

1043 5 6 7

16151412 13

21 8 9

17 181110

7

1413

65

1211

43

109

21

8

7

14

6

13

5

12

4

11

3

10

2

9

1

81 2

2 1

1

3 2

1

2 3

1 2 3 4 5

6 7 8 9 10 11 12 13 14 12345

14 13 12 11 10 9 8 7 6

Code Joining Wire Harness and Wire Harness (Connector Location)

IA1

IA2Engine Room Main Wire and Cowl Wire (Near the Driver Side R/B)

IB1 Front Door LH Wire and Cowl Wire (Left Kick Panel)

IC1

IC2 Floor No.2 Wire and Cowl Wire (Left Kick Panel)

IC3

ID1 Cowl Wire and Cowl Wire (Left Side of the Instrument Panel Reinforcement)

IE1

IE2Instrument Panel Wire and Cowl Wire (Left Side of the Steering Column)

IF1 Cowl Wire and Cowl Wire (Right Side of the Steering Column)

IG1 Cowl Wire and A/C Sub No.1 Wire (Left Side of the Blower Unit)

IH1 Instrument Panel Wire and A/C Sub No.2 Wire (Left Side of the Blower Unit)

Page 46: Lexus_GS300_GS430_service_manual 2

Engine RoomMain Wire

Floor No.2Wire

Curtain ShieldAirbag No.2 Wire

InstrumentPanel Wire

Curtain ShieldAirbag No.1 Wire

A/C SubNo.2 Wire

Floor No.1Wire

Front DoorRH Wire

Roof Wire

A/C SubNo.1 Wire

Cowl Wire

Engine RoomMain Wire

Front DoorLH Wire

IK1

IL2

IL3

IL1

IQ1

IM1IN1 IM2IJ3IJ1IJ2 Floor No.1Wire

IP1

II2II1 II4 II3

66

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

: Location of Connector Joining Wire Harness and Wire Harness[LHD]

Page 47: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

67

E

Connector Joining Wire Harness and Wire Harness

II1 II2 BLUE II3 YELLOW II4 ORANGE

IJ3 ORANGEIJ2 BLUEIJ1 GRAY

IK1 IL1 BLUE IL2 ORANGE

IM1IL3

IQ1 YELLOWIP1 YELLOWIN1IM2 BLUE

1 2 2 19

18

8

1716

76

1514

54

1312

32

11

1

10

89

18 17

7

16

6

15

5

14

4

13

3

12

2

11

1

101 2

2 1 1 2 3 4

5 6 7 8 9 10 4 3 2 1

5678910

7

1413

65

1211

43

109

21

8

7

14

6

13

5

12

4

11

3

10

2

9

1

81 2 3 4 5 6 7 8 910 11 12 13 14 15 16 17 18 19 20 21 22

7 6 5 1

20 19 18 17 15 14 10

234

11121316

89

2122

1 23 4 5 6 78 9 10 11 12

12

34567

89101112

1 2 3 4

5 6 7 8 9 10 11 12

13 14 15 16 17

1234

56789101112

1314151617

9

18

8

1716

76

1514

54

1312

32

11

1

10

89

18 17

7

16

6

15

5

14

4

13

3

12

2

11

1

10

1 2 3 4

5 6 7 8 9 10 4 3 2 1

5678910

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 2012345678

91011121314151617181920

1 2 3 4

5 6 7 8 9 10 11 11

4 3 2 1

5678910

9

18

8

1716

76

1514

54

1312

32

11

1

10

89

18 17

7

16

6

15

5

14

4

13

3

12

2

11

1

10

1 2 121 2

12

1 2

12

Code Joining Wire Harness and Wire Harness (Connector Location)

II1

II2

II3Engine Room Main Wire and Cowl Wire (Near the Passenger Side J/B)

II4

IJ1

IJ2 Instrument Panel Wire and Cowl Wire (Left Side of the Blower Unit)

IJ3

IK1 Front Door RH Wire and Cowl Wire (Right Kick Panel)

IL1

IL2 Floor No.1 Wire and Cowl Wire (Right Kick Panel)

IL3

IM1

IM2Instrument Panel Wire and Floor No.1 Wire (Front RH Side of the Shift Lever)

IN1 Floor No.1 Wire and Cowl Wire (Front LH Side of the Shift Lever)

IP1 Floor No.2 Wire and Curtain Shield Airbag No.1 Wire (Left Side of Instrument Panel)

IQ1 Floor No.1 Wire and Curtain Shield Airbag No.2 Wire (Right Side of Instrument Panel)

Page 48: Lexus_GS300_GS430_service_manual 2

Rear DoorLH Wire

Roof Wire Front DoorRH Wire

Rear DoorRH Wire

Floor No.1Wire

Floor No.2Wire

Front DoorLH Wire

BA1

BB1 BL

BJ BK

BM

68

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

: Location of Connector Joining Wire Harness and Wire Harness: Location of Ground Points

[LHD]

Page 49: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

69

E

Connector Joining Wire Harness and Wire Harness

1 23 4 5 6 78 9 10 11 12

12

34567

89101112

1 23 4 5 6 78 9 10 11 12

12

34567

89101112

BA1 BB1

Code Joining Wire Harness and Wire Harness (Connector Location)

BA1 Rear Door LH Wire and Floor No.2 Wire (Under the Center Pillar LH)

BB1 Rear Door RH Wire and Floor No.1 Wire (Under the Center Pillar RH)

Page 50: Lexus_GS300_GS430_service_manual 2

Front SeatLH Wire

Floor No.1Wire

Front SeatRH Wire

Floor No.2Wire

BC1

BD1

70

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

: Location of Connector Joining Wire Harness and Wire Harness[LHD]

Page 51: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

71

E

Connector Joining Wire Harness and Wire Harness

1 23 4 5 6 78 9 10 11 12

12

34567

89101112

1 23 4 5 6 78 9 10 11 12

12

34567

89101112

BC1 BD1

Code Joining Wire Harness and Wire Harness (Connector Location)

BC1 Floor No.2 Wire and Front Seat LH Wire (Under the Driver’s Seat)

BD1 Floor No.1 Wire and Front Seat RH Wire (Under the Front Passenger’s Seat)

Page 52: Lexus_GS300_GS430_service_manual 2

Engine No.2Wire

Cowl Wire

Relay BlockWire

Engine Wire

Engine No.4Wire

Engine RoomMain Wire

EC1

EA3

EA2

EB1

EB2

EE EDEC

EBEA

72

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

: Location of Connector Joining Wire Harness and Wire Harness: Location of Ground Points

[RHD : 3UZ–FE]

Page 53: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

73

E

Connector Joining Wire Harness and Wire Harness

1 2 3 4

5 6 7 8 9 10 4 3 2 1

5678910

1 2 3

4 5 6 7 8 9

3 2 1

456789

1 23 4 5 6 78 9 10 11 12

12

34567

89101112

1 2

3 4

12

3432

1

3 2

1

EA2 EA3

EB1 EB2 EC1 BLACK

Code Joining Wire Harness and Wire Harness (Connector Location)

EA2

EA3Engine Wire and Cowl Wire (Inside of the ECU Box)

EB1

EB2Cowl Wire and Relay Block Wire (Inside of the Engine Room No.3 R/B)

EC1 Engine No.2 Wire and Engine Wire (Near the Starter)

Page 54: Lexus_GS300_GS430_service_manual 2

Cowl Wire

Relay BlockWire

Engine Wire

Engine No.4Wire

Engine RoomMain Wire

EA4

EA3

EA2

EA1

EB1

EB2

EE EDEC

EBEA

Engine No.2Wire

74

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

: Location of Connector Joining Wire Harness and Wire Harness: Location of Ground Points

[RHD : 2JZ–GE]

Page 55: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

75

E

Connector Joining Wire Harness and Wire Harness

1 23 4 5 6 78 9 10 11 12

12

34567

89101112

1 2 3 4

5 6 7 8 9 10 4 3 2 1

5678910

1 2 3

4 5 6 7 8 9

3 2 1

456789

1 2 3 45 6 7 8 9 10 11 11

4 3 2 1

5678910

1 23 4 5 6 78 9 10 11 12

12

34567

89101112

1 2

3 4

12

34

EA1 EA2

EA3 EA4

EB2EB1

Code Joining Wire Harness and Wire Harness (Connector Location)

EA1

EA2

EA3Engine Wire and Cowl Wire (Inside of the ECU Box)

EA4

EB1

EB2Cowl Wire and Relay Block Wire (Inside of the Engine Room No.3 R/B)

Page 56: Lexus_GS300_GS430_service_manual 2

InstrumentPanel Wire

Floor No.2Wire

A/C SubNo.1 Wire

Curtain ShieldAirbag No.1 Wire

Curtain ShieldAirbag No.2 Wire

Floor No.1Wire

Front DoorRH Wire

Engine RoomMain Wire

A/C SubNo.2 Wire

Floor No.1Wire

Cowl WireRoof Wire

Engine RoomMain Wire

Front DoorLH Wire

IC1

IA1

IB1

IA3

IA2

IC2

IC3ID2ID1 IE1ID3 IF1

IG IIIH

IF

76

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

: Location of Connector Joining Wire Harness and Wire Harness: Location of Ground Points

[RHD]

Page 57: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

77

E

Connector Joining Wire Harness and Wire Harness

IA1 ORANGE IA2 BLUE IA3

IC2 ORANGEIC1 BLUEIB1

IC3 ID1 GRAY

ID3 BLUE IE1ID2 ORANGE

IF1

1 2 3 4

5 6 7 8 9 10 4 3 2 1

5678910

9

18

8

1716

76

1514

54

1312

32

11

1

10

89

18 17

7

16

6

15

5

14

4

13

3

12

2

11

1

10

1 2 3 4

5 6 7 8 9 10 11 12

13 14 15 16 17

1234

56789101112

1314151617

9

18

8

1716

76

1514

54

1312

32

11

1

10

89

18 17

7

16

6

15

5

14

4

13

3

12

2

11

1

10

1 2 3 4

5 6 7 8 9 10 4 3 2 1

5678910

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 2012345678

91011121314151617181920

7

1413

65

1211

43

109

21

8

7

14

6

13

5

12

4

11

3

10

2

9

1

8

1

3 2

1

2 3

1 2 3 4 5

6 7 8 9 10 11 12 13 14 12345

14 13 12 11 10 9 8 7 6

2 31 13 2

1 23 4 5 6 78 9 10 11 12

12

34567

89101112

9

18

8

1716

76

1514

54

1312

32

11

1

10

89

18 17

7

16

6

15

5

14

4

13

3

12

2

11

1

10

Code Joining Wire Harness and Wire Harness (Connector Location)

IA1

IA2 Engine Room Main Wire and Cowl Wire (Near the Passenger Side R/B)

IA3

IB1 Front Door LH Wire and Cowl Wire (Left Kick Panel)

IC1

IC2 Floor No.2 Wire and Cowl Wire (Left Kick Panel)

IC3

ID1

ID2 Instrument Panel Wire and Cowl Wire (Right Side of the Blower Unit)

ID3

IE1 Cowl Wire and A/C Sub No.1 Wire (Right Side of the Blower Unit)

IF1 Instrument Panel Wire and A/C Sub No.2 Wire (Right Side of the Blower Unit)

Page 58: Lexus_GS300_GS430_service_manual 2

Floor No.2Wire

Curtain ShieldAirbag No.2 Wire

InstrumentPanel Wire

Curtain ShieldAirbag No.1 Wire

A/C SubNo.1 Wire

Front DoorRH Wire

EngineRoomMain Wire

Floor No.1Wire

A/C SubNo.2 Wire

Cowl Wire

Roof Wire

Engine RoomMain Wire

Front DoorLH Wire

IK1

IK2

IK3

IL1

IQ1

IM1IO1IG2IG1 IM2 IM3 Floor No.1Wire

IP1

IJ1 IJ2IH1 II1

78

GS 430/300 (EWD423F)

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Page 59: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

79

E

Connector Joining Wire Harness and Wire Harness

IG1 IG2 BLUE IH1 YELLOW II1

IK1 ORANGEIJ2IJ1 BLUE

IK2 YELLOW IK3 BLUE IL1

IM2 ORANGEIM1 BLUE

IM3 IP1 YELLOW IQ1 YELLOW IO1

9

18

8

1716

76

1514

54

1312

32

11

1

10

89

18 17

7

16

6

15

5

14

4

13

3

12

2

11

1

101 2

2 1

7

1413

65

1211

43

109

21

8

7

14

6

13

5

12

4

11

3

10

2

9

1

8

1 2 3 4

5 6 7 8 9 10 11 12

13 14 15 16 17

1234

56789101112

1314151617

9

18

8

1716

76

1514

54

1312

32

11

1

10

89

18 17

7

16

6

15

5

14

4

13

3

12

2

11

1

10

1 2 3 4

5 6 7 8 9 10 4 3 2 1

5678910

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 2012345678

91011121314151617181920

1 2 3 4

5 6 7 8 9 10 11 11

4 3 2 1

5678910

9

18

8

1716

76

1514

54

1312

32

11

1

10

89

18 17

7

16

6

15

5

14

4

13

3

12

2

11

1

10

1 2 12

1 2 3 4 5 5 4 3 2 1

89

18 17

7

16

6

15

5

14

4

13

3

12

2

11

1

1043 5 6 7

16151412 13

21 8 9

17 181110

1 2

2 1

1 2 3 4

5 6 7 8 9 10 4 3 2 1

5678910

1 2

12

1 2

12

Code Joining Wire Harness and Wire Harness (Connector Location)

IG1

IG2Instrument Panel Wire and Floor No.1 Wire (Front LH Side of the Shift Lever)

IH1

II1Cowl Wire and Cowl Wire (Left Side of the Steering Column)

IJ1

IJ2Instrument Panel Wire and Cowl Wire (Right Side of the Steering Column)

IK1

IK2 Engine Room Main Wire and Cowl Wire (Near the Driver Side J/B)

IK3

IL1 Front Door RH Wire and Cowl Wire (Right Kick Panel)

IM1

IM2 Floor No.1 Wire and Cowl Wire (Right Kick Panel)

IM3

IO1 Floor No.2 Wire and Cowl Wire (Front RH Side of the Shift Lever)

IP1 Floor No.2 Wire and Curtain Shield Airbag No.1 Wire (Left Side of Instrument Panel)

IQ1 Floor No.1 Wire and Curtain Shield Airbag No.2 Wire (Right Side of Instrument Panel)

Page 60: Lexus_GS300_GS430_service_manual 2

Rear DoorLH Wire

Roof Wire Front DoorRH Wire

Rear DoorRH Wire

Floor No.1Wire

Floor No.2Wire

Front DoorLH Wire

BA1

BB1 BL

BK

BM

80

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

: Location of Connector Joining Wire Harness and Wire Harness: Location of Ground Points

[RHD]

Page 61: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

81

E

Connector Joining Wire Harness and Wire Harness

1 23 4 5 6 78 9 10 11 12

12

34567

89101112

1 23 4 5 6 78 9 10 11 12

12

34567

89101112

BA1 BB1

Code Joining Wire Harness and Wire Harness (Connector Location)

BA1 Rear Door LH Wire and Floor No.2 Wire (Under the Center Pillar LH)

BB1 Rear Door RH Wire and Floor No.1 Wire (Under the Center Pillar RH)

Page 62: Lexus_GS300_GS430_service_manual 2

Front SeatLH Wire

Floor No.1Wire

Front SeatRH Wire

Floor No.2Wire

BC1

BD1

82

GS 430/300 (EWD423F)

E ELECTRICAL WIRING ROUTING

: Location of Connector Joining Wire Harness and Wire Harness[RHD]

Page 63: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

83

E

Connector Joining Wire Harness and Wire Harness

1 23 4 5 6 78 9 10 11 12

12

34567

89101112

1 23 4 5 6 78 9 10 11 12

12

34567

89101112

BC1 BD1

Code Joining Wire Harness and Wire Harness (Connector Location)

BC1 Floor No.2 Wire and Front Seat LH Wire (Under the Front Passenger’s Seat)

BD1 Floor No.1 Wire and Front Seat RH Wire (Under the Driver’s Seat)

Page 64: Lexus_GS300_GS430_service_manual 2

H PART NUMBER OF CONNECTORS

Code Part Name Part Number Code Part Name Part Number

GS 430/300 (EWD423F)

Note: Not all of the above part numbers of the connector are established for the supply.

Nota: Toutes les références du connecteur ne sont pas définies pour la fourniture.

128

A 1 A/C Ambient Temp. Sensor 90980–11070

A 2 A/C Condenser Fan Motor 90980–10928

A 3 A/C Magnetic Clutch and Lock Sensor 90980–11016

A 4A/C Triple Pressure SW (A/C Dual andSingle Pressure SW) 90980–10943

A 5 ABS & TRC & VSC Actuator 90980–11151

A 6 ABS & TRC & VSC Actuator 90980–10895

A 7 ABS & TRC & VSC Actuator 90980–11413

A 8 ABS Speed Sensor Front LH

A 9 ABS Speed Sensor Front RH90980–11074

Accel Position Sensor (2JZ–GE) 90980–11150A10

Accel Position Sensor (3UZ–FE) 90980–11144

A11 Air Flow Meter 90980–11317

A12 Airbag Sensor Front LH

A13 Airbag Sensor Front RH90980–11856

A14 Alternator 90980–09218

A15 Alternator 90980–11349

A16 A/C Control Assembly 90980–11392

A17 A/C Control Assembly 90980–11391

A/C Room Temp. Sensor (LHD) 90980–10825A18

A/C Room Temp. Sensor (RHD) 90980–11918

A19 A/C Solar Sensor 90980–11053

A20 A/C Thermistor 90980–10825

A21 A/T Shift Position Illumination 90980–11212

A22 ABS & TRC & VSC ECU 90980–11935

A23 ABS & TRC & VSC ECU 90980–11476

A24 ABS & TRC & VSC ECU 90980–11637

A25 ABS & TRC & VSC ECU 90980–11638

A26 ABS Deceleration Sensor 90980–11182

A27 Air Inlet Control Servo Motor

A28 Air Mix Control Servo Motor (Driver Side)

A29Air Mix Control Servo Motor (FrontPassenger Side)

90980–11165

A30 Air Vent Mode Control Servo Motor

A31Airbag Squib (Front Passenger AirbagAssembly) 90980–11884

A32 Airbag Squib (Steering Wheel Pad) 90980–10850

A33 Automatic Light Control Sensor 90980–11107

A34 ABS Speed Sensor Rear LH 90980–11060

A35 ABS Speed Sensor Rear RH 90980–11300

A36 Ashtray Illumination Rear LH

A37 Ashtray Illumination Rear RH90981–11041

A38 Auto Antenna Control Relay and Motor 90980–10799

B 1 Brake Fluid Level Warning SW 90980–11009

B 2 Blower Motor 90980–10385

B 3 Blower Motor Controller 90980–11579

B 4 Blower Motor Controller 90980–11667

B 5 Body ECU No.1

B 6 Body ECU No.290980–11877

B 7 Buckle SW LH

B 8 Buckle SW RH90980–11399

B 9Buckle SW LH and Seat Belt WarningOccupant Detection Sensor

B10Buckle SW RH and Seat Belt WarningOccupant Detection Sensor

90980–11599

C 1 Camshaft Position Sensor 90980–10947

C 2 Camshaft Timing Oil Control Valve 90980–11162

C 3 Check Connector 90980–11195

Crankshaft Position Sensor (2JZ–GE) 90980–10947C 4

Crankshaft Position Sensor (3UZ–FE) 90980–11162

C 5 CD Automatic Changer 90980–11923

C 6 Center Airbag Sensor Assembly 90980–11873

C 7 Center Airbag Sensor Assembly 90980–11872

C 8 Center Airbag Sensor Assembly 90980–11871

C 9 Cigarette Lighter 90980–11606

C10 Clock 90980–10799

C11 Combination Meter 90980–11195

C12 Combination Meter 90980–11194

Combination SW (Europe, G.G.G.) 90980–11595C13

Combination SW (Australia) 90980–11671

C14 Combination SW 90980–11614

C15 Combination SW 90980–11616

C16 Combination SW 90980–11594

C17 Cellular Phone (Hand Set) 90980–10998

C18 Cellular Phone (Hand Set) 90980–10798

C19 Curtain Shield Airbag Squib LH

C20 Curtain Shield Airbag Squib RH90980–12109

C21 Camshaft Timing Oil Control Valve LH

C22 Camshaft Timing Oil Control Valve RH90980–11162

D 1 Daytime Running Light Relay 90980–10807

D 2 DLC3 90980–11665

D 3 Diode (Luggage Door Open Detection) 90980–11071

D 4 Door Courtesy Light Front LH

D 5 Door Courtesy Light Front RH

D 6 Door Courtesy Light Rear LH90980–11148

D 7 Door Courtesy Light Rear RH

D 8 Door Courtesy SW Front LH

D 9 Door Courtesy SW Front RH

D10 Door Courtesy SW Rear LH90980–11156

D11 Door Courtesy SW Rear RH

D12 Door Lock Control SW LH

D13 Door Lock Control SW RH90980–11013

Page 65: Lexus_GS300_GS430_service_manual 2

H

Code Part Name Part Number Code Part Name Part Number

GS 430/300 (EWD423F)

Nota : No todos los números de las partes del conector indicados arriba están dispuestos para el suministro.

Anmerkung : Nicht alle der obenerwähnten Teile–Nummern der Stecker werden für die Lieferung etabliert.

129

D14Door Lock Motor and Door Lock DetectionSW Rear LH

D15Door Lock Motor and Door Lock DetectionSW Rear RH

90980–11150

D16Door Lock Motor, Door Key Lock andUnlock SW and Door Lock Detection SWFront LH

D17Door Lock Motor, Door Key Lock andUnlock SW and Door Lock Detection SWFront RH

90980–11858

D18 Driver Door ECU 90980–11595

D19 Driver Door ECU 90980–11648

D20 Driver Door ECU 90980–11594

D21 Driving Position Memory SW 90980–11165

D22 Door Lock Motor and SW Front LH

D23 Door Lock Motor and SW Front RH90980–11539

D24 Door Lock Motor and SW Rear LH

D25 Door Lock Motor and SW Rear RH90980–11535

E 1 ECT Solenoid 90980–11151

Engine and ECT ECU (2JZ–GE) 90980–11421E 2

Engine and ECT ECU (3UZ–FE) 90980–12144

Engine and ECT ECU (2JZ–GE) 90980–11476E 3

Engine and ECT ECU (3UZ–FE) 90980–12145

Engine and ECT ECU (2JZ–GE) 90980–11586E 4

Engine and ECT ECU (3UZ–FE) 90980–12143

Engine and ECT ECU (2JZ–GE) 90980–11637E 5

Engine and ECT ECU (3UZ–FE) 90980–12146

Engine and ECT ECU (2JZ–GE) 90980–11638E 6

Engine and ECT ECU (3UZ–FE) 90980–12142

E 7 Engine and ECT ECU (2JZ–GE) 90980–11423

E 8 Engine Hood Courtesy SW 90980–11189

E 9 Engine Oil Level Sensor 90980–11235

E10 Exhaust Gas Sensor 90980–10831

E11 ECT Pattern Select SW 90980–11165

F 1 Front Fog Light LH

F 2 Front Fog Light RH90980–11096

F 3 Front Side Turn Signal Light LH

F 4 Front Side Turn Signal Light RH90980–11162

F 5 Front Turn Signal and Clearance Light LH

F 6 Front Turn Signal and Clearance Light RH90980–10942

F 7 Front Wiper Motor 90980–11599

F 8 Fuel Lid Opener SW 90980–10825

F 9 Front Door Speaker LH

F10 Front Door Speaker RH90980–10935

F11 Front Passenger Door ECU 90980–11594

F12 Front Passenger Door ECU 90980–11648

F13 Front Passenger Door ECU 90980–11595

F14 Fuel Lid Opener Motor 90980–11150

F15 Fuel Pump and Sender 90980–11077

F16 Fuel Pump Control ECU 90980–10862

F17 Fuel Sender (Sub) 90980–11140

G 1 Glove Box Light 90980–11148

G 2 Glove Box Light SW 90980–11098

G 3 Gateway ECU 90980–11911

H 1 Headlight Beam Level Control Actuator LH

H 2 Headlight Beam Level Control Actuator RH90980–11016

H 3 Headlight Beam Level Control ECU 90980–10897

H 4 Headlight Beam Level Control ECU 90980–10891

H 5 Headlight Beam Level Control Motor 90980–11144

H 6 Headlight Cleaner Control Relay 90980–10939

H 7 Headlight Cleaner Motor 90980–11410

H 8 Headlight Control ECU LH

H 9 Headlight Control ECU RH90980–11255

H10 Headlight LH (High) 90980–11095

H11 Headlight LH (Low) 90980–11096

H12 Headlight RH (High) 90980–11095

H13 Headlight RH (Low) 90980–11096

Heated Oxygen Sensor (Bank 1 Sensor 1)(2JZ–GE) 90980–11028

H14Heated Oxygen Sensor (Bank 1 Sensor 1)(3UZ–FE) 90980–10869

H15 Heated Oxygen Sensor (Bank 1 Sensor 2) 90980–11028

H16 Heated Oxygen Sensor (Bank 2 Sensor 1) 90980–10869

H17 Height Control Sensor (Front) 90980–11929

H18 Horn LH

H19 Horn RH90980–10619

H20 Hazard SW 90980–10801

H21 Headlight Beam Level Control SW 90980–10996

Headlight Cleaner SW (LHD) 90980–10797H22

Headlight Cleaner SW (RHD) 90980–10601

H23 Heated Oxygen Sensor (Bank 2 Sensor 2) 90980–11028

H24 Height Control Sensor (Rear) 90980–11298

H25 High Mounted Stop Light (Bulb Type) 90980–10908

H26 High Mounted Stop Light (LED Type) 90980–11368

I 1 Igniter 90980–11653

I 2 Ignition Coil No.1

I 3 Ignition Coil No.2 90980–11246

I 4 Ignition Coil No.3

I 5 Injector No.1

I 6 Injector No.2

I 7 Injector No.390980–11153

I 8 Injector No.4

Page 66: Lexus_GS300_GS430_service_manual 2

H PART NUMBER OF CONNECTORS

Code Part Name Part Number Code Part Name Part Number

GS 430/300 (EWD423F)

Note: Not all of the above part numbers of the connector are established for the supply.

Nota: Toutes les références du connecteur ne sont pas définies pour la fourniture.

130

I 9 Injector No.5

I10 Injector No.690980–11153

I11 Ignition Key Cylinder Light 90980–10906

I12 Ignition SW 90980–11615

I13 Inner Mirror 90980–11186

I14 Interior Light Rear LH

I15 Interior Light Rear RH90980–11187

I16 Ignition Coil and Igniter No.1

I17 Ignition Coil and Igniter No.2

I18 Ignition Coil and Igniter No.3

I19 Ignition Coil and Igniter No.4

I20 Ignition Coil and Igniter No.590980–11885

I21 Ignition Coil and Igniter No.6

I22 Ignition Coil and Igniter No.7

I23 Ignition Coil and Igniter No.8

I24 Injector No.7

I25 Injector No.890980–11153

J 1 Junction Connector 90980–10803

J 2 Junction Connector 90980–11542

J 3 Junction Connector

J 4 Junction Connector90980–11661

J 5 Junction Connector 90980–10803

J 6 Junction Connector 90980–11398

J 7 Junction Connector 90980–11542

J 8 Junction Connector 90980–10976

J 9 Junction Connector 90980–11915

J10 Junction Connector 90980–11542

J11 Junction Connector 90980–11398

J12 Junction Connector 90980–10802

J13 Junction Connector 90980–11915

J14 Junction Connector 90980–11542

J15 Junction Connector 90980–11915

J16 Junction Connector 90980–11542

J17 Junction Connector 90980–11539

J18 Junction Connector 90980–10803

J19 Junction Connector

J20 Junction Connector90980–11542

J21 Junction Connector

J22 Junction Connector90980–10976

J23 Junction Connector

J24 Junction Connector90980–10803

J25 Junction Connector 90980–10803

J26 Junction Connector 90980–11542

J27 Junction Connector

J28 Junction Connector90980–11661

J29 Junction Connector 90980–10803

J30 Junction Connector 90980–11396

J31 Junction Connector 90980–11915

J32 Junction Connector 90980–10976

J33 Junction Connector 90980–11398

J34 Junction Connector 90980–10803

J35 Junction Connector 90980–11542

J36 Junction Connector 90980–11915

J37 Junction Connector 90980–10803

J38 Junction Connector 90980–11915

J39 Junction Connector 90980–11542

J40 Junction Connector 90980–10803

J41 Junction Connector 90980–11915

J42 Junction Connector 90980–10976

J43 Junction Connector 90980–11542

J44 Junction Connector

J45 Junction Connector90980–10976

J46 Junction Connector

J47 Junction Connector 90980–10803

J48 Junction Connector

J49 Junction Connector 90980–11542

K 1 Knock Sensor 1

K 2 Knock Sensor 290980–11166

K 3 Kick Down SW 90980–11156

L 1 Luggage Compartment Door Opener SW 90980–10860

L 2 License Plate Light LH

L 3 License Plate Light RH90980–11148

L 4 Light Failure Sensor 90980–10803

L 5Luggage Compartment Door Courtesy SWand Opener Motor 90980–10825

L 6Luggage Compartment Door Key UnlockSW 90980–11212

L 7 Luggage Compartment Light 90980–11148

L 8 Lumbar Support Control SW (Driver’s Seat)

L 9Lumbar Support Control SW (FrontPassenger’s Seat)

90980–10601

M 1 Master Cylinder Pressure Sensor 90980–11451

M 2 Multi–Display 90980–10799

M 3 Multi–Display 90980–11911

M 4 Moon Roof Control ECU 90980–10997

M 5 Moon Roof Control SW 90980–11488

M 6 Multi–Display 90980–11923

M 7 Mirror Retractor SW 90980–11090

N 1 Neutral Start SW 90980–11784

N 2 Noise Filter (Ignition) 90980–10843

Page 67: Lexus_GS300_GS430_service_manual 2

H

Code Part Name Part Number Code Part Name Part Number

GS 430/300 (EWD423F)

Nota : No todos los números de las partes del conector indicados arriba están dispuestos para el suministro.

Anmerkung : Nicht alle der obenerwähnten Teile–Nummern der Stecker werden für die Lieferung etabliert.

131

N 3 Navigation ECU 90980–11923

N 4 Navigation ECU 90980–11973

N 5 Noise Filter (Rear Window Defogger) 90980–11259

N 6 Noise Filter (Ignition No.1)

N 7 Noise Filter (Ignition No.2)90980–10843

O 1 O/D Direct Clutch Speed Sensor 90980–11156

O 2 Oil Pressure SW 90980–11363

P 2 PPS Solenoid 90980–11003

P 3 Parking Brake SW 90980–10871

P 4 Power Outlet 90980–10760

P 5 PPS ECU 90980–10797

P 6 Personal Light 90980–11187

P 7 Power Window Control SW Front LH

P 8 Power Window Control SW Front RH

P 9 Power Window Control SW Rear LH90980–10797

P10 Power Window Control SW Rear RH

P11 Power Window Master SW 90980–11469

P12 Power Window Motor Front LH

P13 Power Window Motor Front RH90980–11011

P14 Pretensioner LH

P15 Pretensioner RH90980–11862

P16 Power Seat Control SW (Driver’s Seat)

P17Power Seat Control SW (Front Passenger’sSeat)

90980–10997

P18 Power Seat ECU 90980–11527

P19 Power Seat ECU 90980–11502

P20Power Seat Motor (Driver’s Seat FrontVertical Control)

P21Power Seat Motor (Driver’s Seat LumbarSupport Control)

P22Power Seat Motor (Driver’s Seat RearVertical Control)

P23Power Seat Motor (Driver’s Seat RecliningControl)

P24Power Seat Motor (Driver’s Seat SlideControl) 90980–10825

P25Power Seat Motor (Front Passenger’s SeatFront Vertical Control)

P26Power Seat Motor (Front Passenger’s SeatLumbar Support Control)

P27Power Seat Motor (Front Passenger’s SeatRear Vertical Control)

P28Power Seat Motor (Front Passenger’s SeatReclining Control)

P29Power Seat Motor (Front Passenger’s SeatSlide Control) 90980–10825

P30Power Seat Position Sensor (Driver’s SeatFront Vertical Control) 90980–11296

P31Power Seat Position Sensor (Driver’s SeatRear Vertical Control)

P32Power Seat Position Sensor (Driver’s SeatReclining Control) 90980–10908

P33Power Seat Position Sensor (Driver’s SeatSlide Control)

P34 Power Steering Oil Pressure Sensor 90980–10845

R 1 Radiator Fan Motor 90980–10928

Radio and Player (Europe) 90980–12038R 2

Radio and Player (Except Europe) 90980–10996

Radio and Player (Europe) 90980–10803R 3

Radio and Player (Except Europe) 90980–10997

R 4 Radio and Player (Except Europe) 90980–11165

R 5 Rear Fog Light Relay 82660–20340

R 6 Rear Fog Light SW 90980–11090

R 7 Remote Control Mirror SW 90980–11657

R 8 Rheostat 90980–11165

R 9 Rear Combination Light LH 90980–11399

R10 Rear Combination Light LH 90980–11587

R11 Rear Combination Light RH 90980–11399

R12 Rear Combination Light RH 90980–11587

R13 Rear Door LH ECU

R14 Rear Door RH ECU90980–11877

R15 Rear Door Speaker LH

R16 Rear Door Speaker RH90980–10935

R17 Remote Control Mirror LH 90980–11590

R18 Remote Control Mirror RH 90980–11690

S 1 Speed Sensor (ECT) 90980–11156

S 2 Starter 90980–11400

S 3 Starter –

S 4 Seat Heater SW 90980–10797

S 5 Shift Lock Control ECU 90980–11450

S 6 Step Light LH

S 7 Step Light RH90980–12110

S 8 Stereo Component Amplifier 90980–10803

S 9 Stereo Component Amplifier 90980–10799

S10 Stereo Component Amplifier 90980–10997

S11 Stereo Component Amplifier 90980–10998

S12 Stop Light SW 90980–11118

S13 Side Airbag Sensor LH

S14 Side Airbag Sensor RH90980–11857

S16 Seat Heater (Driver’s Seat Back)

S17 Seat Heater (Driver’s Seat Cushion) 90980–10825

S18 Seat Heater (Front Passenger’s Seat Back)

Page 68: Lexus_GS300_GS430_service_manual 2

H PART NUMBER OF CONNECTORS

Code Part Name Part Number Code Part Name Part Number

GS 430/300 (EWD423F)

Note: Not all of the above part numbers of the connector are established for the supply.

Nota: Toutes les références du connecteur ne sont pas définies pour la fourniture.

132

S19Seat Heater (Front Passenger’s SeatCushion) 90980–10825

S21 Side Airbag Squib RH 90980–11864

T 1 Theft Deterrent Horn 90980–10619

Throttle Control Motor (2JZ–GE) 90980–10942T 2

Throttle Control Motor (3UZ–FE) 90980–11156

T 3 Throttle Position Sensor 90980–10711

T 4 Telephone Microphone 90980–11369

T 5 Tilt and Telescopic ECU 90980–10801

T 6 Transponder Key Amplifier 90980–10789

T 7 Turn Signal Flasher 90980–10799

T 8 Telephone Transceiver and Speaker Relay 90980–10802

T 9 Telephone Transceiver and Speaker Relay 90980–10803

U 1Unlock Warning SW and Key InterlockSolenoid 90980–10795

V 1 Variable Resistor 90980–10902

VSV (ACIS) (LHD) 90980–11149V 2

VSV (ACIS) (RHD)

V 3 VSV (EVAP)90980–11156

V 4 VSC Off SW 90980–11494

V 5 VSC Warning Buzzer 90980–10906

V 6 Vanity Light LH

V 7 Vanity Light RH90980–11369

V 8 VVT Sensor LH

V 9 VVT Sensor RH90980–10947

W 1 Washer Level Warning SW 90980–11068

W 2 Washer Motor 90980–10981

W 3 Water Temp. Sensor 90980–10736

W 4 Water Temp. SW 90980–11235

W 5 Wireless Door Lock Buzzer 90980–11156

W 6 Wireless Door Lock Control ECU 90980–11165

W 7 Woofer (Speaker) 90980–10825

Y 1 Yaw Rate Sensor 90980–10904

Page 69: Lexus_GS300_GS430_service_manual 2

H

Code Part Name Part Number Code Part Name Part Number

GS 430/300 (EWD423F)

Nota : No todos los números de las partes del conector indicados arriba están dispuestos para el suministro.

Anmerkung : Nicht alle der obenerwähnten Teile–Nummern der Stecker werden für die Lieferung etabliert.

133

Page 70: Lexus_GS300_GS430_service_manual 2

84

GS 430/300 (EWD423F)

F CONNECTOR LIST

1 221

213

12 3

4

1 2 3 4 5 6

7 8 9 11 1210

2

5

86

31

4

7

1 2

3 4 5

12 12 1 2 3 4

1 2 34 5 6

54321 1 2 1 2

1

1 2 3 1 2 3 4 5 6 7 8 9 10 11

12 13 141516171819 2021 22

1 2 3 4 5 6 7 8

9 10111213141516

1 2

1 2 3

1 21 2

211716151410

31272622

1311

2523

18

28

19

29

20

30

12

24

1 2 3 4 5 6 7 8 9 1

16141312118

24222017

2

109

1918 21

15

23

3 4 5 6 7

1 3 4 5 6 9

10 12131415 19

20 22 24 28

7

1617

252623

2

11

21

8

18

27

1 2 3 4 5 7

8 9 101112 15

1617 19 22

6

1314

202118

1 2 4 53 1 2 3 4 5 6 7

21

A1 A2 A3 A4 A5

A6 A7 A8 A9 A10

A10 A11 A12 A13 A14

A15 A16 A17 A18

A19 A20 A21 A22 A23

BLACK GRAY GRAY BLACK BLACK

BLACK BLACK GRAY GRAY (2JZ–GE) BLACK

(3UZ–FE) BLACK BLACK YELLOW YELLOW

BLACK (LHD) BLACK

BLACK

A24 A25 A26 A27BLACK BLACK

A18(RHD) BLACK

Page 71: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

85

F

1 2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 1 2

1 2 3 412 2 1

1 2 34 5 6 7 8

1 2 1 21 2

1 2 3

21 3 4 5 6 7 8 9 101112 13

14 15 16171819 2021222324 25

21 3 4 5 6 7 8 9 101112 13

14 15 16171819 2021222324 25

124 3

1 2 1 2

124 3

1 2 3

4 5

124 3

1 2 1 2 1 21 2 3

4 5

1 2 3 4 5 6

7 8 9 10 11

12 13 14 15 16 17 21

20

18

2322

19

1 2 1 2

109876

54321

A28 A29 A30 A31 A32

A33 A34 A35 A36 A37 A38

B1 B2 B3 B4

B5 B6 B7

BLACK BLACK YELLOW YELLOW

BLACK GRAY BLACK BLACK

GRAY BLACK BLACK BLACK

GRAY

B8(∗ 1) BLUE

∗ 1 : w/ Driving Position Memory

B10B8 C1 C1 C2GRAY(∗ 2) (2JZ–GE) BLACK (3UZ–FE) DARK GRAY BLACK

∗ 2 : w/o Driving Position Memory

B9GRAY

C3 C4 C4 C5BLACK (2JZ–GE) DARK GRAY (3UZ–FE) DARK GRAY

Page 72: Lexus_GS300_GS430_service_manual 2

86

GS 430/300 (EWD423F)

F CONNECTOR LIST

242523 26222021 2827

1 2 3 4 5 6

7 8 9 1011121314151617

1819

A B 1 2

3 4

1 2 34 5 6 7 8

11

2221

109

2019

87

1817

65

1615

43

1413

1 2

1243 5 6 7

1615141213

21 8 9

17181110

1 2 4 5

10 11 1314

3

12

986

181715

7

16

1 2 3 4 5 6 7 8

9 10 1112131415 16 171 2 3 4 5

6 7 8 9 10

1 2 3 4 5 6 1 2 3 4 5 6 7 8 9

10 11 12 131415 16 17 18

1 2 3 4 5 6

7 8 9 101112

A B

1 2 3 4 5 6

7 8 9 101112

A B

123

456

1238 7 6 5 4

1 2

1 2

643217 8 9 101112 14

513

16 15 14 13 12 11 10 9

8 7 6 5 4 3 2 1

1 2 3

1 2 1 2

C6 C7 C8 C9 C10

C11 C12 C13

C13 C14 C15 C16

YELLOW YELLOW YELLOW BLACK

(Europe, G.C.C.)

(Australia) BLACK

C17 C18 C19 C20 C21

C22 D1 D2 D3

YELLOW YELLOW BLACK

BLACK BLUE GRAY

Page 73: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

87

F

1 2 1 2 1 2

1 2 1 2

1 2 1 21 2 3 4 1 2 3 4 1 2 3 4

1 2 3 4 1 2 3 4 5 6 1 2 3 4 5 6 1 2 4 5

10 11 1314

3

12

986

181715

7

16

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16

1 2 3 4 5 6 7 8 9

10 11 12 131415 16 17 18

1 2 3 4 5 6 7

1 2 3 45 6 7 8 9 10 11

1 2 3 45 6 7 8 9 10 11

1 2 3

4 5 6 7 8 9

1 2 3

4 5 6 7 8 91 2 3 4 5 67 8 9 11 1210

211716151410

31272622

1311

2523

18

28

19

29

20

30

12

24

1 2 3 4 5 6 7 8 9 1

17

29 3428

1918

98

20

10

21

33

11

76

13 14 15 16

22 23 26

12

432 5

2724 25

30 31 32

1

16141312118

24222017

2

109

1918 21

15

23

3 4 5 6 7

1 2

D5 D6 D7 D8 D9

D10 D11 D12 D13 D14

D15 D16 D17 D18

GRAY GRAY

GRAY GRAY BLACK

BLACK BLACK BLACK GRAY

D19 D20 D21 D22

D23 D24 D25 E1

GRAY GRAY BLUE

GRAY

E2 E2 E3(2JZ–GE) (3UZ–FE) (2JZ–GE)

D4

Page 74: Lexus_GS300_GS430_service_manual 2

88

GS 430/300 (EWD423F)

F CONNECTOR LIST

1

19

333231 3528

2320

118 12

34

13

76

15 16 17 18

24 25 26

14

432 5

27

29

21

9

30

22

10

1 2 3 4 5 6

7 8 9 101112

131415 1617

1

17

29 3228

1918

98

20

10

21

31

11

76

13 14 15 16

22 23 26

12

432 5

27

30

24 25

1 3 4 5 6 9

10 12131415 19

20 22 24 28

7

1617

252623

2

11

21

8

18

27

16

3231 3528

2017

9 10

34

11

65

13 14 15

23 24 26

12

321 4

27

29

18

7

30

19

8

21 22 25

33

1 2 3 4 5 7

8 9 101112 15

1617 19 22

6

1314

202118

1

17

292827 3126

1918

98

20

10

21

30

11

76

13 14 15 16

22 23 24

12

432 5

25

1 2 3 4 5 6 7 8 9 10 11 12 13

14 15 16171819 20212223 24 25 261 2

1 2

1 2 3 4 1 2 3 4 5 6 7 1 2 3 4 5 6 71 2 1 2

1 2 1 21 23 4

1 23 4

1 2 3

4 5

1 2

E3 E4 E4(3UZ–FE) (2JZ–GE) (3UZ–FE)

E5 E5 E6

E6 E7 E8 E9

E10 E11 E11 F1 F2

F3 F4 F5 F6 F7 F8

(2JZ–GE) (3UZ–FE) (2JZ–GE)

(3UZ–FE) (2JZ–GE) DARK GRAY BLACK GRAY

BLACK (Except G.C.C.) BLACK (G.C.C.) BROWN BROWN

GRAY GRAY GRAY GRAY GRAY GREEN

Page 75: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

89

F

1

2

1

21 2 3 4 5 6 7 8 9

10 11 12 131415 16 17 181 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16

1 2 4 5

10 11 1314

3

12

986

181715

7

16

1 2 3 4 1 2 3

4 5

1 2 3 4

5 6 7 8 9 10

1 2 1 21 2

7

1413

65

1211

43

109

21

8

213

213

1 2 3 4

5 6 7 8

1 2 3 4

5 6 7 8

1 2 34 5 6

1

4 5

2 3

6

1 2

1 2 1 21 2 1 2 1 2

1 2 21

3 41 2

3 4

21

3 41 2

3 42 14 3

F9 F10 F11 F12GRAY GRAY

F13 F14 F15 F16

F17 G1 G2 G3 H1

H2 H3 H4 H5

GRAY BLACK BLACK

BLACK GRAY

GRAY GRAY BLACK BLACKH6

H7 H8 H9 H10 H11 H12

H13 H14 H14 H15 H16 H17

BLACK

BLACK BLACK BROWN BLACK

BROWN (2JZ–GE) DARK GRAY (3UZ–FE) DARK GRAY DARK GRAY DARK GRAY DARK GRAY

Page 76: Lexus_GS300_GS430_service_manual 2

90

GS 430/300 (EWD423F)

F CONNECTOR LIST

1 1

1 2

5

3 4

6 7 8 9 10

1 2

3 4 5 61 2

3 4 5 6

1 2 3 4

21

3 43 2 1 1 32 12

1 2 3 4 5 109876

1 2 1 2 1 2

1 2 1 2 1 2 1 2 1 2 1 2

1 2 1 2 1 2 1 2 1 2 1 21 2

1 2 3 4

5 6 7 8

1234

1234

1234

1 2 3 4

1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4

H18 H19 H20 H21 H22 H22BLACK BLACK BLACK GRAY (LHD) (RHD) BLACK

H23 H24 H25 H26

I1 I2 I3 I4

I5 I5 I6 I6 I7 I7

I8 I9 I9 I10 I10 I11

I12 I13 I14 I15 I16

I17 I18 I19 I20

DARK GRAY

BLACK BLACK BLACK BLACK

(2JZ–GE) DARK GRAY (3UZ–FE) BLUE (2JZ–GE) BROWN (3UZ–FE) BLUE (2JZ–GE) DARK GRAY (3UZ–FE) BLUE

(2JZ–GE) BROWN (3UZ–FE) BLUE (2JZ–GE) DARK GRAY (3UZ–FE) BLUE (3UZ–FE) BLUE(2JZ–GE) BROWN

ORANGE BLACK

BLACK BLACK BLACK BLACK

I8

Page 77: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

91

F

1 2 3 4 1 2 3 4 1 2 3 4 1 2 1 2

BBAAAC C C D D D B A A A A A

A A A A A A A A A A B B C C

D D E E F F

A A A A A A

A A A A

C

EE

CC

EE

CC

EE

BB

ED

BA

DD

A A

D

A A A AA A A A A A A

A A B B C C

D D E E F F

AAAAAA A A A A A A A A A B B

A A A B B B B B

A A A A AA A A A A A A A

A A A A CCBAAA A B B B C C

C

EE

CC

EE

CC

EE

BB

ED

BA

DD

A A

D

A A A B BA A A B B B B B C

EE

CC

EE

CC

EE

BB

ED

BA

DD

A A

D

A A B C CA A B B B B C C

BBAAAA A A B B B B A B B C C

A A B D D D C C

A B B C CA A B D D D C C

A A

A A A A

A A

A A A A

BBAAAA A A B B B B

I21 I22 I23 I24 I25

J1 J2 J3 J4

J5 J6 J7 J8

J9 J10 J11 J12

J13 J14 J15

J16 J17

BLACK BLACK BLACK BLUE BLUE

BLACK ORANGE

BLUE BLACK GRAY

ORANGE BLACK GRAY

GRAY

J18 J19BLUE

J20 J21 J22 J23BLUE

Page 78: Lexus_GS300_GS430_service_manual 2

92

GS 430/300 (EWD423F)

F CONNECTOR LIST

BBAAAA A A B B B B

BBAAAA A A B B B B A A A A A

A A A A A A A A

A A B B C C

D D E E F F

A A B B C C

D D E E F F

A A A AAAAAAA A A A A A A

C

EE

CC

EE

CC

EE

BB

ED

BA

DD

A A

D

A A

A A A A

A A A A BBAAAA A A B B B B A A B C C

A A B B B B C C

C

EE

CC

EE

CC

EE

BB

ED

BA

DD

A A

D

BBAAAA A A B B B B

C

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CC

EE

CC

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BB

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BA

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A A

D

A A B C CA A B B B B C C

CCBAAA A B B B C C

C

EE

CC

EE

CC

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BB

ED

BA

DD

A A

D

A A

A A A A

BBAAAA A A B B B BA A

A A A A

1 1

A B B C CA A B D D D C C

A A

A A A A

BBAAAA A A B B B B

BBAAAA A A B B B B A A A B B

A A A B B B B B

J24 J25 J26 J27

J28 J29 J30 J31

ORANGE

BLUE BLACK

J32 J33 J34 J35

J36 J37 J38

J39 J40 J41 J42

BLACK

GRAY

J43 J44 J45 J46

J47 J48 J49 K1 K2

BLUE

BLACK DARK GRAY DARK GRAY

Page 79: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

93

F

1 21 2

1 2 1 254321

6 7 8 9 1011121 2

1 2 1 2 1 2 3 4 1 2 3 4

2 13

1 2 34 5 6 7 8

7

1413

65

1211

43

109

21

8

1 2 3 4

5 6 7 8 9 101 2 34 5 6

109876

54321

1 2 3 4

1 2 3 4 5

6 7 8 9

1 2

109876

54321

1 2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 18

1 1 2 1 2 1 2

11 2 1

1

2 1 2

3 4 5 6

1234

GRAY

K3 L1 L2 L3 L4 L5

L6 L7 L8 L9 M1 M2

M3 M4 M5 M6

BLACK BLACK

GRAY

M7 N1 N2 N3

N4 N5 N6 N7 O1

BLUE BLACK GRAY

GRAY GRAY BLACK

O2 P2 P3 P4 P5 P6GRAY GRAY BLUE

Page 80: Lexus_GS300_GS430_service_manual 2

94

GS 430/300 (EWD423F)

F CONNECTOR LIST

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20

1 2

3 4

5 6

1 2

3 4

5 6

21 21

1 2

3 4 5 6

1 2

3 4 5 6

1 2

3 4 5 6

1 2

3 4 5 6

1 2 3 4

5 6 7 8 9 10

1 2 3 4

5 6 7 8 9 101 2 3 4

5 6 7 8 9 10

1 2 3 4 5 6 7 8 910111213141516171819202122

1 2 1 2 1 2 1 2 1 2 1 2 1 2

1 2 1 2 1 2 1 2 1 2 1 32

1 32 1 32 1 32

211 2 3

5 6 7 8 9 10

11 12 13 14

3 421

15 16 17 18 19 20

543216 7 8 9 101112

1 2

3 4 5 6

1 2 3 4

5 6 7 8 9 10

P11 P12 P13 P14 P15YELLOW YELLOW

P7 P8 P9 P10

P16 P17 P18 P19

P20 P20 P21 P22 P23

BLACK BLACK

(LHD) ORANGE (RHD) BLUEP24 P25

P25 P26 P27 P28 P29 P30

(LHD) BLUE

(RHD) ORANGE BLUE

P31 P32 P33 R1GRAY

P34BLACK

R2 R3(∗ 1) (∗ 2) (∗ 1) (∗ 2)

R2 R3

∗ 1 : Europe∗ 2 : Except Europe

Page 81: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

95

F

1 2 3 41 2 3 4 5 6 7 8 9 10

1 2 3 4 5 6 7 1 2 3 4 5 6 7 124 3

12

34

56

124 3

12

34

56

21 3 4 5 6 7 8 9 101112 13

14 15 16171819 2021222324 25

21 3 4 5 6 7 8 9 101112 13

14 15 16171819 2021222324 25

1

2

1

2 12345

67891011121314

12345

67891011121314

1 21

11 2

3 4 5 61098765

4321

1 2 1 2

543216 7 8 9 101112

1 2 34 5 6 7 8

1 2 3 4

5 6 7 8 9 10

35

1 2

1 2 3 41 2 3 4 5 6 7

R6 R7

R8 R8 R9 R10

(RHD) BLUE BLACK

(LHD) (RHD) ORANGER11

R12 R13 R14 R15

R16 R17 R18

S1 S2 S3 S4 S5BLACK BLACK

S6 S7BLACK BLACK

S8 S9BLACK ORANGE

S10

R5 R6(LHD) DARK GRAY

R4(∗ 2)

∗ 2 : Except Europe

Page 82: Lexus_GS300_GS430_service_manual 2

96

GS 430/300 (EWD423F)

F CONNECTOR LIST

1 23 4 1 2 1 2

1 2 1 2 1 2 1 2

1

1 23 4

1 2 3 41 2

1 2

5

3 4

6 7 8 9 101 2 3 4 5

1 2 34 5 6 7 8

2357891012

411

16

543216 7 8 9 101112

2

3 4

1 1 2

3

1 2 1 2 1 2 1 2 1 2 3 4

1 2 1 2 1 2 1 2 1 21 2

1 2 321 21

1 21 2 1 2 3 4 5 6 7

1 2

1 2

3 4 5 6 1

3

2

4

1 23 4

S14YELLOW

S16 S17

S18

GRAY GRAY

GRAYS19

GRAYS20

YELLOWS21 T1 T2

T3 T4 T5 T6

T7 T8 T9

YELLOW BLACK (2JZ–GE) GRAY

BLACK GRAY

BLACKU1 V1

V2 V2 V3

BLACK

(2JZ–GE) BROWN (3UZ–FE) BLACK (2JZ–GE) BLUEV3 V4

V5 V6 V7

(3UZ–FE) BLACK

BLACKV8

DARK GRAYV9 W1

W2 W3 W4

DARK GRAY BLACK

BLACK BLACKW5 W6

BLACK

T2(3UZ–FE) BLACK

S11 S12BLUE

S13YELLOW

Page 83: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)

97

F

1 2 54321

W7 Y1BLACK

Page 84: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)138

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Page 85: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)139

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Page 86: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)140

I OVERALL ELECTRICAL WIRING DIAGRAM

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Page 87: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)141

I

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Page 88: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)142

I OVERALL ELECTRICAL WIRING DIAGRAM

1718

1920

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Page 89: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)143

I

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Page 90: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)144

I OVERALL ELECTRICAL WIRING DIAGRAM

2526

2728

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S 4

30 /

GS

300

(C

ont'

d)( C

ont.

nex

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AB

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Page 91: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)145

I

2930

3132

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S 4

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GS

300

(C

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ont.

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3B

B1

11B

B1

2B

B1

6B

B1

818

27

O

B–R

L–R

G–W

42

87

W–R

O

B–R

L–R

G–W

Y

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CTY

CTY

EC

TYB

CY

LM

PX

2S

IGB

DR

CP

UB

1212

2317

10 65

43

2

W–B

Y–R

L–B

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PW

EP

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MD

NA

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MU

P

141

2224

G–B

G–R

G

BR–B

A–

A+

LSW

LSW

E

BJ

Rea

r flo

or p

artit

ion

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l LH

9B

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15GN

D

4

L–O

MP

X2

5B

B1

4B

B1

5IL

3

2019

Y

R–G R–G

Y

R–G

PC

T1R

RLP

2422

141

BR–B

G

G–B

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ELS

WA

–A

+

BL

Rea

r flo

or p

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pane

l RH

9B

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D

BM

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rter

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l RH

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ASE

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8B

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3

6

L–OL–OL–O

MP

X1

P 9

PO

WE

R W

IND

OW

CO

NTR

OL

SW

R

EA

R L

H

L–O

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L–W

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R14

RE

AR

DO

OR

RH

EC

UR

13R

EA

R D

OO

R L

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CU

J22

JUN

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ON

CO

NN

EC

TOR

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IlluminationRear LH<10–1>

EP

CT

DA

U

M

LOCKDETECTION

M

LOCKDETECTION

21

12

W–B

W–B

R

516

183

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L

21

12

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31

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76

D 7DOOR COURTESYLIGHT REAR RH

D11(∗ 8)DOOR COURTESY SW REAR RHD25(∗ 7)DOOR COURTESY SW REAR RH[DOOR LOCK MOTOR AND SW REAR RH]

R–Y

D10(∗ 8)DOOR COURTESY SW REAR LHD24(∗ 7)DOOR COURTESY SW REAR LH[DOOR LOCK MOTOR AND SW REAR LH]

D 6DOOR COURTESYLIGHT REAR LH

L–W

R–W

UP

DN

LMT

PLS

SG

ND

CD E

FG

9

W

DB

LS

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13A1+

Y

A1–

259

GR

13

W

Y

25

G–W B–R

L–W

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516

183

711

( ∗8)

( ∗7)

( ∗8)

( ∗7)

2110

2322

241

1317

1925

( ∗7)

( ∗8)

9B

( ∗7)

6B

8B

4A

3B

3A

7B

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( ∗8)

D14

A

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OR

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TOR

AN

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OR

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TOR

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94

57

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1917

113

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( ∗7)

( ∗8)

(∗ 10) (∗ 10)

(∗ 7)

(∗ 7)

(∗ 7)

9B

8B

6B

4A

4B

3A

5B

2A

7B

1A

3B

( ∗7)

AD

15

DO

OR

LO

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TOR

AN

D D

OO

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OC

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ETE

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ON

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( ∗8)

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AN

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∗ 8

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Lock

ing

∗ 7

: w/ D

oubl

e Lo

ckin

g

(∗ 7)

(∗ 7)

(∗ 7)

M

M

( ∗8)

Page 92: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)146

I OVERALL ELECTRICAL WIRING DIAGRAM

3334

3536

1 G

S 4

30 /

GS

300

(C

ont'

d)

A B C D E

Mu

ltip

lex

Co

mm

un

ica

tion

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tem

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HD

)

11B

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2

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9B

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4B

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1

CC

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L–R

L

W–R

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L–O

OL–Y

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L

21 M

6A

5A

P22POWER SEAT MOTOR(Driver' s Seat Rear Vertical Control)

Y–G

Y–R

Y–R

12 M

10A

9A

P20POWER SEAT MOTOR(Driver' s Seat Front Vertical Control)

W–R

W–G

W–G

12 M

4A

3A

P24POWER SEAT MOTOR(Driver' s Seat Slide Control)

B

B–R

B–R

22B

Y–B

2RC

LR

21B

Y–R

3RC

LF

19B

L–Y

10FUP

16B

L–B

6SLD

R

18B

Y

8LDW

N

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L

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F

7B

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N

5B 1S

SR

R

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V

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22

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V

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V

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13

2

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4

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P18

P19

, P

OW

ER

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AT

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UA

B

A

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L–O

B–R

L–W

W–R

VV

V

L–W L–W L–W

L–W

L–B

W–B

L–O

W–B

BR

W–B W–B

BRBRBR

BR

BR

BR

1

BR

BR

BR

BR

BR

O

W–B

L–O

L–O

B–R

J19JUNCTION CONNECTOR

( ∗4)

(∗ 3)

(∗ 3)

SG

ND

GN

D

+BS

LD+

SLD

–FR

V+

FRV

–LF

T+LF

T–R

CL+

RC

L–S

YS

BIG

MP

X1

MP

X2

P16

PO

WE

R S

EA

T C

ON

TRO

L S

W( D

river

's

Sea

t)

P32POWER SEAT POSITION SENSOR(Driver' s Seat Reclining Control)

P31POWER SEAT POSITION SENSOR(Driver' s Seat Rear Vertical Control)

P30POWER SEAT POSITION SENSOR(Driver' s Seat Front Vertical Control)

P33POWER SEAT POSITION SENSOR(Driver' s Seat Slide Control)

L 8LUMBAR SUPPORT CONTROL SW(Driver' s Seat)

P21

PO

WE

R S

EA

T M

OTO

R( D

river

's

Sea

t L

umba

r S

uppo

rt C

ontro

l)

J21

JUN

CTI

ON

CO

NN

EC

TOR

J23

JUN

CTI

ON

CO

NN

EC

TOR

∗ 7

: w/ D

oubl

e Lo

ckin

g∗

8 : w

/o D

oubl

e Lo

ckin

g

RC

LRR

CLF

FUP

SLD

RLD

WN

LUP

SLD

FFD

WN

E

REAR

FRONT

J23

JUN

CTI

ON

CO

NN

EC

TOR

W–B

16 WH

E1

M

13

2

SG

ND

PLS

PO

WE

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IND

OW

MO

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RE

AR

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7

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6

From AshtrayIlluminationRear RH<10–2>

27

6

1221

2317

10 65

43

2

W–B

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L–W

PW

EP

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MD

NA

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MU

P

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R W

IND

OW

CO

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OL

SW

R

EA

R R

H

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CT

DA

U

11

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2322

24

( ∗8)

( ∗7)

( ∗7)

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RE

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U

∗ 4

: w/o

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ing

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ition

Mem

ory

∗ 3

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on M

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y

Page 93: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)148

I OVERALL ELECTRICAL WIRING DIAGRAM

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11

12B2

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10A DOME

5A ECU–B2

2D7

2F7

2E5

2H12

30A D P/SEAT

20A D RR DOOR

1E9

1E6

20A D FR DOOR

40A AM1

1F2

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2

AC

C

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1

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1J1

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1E2

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112

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lex

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mm

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tion

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tem

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er

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urc

e

19A

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AU

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owl s

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H

AB

R

9A

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B 8BUCKLE SW RH

J47JUNCTIONCONNECTOR

7A

8A

6A

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W–R

W–R

O

G–W

V

BR–B

W

97

8

MIR

EM

IRB

MIR

S

181H

6

9

MP

X2

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RE

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TRO

LM

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OR

SW

V–RFrom LightFailureSensor<9–3>

HR

LYLF

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PX

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U

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BO

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R

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GR–R

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31

4

B

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AA

J42

JUN

CTI

ON

CO

NN

EC

TOR

See IlluminationSystem<11–1>

113

212

7J37JUNCTION CONNECTOR

A33

AU

TOM

ATI

C L

IGH

TC

ON

TRO

L S

EN

SO

R

G G

A

G–W

G–W

15A

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To Clock<27–4>

131HTR

LY

6

See IlluminationSystem<11–1>

5

See FrontFog LightSystem<7–4>

LG–BT

HA

EL

FFG

O

CLT

SC

LTB

CLT

E

EM

+M

SW

W

16A

RFO

G

25A

RFG

O

See Rear FogLight System<14–3>

(∗ 2)

9B

16A

( ∗1)

( ∗2)

13B

13A

( ∗1)

( ∗2)

A

J32

JUN

CTI

ON

CO

NN

EC

TOR

∗ 2

: Aus

tralia

∗ 1

: Eur

ope

C13

,

CO

MB

INA

TIO

N S

W

AB

CD

EF H

G IJ L

K MN P

O Q

12B

D1W–B W–B

W–B

15ID

3

To Multi–Display<28–4>

LG–B

LG–BLG–B

14A

G–WFrom Stop LightSW<9–4> S

TPI

5A 12

1B8

KS

WB

LVL

Y Y

Y–B

12

B B

W–B

U 1UNLOCK WARNING SW

4

B 1BRAKE FLUIDLEVEL WARNING SW

Y

B

From Engine andECT ECU<5–12><35–12>

EE

Und

er th

eA

BS

& T

RC

&V

SC

act

uato

r

A

W–B W–B

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A

17A

See FrontFog LightSystem<7–4> FF

OG

J40

JUN

CTI

ON

CO

NN

EC

TOR

W–B

A

L–W

L–R

L–Y

( ∗2)

L–Y

L–Y

G–W B L–

BL–

YB

–RB

–RG

–WG

–WG

–W O W

L–Y

Page 94: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)149

I

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56

78

2 G

S 4

30 /

GS

300

(C

ont'

d)( C

ont.

nex

t pag

e)

AB

A

5ID

3

21

21

12

21

8IC

1

14ID

3

R

2F4

2D9

1

32

2H6

2D4

1 32

2H4

2D2

1 32

21

21

P Q R

11B

13A

2B

8IJ

117

IJ1

B

W–R

L–Y

L–Y

L–Y

L–Y

L–Y

L–Y

L–Y

L–Y L–Y L–Y

L–Y

L–Y

L–Y

L–Y L–Y

L–Y

L–Y

L–Y

L–Y

R–B

R–G

W–B

W–B

W–B

W–B

R

R

G

W–B

G G

G

G

G

GG

GG

W–B

W–B

W–B

W–B

W–B

R–B

R–G

W

W

G–W

W–B

R–B

R–G

Mu

ltip

lex

Co

mm

un

ica

tion

Sys

tem

(R

HD

)

S 6STEP LIGHT LH

S 7STEP LIGHT RH

I11IGNITION KEYCYLINDER LIGHT

P 6PERSONAL LIGHT

L 7LUGGAGECOMPARTMENT LIGHT

I15INTERIOR LIGHT REAR RH

I14INTERIOR LIGHT REAR LH

V 6VANITY LIGHT LH

V 7VANITY LIGHT RH

R–B

R–G

GR

C11

C12

,

CO

MB

INA

TIO

N M

ETE

R

AB

∗ 1

: Eur

ope

∗ 2

: Aus

tralia

GR

ONOFF

DOOR

13

2

SR

–WR

–W

R–W

D 3DIODE(Luggage DoorOpen Detection)

GR

( ∗1)

(∗ 1) (∗ 1)

L–Y(∗ 2)

CD

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GH

IJ

KL

MN P

O Q

W–R

CD

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GH

IJ

KL

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L–W

L–R

L–Y

( ∗2)

L–Y

L–Y

G–W B L–

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L–Y

L–W

L–R

L–Y

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BL–

YB

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2267 24

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MP

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MP

X2

MP

X1

MP

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C 7CENTER AIRBAGSENSOR ASSEMBLYT

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SC

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CU

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Page 95: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)150

I OVERALL ELECTRICAL WIRING DIAGRAM

��������������������������������������������������������

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300

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AB

A

10ID

13

ID1

N O P

E 5ENGINE AND ECT ECU

B

W–R

LLW

W

516

L–Y

R–B

R–G

Mu

ltip

lex

Co

mm

un

ica

tion

Sys

tem

(R

HD

)

A16

A/C

CO

NTR

OL

AS

SE

MB

LY

MP

X1

MP

X2

MP

X+

MP

X–

∗ 4

: w/o

LE

XU

S N

avig

atio

n S

yste

m∗

3 : w

/ LE

XU

S N

avig

atio

n S

yste

m

2021

CD

EF

GH

IJ

KL

MN

O

W–R

CD

EF

GH

IJ K

L

28 27

( 2JZ

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)( 3

UZ–

FE)

( 3U

Z–FE

)( 2

JZ–G

E)

L–W

L–R

L–Y

G–W B L–

BL–

YB

–RB

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–W O GR W

5II1

4II1

P Q SR

1IJ

28

IJ2

1J4

1H10

512

2

A

82

911

4

1

AA

GTX

+G

TX–

+B

WW

GR

W

W W G–W G–W

BR

Y

BR

Y

GRGR

W

W

G–W

L–Y

B–R

(∗ 1)

(∗ 1)

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X

MP

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MP

D2

AC

CIG

BA

TT

15A

RA

DIO

NO

. 2

J38JUNCTIONCONNECTOR

C15STEERING PAD SW[COMB. SW]

G 3

GA

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AY

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U

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2G4

2F13

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owl s

ide

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l RH

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3

16IC

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L 5LUGGAGE COMPARTMENTDOOR COURTESY SWAND OPENER MOTOR

12

8

11

AA A

TR+

LGC

YG

ND

BE

CU

W–B

G–W

G–W

G–W

W–B

W–B

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J37JUNCTIONCONNECTOR

1SH P

2B9

2

T 1THEFT DETERRENTHORN

M

AA

DD J42JUNCTIONCONNECTOR

G–W

G–W

G–W

13IM

32G

6

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nel

W–B

A

J32

JUN

CTI

ON

CO

NN

EC

TOR

QW

–B

A

G–W

G–W

L–Y L–Y

To R

adio

and

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yer

( ∗4)

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–3>

To M

ulti–

Dis

play

( ∗3)

<28

–5>

R–WR–G

R–B

W–B

M

L–W

L–R

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G–W B L–

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–W B–R

B–R

G–W O

B–R

( ∗1)

B 5

A

BO

DY

EC

U N

O. 1

A19

MP

X1

15A

B B AC

C

W

GR

J38JUNCTIONCONNECTOR

GR

(∗ 1)

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(∗ 1)

EB

Left

fend

er

7CG W–BW–B

14GN

D W–B

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( 3U

Z–FE

)

AD

∗ 1

: Eur

ope

(∗ 1)

(∗ 1) (∗ 1)

(∗ 1)

(∗ 1)

(∗ 1)

(∗ 1)

Page 96: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)151

I

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Page 97: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)152

I OVERALL ELECTRICAL WIRING DIAGRAM

1718

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Page 98: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)153

I

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Page 99: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)154

I OVERALL ELECTRICAL WIRING DIAGRAM

2526

2728

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S 4

30 /

GS

300

(C

ont'

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Page 100: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)155

I

2930

3132

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S 4

30 /

GS

300

(C

ont'

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SW

RE

AR

LH

B

R13

RE

AR

DO

OR

LH

EC

U

1B

1A

2A

2B

DOOR COURTESY SW REAR RH

BD11

( ∗7)

( ∗8)

( ∗7)

( ∗8)

1514

95

718

82

( ∗8)

( ∗7)

711

( ∗8)

( ∗7)

9

W

DB

LS

GR

A1+

13

A1–

25

Y

1B

3A

2B

7A

3B

5A

4B

4A

8A

6A

9A

( ∗7)

( ∗8)

D15

DO

OR

LO

CK

MO

TOR

AN

D D

OO

R L

OC

KD

ETE

CTI

ON

SW

RE

AR

RH

B

B–R

1112

2110

2322

2420

1917

113

25( ∗

7)( ∗

8)

( ∗8)

D24

( ∗7)

DO

OR

LO

CK

MO

TOR

AN

D S

W R

EA

R L

H

A

(∗ 7)

(∗ 7)

(∗ 7)

(∗ 8)

(∗ 7)D25 A

DOOR COURTESY SW REAR RH[DOOR LOCK MOTOR AND SW REAR RH]

(∗ 7)

(∗ 7)

(∗ 7)

( ∗8)

A

DO

OR

LO

CK

MO

TOR

AN

D S

W R

EA

R R

H

( ∗7)

D25

M

M

Page 101: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)156

I OVERALL ELECTRICAL WIRING DIAGRAM

3334

3536

2 G

S 4

30 /

GS

300

(C

ont'

d)

A B C D E

Mu

ltip

lex

Co

mm

un

ica

tion

Sys

tem

(R

HD

)

10B

11B

3B

D1

10B

D1

16IM

1

8B

9B

7B

D1

4B

D1

16IM

3

BB

21 M

2A

1A

P23POWER SEAT MOTOR(Driver' s Seat Reclining Control)

L–R

L

W–R

B–R

O

L–OL–Y

O

B–R

W–RW–RW–R

L

12 M

6A

5A

P22POWER SEAT MOTOR(Driver' s Seat Rear Vertical Control)

Y–G

Y–R

Y–R

21 M

10A

9A

P20POWER SEAT MOTOR(Driver' s Seat Front Vertical Control)

W–R

W–G

W–G

21 M

4A

3A

P24POWER SEAT MOTOR(Driver' s Seat Slide Control)

B

B–R

B–R

22B

Y–B

2RC

LR

21B

Y–R

3RC

LF

19B

L–Y

5FUP

16B

L–B

6SLD

R

18B

Y

7LDW

N

17B

Y–G

8LUP

15B

L

9SLD

F

7B

L–R

10FDW

N

5B 1S

SR

R

6B

V

3PV

CC

4B

Y–G

1SS

RL

3

3B

LG–R1SS

FV

3

14B

LG

1SS

RS

3

22

22

BM

Qua

rter

pane

l RH

11B

D1

V–W

V

Y–G

V

LG–R

V

LG

V

13B

M1

2

7A BL

Rea

r flo

or p

artit

ion

pane

l RH

12B

D1

8A

1B

D1

B A

42

3

B A

1

B A

P18

P19

,

PO

WE

R S

EA

T E

CU

AB

A

L–YOB

–R

L–W

W–R

VV

V

L–W L–W L–W

L–W

L–B

W–B

L–O

W–B

BR

W–B W–B

BRBRBR

BR

BR

BR

1

BR

BR

BR

BR

BR

O

W–B

O

B–R

J31

JUN

CTI

ON

CO

NN

EC

TOR

( ∗6)

(∗ 5)

(∗ 5)

SG

ND

GN

D

+BS

LD+

SLD

–FR

V+

FRV

–LF

T+LF

T–R

CL+

RC

L–S

YS

BIG

MP

X2

MP

X1

P16

PO

WE

R S

EA

T C

ON

TRO

L S

W( D

river

's

Sea

t)

P32POWER SEAT POSITION SENSOR(Driver' s Seat Reclining Control)

P31POWER SEAT POSITION SENSOR(Driver' s Seat Rear Vertical Control)

P30POWER SEAT POSITION SENSOR(Driver' s Seat Front Vertical Control)

P33POWER SEAT POSITION SENSOR(Driver' s Seat Slide Control)

L 8LUMBAR SUPPORTCONTROL SW(Driver' s Seat)

P21

PO

WE

R S

EA

T M

OTO

R( D

river

's

Sea

t L

umba

r S

uppo

rt C

ontro

l)

J47JUNCTIONCONNECTOR

J45

JUN

CTI

ON

CO

NN

EC

TOR

J47

JUN

CTI

ON

CO

NN

EC

TOR

∗ 5

: w/ D

rivin

g P

ositi

on M

emor

y∗

6 : w

/o D

rivin

g P

ositi

on M

emor

y

RC

LRR

CLF

FUP

SLD

RLD

WN

LUP

SLD

FFD

WN

E

REAR

FRONT

Page 102: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)157

I

����������������������������������������������������������������������

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12

34

3 G

S 4

30 /

GS

300

Ch

arg

ing

Sta

rtin

g a

nd

Ig

niti

on

(2

JZ–

GE

)P

ow

er

So

urc

e

11

11

1

1J3

2 7

AC

C

IG1

IG2

ST2

AM

14 6 8

AM

2

21

35

1

11

8E

A2

1A

1 B

EE

AB

CA

CA5A S

TAR

TER

1F1 5

EA

3

1F10

6

9

P N

4E

A3

1

21

21

21

6E

A2

AA

CC ED

1A B

2B

3B B

L IG S

1H4

10A

GA

UG

E

1J1

W–L

B–L

W–L

W–L

B–L

W

W–RW–R

B–LB–L

B–W

W–L

B–L

B–Y

B–W B

B12

22

22

11

11

B BB

W–B

BB

B B

B–L

( LH

D)

B–R

( RH

D)

B–L

B–W B–W B–W B–W

B–W

B–W

B–W

B–L

B–W

B–W

B–Y B–Y

B–W

W

B

B–R B

B–Y

B–L

B–R

BR BR

47

65

12

109

8

IGF

IN1

IN2

IN3

GN

D

C2

C3

C1

+BTA

C

B–L

Y(∗ 1)P–L(∗ 2)

1

W–L

R–L

W–L

B–Y

R–L R–L R–L

L–R(∗ 1)W–L(∗ 2)

I12

IGN

ITIO

N S

W

40A AM1

STA

RTE

RR

ELA

Y

BA

TTE

RY

S 2

S 3

,

STA

RTE

R

AB

To Engine andECT ECU<4–10><5–10><35–10>

JUNCTION CONNECTOR

BAJ27 J28,

N 1NEUTRAL START SW

5A ALT–S

120A ALT

15A AM2

40A MAIN

J16(

LHD

)J3

9(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

To Tachometer[Comb. Meter]<31–3>

J 1(

LHD

)J2

5(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

A14

A15

,

ALT

ER

NA

TOR

AB

To E

ngin

e an

d E

CT

EC

U<

4–10

><

5–10

>

N 2NOISE FILTER(Ignition)

I 2IGNITION COIL NO. 1

I 3IGNITION COIL NO. 2

I 4IGNITION COIL NO. 3

Und

er th

e A

BS

&TR

C &

VS

C a

ctua

tor

Rea

r si

de o

f the

inta

ke m

anifo

ld

3

J 1(

LHD

)J2

5(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

I 1 IGN

ITE

R

2E

A3B–Y

26A

27D

See MultiplexCommunicationSystem<1–8><2–8>

ENGINE AND ECT ECU

BAE 2 E 3,

RL

MP

X2

AA

W–B J 5(LHD), J29(RHD)JUNCTIONCONNECTOR

7IK

1

IA1

9( L

HD

)

( RH

D)

2IA

3

II48

( LH

D)

( RH

D)

13IA

2

IA2

7( L

HD

)

( RH

D)

C

B–YTo Check Connector<4–8><5–8>

BB

J18(

LHD

)J3

5(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

14IA

2

IA2

16( L

HD

)

( RH

D)

BAJ 3 J 4,

(RHD)

(LHD)

B B

11K

11A

( LH

D)

( RH

D)

∗ 1

: 3U

Z–FE

∗ 2

: 2JZ

–GE

15B

( ∗1)

( ∗2)

DE 5,

5E

A3

EA

39

1E

A3

EA

17

( ∗2)

( ∗1)

(∗ 2)

R(∗ 1)

(∗ 2)

Page 103: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)158

I OVERALL ELECTRICAL WIRING DIAGRAM

������������������������������������������������

���������������������������������������������������������������������������������

����������������������������������������

������������

12

34

4 G

S 4

30 /

GS

300

( Con

t. n

ext p

age)

1

15A ETCS

25A EFI

120A ALT

15A AM2

11

11

1K1

7. 5A OBD

40A AM1

1H12

1J3

2

AC

C

IG1

IG2

ST2

AM

14 6

7A

M2

9IA

1

11

21

35

11

1II1

8IC

2

54 M

EE

Und

er th

e A

BS

&TR

C &

VS

C a

ctua

tor

BK

Qua

rter

pane

l LH

BJ

Rea

r flo

orpa

rtitio

npa

nel L

H

1J1

10A

GA

UG

E

1D4 1

A

12B

2F13

2G6

IIR

ight

sid

eof

the

cow

l pan

el

1J6

5A IGN

1G7

K ML

B–L

W–R

W

B–Y

B–Y

L–Y

W–R

W–L

B

B–Y

B–Y

L–Y

W–B

B–R B–R B–R

W–B

R–L

B

W–B

W–G

W–B W–B W–B

B–O B–O

B–Y

B–Y

B–W

B–Y

B–R

B–W

B–W

B–WB–YL–Y

B–Y

W–B

L–R

L–W

11

11

47

E

65

98

710

A

E

16

AA

A

AA

A

FPC

DI

EFP

CG

SIL

BA

T

+BFP

+

A B

L–Y

B–L

B–R

B–R

B–R

B–O

B–L

B–R

GR

En

gin

e C

on

tro

l a

nd

En

gin

e I

mm

ob

ilise

r S

yste

m (

LH

D 2

JZ–

GE

)P

ow

er

So

urc

e

BA

TTE

RY

22

22

I12

IGN

ITIO

N S

WE

FIR

ELA

Y

F15FUEL PUMP

F16FUEL PUMPCONTROL ECU

J21

JUN

CTI

ON

CO

NN

EC

TOR

CHECK ENGINEWARNING LIGHT[COMB. METER]

BAC11 C12,

J16

JUN

CTI

ON

CO

NN

EC

TOR

B–YB

D 2DLC3

J15JUNCTIONCONNECTOR

B–Y

CB

–W

DB

–R

EB

–Y

B–O

F JW

–G

B–R

I

P–B

HG

R

NW

–B

W–B

A

W–B

2 1

A A

J 5JUNCTIONCONNECTOR

W–B

O

13

P–B

TC

IFLe

ft ki

ckpa

nel

J10

JUN

CTI

ON

CO

NN

EC

TOR A

AJ

8JU

NC

TIO

NC

ON

NE

CTO

R

W–B

W–B

LG–B

15 WFS

E

LG–B

G

Page 104: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)159

I

56

78

4 G

S 4

30 /

GS

300

(C

ont'

d)( C

ont.

nex

t pag

e)

En

gin

e C

on

tro

l a

nd

En

gin

e I

mm

ob

ilise

r S

yste

m (

LH

D 2

JZ–

GE

)

A D K L M

18B

BR

L–Y

21

14B

12B

24B

23B

2B

16B

W 3WATER TEMP. SENSOR

T 3THROTTLEPOSITION SENSOR

A10ACCEL POSITION SENSOR

15B

16E

8E

BA

BA

BB

BB

9E

A2

24F

25F

FA

FA

DB

DB ED

Rea

r si

de o

f the

inta

ke m

anifo

ld

7E

A3

8D

26F

10E

A4

3E

A4

11E

A4

11B

3B

12B

4B

11E

J 9JUNCTION CONNECTOR

JUNCTION CONNECTOR

BAJ 3 J 4,

J14

JUN

CTI

ON

CO

NN

EC

TOR

J 9

JUN

CTI

ON

CO

NN

EC

TOR

H23HEATED OXYGENSENSOR(Bank 2Sensor 2)

JUNCTION CONNECTOR

BAJ 3 J 4,

H15HEATED OXYGEN SENSOR(Bank 1 Sensor 2)

H16HEATED OXYGEN SENSOR(Bank 2 Sensor 1)

H14HEATED OXYGEN SENSOR(Bank 1 Sensor 1)

5D

C 3CHECK CONNECTOR

B C

( ∗1)

( ∗1)

E 6

E 7

,

EN

GIN

E A

ND

EC

T E

CU

EF

E 2

E 3

, A

B,

,

B–W

L–W

L–R

L

L–YL–Y

Y–G

Y–R

B–R

BR

BR

BR

BRB

RB

RB

R

L–Y

BR

B–W

L–Y

L–Y

L–Y

SIL

+BB

2O

X2B

HT2

BO

X1B

HT1

BO

X2A

HT2

AO

X1A

HT1

A

E2

THW

VTA

2V

TAV

CV

PA

VP

A2

VA

F

OX

HT

OX

HT

OX

HT

OX

HT

E1

+BE

1

+BE

1

+BE

1+B

E1

+BTC

32

12

14

31

3

31

C

AA

EE

31

31

31

3

1112

42

42

42

A

42

C

DD

W–G W–G

B–R

B–R

B–R

B–R

BR

R

GR–B

W

GR GR

W

BR

BR

BR

B–R

BR

B–R

BR

B–R

BR

B

R

Y

W

BR

B–R

B–R

B–R

BR

( ∗3)

B–R

B–R

B–R

BR

( ∗3)

B–R

B–R

BR

( ∗3)

B–R

BR

( ∗3)

P

B–R

P–B P–B

J 9JUNCTION CONNECTOR

BR

B–R

B–R

( ∗1)

( ∗1)

(∗ 1)

TC

BR

E

BR

( ∗3)

F

6E

7IE

119

IC3

7IC

3

5E

4E

WFP

CD

I B–R

B–L

GR–R GR

B–L

B–R

IA2

6

10E

15IA

23

II4

1E

7E

12

21

5A

7B

10B

19B

22B

THA

EV

GV

GP

RG

AC

ISB

MB

ATT

MR

ELB–Y

B–Y

V–Y

B–L

B–Y

R–L

GR

W–RBR

B–R

B–R

B–R

B–Y

B–Y

L–Y

B–R

B–R

A11AIR FLOW METER

V 3VSV(EVAP)

V 2VSV(ACIS)

42

3

51

VG

E2G

THA

+BE

2

BB

–Y

CB

–W

EB

–Y

FB

–O

B–R

9E

IGS

WB–O

JIHG

R B–R

W–G

B–L

B–R

B–R

W From CenterAirbag SensorAssembly<20–2>

DP

–B

B–R

G

W–B

HN

W–B

A

B–R

B–R

W–B

E2

VA

F

E 5

D

( ∗2)

(∗ 2)

( ∗2)

(∗ 2) (∗ 2)

∗ 3

: Eur

ope

∗ 2

: G. C

. C.

∗ 1

: Shi

elde

d

OP

–B

(∗ 3)

(∗ 3)

(∗ 3)

D

194

IG–

P–B

P–B

From

Mul

ti–D

ispl

ay<

28–4

>

From

Igni

ter

<3–

3>

( ∗1)

(∗ 3)

(∗ 3)

(∗ 3)

(∗ 3)

(∗ 3)

(∗ 3)

(∗ 3)

(∗ 3)

(∗ 3)

(∗ 3)

(∗ 3)

(∗ 3)

(∗ 3)

(∗ 3)

(∗ 3)

B(∗ 3)

B–Y

B(∗ 3)

BR(∗ 3)

C

2VC

C

EA

27

EA

112

4

VTA

1V

TA2

VC

E2

(∗ 3)

OX

1

VP

A1

VP

A2

VC

E2

(∗ 3)

(∗ 3)

G

25D

WFS

ELG–B

V 1

VA

RIA

BLE

RE

SIS

TOR

9B

B–Y

PS

P

L–Y

P34

PO

WE

R S

TEE

RIN

GO

IL P

RE

SS

UR

E S

EN

SO

R

A

23

L–Y

BR

BR

L–Y

L–Y

1 VO

UT

VC

GN

D

Page 105: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)160

I OVERALL ELECTRICAL WIRING DIAGRAM

910

1112

4 G

S 4

30 /

GS

300

(C

ont'

d)

B C

12

21

23A

22A

10A

NE

+N

E–

G2

L

W

B

L

Y

C 4

CR

AN

KS

HA

FTP

OS

ITIO

N S

EN

SO

R

C 1

CA

MS

HA

FT P

OS

ITIO

NS

EN

SO

R

( ∗1)

( ∗1)

12

21F

23F

20A

19A

8A

7A

30A

TXC

TC

OD

EC

L+C

L–M

+M

–G

E01

34

21

21A

31A

1B

22E

9F

EC

EB

Left

fend

er

E01

E02

E03

EC

EO

MW

B

(∗ 1)

Y–R

G–R

W–B

W–B

W–B

W–B

W–B

W–B

W–B

T 2

THR

OTT

LE C

ON

TRO

L M

OTO

R

C 2

CA

MS

HA

FT T

IMIN

GO

IL C

ON

TRO

L V

ALV

E

18A

17A

W–R

R–W

OC

V+

OC

V–

13E

20E

14E

21E

15E

From ABS & TRC & VSC ECU<18–4>

To ABS & TRC & VSC ECU<18–4>

G–R

L

LG

V

P

TRC

+TR

C–

EN

G+

EN

G–

NE

O

28D

27D

MP

X1

MP

X2

En

gin

e C

on

tro

l a

nd

En

gin

e I

mm

ob

ilise

r S

yste

m (

LH

D 2

JZ–

GE

)

EN

GIN

E A

ND

EC

T E

CU

13D

D6

A25

A13

A12

11A

AC

MG

STP

IGF

IGT3

IGT2

IGT

From A/C COMPRelay<32–2>

From Stop LightSW<8–4>

L–O

EB

110

From

Igni

ter<

3–3>

L–O

G–W

B

B–R

B–L

B–Y

BR

( ∗1)

( ∗1)

A

AAA

AAAA( ∗

1)

( ∗1)

( ∗1)

( ∗1)

A28

A27

1

K 1KNOCK SENSOR 1

K 2KNOCK SENSOR 2

1

Fron

t sid

e of

the

inta

ke m

anifo

ldE

C

B

GR

BR BR

KN

K1

KN

K2

E

BR

( ∗3)

F

D2

STAFrom Neutral

Start SW<3–2>B

See MultiplexCommunicationSystem<1–8>

17BE1 BR(∗ 3)

BR

( ∗3)

29A

LCK

ITo A/C MagneticClutch and LockSensor<32–2>

GR

9A

6A 21

1

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L–B

BR(∗ 3)

ME

01M

OL

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( ∗3)

BR

( ∗3)

E 9ENGINE OIL LEVEL SENSOR

O 2OIL PRESSURE SW

20F

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KS

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V

To Unlock WarningSW<1–3>

To Security Indicator[Rheostat]<1–13>

∗ 3

: Eur

ope

22F

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H

15

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+BG

ND

, E

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F

, E

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BD

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,

BR

( ∗1)

( ∗1)

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Fron

tsi

de o

fth

e in

take

man

ifold

12

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KE

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. C.

∗ 1

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elde

d

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ON

CO

NN

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inta

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12

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A2

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I 8INJECTOR NO. 4

I 5INJECTOR NO. 1

I 6INJECTOR NO. 2

I 7INJECTOR NO. 3

I 9INJECTOR NO. 5

I10INJECTOR NO. 6

B–W

B–W Y

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L

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#10

#20

#30

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AB

–W

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(∗ 3) (∗ 3)

Page 106: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)161

I

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12

34

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( Con

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ext p

age)

1

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25A EFI

120A ALT

15A AM2

11

11

1A1

7. 5A OBD

40A AM1

1H12

1J3

2

AC

C

IG1

IG2

ST2

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14 6

7A

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7IK

1

11

21

35

11

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3

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Und

er th

e A

BS

&TR

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VS

C a

ctua

tor

BK

Qua

rter

pane

l LH

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r flo

orpa

rtitio

n pa

nel L

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E

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owl S

ide

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elR

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W–B

R–L

B

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B–Y

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11

11

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BA

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gin

e C

on

tro

l a

nd

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gin

e I

mm

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m (

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er

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e

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22

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JUN

CTI

ON

CO

NN

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TOR

CHECK ENGINEWARNING LIGHT[COMB. METER]

BAC11 C12,

J39

JUN

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ON

CO

NN

EC

TOR

B–YB

D 2DLC3

J36JUNCTIONCONNECTOR

B–Y

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EB

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TC

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NC

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NC

ON

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Page 107: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)162

I OVERALL ELECTRICAL WIRING DIAGRAM

56

78

5 G

S 4

30 /

GS

300

(C

ont'

d)( C

ont.

nex

t pag

e)

En

gin

e C

on

tro

l a

nd

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gin

e I

mm

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ilise

r S

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m (

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)

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15B

16E

8E

BA

BA

BB

BB

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25F

FA

FA

DB

DB ED

Rea

r si

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inta

ke m

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ld

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11E

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3B

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JUNCTION CONNECTOR

BAJ27 J28,

J34

JUN

CTI

ON

CO

NN

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TOR

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CTI

ON

CO

NN

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TOR

H23HEATED OXYGENSENSOR(Bank 2Sensor 2)

JUNCTION CONNECTOR

BAJ27 J28,

H15HEATED OXYGEN SENSOR(Bank 1 Sensor 2)

H16HEATED OXYGEN SENSOR(Bank 2 Sensor 1)

H14HEATED OXYGEN SENSOR(Bank 1 Sensor 1)

5D

C 3CHECK CONNECTOR

B C

( ∗1)

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,

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31

31

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1112

42

42

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B

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P

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Y

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( ∗1)

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BR

F

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I B–R

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23

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21

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MR

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V 3VSV(EVAP)

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42

3

51

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2

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ter

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UR

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UT

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D

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Page 108: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)163

I

910

1112

5 G

S 4

30 /

GS

300

(C

ont'

d)

B C

12

21

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22A

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ITIO

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Left

fend

er

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(∗ 1)

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From ABS & TRC & VSC ECU<19–4>

To ABS & TRC & VSC ECU<19–4>

G–R

L

LG

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P

TRC

+TR

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28D

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gin

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on

tro

l a

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e I

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ob

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r S

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ter<

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1)

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1

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1

Fron

t sid

e of

the

inta

ke m

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ldE

C

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BR

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BR

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ITo A/C MagneticClutch and LockSensor<32–2>

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9A

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1

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BR

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KS

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To Security Indicator[Rheostat]<2–14>

∗ 1

: Shi

elde

d

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,

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( ∗1)

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ifold

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NS

PO

ND

ER

KE

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,

D

J26

JUN

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ON

CO

NN

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TOR

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1)

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owl s

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l RH

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JUN

CTI

ON

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NN

EC

TOR

J42

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ON

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NN

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TOR

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8B

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PS

ED

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r si

deof

the

inta

kem

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ld

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12

12

12

B–W

12

B–W

B–W

12

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6B

1A

A2

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I 8INJECTOR NO. 4

I 5INJECTOR NO. 1

I 6INJECTOR NO. 2

I 7INJECTOR NO. 3

I 9INJECTOR NO. 5

I10INJECTOR NO. 6

B–W

B–W Y

B

L

R

W

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#10

#20

#30

#40

#50

#60

AB

–W

Page 109: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)164

I OVERALL ELECTRICAL WIRING DIAGRAM

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34

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1K1

1

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1

1

2

AC

C

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ST1

AM

14

43

21

11

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IGN

ITIO

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W

1

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15A H–LP R LWR

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11

1

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17

II4

1E

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EB

Left

fend

erE

EU

nder

the

AB

S &

TR

C &

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ctua

tor

AA

43

21

33

33

8E

B1

12E

B1

3

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3

12

12

3E

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1

7E

B1

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2

15A

7B

EA

Rig

ht fe

nder

12IE

13

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5A ECU–B2

1H4

2F7

BB

CC

BB

IFLe

ft ki

ck p

anel

AAA

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OFF

HIG

H

LOW

HE

AD

FLA

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LIGHTCONTROLSW

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16

148

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CO

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W

9

17

W–B

R

Y–R

R–B

R–B

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J15JUNCTIONCONNECTOR

J11JUNCTIONCONNECTOR

H10HEADLIGHT LH(High)

H12HEADLIGHT RH(High)

B–Y

R–B

R–W

R–Y

W–R

W–B

W–B

W–B

W–B

CH

GH

HF

HI

E

B–Y

R–L

W–L

R–G R–G R–G

R–L

B–L

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R–Y R–Y

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22

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J19

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J14

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J 8

JUN

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/ D

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Ru

nn

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DIM

H–L

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INTB

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ype

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ight

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>

Page 110: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)165

I

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12

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C

C

HEAD LP RELAY

From HeadlightBeam Level ControlECU<15–3>

ED

BFG

LFG

∗1FO

G

J10

JUN

CTI

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35

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Page 111: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)166

I OVERALL ELECTRICAL WIRING DIAGRAM

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21

35

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A121

32

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51

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1

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Page 112: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)167

I

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21

35

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W

G

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51

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A

21

32

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Page 113: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)168

I OVERALL ELECTRICAL WIRING DIAGRAM

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42

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12

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65

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42

C 9CIGARETTE LIGHTERILLUMINATION

21

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36H21HEADLIGHT BEAMLEVEL CONTROL SW

15

S 4SEAT HEATER SW

65

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2013

A16A/C CONTROL ASSEMBLY

62

R 2RADIO AND PLAYER

21

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Page 114: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)169

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E11ECT PATTERN SELECT SW

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62

R 2RADIO AND PLAYER

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W]

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J42

JUN

CTI

ON

CO

NN

EC

TOR

W–B

R–YG–R

TRLY

TAIL

B 6

BO

DY

EC

UN

O. 2

A

W–G

TE

LH

5

13

2

5 1C9 1F

W–G

W–G

W–G

W–G

W–G

13IJ

25 1D

1F13

BB A

W–B

IFLe

ft ki

ck p

anel

229

W–B

W–G

W–G

W–B

C11

CO

MB

INA

TIO

NM

ETE

R

J37

JUN

CTI

ON

CO

NN

EC

TOR

J32

JUN

CTI

ON

CO

NN

EC

TOR

Cow

l sid

e pa

nel R

H

3G2

∗ 3

: Exc

ept A

ustra

lia

5 12

( ∗3)

( ∗2)

( ∗2)

( ∗3)

Page 115: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)170

I OVERALL ELECTRICAL WIRING DIAGRAM

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34

12 G

S 4

30 /

GS

300

1

10A TURN–HAZ

120A ALT

11

40A AM1

1J3

2

AC

C

IG1

AM

14

1J1

10A

GA

UG

E

1H4

23F

B

DA

1IC

3

54

54

6II4

20IJ

2

B–L

LH RH

TLTR

TB

OFF ON

FB

1B

2

W

W

R–L R–L R–L R–LR(∗ 2)G(∗ 1)

R–BR–B

R–B

R–B

BK

Qua

rter

pane

l LH

BJ

Rea

r flo

orpa

rtitio

n pa

nel L

H

11

1

B BA

BA

B

2 22

W–L

B–Y

BA

TTE

RY

JUNCTIONCONNECTOR

BAJ27 J28,

AA

B

A

2

48

56

13

28

710

CC

CC

2H1

2B11

10IC

24

IC2

N 1

BA

CK

–UP

LIG

HT

[NE

UTR

AL

STA

RT

SW

]

J 1(

LHD

)J2

5(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

J18(

LHD

)J3

5(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

R10BACK–UP LIGHT LH[REAR COMB. LIGHT LH]

R12BACK–UP LIGHT RH[REAR COMB. LIGHT RH]

J20(LHD)J43(RHD)JUNCTIONCONNECTOR

IJ27

31

56

56

31

F 6FRONT TURN SIGNALLIGHT RH

R12REAR TURN SIGNAL LIGHTRH[REAR COMB. LIGHT RH]

R10REAR TURN SIGNAL LIGHTLH[REAR COMB. LIGHT LH]

F 5FRONT TURN SIGNALLIGHT LH

W–B

W–B W–B

W–B

W–B

W–B

G–Y

G–Y

G–B

G–B

G–Y

G–Y

G–B1G

51B

111D

10

1H1

3

EA

Rig

ht fe

nder

EB

Left

fend

er

23

4IE

2

3C5

3G5

1C6

2F13

2G6

1F13

IIR

ight

sid

e of

the

cow

l pan

elIF

Left

kick

pan

el

1

AA

7

A

AA

A

AA

I12

IGN

ITIO

N S

W

T 7

TUR

N S

IGN

AL

FLA

SH

ER

J12

JUN

CTI

ON

CO

NN

EC

TOR

J18

JUN

CTI

ON

CO

NN

EC

TOR

J10

JUN

CTI

ON

CO

NN

EC

TOR

J 8

JUN

CTI

ON

CO

NN

EC

TOR

C11

TUR

N S

IGN

AL

IND

ICA

TOR

LIG

HT

[CO

MB

. M

ETE

R]

C13

TUR

N S

IGN

AL

SW

[CO

MB

. S

W]

H20

HA

ZAR

D S

W

R–B

G–Y

G–B

G–B

G–YG–Y

G–Y

R–L

W–B

W–B

W–B

W–B

W–B

W–B

W–B

W–B

W–B

W–B

LHR

H

W–G

W–G

R–W

R–W

W

G–R

G

R–W

W

W–B

W–B

From

Bod

yE

CU

No.

1<

1–15

>

Po

we

r S

ou

rce

Ba

ck–

Up

Lig

ht

Tu

rn S

ign

al

an

d H

aza

rd W

arn

ing

Lig

ht

( LH

D)

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W–B

W–B

A22

1D5

1G6

W–B W–B

IGLR

LLG

ND

+BE

HW

EL

ER

J21(

LHD

)J4

4(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

RA

W–B

BR

122B 12

F 4FRONT SIDE TURNSIGNAL LIGHT RH

G–Y W–B

12

F 3FRONT SIDE TURNSIGNAL LIGHT LH

G–B

1B12

W–B

BR

BAJ 3 J 4, (LHD)

(RHD)

∗ 1

: 3U

Z–FE

∗ 2

: 2JZ

–GE

11K

11A

( LH

D)

( RH

D)

9E

A3

EA

36

( ∗1)

( ∗2)

6E

A1

EA

23

( ∗1)

( ∗2)

(∗ 2) (∗ 2)

R(∗ 1)

Page 116: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)171

I

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12

34

13 G

S 4

30 /

GS

300

1

10A TURN–HAZ

120A ALT

111A

1

40A AM1

1J3

2

AC

C

IG1

AM

14

1J1

10A

GA

UG

E

1H4

6IA

117

ID3

B–L

LH RH

TLTR

TB

OFF ON

FB

1B

2

W

W

R–L

BK

Qua

rter

pane

l LH

BJ

Rea

r flo

orpa

rtitio

npa

nel L

H

11

1

BB

2 22

W–L

B–Y

BA

TTE

RY

AA

3

48

56

8

710

BB

BB

2H1

2E7

4IC

210

IC2

J35

JUN

CTI

ON

CO

NN

EC

TOR

ID38

31

56

56

31

F 5FRONT TURNSIGNAL LIGHT LH

R10REAR TURN SIGNAL LIGHTLH[REAR COMB. LIGHT LH]

R12REAR TURN SIGNAL LIGHTRH[REAR COMB. LIGHT RH]

F 6FRONT TURNSIGNAL LIGHT RH

W–B

W–B

W–B

G–B

G–Y

G–Y

G–B

G–B

G–Y

1G5

1B11

1D10

1H1

2

EB

Left

fend

erE

EU

nder

the

AB

S&

TR

C &

VS

Cac

tuat

or

32

4IJ

2

3C5

3A5

1C6

1F13

IFLe

ftki

ckpa

nel

1

AA

I12

IGN

ITIO

N S

W

TUR

N S

IGN

AL

FLA

SH

ER

J34

JUN

CTI

ON

CO

NN

EC

TOR

J37

JUN

CTI

ON

CO

NN

EC

TOR

C11

TUR

N S

IGN

AL

IND

ICA

TOR

LIG

HT

[CO

MB

. M

ETE

R]

H20

HA

ZAR

D S

W

G–B

G–Y

G–Y

G–BG–B

G–B

R–L

BR

W–B

W–BW–B

W–B

W–B

RH

LH

W–G

W–G

R–W

R–W

W

G–R

G

R–W

W

W–B

From

Bod

yE

CU

No.

1<

2–15

>

Po

we

r S

ou

rce

Tu

rn S

ign

al

an

d H

aza

rd W

arn

ing

Lig

ht

( RH

D)

∗ 1

: Eur

ope

∗ 2

: Aus

tralia

W–B

22

1D5

1G6

W–B

IGLL

LR

+BE

HW

EL

ER

J44

JUN

CTI

ON

CO

NN

EC

TOR

BR

55

5

12

F 3FRONT SIDE TURNSIGNAL LIGHT LH

W–B

B

G–B

G–B

B

G–B

W–B

55

12

F 4FRONT SIDE TURNSIGNAL LIGHT RH

G–Y

1B12

W–B

IIC

owl s

ide

pane

l RH

AA

J42

JUN

CTI

ON

CO

NN

EC

TOR

W–B

AAA

W–B

(∗ 1)

( ∗2)

(∗ 1)

(∗ 2)

1A

3A

2A

7B

8B

6B

55

TURN SIGNAL SW[COMB. SW]

BAC13 ,

( ∗1)

( ∗2)

J29JUNCTIONCONNECTOR

AJ3

2JU

NC

TIO

NC

ON

NE

CTO

R

7

5

GN

D

W–B

Page 117: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)172

I OVERALL ELECTRICAL WIRING DIAGRAM

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12

34

14 G

S 4

30 /

GS

300

CB

DA

( LH

D)

( RH

D)

CB

DA

( LH

D)

( RH

D)

1G3

2F10

2A 1

1

13IC

3

31

31

BK

A

21

35

55

55

21

35

34

II

AAA

B–R(LHD)W–L(RHD)

R–B

G

B

G–O(LHD)

G–Y(LHD)

G–O(RHD)

G–Y(RHD)

R–W

GG

W–L

( RH

D)

R–B

G–O

( RH

D)

G–Y

( LH

D)

1625

B–L

G–O W–B

G–O W–B W–B

W–B(RHD)

W–B(RHD)

G–O

W–B

W

11

22

G–O

G(LHD)

B–R(LHD)

( RH

D)

10A RR FOG

10A TAIL

TAIL RELAYJUNCTIONCONNECTOR

BAJ15 J41,

R 5REAR FOGLIGHT RELAY

REAR FOGLIGHT RELAY

B 6BODYECU NO. 2

40A MAIN

120A ALT

BA

TTE

RY

R 9REAR FOG LIGHT LH[REAR COMB. LIGHT LH]

R11REAR FOG LIGHT RH[REAR COMB. LIGHT RH]

J37JUNCTIONCONNECTOR

J42JUNCTIONCONNECTOR

J21(

LHD

)J4

4(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

R 6REAR FOGLIGHT SW

Re

ar

Fo

g L

igh

tP

ow

er

So

urc

e

1H2

See Illumination System<10–1><11–1>

IF

ABB

BB AA

II24IK

312

EB

EE

EA

1

R–Y

1

10IA

1

1IA

1 R–Y

R–Y

Y (LHD)R–Y(RHD)

Y( L

HD

)R

( RH

D)

21

R–Y

R–Y

Y(LHD)R(RHD)

W–B(LHD)

W–B(LHD)

W–B

W–B

W–B

( LH

D)

R–B

ER

H+

LH+

SIG

NA

LG

ND

25

42

1

13

BS

OU

RC

E

W–B(RHD)

(LHD)W–B

W–B(RHD)

W–B(LHD)

21

3

SIG

NA

LG

ND

SO

UR

CE

J11(

LHD

)J3

3(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

15AH–LP L LWR

W–B(RHD)

W–B(RHD)

J10JUNCTIONCONNECTOR

J37JUNCTIONCONNECTOR

( LH

D)

( RH

D)

H21

HE

AD

LIG

HT

BE

AM

LEV

EL

CO

NTR

OL

SW

H 1

HE

AD

LIG

HT

BE

AM

LEV

EL

CO

NTR

OL

AC

TUA

TOR

LH

R–W

R–W

R–W

He

ad

ligh

t B

ea

m L

eve

l C

on

tro

l ( M

an

ua

l)

( LH

D)

( RH

D)

AA

H 2

HE

AD

LIG

HT

BE

AM

LE

VE

LC

ON

TRO

LA

CTU

ATO

R R

H

J29

JUN

CTI

ON

CO

NN

EC

TOR

43

21

11

1

1

See Headlight System<6–1><7–1>

Qua

rter

pane

lLH

Cow

lsi

depa

nel R

H

Left

kick

pane

lLe

ft fe

nder

Rig

htfe

nder

Und

er th

eA

BS

& T

RC

&V

SC

act

uato

r

HE

AD

LP

RE

LAY

J 8(LHD)J32(RHD)JUNCTIONCONNECTOR

RFG

O

RFO

G

J14JUNCTIONCONNECTOR

B

W–B

( LH

D)

AA

A

3 5

2 1

11H

11A

( LH

D)

( RH

D)

Page 118: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)173

I

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23

4

15 G

S 4

30 /

GS

300 2

AC

C

IG1

AM

14

1J3

40A AM1

11

30A H–LP CLN

120A ALT

1

1J1

15A

EC

U–I

G10

AG

AU

GE

20A

WA

SH

ER

1H5

1D4

1F3

BB

3A

8B

1A

8IK

317

IK3

9IK

318

IK3

IK3

8A

RH

1

7A

RH

2

6A

RH

3

5A

RH

4

1BSB

F

2B

SH

F

3B

SG

F

5B

SB

R

6B

SH

R

7B

SG

R

2IC

310

IC3

11IC

3

C11

HE

AD

LIG

HT

BE

AM

LEV

EL

CO

NTR

OL

WA

RN

ING

LIG

HT

[CO

MB

. M

ETE

R]

2A

4B

4A EB

Left

fend

er

AA

21 M

B–Y

B–R

L

L–O

W–L

L

W

L

B–R

R–L B–L B–L

B–R B–R

B–R

B–R

R–W

P–G

G–O

R–B

B–R

R–W

P–G

G–O

R–B

G–Y

L–Y

L–W

L–B

G–B

L–O

W–B

L–B

G–B

L–O

W–B

W–B

W–B

R–GL–B

B

W–B

L–O

L

L–O

L

From ABS & TRC& VSC ECU<18–4><19–4>

R–G

L–Y

L

EM

TRH

1 11

54

16

31

24

32

1

222

SH

BS

HFL

SH

GS

HB

SH

RL

SH

G

IGP

B

Po

we

r S

ou

rce

H 6

HE

AD

LIG

HT

CLE

AN

ER

CO

NTR

OL

RE

LAY

J 7JUNCTIONCONNECTOR

I12

IGN

ITIO

N S

W

H 5

HE

AD

LIG

HT

BE

AM

LE

VE

LC

ON

TRO

L M

OTO

R

H17

HE

IGH

T C

ON

TRO

L S

EN

SO

R( F

ront

)

H24

HE

IGH

T C

ON

TRO

L S

EN

SO

R( R

ear)

H 7HEADLIGHT CLEANERMOTOR

H 3

H 4

,

HE

AD

LIG

HT

BE

AM

LE

VE

LC

ON

TRO

L E

CU

AB

BA

TTE

RY

B–L

32

451

1 18

9IA

1

IA1

6( L

HD

)

( RH

D)

4B

( RH

D)

4A

( LH

D)

2A

( LH

D)

1B

( RH

D)

To D

aytim

e R

unni

ngLi

ght R

elay

(∗1

) <6–

2>To

Bod

y E

CU

No.

2( ∗

2)<

7–2>

7

II23

II22

II211

II21

II210

( LH

D)

( RH

D)

3IJ

2

IE2

3( L

HD

)

( RH

D)

(LHD) (LHD)

B–R

( RH

D)

E

J41

JUN

CTI

ON

CO

NN

EC

TOR

CE CJ3

1JU

NC

TIO

NC

ON

NE

CTO

R

B–R(RHD)

B–R(RHD)

B–R

E1

HD

LPS

PD

LW

NG

LHB

1IG

To D

aytim

e R

unni

ngLi

ght R

elay

( ∗1)

<6–

1>To

Bod

y E

CU

No.

2( ∗

2)<

7–2>

HEADLIGHT CLEANER SW

BAH22 ,

J12(

LHD

)J3

5(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R2LH

B1

3LH4

6LH3

1LH2

4LH1

HE

AD

LIG

HT

BE

AM

LE

VE

LC

ON

TRO

L M

OTO

R

He

ad

ligh

t C

lea

ne

rH

ea

dlig

ht

Be

am

Le

vel

Co

ntr

ol

( Au

tom

atic

)

∗ 1

: w/ D

aytim

e R

unni

ng L

ight

∗ 2

: w/o

Day

time

Run

ning

Lig

ht

11K

11A

( LH

D)

( RH

D)

W–B

W–B

( LH

D)

W–B

( RH

D)

Page 119: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)174

I OVERALL ELECTRICAL WIRING DIAGRAM

��������������������������������������������������

�������������������������������������������������������

12

34

16 G

S 4

30 /

GS

300

( Con

t. n

ext p

age)

120A ALT

15A AM2

25A EFI

1

11

1

40A AM1

1J3

2

AC

C

IG1

IG2

ST2

AM

14 6

7A

M2

12 22

11

21

35

11

11

EE

Und

er th

e A

BS

&TR

C &

VS

C a

ctua

tor10

E1

E9

E1J6

5A IGN

1G7

4C

10C

5C

11C

22B

14B

15B

16B

2B

23B

21

E

AA

E1

2

16E

8E

B–Y

BA

BA

BB

1C 6

C2 12

C3

5

C6 11

C7

4

13C

10

C8

39

14C

C9

28

15C

17B

9F

22E

1B

31A

21A

EB

Left

fend

erE

CFr

ont s

ide

ofth

e in

take

man

ifold

ED

Rea

r si

de o

f the

inta

ke m

anifo

ld

AA

C17

17

18B

BA

TTE

RY

I12

IGN

ITIO

N S

W

J16(

LHD

)J3

9(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

J15(

LHD

)J3

6(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

J14(

LHD

)J3

4(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

E 1

EC

T S

OLE

NO

ID

B–Y

B–Y

B–Y

B–O B–O

B–Y

B–Y

B–R

W–B

B–R

B–R

B–R

L

G–Y

Y–G

Y

G–W

L–R

P

L–B

G–B

R–B

G–R

BR

BR

W–B

W–B

W–B

W–B

W–B W–B

BR

BR

B–R

W–B

B–Y

B–Y

W–R

W

W–R

W–L

W–L

B–WB–Y

B–W

B–Y

R

G

L–Y

R–L

O 1O/D DIRECT CLUTCHSPEED SENSOR

S 1SPEED SENSOR(ECT)

EFI RELAYJUNCTIONCONNECTOR

BAJ 3 J 4,

MR

EL

BA

TTIG

SW

NC

O+

NC

O–

SP

2+S

P2–

THA

THW

VP

AV

PA

2V

CV

TA

+BB

2S

1S

2S

3S

4S

LU+

SLU

–S

LN+

SLN

–S

LT+

SLT

–O

ILE

2E

1E

01E

02E

03E

CE

OM

E 2

E 3

, E

NG

INE

AN

D E

CT

EC

UA

BE

4,

CE

5,

DE

6,

EE

7,

F

24B

VTA

2

5D TC

2D STA

6D STP

See

Eng

ine

Con

trol

and

Eng

ine

Imm

obilis

er S

yste

m<

4–6>

<4–

7><

4–8>

<4–

9><

4–10

><

5–6>

<5–

7><

5–8>

<5–

9><

5–10

>

A

Po

we

r S

ou

rce

EC

T a

nd

A/T

In

dic

ato

r ( 2

JZ–

GE

)

B–L

R

W

B

Y

V

LG

BR

L

G

GR

O

O

2 1

AA

J 5(LHD)J29(RHD)JUNCTION CONNECTOR

15IA

2

IA2

15

3IA

1

II43

( LH

D)

( RH

D)

7IK

1

IA1

9( L

HD

)

( RH

D)

3IA

3

II11

( LH

D)

( RH

D)

(∗ 2)

AA

J 2JUNCTIONCONNECTOR

(∗ 1)

BR

BR(∗ 1)

(∗ 2)

(∗ 2)

∗ 1

: G. C

. C.

∗ 2

: Exc

ept G

. C. C

.

BAJ27 J28,

(LHD)

(RHD)

S1

S2

S3

S4

SLU

+S

LU–

SLN

+S

LN–

SLT

+S

LT–

OIL

E2

(∗ 2)

11K

11A

( LH

D)

( RH

D)

Page 120: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)175

I

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56

78

16 G

S 4

30 /

GS

300

(C

ont'

d)

A

12

57

48

3

PL

RL

NL

DL

2LLL

2E

A2

6E

A1

3E

A3

16D

26D

13B

17D

20B

21B

9E

A3

28D

23A

24A

2211J1

10A

GA

UG

E

1D4

1H4

D

B

71

D

B

E 2

E 3

,

EN

GIN

E A

ND

EC

T E

CU

AB

R–B

R–W

G–R

Y–B

G–B

Y–B

R–W

R

G–R

Y–B

G (LHD)G–R(RHD)

G–B

R–L R–L

R–L

R–L

W G–W

G–R

R–L

R–L

B–Y

B–Y

MP

X1

PW

RS

NO

W

E11

EC

T P

ATT

ER

NS

ELE

CT

SW

C,

E 4

D

,

E 5

E,

E 6

F,

E 7

RP

ND

32

1D5

1F13

II

AAJ1

8JU

NC

TIO

NC

ON

NE

CTO

R

W–B W–B W–B

ECT SNOW

ECT PWR

L

2

3

4

D

N

R

A/T P

C11

CO

MB

INA

TIO

N M

ETE

R

J 1(

LHD

)J2

5(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

RN

1A

/T IN

DIC

ATO

R L

IGH

T S

W[N

EU

TRA

L S

TAR

T S

W]

EC

T a

nd

A/T

In

dic

ato

r ( 2

JZ–

GE

)

W–B

BB

R–L

J18(

LHD

)J3

5(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

RE A E A

E BY

–B

DG

–B

Y–B

R–Y

R–Y

G–B

Y–G

To Shift Lock Control ECU<28–2>4LG–B

C

SNOW

PWR19A

W–B

A

MP

X2

27D

A A D A A A D AF BC B

To ABS & TRC &VSC ECU<18–5><19–5>

R–W

R–B

R–W R–B

R–W R–B

J27

J28

,

JUN

CTI

ON

CO

NN

EC

TOR

AB

MP

X1

∗ 1

: G. C

. C.

∗ 2

: Exc

ept G

. C. C

.

61G A

J 8(

LHD

)J4

2(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

W–B

IF :

Left

kick

pan

el( L

HD

)II

: Cow

l sid

e pa

nel R

H( R

HD

)

EA

47

10 EA

2

14 A 7 D

EA

49

3E

A2

( ∗1)

( ∗2)

( ∗2)

( ∗1)

IFLe

ft ki

ck p

anel

3

( LH

D)

W–B

( RH

D)

J32

JUN

CTI

ON

CO

NN

EC

TOR

J37

JUN

CTI

ON

CO

NN

EC

TOR

B

B AA

W–B

( RH

D)

( LH

D)

(LHD) (LHD)

W–B(RHD)

W–B

( RH

D)

J 3

J 4

, A

B( L

HD

)

( RH

D)

BAJ 3 J 4,

JUNCTION CONNECTOR

BAJ27 J28,

J 1(

LHD

)J2

5(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

5

( ∗2)

( ∗1)

(∗ 2)

See MultiplexCommunicationSystem<1–8><2–8>

15DKD IF

Left

kick

pane

lII

AAAA

A

A

Y–R(∗ 3)

W–B(LHD)

W–B(LHD)

W–B(RHD)

W–B

( RH

D)

K 3

KIC

K D

OW

N S

W

J10

JUN

CTI

ON

CO

NN

EC

TOR

J 8

JUN

CTI

ON

CO

NN

EC

TOR

J37

JUN

CTI

ON

CO

NN

EC

TOR

J42

JUN

CTI

ON

CO

NN

EC

TOR

(LHD)

(RHD)

12

Rig

ht s

ide

ofth

e co

wl p

anel

R–BTo NavigationECU<28–4>

B 5

BO

DY

EC

U N

O. 1

A

Cow

l sid

epa

nel R

H

4D

L–Y

4II1ID

16

L–Y

2 C15

A/T

SH

IFT

MA

IN S

W[C

OM

B. S

W]14

R–G

D

5II1ID

17

R–G

1

( LH

D)

( RH

D)

R–B

Page 121: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)176

I OVERALL ELECTRICAL WIRING DIAGRAM

���������������������������������������������

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12

34

17 G

S 4

30 /

GS

300

1

120A ALT

15A AM2

25A EFI

11

1

40A AM1

1J3

2

AC

C

IG1

IG2

ST2

AM

14 6

7A

M2

1J1

1J6

10A

GA

UG

E

1D4

1D5

1F13

IIR

ight

sid

eof

the

cow

l pan

el

5A IGN

1G7

11

21

35

11

10E

1E

9E

11D43

16E

8E

BA

BA

BB

21A

31A

1B

9A

17B

EC

Fron

t sid

e of

the

inta

ke m

anifo

ldE

DR

ear

side

of t

hein

take

man

ifold

7E

A3

23D

JUNCTION CONNECTOR

BAJ 3 J 4,

22E

9F EB

20A

19A

8A

7A

30A

27D

24B

23B

2B

16B

15B

18B

J18

JUN

CTI

ON

CO

NN

EC

TOR

J 4(LHD)J28(RHD)JUNCTION CONNECTOR

C15

CR

UIS

E C

ON

TRO

L S

W[C

OM

B.

SW

]

J14(

LHD

)J3

4(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

BA

TTE

RY

J16(

LHD

)J3

9(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

J15(

LHD

)J3

6(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

I12

IGN

ITIO

N S

W

S12STOP LIGHT SW

C11CRUISE CONTROL INDICATORLIGHT[COMB. METER]

EFI RELAY

2 1 11

1

E

D

A22

AA

22

2

E

AA

1 A5

4

D

E

B–LW

W–R

B–Y

B–Y

B–R

B–R

B–R

B–R

B–R

W–B

W–B

W–B

BR

BR BR

BR

BR

BR

R–YR–Y

W–B

W–B W–B

W–BW–BW–BR–LB–Y

B–O

B–L

B–O

B–Y

B–Y

B–Y

B–Y

B–Y

B–W

B–W

B–Y

B–O

BR

BR

BR

W–R

W–L

MR

EL

BA

TTIG

SW

ST1

–E

2V

PA

VP

A2

VC

VTA

VTA

2G

E01

M–

M+

CL–

CL+

+BB

2E

01E

02E

03M

E01

E1

CC

SE

CE

OM

See

Eng

ine

Con

trol S

yste

m<

4–6>

<4–

7><

4–9>

<5–

6><

5–7>

<5–

9>S

ee E

ngin

e C

ontro

l Sys

tem

<4–

11>

<5–

11>

17DD See ECT and A/T Indicator

System<16–6>

E 6

E 7

, E

NG

INE

AN

D E

CT

EC

UE

FE

2E

3,

AB

Po

we

r S

ou

rce

Cru

ise

Co

ntr

ol

( 2JZ

–G

E) 28

D

See MultiplexCommunicationSystem<1–8><2–8>

MP

X1

MP

X2

Left

fend

er

CR

UIS

E

RE

S/A

CC

SE

T/C

OA

ST

CA

NC

EL

E 5

, D

,

J 5(

LHD

)J2

9(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

RAA

∗ 1

: G. C

. C.

∗ 2

: Exc

ept G

. C. C

.

(LHD) (LHD)

J37

JUN

CTI

ON

CO

NN

EC

TOR

BB

W–B(RHD)

IFLe

ftki

ckpa

nel

AJ3

2JU

NC

TIO

NC

ON

NE

CTO

R

W–B(RHD)

6D STP

3IA

1

II43

15IA

2

IA2

15( L

HD

)

( RH

D)

7IK

1

IA1

9( L

HD

)

( RH

D)

Und

er th

e A

BS

& T

RC

&V

SC

act

uato

r

EEW–BW–B

3IA

3

II11

( LH

D)

( RH

D)

2II1ID

19

1II1ID

18

E AA B

E AA B

( LH

D)

( RH

D)

J 9

J36

,

JUN

CTI

ON

CO

NN

EC

TOR

AB

J 2

JUN

CTI

ON

CO

NN

EC

TOR

AABR(∗ 1)

(∗ 2)

( ∗2)

BR(∗ 1)

BR

( ∗1)

A

(∗ 2)

(∗ 2)

BR

( ∗1)

EC

CC

CS

BAJ27 J28,

(LHD)

(RHD)

( LH

D)

( RH

D)

11K

11A

( LH

D)

( RH

D)

(∗ 2)

Page 122: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)177

I

������������������������������������

������������������������������������

12

34

18 G

S 4

30 /

GS

300

( Con

t. n

ext p

age)

1

60A ABS NO. 1 120A ALT

11J3

11

1K1

1

15A AM2

40A ABS NO. 2

9IA

1

2 7

AC

C

IG1

IG2

ST2

AM

14 6

AM

2 I12

IGN

ITIO

N S

W

AA

2 22

43

21

22

22

ABS MOTOR RELAY

43

21

22

22

TRAC MOTOR RELAY

A

31

64

2

22

2

22

2

5

3D

1A

19A

2D

29A

27A

21A

7A

16D

8D

7D

1D

8A

9A

2A

3A

4A

5A

6D

11A

9D

28A

18A

2C

3B

7B

8A

7A

10A

9A

4A

3A

2A

1A

12A

11A

5A

6A

1B

3C

4B

5B

8B

ABS SOL RELAY

2B

6B

4C

1C EE

Und

er th

e A

BS

& T

RC

& V

SC

act

uato

rE

AR

ight

fend

erE

EU

nder

the

AB

S &

TR

C &

VS

C a

ctua

tor

AA

IA22

EA

111

C

VS

C (

LH

D)

Po

we

r S

ou

rce

A 5

A 6

,

AB

S &

TR

C &

VS

C A

CTU

ATO

R

AB

J 5

JUN

CTI

ON

CO

NN

EC

TOR

A 7

, C

A22

A23

,

AB

S &

TR

C &

VS

C E

CU

AB

A24

, C

A25

, D

W–L

W–R

B–Y

B–W

R–B

W–B

B–Y

B–R

W–R

W

R

B–W LG–B

LG–B

R–B

LG–R

R

GR

LG–B

R–B R

G–O

L

V–R

W–B

R–B

O

V–R

G–O L BR

R–B

W–B

W–B

R–B

W–R

G–B

W–L

W–G

L–B

L–Y

Y

Y–G

R–G

R–L

R–W

GR–B

Y–R

B–W

GR–L

GR–G

GR–R

GR

O

R

A

2 22

2

2

11

11

1

A

J16

JUN

CTI

ON

CO

NN

EC

TOR

A

B–L

BA

TTE

RY

LG–B

LG–R

40A AM1

IA12 IA25

LG–B

LG–R

LG–B

5C

W–B11

IA2

14IA

2

3IA

1

4IA

2 R–B

G–O

W–B

13IA

2

4IA

1

1IA

2

12IA

2

3IA

2

Y–R

B–W

GR–L

GR–G

GR–R

BG

R( ∗

2)

1J6

5A IGN

1G7

EE 1C

J15JUNCTIONCONNECTOR

18B

1B

2B

9B

10B

7B

14B

22B

24B

16B

From Engine andECT ECU<4–11><4–12><35–11>

31

52

B–O B–O

B

W

R

G

(Shielded)

G–R

LG

L

P

V

A26

AB

S D

EC

ELE

RA

TIO

NS

EN

SO

R

To Engine andECT ECU<4–11><35–10>

3C

L–YTo Headlight BeamLevel Control ECU<15–3>

VG

SG

L1G

L2G

GN

D

B–W

R2+

R1+

IG2

GS

SV

GS

GL1

GL2

GG

ND

FLO

NE

OE

NG

+E

NG

–TR

C+

TRC

SR

MR

2M

R1

MTT

SFL

HS

FLR

SFR

HS

FRR

SR

LHS

RLR

SR

RH

SR

RR

SA

1S

A2

SA

3S

TRA

ST

PH

PL

MT+

MT–

GR

GR

( ∗1)

AG

R( ∗

1)

( ∗2)

( ∗2)

∗ 1

: 3U

Z–FE

∗ 2

: 2JZ

–GE

Page 123: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)178

I OVERALL ELECTRICAL WIRING DIAGRAM

56

78

18 G

S 4

30 /

GS

300

(C

ont'

d)

VS

C (

LH

D)

C

24A

23A

22A

10A

19C

17C

28C

27C

9C

6B

20C

B

12 BUZZER

13A

14A

21A 9ABS SPEED SENSORFRONT RH

19B

20B

21

A34ABS SPEED SENSORREAR LH

11B

12B

21

A35ABS SPEED SENSORREAR RH

6A

31A

IFLe

ft ki

ck p

anel

IIR

ight

sid

e of

the

cow

l pan

el

26C 12

15C

24C

7C

18C

8C

32

1

41

35

BB

21

63

B–Y

B–R

W

R

B

(Shielded)

GR–L

R

W

B

(Shielded)

B–R

W–R

B–R

B–R

B–R

L

LG

G–W

R–W

R–B

Y

W–B

W–B

O

L–W

BR–W

BR

G–W

BR BR

G–W

BR

BR–W

L–W

O

W–B

W–B

V 5VSC WARNING BUZZER

M 1

MA

STE

R C

YLI

ND

ER

PR

ES

SU

RE

SE

NS

OR

Y 1

YA

W R

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OR

J 7

JUN

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ON

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NN

EC

TOR

V 4VSC OFF SW

A22

A23

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AB

S &

TR

C &

VS

C E

CU

AB

A24

, C

A25

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From Stop Light SW<8–4>

BB

J16JUNCTIONCONNECTOR

AJ1

0JU

NC

TIO

NC

ON

NE

CTO

R

17B

8B

AAA

A

W–B

W–B

W–B

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8JU

NC

TIO

NC

ON

NE

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12IL

34

IL3

15IC

16

IC1

8II2

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J18

JUN

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ON

CO

NN

EC

TOR

AW

–BA

YD

YA

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16A

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12

P

L

12E

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110

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J 9JUNCTIONCONNECTOR

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in)

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R

C14STEERING SENSOR[COMB. SW]

2IE

114

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16

IE1

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13

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5B

16C

6C

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V–R

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L

L

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D E F G H

A 8ABS SPEED SENSORFRONT LH

5E

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B–WB–WB–W

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BG

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2)

TCTS

WA

WB

( Con

t. n

ext p

age)

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From A/T Indicator Light SW[Neutral Start SW]<16–5><36–5>

FSS

E2

PM

CV

CM

FL+

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1B

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T

23

CC

J 9JUNCTIONCONNECTOR

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25

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W–G

B–W(∗ 2)

P–B(∗ 2)

D

1314

7

LG–B

D 2

DLC

3

TCTS

SIL

VC

MP

MC

E2

AG

R( ∗

1)G

R( ∗

1)

(∗ 2)

J15

JUN

CTI

ON

CO

NN

EC

TOR

9IE

2

D

P–B

From

Mul

ti–D

ispl

ay<

28–4

> P–B

(∗ 2) (∗ 2)

P–B(∗ 1)

B–W(∗ 1)

LG–B(∗ 1)

(∗ 2) (∗ 2)

(∗ 2)(∗ 2)

∗ 1

: 3U

Z–FE

∗ 2

: 2JZ

–GE

AB

–Y

BB

–RB

(∗ 2)

Page 124: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)179

I

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910

1112

18 G

S 4

30 /

GS

300

(C

ont'

d)

22A

8B

1D5

1G6

1F13

IFLe

ft ki

ck p

anel

IIR

ight

sid

e of

the

cow

l pan

el

11IE

1

ABS

VSC OFF

VSC

SLIP

SPEEDOMETER

BRAKE

CP

U

AA

AA

W–BW–B

W–BO

W–B W–B

J 8

JUN

CTI

ON

CO

NN

EC

TOR

J18JUNCTION CONNECTOR

16B

15B

13B

14B

5B

17B

1A

HGFEDCP G R L L O

R–L

O

L

L

R

G

P

C11

C12

,

CO

MB

INA

TIO

N M

ETE

R

AB

VS

C (

LH

D)

O

W–B

A B

1J1

10A GAUGE

1D4

15A ECU–IG

1H5

B–Y

B–R

B–Y

B–R

R–L

Page 125: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)180

I OVERALL ELECTRICAL WIRING DIAGRAM

������������������������������������

����������������������������������������

12

34

19 G

S 4

30 /

GS

300

( Con

t. n

ext p

age)

1

60A ABS NO. 1 120A ALT

11J3

11

1A1

1

15A AM2

40A ABS NO. 2

7IK

1

2 7

AC

C

IG1

IG2

ST2

AM

14 6

AM

2 I12

IGN

ITIO

N S

W

AA

2 22

43

21

22

22

ABS MOTOR RELAY

43

21

22

22

TRAC MOTOR RELAY

A

31

64

2

22

2

22

2

5

3D

1A

19A

2D

29A

27A

21A

7A

16D

8D

7D

1D

8A

9A

2A

3A

4A

5A

6D

11A

9D

28A

18A

2C

3B

7B

8A

7A

10A

9A

4A

3A

2A

1A

12A

11A

5A

6A

1B

3C

4B

5B

8B

ABS SOL RELAY

2B

6B

4C

1C

Rig

ht fe

nder

EE

Und

er th

e A

BS

& T

RC

&V

SC

act

uato

rE

EU

nder

the

AB

S &

TR

C &

VS

C a

ctua

tor

AA

IK3

13E

A1

11

C

VS

C (

RH

D)

Po

we

r S

ou

rce

A 5

A 6

,

AB

S &

TR

C &

VS

C A

CTU

ATO

R

AB

J29

JUN

CTI

ON

CO

NN

EC

TOR

A 7

, C

A22

A23

,

AB

S &

TR

C &

VS

C E

CU

AB

A24

, C

A25

, D

W–L

W–R

B–Y

B–W

R–B

W–B

B–Y

B–R

W–R

W

R

B–W LG–B

LG–B

R–B

G–Y

R

GR

LG–B

R–B R

G–O

L

G–O

W–B

R–B(∗ 1) B (∗ 2)

G–O

LW–B(∗ 1)BR (∗ 2)

R–B(∗ 1) B (∗ 2)

W–B(∗ 1)BR (∗ 2)

W–B

R–B

W–R

G–O(∗ 1) G (∗ 2)

W–L

W–G

L–B

L–Y

Y

Y–G

R–G(∗ 1)R–Y(∗ 2)

R–L

R–W

GR–B(∗ 1)B–L (∗ 2)

Y–R

B–W

GR–L(∗ 1) LG (∗ 2)

L–Y

GR

GR

O

R

A

2 22

2

2

11

11

1

A

J39

JUN

CTI

ON

CO

NN

EC

TOR

A

B–L

BA

TTE

RY

LG–B

G–Y

40A AM1

LG–B

G–Y

LG–B

G–O

W–B

BG

R( ∗

3)

1J6

5A IGN

1G7

EE 1C

J36JUNCTIONCONNECTOR

18B

1B

2B

9B

10B

7B

14B

22B

24B

16B

From Engine andECT ECU<5–11><5–12><35–11>

31

52

B–O B–O

B

W

R

G

(Shielded)

G–R

LG

L

P

V

A26

AB

S D

EC

ELE

RA

TIO

NS

EN

SO

R

To Engine andECT ECU<5–11> <35–10>

3C

L–YTo Headlight BeamLevel Control ECU<15–3>

VG

SG

L1G

L2G

GN

D

B–W

R2+

R1+

IG2

GS

SV

GS

GL1

GL2

GG

ND

FLO

NE

OE

NG

+E

NG

–TR

C+

TRC

SR

MR

2M

R1

MTT

SFL

HS

FLR

SFR

HS

FRR

SR

LHS

RLR

SR

RH

SR

RR

SA

1S

A2

SA

3S

TRA

ST

PH

PL

MT+

MT–

∗ 1

: Aus

tralia

∗ 2

: Eur

ope

EA

5C

W–B

GR

GR

( 3U

Z–FE

)A

( ∗3)

∗ 3

: 2JZ

–GE

( ∗3)

Page 126: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)181

I

��������������������������������������������������������������������������������5

67

8

19 G

S 4

30 /

GS

300

(C

ont'

d)

VS

C (

RH

D)

C

1J1

10A GAUGE

1D4

15A ECU–IG

1H5

24A

23A

22A

10A

19C

17C

28C

27C

9C

6B

20C

E

E

12 BUZZER

13A

14A

12A 9ABS SPEED SENSORFRONT RH

19B

20B

21

A34ABS SPEED SENSORREAR LH

11B

12B

21

A35ABS SPEED SENSORREAR RH

6A

31A

EE

Und

er th

e A

BS

& T

RC

& V

SC

actu

ator

IIC

owl s

ide

pane

l RH

26C 12

15C

24C

7C

18C

8C

32

1

41

35

E

21

63

B–Y

B–R

B–R

B–R

W

R

B

(Shielded)

GR–L

R

W

B

(Shielded)

B–R

W–R

B–R

B–R

B–R

L

LG

G–W

R–W

R–B

Y

W–B

W–B

O

L–W

BR–W

BR

P

V

BR

BR–W

L–W

O

W–B

V 5VSC WARNINGBUZZER

M 1

MA

STE

R C

YLI

ND

ER

PR

ES

SU

RE

SE

NS

OR

Y 1

YA

W R

ATE

SE

NS

OR

J41

JUN

CTI

ON

CO

NN

EC

TOR

V 4VSC OFF SW

A22

A23

,

AB

S &

TR

C &

VS

C E

CU

AB

A24

, C

A25

, D

From Stop Light SW<9–4>

AJ4

2JU

NC

TIO

NC

ON

NE

CTO

R

17B

8B

W–B

W–B

W–B

12IM

34

IM3

15IC

16

IC1

YD

YA

W2

GY

AW

VY

S

16A

15A

12

P

L

12E

A1

EA

110

P

1122

D

5C

B

J31JUNCTIONCONNECTOR

B

LG–BLG–B

P–B

LG–B

( Sho

rt P

in)

3B

DB

P–B

C14STEERING SENSOR[COMB. SW]

2IJ

114

IJ1

5IJ

16

IJ1

4IJ

13

IJ1

5B

16C

6C

4C

13C

R–G

V

V–R

L–O

LG–R

LG–B

O

L

L

R

G

P

B C D E F G

A 8ABS SPEED SENSORFRONT LH

J36

JUN

CTI

ON

CO

NN

EC

TOR

5E

A1

16 4B

B–WB–WG–W

A

R–L

BG

R( ∗

3)

TCTS

WA

( Con

t. n

ext p

age)

LG–B

P G R L L O R–L

From A/T Indicator Light SW[Neutral Start SW]<16–5><36–5>FS

SE

2P

MC

VC

MFL

+FL

–Y

DY

SS

YA

WG

YA

WV

YS

IG1

BZ

TCTS

WA

GN

D3

GN

D4

CS

WR

PS

TPG

ND

2G

ND

1S

S1–

SS

1+FR

–FR

+R

L+R

L–R

R+

RR

–B

RL

SP

1IN

DV

SC

WW

T

5IK

314

IK3 L

LG

25C

C 3

CH

EC

KC

ON

NE

CTO

R

CC

DD

713

14

W–G

P–B

P–B

C

D

D 2

DLC

3

GR

23

D/G

A

IFLe

ft ki

ckpa

nel

AJ3

2JU

NC

TIO

NC

ON

NE

CTO

R

EA

Rig

htfe

nder

IIC

owl s

ide

pane

l RH

EW

B

P–B

B–W

SIL

TCTS

VC

MP

MC

E2

AG

R( 3

UZ–

FE)

GR

( 3U

Z–FE

)

J36

JUN

CTI

ON

CO

NN

EC

TOR

LG–B

P–B

B–W

(3UZ–FE)

(3UZ–FE)

(3UZ–FE)

(∗ 3)

(∗ 3)

(∗ 3)

∗ 3

: 2JZ

–GE

J42

JUN

CTI

ON

CO

NN

EC

TOR

( ∗3)

(∗ 3)

(∗ 3)

(∗ 3)

Page 127: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)182

I OVERALL ELECTRICAL WIRING DIAGRAM

������������������������������������������

910

1112

19 G

S 4

30 /

GS

300

(C

ont'

d)

22A

8B

1D5

1G6

1F13

IIC

owl s

ide

pane

l RH

IFLe

ft ki

ck p

anel

11IJ

1

ABS

VSC OFF

VSC

SLIP

SPEEDOMETER

BRAKE

CP

U

BB

AA

W–BW–B

W–BO

W–B W–B

J42

JUN

CTI

ON

CO

NN

EC

TOR

J37JUNCTION CONNECTOR

16B

15B

13B

14B

5B

17B

1A

GFEDCBAP G R L L O R–L

R–L

O

L

L

R

G

P

C11

C12

,

CO

MB

INA

TIO

N M

ETE

R

AB

VS

C (

RH

D)

AJ3

2JU

NC

TIO

NC

ON

NE

CTO

R

Page 128: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)183

I

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12

34

20 G

S 4

30 /

GS

300

2 7

AC

C

IG1

IG2

ST2

AM

14 6

AM

2

1J3

1

120A ALT

1

40A AM1

1

15A AM2

A

1J6

1J1

5A IGN

10A

GA

UG

E

1H4

1N4

6B

AC

C

5B IG

2

12B SIL

6C PR

5C PR

+

1A PL–

2A PL+

2C

SFR

1C

SFR

+

5A

SFL

6A

SFL

+

11BP–

10BP+

SP

IRA

LC

AB

LE13BD–

14BD+

27BE1

10C

ES

R

7CFS

R

9C

SS

R

12C

VU

PR

43

21

9AES

L

12AFS

L

10ASS

L

7A

VU

PL

43

21

2II3

1II3

20B–S

R

9B+S

R

12

2IF

11

IF1

26B–S

L

15B+S

L

12

28BE2

IGB

ehin

d th

eco

mbi

natio

n m

eter

IFE

BLe

ft fe

nder

A

B–Y

B–W

B–W

W–B

W–R

W–L

W–R

W B–L

B–Y V–W

B–O

W W

Y–B

Y

Y–B

Y

Y–G

Y–R

Y–G

Y–R

Y–G

Y–R

Y

Y–B

W–B

GR

LG

L–Y

P

GR–L

LG–B

L–W

P–L

W–B

BR–W

B–W

BR

W–R

BR–W

B–W

BR

W–R

W–B

12

12

A

22

A

11

J 8(

LHD

)J3

2(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

J16(

LHD

)J3

9(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

RI1

2IG

NIT

ION

SW

A12

AIR

BA

G S

EN

SO

RFR

ON

T LH

A13

AIR

BA

G S

EN

SO

RFR

ON

T R

H

S13

SID

E A

IRB

AG

SE

NS

OR

LH

S14

SID

E A

IRB

AG

SE

NS

OR

RH

A32

AIR

BA

G S

QU

IB( S

teer

ing

Whe

el P

ad)

A31

AIR

BA

G S

QU

IB( F

ront

Pas

seng

er A

irbag

Ass

embl

y)

S20

SID

E A

IRB

AG

SQ

UIB

LH

S21

SID

E A

IRB

AG

SQ

UIB

RH

P14

PR

ETE

NS

ION

ER

LH

P15

PR

ETE

NS

ION

ER

RH

C 6

C 7

,

CE

NTE

R A

IRB

AG

SE

NS

OR

AS

SE

MB

LY

AB

SR

SP

ow

er

So

urc

e

BA

TTE

RY

C 8

, C

To DLC3<4–5><5–5><35–5>

12

12

12

12

2 1

VU

PL

SS

LFS

LE

SL

VU

PR

SS

RFS

RE

SR

9IA

1

7IK

1

( LH

D)

( RH

D)

1IH

12

IH1

1IK

22

IK2

( LH

D)

( RH

D)

11K

11A

( LH

D)

( RH

D)

1IN

12

IN1

31

5

21B

25B

8C

( LH

D)

R–B

G–W

B

R–G

G–R

(LHD)(LHD)

(LHD) (LHD)

8B

D1

4

B10BUCKLE SW RH ANDSEAT BELT WARNINGOCCUPANT DETECTION SENSOR

W–B(LHD)

BB

V–W

J35(

RH

D)

J18(

LHD

)JU

NC

TIO

NC

ON

NE

CTO

R

4C

ICR

3C

ICR

+Y–V

Y–O

12

C20

CU

RTA

IN S

HIE

LDA

IRB

AG

SQ

UIB

RH

3A

ICL–

4A

ICL+Y–V

Y–O

12

C19

CU

RTA

IN S

HIE

LDA

IRB

AG

SQ

UIB

LH

2IO

11

IO1

25B

FSL+

21B

FSL–

11A

LBE

+

51

3

B 9

BU

CK

LE S

W L

HA

ND

SE

AT

BE

LT W

AR

NIN

GO

CC

UP

AN

T D

ETE

CTI

ON

SE

NS

OR

5B

C1

G–Y

G–R

R–G

W–B

O

B

(RHD)

(RHD)

(RHD)

(RHD)

(RHD)

(RHD)

∗ 1

: 3U

Z–FE

∗ 2

: 2JZ

–GE

(LHD)

( RH

D)

RB

E+

FSR

+FS

R–

BL

Rea

r flo

orpa

rtitio

npa

nel R

H

Left

kick

pane

l

BB

12B

D1W–B

(LHD)W–B(LHD)

W–B

( LH

D)

J24

JUN

CTI

ON

CO

NN

EC

TOR

1IQ

12

IQ1

1IP

12

IP1Y

Y

Y

Y

4

AA

12B

C1

BJ

Rea

r flo

orpa

rtitio

npa

nel L

H

W–B(RHD) (RHD)

W–B(RHD)W–B

J46JUNCTIONCONNECTOR

Page 129: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)184

I OVERALL ELECTRICAL WIRING DIAGRAM

������������������������������������������������������������

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12

34

21 G

S 4

30 /

GS

300

Po

we

r S

ou

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Ho

rn

∗ 1

: Exc

ept A

ustra

lia∗

2 : A

ustra

lia

Wip

er

an

d W

ash

er

2

AC

C

IG1

AM

14

1J3

40A AM1

11 1

A 12 M

5ID

1

20A

WA

SH

ER

25A

WIP

ER

1J1

1F3

1F5

1B1

AA

IF

J 8

JUN

CTI

ON

CO

NN

EC

TOR

A

10A

GA

UG

E

IK15 IK12 IK16

EB

1D4 1

A

10B

9IJ

1

21

35

22

22

4IK

3

AA 6

G

W–L

G

W

L–O L–YB–Y

L–O

B–YG

L–O

12

A

11

22

B–L

W–BW–B

L–Y

L–R

L–B

L–R

L–B

W–BGR–B

G–B

W–B

W–B(LHD)

L

L

R–L Y

G

G

B

G–B G–B G–B

B

B

A

I12

IGN

ITIO

N S

W

J12(

LHD

)J3

5(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

BA

TTE

RY

W 2WASHER MOTOR

J10

JUN

CTI

ON

CO

NN

EC

TOR

10A HORN

120A ALT

WASHER LEVELWARNING LIGHT[COMB. METER]

BAC11 C12,

HO

RN

RE

LAY

H18

HO

RN

LH

H19

HO

RN

RH

To Body ECUNo. 1<1–14>

21

W 1

WA

SH

ER

LE

VE

LW

AR

NIN

G S

W

11

Left

kick

pan

elLe

ft fe

nder

+BF1

F2+1

+2+S

MIS

TW

FE

W

OFF

MIS

T

INT

MIS

T

LO MIS

T

HI

MIS

T

WA

SH

ER

WIP

ER

RE

LAY

M

EE

Und

er th

e A

BS

&TR

C &

VS

C a

ctua

tor

3II1

( LH

D)

( RH

D)

BA

BA

3B

7A

2B

8A

(LHD) (LHD)

IIC

owl s

ide

pane

l RH

A

W–B

( RH

D)

J42

JUN

CTI

ON

CO

NN

EC

TOR

11B

17A

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Page 130: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)185

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D)

J42JUNCTION CONNECTOR

AA

Page 131: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)186

I OVERALL ELECTRICAL WIRING DIAGRAM

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Page 132: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)187

I

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11( L

HD

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HD

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D)

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D)

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P23POWER SEAT MOTOR(Driver' sSeat Reclining Control)

22 M

P20POWER SEAT MOTOR(Driver' sSeat Front Vertical Control)

11( L

HD

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HD

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( LH

D)

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P22POWER SEAT MOTOR(Driver' sSeat Rear Vertical Control)

22( L

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HD

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D)

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9 96 6

10 55 10

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11 MM2 1

P29POWER SEAT MOTOR(FrontPassenger' s Seat Slide Control)

22

P28POWER SEAT MOTOR(FrontPassenger' s SeatReclining Control)

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P25POWER SEAT MOTOR(FrontPassenger' s Seat FrontVertical Control)

22( L

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HD

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P27POWER SEAT MOTOR(FrontPassenger' s Seat RearVertical Control)

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D)

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D)

Page 133: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)188

I OVERALL ELECTRICAL WIRING DIAGRAM

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D)

Page 134: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)189

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35

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do

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BA

TTE

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( LH

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Page 135: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)190

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63

I12

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10A FUEL OPN

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11

22

( LH

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( RH

D)

8

10A DOME 20A ECU–B1

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F 8FUEL LIDOPENER SW

F14FUEL LIDOPENER MOTOR

BA

TTE

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io a

nd P

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r<

29–3

><

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JUN

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CO

NN

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ON

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2

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NE

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J32

JUN

CTI

ON

CO

NN

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J18

JUN

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ON

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J37

JUN

CTI

ON

CO

NN

EC

TOR

( LH

D)

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LOC

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PASSENGERSEAT BELT

( LH

D)

( RH

D)

( LH

D)

( RH

D)

LG–B

Y

From Body ECU No. 2<1–4><2–2>

To CombinationMeter<31–6>

W–R

W–L

B–W

J21(

LHD

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HD

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ON

NE

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HD

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11K

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( LH

D)

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D)

Page 136: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)192

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300

2

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1

3

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11

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1

1J4

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TV

2H8

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1

4A

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+

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18B

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9B +B

5A TX

+

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17B

GN

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SP

D

BM

Qua

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A

From StereoComponentAmplifier<29–1><30–1>

To Front DoorSpeaker LH(LHD), RH(RHD)<29–2><30–2>

L–YB

GRB

GR

–R

GR

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W

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L–B

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GR

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O

V–W(LHD)L–R(RHD) V–W

W–B

W–BW–BL–R

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J10JUNCTIONCONNECTOR

J18

JUN

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CO

NN

EC

TOR

J 8

JUN

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ON

CO

NN

EC

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J22(

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eter

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( RH

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( LH

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( RH

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JUNCTION CONNECTOR

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33G

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KLS

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AC

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7IG

1

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1

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1

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10

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2

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10

1IG

2

IM2

1

3IG

2

IM2

3

12IG

2

IM2

12

10IM

3

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10

3H3

( LH

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( RH

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U–I

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B–R(RHD) CC

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J41JUNCTIONCONNECTOR

1D4

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GA

UG

E

4B

–Y

11K

11A

( LH

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( RH

D)

G–W

8STP From Stop Light SW

<8–4><9–3>W

–B( R

HD

)

M 2

M 3

,

MU

LTI–

DIS

PLA

Y

AB

M 6

, C

A2

R–L

A3

LG–B

IG

R–L

Body ECU No. 2<1–4><2–2>

B14

P–B

9IJ

2

IE2

9

To CheckConnector<5–8><35–9>

( LH

D)

( RH

D)

B13

Y–BTo Parking Brake SW<1–13><2–14>

To Speedometer[Comb. Meter]<31–4>

V–W

5B

14B

G–Y R–B

From

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cato

r S

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eutra

l Sta

rt S

W]

<16

–5>

<36

–5>

3IM

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HD

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( RH

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N 3

N 4

,

NA

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ATI

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G–R

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Page 137: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)193

I

56

78

28 G

S 4

30 /

GS

300

(C

ont'

d)

6CVG

1CVR

8C

SY

NC

3CB

7CG

2CR

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11B

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TX1+

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To R

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and

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–3>

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–3>

Y

W

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R

BR

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Page 138: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)194

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R–L B–LL–YL–Y

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OR

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peak

er)

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AR

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From

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RADIO AND PLAYER

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PO

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4)+B

( ∗5)

AC

CM

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BU

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L+L–

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AC

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MU

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M+

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+C

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BU

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ND

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MU

TETX

M+

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–S

GD

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DL+

CD

L–C

DR

+C

DR

ETL

MT

RL–

RL+

RR

–R

R+

WF–

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FR+

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FL+

+B

S10

, C

S11

, D

L–B(∗ 1)

L–R(∗ 1)

(∗ 2)

(∗ 2)

To Navigation ECU<28–3>

From Navigation ECU<28–3>

V

P(∗ 1)

(∗ 1)

B

Po

we

r S

ou

rce

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dio

an

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r ( L

HD

)

∗ 1

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EX

US

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igat

ion

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tem

∗ 2

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LE

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avig

atio

n S

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3 : w

/ CD

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omat

ic C

hang

er

TWE

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TER

(∗ 3)

(∗ 3)

(∗ 3)

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To A

uto

Ant

enna

Con

trol R

elay

and

Mot

or<

27–2

>

8GN

D W–B(∗ 3)

(∗ 3)

10C

G–RTo NavigationECU<28–3>

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4A

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(∗ 1)

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U

AN

TA

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TA

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2A

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C4

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( ∗5)

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: G. C

. C.

∗ 5

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ept G

. C. C

.

R 4, C

TX–

TX+

( ∗4)

( ∗5)

Page 139: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)195

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34

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120A ALT

30A RADIO NO. 1

11

1

2B2

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1

10A DOME

2H12

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1

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2

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BA

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AB

BU

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D

B( ∗

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( ∗5)

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ND

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+C

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US

+B

US

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10,

C

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(∗ 1)

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(∗ 2)

To Navigation ECU<28–3>

From Navigation ECU<28–3>

L

LG(∗ 1)

(∗ 1)

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we

r S

ou

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dio

an

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r ( R

HD

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US

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igat

ion

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tem

∗ 2

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avig

atio

n S

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/ CD

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omat

ic C

hang

er

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ETE

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TER

(∗ 3)

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(∗ 3)

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To A

uto

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enna

Con

trol

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ay a

nd M

otor

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–2>

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TA

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( ∗4)

( ∗5)

( ∗4)

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( ∗5)

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∗ 4

: Aus

tralia

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: Exc

ept A

ustra

lia

Page 140: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)196

I OVERALL ELECTRICAL WIRING DIAGRAM

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23

4

31 G

S 4

30 /

GS

300

( Con

t. n

ext p

age)

1

120A ALT

1

40A AM1

1J3

2

AC

C

IG1

AM

14

1J1

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GA

UG

E

1D4 1

A

W–L

REAR LIGHT

SEAT BELT

OILPRESSURE

ECT SNOW

ECT PWR

CRUISE

FUEL

CHARGE

OIL LEVEL

FUEL

WATER

SPEEDOMETER

TACHOMETER

HEADLIGHT BEAM LEVEL CONTROL

ABS

VSC

VSC OFF

OD

OM

ETE

RTR

IP M

ETE

R

B–Y

A/T

PR

ND

43

2

18A

16B

13B

15B

14B

5B

17B

16A

3B

4B

6B

SLIP

BRAKE

ODO/TRIP

RESET

R–L

C11

C12

,

CO

MB

INA

TIO

N M

ETE

R

AB

12IC

1

32

12

3IC

1

B–Y

GR

R

G

BR–Y

Y–R Y–R

BR–Y B–O

B–O

B–O

B–Y

See Headlight Beam LevelControl System(Automatic)<15–2>

From Igniter(∗ 3, ∗ 5)<3–3>From Engine andECT ECU(∗ 2, ∗ 4)<35–11>

To P

PS

EC

U<

26–1

>To N

avig

atio

nE

CU

<28

–3>

See

VS

C S

yste

m<

18–9

><

18–1

0><

19–9

><

19–1

0>

F15FUEL SENDER

F17FUEL SENDER(Sub)

Po

we

r S

ou

rce

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mb

ina

tion

Me

ter

∗ 1

: Eur

ope

1 12 2

W B–L

BA

TTE

RY

I12

IGN

ITIO

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W

CP

U

15IJ

1

IE1

15

10IJ

2

IE2

10

13IJ

1

IE1

13

16IJ

1

IE1

16

CC

( ∗5)

DB

( ∗4)

AA

( LH

D)

AA

DB

DB

V–W

V–W

7IM

3

IL3

719IM

3

IL3

19( L

HD

)

( RH

D)

( LH

D)

( RH

D)

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5A SR

S–B

( LH

D)

( RH

D)

V–W

CC

CC

AA

( LH

D)

CC

( ∗5)

DB

( ∗4)

IJ27

V–W(RHD)

V–W

( RH

D)

7IE

2V

–W ( ∗3)

V–W(LHD) To M

ulti–

Dis

play

<28

–4>

V–W ( ∗2)

J13

J36

,

JUN

CTI

ON

CO

NN

EC

TOR

AB

, C

AL–

B

L–B

∗ 2

: LH

D 3

UZ–

FE∗

3 : L

HD

2JZ

–GE

∗ 4

: RH

D 3

UZ–

FE∗

5 : R

HD

2JZ

–GE

11K

11A

( LH

D)

( RH

D)

L

Page 141: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)197

I

������������������������

56

78

31 G

S 4

30 /

GS

300

(C

ont'

d)

14A

1B

22A

8B

12B

6A

5A

4A

13A

15A

7B

11B

2B

TAIL

FRONT FOG

DOOR

HIGH BEAM

SRS

CHECK ENGINE

CP

U

C11

C12

,

CO

MB

INA

TIO

N M

ETE

R

AB

YY

See HeadlightSystem<6–3><7–2>

See MultiplexCommunicationSystem<1–8><2–8>

From PassengerSeat BeltWarning Light[Clock]<27–4>

1D5

1F13

1G6

IIR

ight

sid

eof

the

cow

l pan

el

AA

A A

W–B

O

W–B

W–B

W–B

W–B

J 8(

LHD

)J4

2(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

J18JUNCTIONCONNECTOR

See Engine ControlSystem<4–3><5–3><35–3>

See MultiplexCommunicationSystem<1–7><1–8><2–7><2–8>

See HeadlightSystem<6–3><7–2>

Co

mb

ina

tion

Me

ter

R 8

RH

EO

STA

T

54

3

W–B

W

G

BUZZER

(∗ 1) (∗ 1)

∗ 2

: Exc

ept G

. C. C

.

18IJ

1

IE1

18( L

HD

)

( RH

D)

∗ 1

: Eur

ope

11IJ

1

IE1

11( L

HD

)

( RH

D)

IFLe

ftki

ckpa

nel

(LHD) (LHD)

AB

BW

–B

W–B

( RH

D)

(RHD)

J37

JUN

CTI

ON

CO

NN

EC

TOR

J32

JUN

CTI

ON

CO

NN

EC

TOR

(∗ 2)(∗ 2)

REAR FOG

ER

VT

10B

2A

3A

WASHER

TURN LH

TURN RH

See Turn Signal and HazardWarning Light System<12–4><13–4>

See Wiper andWasher System<21–4>

A

L–B

9A

See IlluminationSystem<10–3><11–2>

L–B

IF :

Left

kick

pan

el( L

HD

)II

: Cow

l sid

e pa

nel R

H( R

HD

)

Page 142: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)198

I OVERALL ELECTRICAL WIRING DIAGRAM

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12

34

32 G

S 4

30 /

GS

300

( Con

t. n

ext p

age)

1

20A ECU–B1

120A ALT

50A HEATER

11

1

11

12

22

40A AM1

1J3

2B2

5A ECU–B2

2F7

2

AC

C

IG1

AM

1

3 4

1J1

10A HEATER

4

EB

19

33

4

21

35

21

53

4

33

44

4 IIR

ight

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e of

the

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l pan

el

AA

11E

B1

EC

ED

AA

To E

ngin

ean

d E

CT

EC

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><

5–10

>

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ine

and

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T E

CU

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2B

1B

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2A

M2

1

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ight

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e of

the

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l pan

el

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RA

DIO

NO

. 2

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3E3

A B C D

21D

10D

18B

20D

2E

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E F

EB

Left

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41

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tom

atic

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Co

nd

itio

ne

rP

ow

er

So

urc

e

31

2

43

2 1

B–L

W

L

R–LW–R

W–L

R–L

GR

L–R

L–W L–W

L–R

R–L

GR

BR

L(LHD, RHD ∗ 3)

LG–R

L–B

BR

L

W–B

W–B

W–B

BR

BR

BR

R

BW–B

R–L

L–B

R–L

L–O

L–W L–W

GR

V

L–B

W–B W–B

W–R GR

L–W

( ∗1)

L–R

( ∗1) L R–L

LG–R

W–B

W–B

L–B

L–B

R–L

R–L

R–L

BR

BR

R–L

R–L

L

B–YL–Y

W–R

R–L

L–Y

W–R

R–LGR

BA

TTE

RY

L–W

12

IGG

AS

S. G

GN

DP

RE

TAM

E2

MP

X2

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IGN

ITIO

N S

W

J18

JUN

CTI

ON

CO

NN

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TOR

HE

ATE

RR

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/C C

OM

PR

ELA

Y

To Body ECU No. 1<1–15><2–15>

J 2(LHD ∗ 3)J26(RHD)J49(LHD ∗ 2)JUNCTION CONNECTOR

BLOWER MOTORCONTROLLER

BAB 3 B 4,

B 2

BLO

WE

R M

OTO

R

A 3A/C MAGNETIC CLUTCHAND LOCK SENSOR

E10

EX

HA

US

T G

AS

SE

NS

OR

E 3

E 5

,

EN

GIN

E A

ND

EC

T E

CU

BD

A 1A/C AMBIENTTEMP. SENSOR

To FAN NO. 3Relay<33–3>

L–W

+BS

IG

ND

M+

M–

∗ 3

: 2JZ

–GE

( ∗1

∗3)

( G. C

. C. )

IFLe

ft ki

ckpa

nel

(LHD) (LHD)

W–B(RHD) A

J32

JUN

CTI

ON

CO

NN

EC

TOR

33G

33A

( LH

D)

( RH

D)

81F

EB

CA

EB

( RH

D)

CA

( LH

D)

ID14

4 IJ1

( RH

D)

( LH

D)

IFLe

ft ki

ckpa

nel

W–B

( LH

D)

( RH

D)

W–B(RHD)

(LHD)

AJ3

2JU

NC

TIO

NC

ON

NE

CTO

R

5ID

1

IJ1

5

12ID

1

IJ1

12( L

HD

)

( RH

D)

(∗ 1)

(∗ 1)

(∗ 1)

(∗ 1)

(∗ 1)

( ∗1)

( ∗1)

CA

( LH

D)

EB

( RH

D)

J13

J31

,

JUN

CTI

ON

CO

NN

EC

TOR

AB

IA31

2 II1( L

HD

)(R

HD

)

3ID

1

IJ1

3( L

HD

)

( RH

D)

(∗ 1)

2IE

1

IG1

2

1IE

1

IG1

1

3IE

1

IG1

3( L

HD

)

( RH

D)

Fron

t sid

e of

the

inta

kem

anifo

ld

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r si

de o

fth

e in

take

man

ifold

A 4A/C DUALPRESSURE SW

27D

( ∗2)

( ∗3)

MP

X2

22

W(RHD ∗ 2)

MP

X1

24

L(RHD ∗ 2)

C 8

CE

NTE

R A

IRB

AG

SE

NS

OR

AS

SE

MB

LY

19E

18E

25E

BR(∗ 2)

(∗ 3) (∗ 3)

E 6

, E

∗ 2

: 3U

Z–FE

∗ 1

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ept G

. C. C

.

11K

11A

( LH

D)

( RH

D)

2E

A3

EA

21

( ∗3)

( ∗2)

(∗ 3)(∗ 3)

EC

RH

ban

k of

the

cylin

der

head

ED

LH b

ank

ofth

e cy

linde

rhe

ad

W–B

( ∗2)

W–B

( ∗2)

W–B

( ∗2)

Page 143: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)199

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56

78

32 G

S 4

30 /

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A B C D E F

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2A

1A

5A

4A

2B

13B

5B

10B

7B

15B

21

3B

14B

6B

11B

8B

16B

AM

CP

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MH

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OF

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+

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HD

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: Cow

l sid

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Rig

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ide

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wl p

anel

AA

A

14A

19A

13IJ

16

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11

18A

10A

21A

6A

7A

4B

1B

9B

16A

Au

tom

atic

Air

Co

nd

itio

ne

r

37

65

11

23

76

53

17

65

31

76

53

L–R

( ∗1)

L–W

( ∗1)

GR

W–R L R–L

W–R

GR

L–W

L–R

R

B–Y

B–O

W–L

R–B

R–W

B–W

B–R

W–R

W–G

W–B

G–W

G–B

G–R

G

G–Y

G–O

B–O

B–W

W

B–L

B

R–G

R–L

L

R–G

B–R

B–Y

W

B–W

B–O

B–Y

B–R

W

B–W

B–O

B–Y

B–R

G–O

G–Y

GG

G–Y

G–O

G–R

G–B

G–W

W–B

W–B W–B

W–B

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R

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D

1

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See MultiplexCommunicationSystem<1–8><2–8>

A20A/C THERMISTOR

A28

AIR

MIX

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A17

,

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AS

SE

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LY

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(LHD)(LHD)

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D)

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( LH

D)

CA

( LH

D)

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( RH

D)

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1

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11( L

HD

)

( RH

D)

JUNCTION CONNECTOR

BAJ19 J31,

(∗ 1)

(∗ 1)

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53A

( LH

D)

( RH

D)

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ft ki

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nel

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AB

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. C. C

.

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IH1

13

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1

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14

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8

7IF

1

IH1

7

6IF

1

IH1

6

10IF

1

IH1

10

11IF

1

IH1

11

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1

IH1

9

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5

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D)

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D)

Page 144: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)200

I OVERALL ELECTRICAL WIRING DIAGRAM

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12

34

33 G

S 4

30 /

GS

300

1

120A

ALT

15A

AM

2

50A

FAN

MA

IN

11

9IA

1

IG2

ST2

67

AM

2

EE

Und

er th

e A

BS

&TR

C &

VS

Cac

tuat

or1

12

35

4

111

1

111

30A

CD

SFA

N

30A

RD

IFA

N1J

6

5A IGN

1G7 4

EB

1

4IA

2

8IA

1

12 M

1E

B2

3

21

53

4

3 33

3

12

35

42

31

33

33

33

33

3E

B2

7IA

1

2E

B2

5E

B1

2E

B1

EB

23 12

12 M

4E

B2

33

3

BA

TTE

RY

B

W–RW–R

B–L

W–BW–B

B–O B–O

B–O

WWW–L

B–O

W–RW–R

B–O

W–R

G–Y

W–G

W–G

G–Y

B–W

W–L

W–R

W–L

G–Y

W–G

B–O

W–G

W–B

W–B

W–B W–B

W–BW–GW–G

G–Y L–W

W–B

W–B

W–B

W–R

W–G

Ra

dia

tor

Fa

n a

nd

Co

nd

en

ser

Fa

nP

ow

er

So

urc

e

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GM

AIN

RE

LAY

R

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11

22

2 22

1 11

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From A/C COMPRelay<32–2>

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NO

. 3R

ELA

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O. 1

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IGN

ITIO

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W

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GLE

PR

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TER

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MO

TOR

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6(R

HD

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NC

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NC

ON

NE

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R

AA

J 5(LHD)J29(RHD)JUNCTIONCONNECTOR

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9(R

HD

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NC

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NC

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NE

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R

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( RH

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( LH

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( RH

D)

8IA

1( L

HD

)( R

HD

)7

IA1

( LH

D)

( RH

D)

Left

fend

er

Page 145: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)201

I

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12

34

34 G

S 4

30 /

GS

300

Pow

er S

ourc

e

1

1

15A AM2

1

1

40A MAIN

21

35

1

11

8E

A2

1E

C1

1A

1 B

EE

AB

CA

CA

5E

A2

5A STA

RTE

R

11F EA

39

1F10

AA

7E

A2

6

9

P N

1

EC

B B–R

B–L

B–L

22

W–R

B

L–YB–L

B–W B

W–R

BB

W–B W–B

B

BBR

LG

G–W

S 2

S 3

,

STA

RTE

R

AB

B–W B–W B

W–B

BB

BB

W–B

W–BB

B

B

W–B

W–B

W–B

B

W–B

B

W–B

B

W–B

B

32

23

23

23

23

R

41

41

41

41

41

41

41

41 3

23

23

2

W–B

B

W–B

B

W–B

B

B

G

R–L

G

P–L

LG

L–R

L–B

L

G–B

G

G–B

B–W

L–B L–B

LG

I12

IGN

ITIO

N S

W

J16(

LHD

)J3

9(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

STA

RTE

RR

ELA

Y

B

BA

TTE

RY

To Engine and ECT ECU<35–10>

N 6NOISE FILTER(Ignition No. 2)

I16IGNITION COIL AND IGNITER NO. 1

I19IGNITION COIL AND IGNITER NO. 4

I21IGNITION COIL AND IGNITER NO. 6

I22IGNITION COIL AND IGNITER NO. 7

I17IGNITION COIL AND IGNITER NO. 2

L–B

I18IGNITION COIL AND IGNITER NO. 3

I20IGNITION COIL AND IGNITER NO. 5

I23IGNITION COIL AND IGNITER NO. 8

LG

W–B

To E

ngin

e C

ontro

l Mod

ule

<4–

9><

4–10

>

7IG

2

ST2

AM

26 8

Und

er th

e A

BS

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C &

VS

C a

ctua

tor

AA

W–B

J29J 5JUNCTIONCONNECTOR

Sta

rtin

g a

nd

Ig

niti

on

(3

UZ

–F

E)

BB

J48

JUN

CTI

ON

CO

NN

EC

TOR

B

B

JUNCTION CONNECTOR

BAJ 3 J 4,

N 1NEUTRAL START SW

ED

1

BB

B

B

B

G

AAA

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G–B

N 5NOISE FILTER(Ignition No. 1)

W–B

W–B

W–B

W–B

W–B

B

W–B

7IK

1

IA1

9( L

HD

)

( RH

D)

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32

( RH

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(RHD)

7IA

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IA2

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ank

of th

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ban

k of

the

cylin

der

head

Page 146: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)202

I OVERALL ELECTRICAL WIRING DIAGRAM

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12

34

( Con

t. n

ext p

age)

35 G

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30 /

GS

300

1

15A ETCS

25A EFI

120A ALT

15A AM2

1

2

11

2

1

40A AM1

7. 5A OBD

1H12

1J3

2

AC

C

IG1

IG2

ST2

AM

14

J16(

LHD

)J3

9(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

6

B–Y

7A

M2

1

F16FUEL PUMPCONTROL ECU

J21(

LHD

)J4

4(R

HD

)JU

NC

TIO

NC

ON

NE

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1

21

35

11

F15FUEL PUMP

8IC

2

54 M

EE

Und

er th

e A

BS

&TR

C &

VS

C a

ctua

tor

W–B

BK

Qua

rter

pane

l LH

BJ

1J1

10A

GA

UG

E

1D4 1

A

12B

W–B

( LH

D)

II

1E

A2

2F13

2G6

EC

RH

ban

kof

the

cylin

der

head

1J6

5A IGN

1G7

P

W( L

HD

) , W

–G( R

HD

)J

W

K L NM

B–L

W–R

W

B–Y

B–Y

V–Y(RHD)L–Y(LHD)

W–R

W–L

B

B–Y

B–Y

V–Y(RHD)L–Y(LHD)

W–B

B–R B–R B–R

W–B

R–L

B

W–B(LHD)

BR(LHD)W–B(RHD)

W–G(RHD) W (LHD)

W–B W–B W–B

W–B

B–O B–O

B–Y

B–Y

B–W

B–Y

B–R

B–W

B–Y

B–W

B–WB–Y

W–B

L–R

L–W

11

11

45

7E

65

98

710

A

E

16

AA

A

A

A

A

FPC

DI

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CG

SG

SIL

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T

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A B

L–Y

( LH

D) ,

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B–R

HG

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W

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GR

En

gin

e C

on

tro

l a

nd

En

gin

e I

mm

ob

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m (

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Z–

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ow

er

So

urc

e

2

BA

TTE

RY

2

I12

IGN

ITIO

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WE

FIR

ELA

Y

CHECK ENGINEWARNING LIGHT[COMB. METER]

BAC11 C12,

B

D 2DLC3

J10JUNCTIONCONNECTOR

J15(LHD)J36(RHD)JUNCTIONCONNECTOR

B–O

FC

W–B

B–W

W–B

DWB–Y

R( L

HD

) , W

( RH

D)

G

W–B

W–B

O

A

W–B

2 1

A A

J 5(LHD)J29(RHD)JUNCTIONCONNECTOR

AA

J49JUNCTIONCONNECTOR

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B–Y

E

W(RHD)R(LHD)

15 WFS

E

L–Y

( LH

D) ,

V–Y

( RH

D)

11K

11A

7IK

1

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9( L

HD

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( RH

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( LH

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( RH

D)

1II1IA

33

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D)

( LH

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(LHD)

(LHD) (LHD)

Rea

r flo

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owl s

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A

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de o

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wl

pane

l

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13

TC

P–B

( LH

D)

Q

P–B(LHD)

Page 147: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)203

I

56

78

( Con

t. n

ext p

age)

35 G

S 4

30 /

GS

300

(C

ont'

d)

En

gin

e C

on

tro

l a

nd

En

gin

e I

mm

ob

ilise

r S

yste

m (

3U

Z–

FE

)

B

B

A

B

D L

B

M N

C31

L–Y

( LH

D) ,

V–Y

( RH

D)

21

24C

BR

R–L

33D

34

W 3WATER TEMP. SENSOR

D

21

21

21

21B

21BB

21

B

15A

17C

14A

C16

13A

15C

I 8INJECTOR NO. 4

I 5INJECTOR NO. 1

I 6INJECTOR NO. 2

I 7INJECTOR NO. 3

I 9INJECTOR NO. 5

I10INJECTOR NO. 6

SIL

+B

6E

5E

BA

BA

B

BB

BB+B

1

4E

A3

OX

R2

17D

HTR

2

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FA

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1

H14HEATED OXYGEN SENSOR(Bank 1 Sensor 1)

26E

H16HEATED OXYGEN SENSOR(Bank 2 Sensor 1)

H15HEATED OXYGEN SENSOR(Bank 1 Sensor 2)

14

B

H23HEATED OXYGENSENSOR(Bank 2Sensor 2)

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JUNCTION CONNECTOR

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#2

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BR

W

BR

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( ∗1)

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2

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( ∗1)

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119

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W

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L–Y(LHD), V–Y(RHD)

W

A11AIR FLOW METER

V 2VSV(ACIS)

42

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F

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W W( L

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B

2

W

From

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ter

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enso

r A

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>

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( LH

D)

FC

A

B–R

W–B

( LH

D)

PW

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∗ 1

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B–R

B–R

B–R

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BR

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12

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J 9(

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( LH

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( RH

D)

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D)

JUNCTION CONNECTOR

BAJ27 J28, (RHD)

(LHD), J 4J 3 A B

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D)

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HD

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A10

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43

( LH

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J 9(LHD)J36(RHD)JUNCTIONCONNECTOR

P–B

( LH

D)

Q

P–B

( LH

D)

I

Page 148: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)204

I OVERALL ELECTRICAL WIRING DIAGRAM

910

1112

35 G

S 4

30 /

GS

300

(C

ont'

d)

32B

31A

32A

EK

NL

NE

+N

E–

B–R

51

23

4

7BE1

E31

C9

D24

A6

21D

20D

MP

X1

MP

X2

En

gin

e C

on

tro

l a

nd

En

gin

e I

mm

ob

ilise

r S

yste

m (

3U

Z–

FE

)

E 2

E 3

,

EN

GIN

E A

ND

EC

T E

CU

AB

E 4

, C

16E

C13

A26

C12

5C

AC

MG

IGT2

IGT7

IGT4

IF2R

From A/C COMP Relay<32–2>

L–O

EB

110

From

Igni

tion

Coi

l and

Igni

ter

<34

–2>

<34

–3>

<34

–4>

L–O

L–R

P–L

R

L–B

B

B1

B2

1

K 2KNOCK SENSOR 2

K 1KNOCK SENSOR 1

1

LH b

ank

of th

ecy

linde

r he

adE

D

B

W

KN

KL

KN

KR

E

A16

C11

17A

IGT3

IGT6

IGT1

L

R–L

G–W

A27

IGT5G

C10

IGT8B–W

G–B

D23

B–W

3E

C1

2E

C1 GR

BSee MultiplexCommunication System<1–8><2–8>

29D

30D

9D

To ABS & TRAC & VSC ECU<18–4><19–4>

G–R

L

V

TRC

–E

NG

–N

EO

D18

TRC

+P

D19

EN

G+LG

From ABS & TRAC & VSC ECU<18–4><19–4>

E 5

, D

E 6

, E

34A

LCK

I

To A/C Magnetic Clutchand Lock Sensor<32–2>

GR

14B 21

Y W–B

MO

L

E 9ENGINE OILLEVEL SENSOR

30E

11E

V

Y

IMLD

KS

W

To Security Indicator[Rheostat]<1–14><2–14>

To Unlock WarningSW<1–3><2–3>

∗ 1

: Shi

elde

d

8C

OC

V+

OC

R–

OC

R+

OC

V–

L–W

L–B

G–W

L–Y

L–R

TXC

TR

XC

KC

OD

E

TXC

TR

XC

KC

OD

E

+BG

ND

5A

BR

G

W–B

( LH

D)

F

B–R

W–B

OIL LEVEL

OIL TEMP.

12

AN

T1A

NT2

TRA

NS

PO

ND

ER

KE

Y C

OIL

BR

B

BR

C

12

C 4CRANKSHAFTPOSITION SENSOR

1

28A

29A

G2–

G2

C 1CAMSHAFT POSITIONSENSOR

2

30

EG

2

A21

EN

E

A

L

Y

G

R

2C

1C

E01

E02

BB

AA

EC

A

W–B

B A

RH

ban

k of

the

cylin

der

head

B

J49

JUN

CTI

ON

CO

NN

EC

TOR

W–B

W–B

BR

BR

W–B

4AE03 W–B

12E

B

STA

4D

G–W

STP

16D

B–Y

TAC

H To CombinationMeter<31–3>

From Stop LightSW<8–4><9–4>

From Neutral Start SW<34–2>

21

21

C21CAMSHAFT TIMING OILCONTROL VALVE LH

C22CAMSHAFT TIMING OILCONTROL VALVE RH

4C IF2LG–B

7C

IF1RG

6C IF1LLG

BR

(∗ 1)

(∗ 1)

(∗ 1)

3

BR

E1

D3

+BTC

1112

DD

P–B

B–R

P–B P–B

TC

P–B(LHD)

BR

A

B–R

D

T 6TRANSPONDER KEYAMPLIFIER

CCC

3C

HE

CK

CO

NN

EC

TOR

CP

–B( R

HD

)

DP

–B( R

HD

)D

P–B(RHD)

P–B

( RH

D)

H

FromMulti–Display<28–4>J

9(LH

D)

J31(

RH

D)

JUN

CTI

ON

CO

NN

EC

TOR

BR

IIC

owl s

ide

pane

lR

H

AAA

(LHD)

W–B

( RH

D)

W–B(RHD)

J37

JUN

CTI

ON

CO

NN

EC

TOR

J42

JUN

CTI

ON

CO

NN

EC

TOR

J38JUNCTIONCONNECTOR

( Con

t. n

ext p

age)

BR

BR

P–B

( LH

D)

I

P–B(LHD)

Page 149: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)205

I

1314

1516

35 G

S 4

30 /

GS

300

(C

ont'

d)

2E

1E EB

Left

fend

er

EC

EO

M

W–B

W–B W–B

T 3

THR

OTT

LE P

OS

ITIO

N S

EN

SO

R

En

gin

e C

on

tro

l a

nd

En

gin

e I

mm

ob

ilise

r S

yste

m (

3U

Z–

FE

)

E 2

E 3

,

EN

GIN

E A

ND

EC

T E

CU

AB

E 4

, C

A2

A3

A23

A25

1A

21

L–R

Y

L

VTA

Y

(∗ 1)

VC

M+

M–

GE

01

19C

18C

VV

R+

VV

R–

18A

19A

VV

L+V

VL–

E 5

, D

E 6

, E

7A 1M

OP

S Y–B

O 2OIL PRESSURE SW

∗ 1

: Shi

elde

d

12

12

V 9VVT SENSOR RH

V 8VVT SENSOR LH

20

EV

VL

A20

EV

VR

C

L

Y

G

R

A24

3

B

VTA

2

A22

BR

ETA

(∗ 1)

(∗ 1)

412 M

T 2THROTTLE CONTROLMOTOR

L

Page 150: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)206

I OVERALL ELECTRICAL WIRING DIAGRAM

��������������������������������������������������

�������������������������������������������������������

12

34

( Con

t. n

ext p

age)

36 G

S 4

30 /

GS

300

120A ALT

15A AM2

25A EFI

1

1

2

11

1

9IA

1

40A AM1

1J3

AM

27

64A

M1

ST2IG

2

IG1

AC

C

2

22

11

21

35

11

11

EE

Und

er th

e A

BS

&TR

C &

VS

C a

ctua

tor

15IA

2

13E

4E

17E1J

6

5A IGN

1G7

21B

20B

23B

22B

25A

24A

23A

3A

2A

21

E

AA

E

12

6E

5E

B–Y

BA

BA

BB

B19

6

B18

12

B17

5

B16

11

B11

410

10B

B13

39

12B

B35

28

34B

7B

1E

2E

C1

2C

Left

fend

erE

BE

CR

H b

ank

ofth

e cy

linde

rhe

ad

ED

LH b

ank

ofth

e cy

linde

rhe

ad

AA

B27

17

26B

BA

TTE

RY

I12

IGN

ITIO

N S

W

J16

JUN

CTI

ON

CO

NN

EC

TOR

E 1

EC

T S

OLE

NO

ID

Y

B–Y

B–Y

B–Y

B–O B–O

B–Y

B–Y

B–R

W–B

B–R

B–R

B–R

R

W

G

G–R

L–Y

L–R

BR

L

B

G–B

G–Y

BR

W–B

W–B

W–B

W–B W–B

W–B

BR

B–R

B–Y

B–Y

B–Y

W–R

W

W–R

W–L

W–L

B–WB–Y

B–W

S 1SPEED SENSOR(ECT)

Y

L

G

R

O 1O/D DIRECT CLUTCHSPEED SENSOR

EFI RELAY JUNCTION CONNECTOR

BAJ 3 J 4,

BA

TTM

RE

LN

CO

–IG

SW

NC

O+

VTA

2S

P2+

SP

2–V

TA

+B

VC

M+

M–

SLU

–+B

1S

1S

2S

3S

4S

LU+

SLN

+S

LN–

SLT

+S

LT–

OIL

EO

ILE

1E

01E

02E

CE

OM

E 2

EN

GIN

E A

ND

EC

T E

CU

AE

3,

BE

4,

CE

5,

DE

6,

E

1A

GE

01

3D TC

12E STA

4D STP

See

Eng

ine

Con

trol

and

Eng

ine

Imm

obilis

er S

yste

m<

35–6

><

35–7

><

35–8

><

35–1

2>

A

Po

we

r S

ou

rce

EC

T a

nd

A/T

In

dic

ato

r ( 3

UZ

–F

E)

B–L

O

O

GR

G

L

R

BR

LG

V

Y

B

W

2 1

AA

J 5(LHD)J29(RHD)JUNCTION CONNECTOR

22A ETA

J15(LHD)J36(RHD)JUNCTIONCONNECTOR

24C

32D

33D

34D

35D

VP

A2

THW

VP

AE

PA

VC

PA

26D

EP

TK

27D

VP

TK

25C

ETH

W

4AE03 W–B W–B

W–B

BA

A

BA

W–B

J49

JUN

CTI

ON

CO

NN

EC

TOR

3II4IA

13

( RH

D)

( LH

D)

3IA

3

II11

( LH

D)

( RH

D)

J14(

LHD

)J3

4(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

(LHD)

(RHD)BAJ27 J28,

C3

W–B

ME

01 W–B

11K

11A

( LH

D)

( RH

D)

Page 151: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)207

I

������������������������������������������������������������

���������������

56

78

36 G

S 4

30 /

GS

300

(C

ont'

d)

A

A

LL2L

DL

NL

RL

PL

3

84

75

21 E

A2

2E

A2

34

EA

210

EA

2

5B

6B

3B

13D

4B

12D

6E

A3

21D

23A

24A

CP

U

2211J1

10A

GA

UG

E

1D4

1H4

A

A

BO

DY

EC

U N

O. 1

B 5

B

71

3

B

B

BA

EN

GIN

E A

ND

EC

T E

CU

, E

3E

2

W–B

G

G–R

W

Y–B

G–B(LHD)W–B(RHD)G–B

Y–B

G

W

G–Y

G–R

G

G–B

R–L

R–L

R–L

W G–W

G–R

B–Y

W–B

R

R

B–Y

PW

R

MP

X1

SN

OW

E11

EC

T P

ATT

ER

NS

ELE

CT

SW

C,

E 4

D,

E 5

E,

E 6

RP

ND

32

1D5 13

1F IIR

ight

sid

e of

the

cow

l pan

el

AAJ1

8JU

NC

TIO

NC

ON

NE

CTO

R

W–B W–B W–B

ECT SNOW

ECT PWR

L

2

3

4

D

N

R

A/T P

C11

CO

MB

INA

TIO

N M

ETE

R

N 1

A/T

IND

ICA

TOR

LIG

HT

SW

[NE

UTR

AL

STA

RT

SW

]

J 9(LHD)J31(RHD)JUNCTION CONNECTORE

CT

an

d A

/T I

nd

ica

tor

( 3U

Z–

FE

)

BJ1

8(LH

D)

J35(

RH

D)

JUN

CTI

ON

CO

NN

EC

TOR

E A E A

E B

15D

14D

To S

hift

Lock

Con

trol E

CU

<28

–2>

G

Y–B

R–Y

Y–G

L4

See

Mul

tiple

xC

omm

unic

atio

n S

yste

m<

1–11

><

2–10

>

C

SNOW

PWR19A

20D

MP

X2

A D A A A D A

R–W R–B

R–W R–B

C B F B

To ABS & TRAC &VSC ECU<18–5><19–5>

R–W

R–B

MP

X1J2

7J2

8,

JUN

CTI

ON

CO

NN

EC

TOR

AB

6E

A2

9E

A2

R–BTo Navigation ECU<28–4>

( RH

D)

J 3

J 4

, A

B( L

HD

)

J27

J28

,

JUN

CTI

ON

CO

NN

EC

TOR

AB

( RH

D)

J 3

J 4

, A

B( L

HD

)

BAA

( LH

D)

( RH

D)

A( L

HD

)( R

HD

)

G–B

( LH

D)

IFLe

ft ki

ck p

anel

J32

JUN

CTI

ON

CO

NN

EC

TOR

W–B

( RH

D)

A

9E 12

K 3

KIC

K D

OW

N S

W

AA IF

: Le

ft ki

ck p

anel

( LH

D)

II : C

owl s

ide

pane

l RH

( RH

D)

J10(

LHD

)J3

7(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

AJ

8(LH

D)

J32(

RH

D)

JUN

CTI

ON

CO

NN

EC

TOR

W–B

Y–R W–B

(LHD) (LHD)

( LH

D)

IFLe

ft ki

ckpa

nel

AJ3

2JU

NC

TIO

NC

ON

NE

CTO

R

BB

W–B

( RH

D)

W–B

( RH

D)

J37

JUN

CTI

ON

CO

NN

EC

TOR

R–B

KD

Page 152: Lexus_GS300_GS430_service_manual 2

GS 430/300 (EWD423F)208

I OVERALL ELECTRICAL WIRING DIAGRAM

������������������������������������������������������������

������������������������������������������������������������

���������������������������������������������������������������

��������������������

12

34

37 G

S 4

30 /

GS

300

1

120A AM1

15A AM2

25A EFI

11

1

1

40A AM1

31J

AM

27

EFI RELAY

6

2

4A

M1

ST2IG

2

IG1

AC

C

2

1J1

61J

10A

GA

UG

E

1D4

Rig

ht s

ide

of th

eco

wl p

anel

CP

U

51D 1F

13

II

5A IGN

71G

11

21

35

11

Und

er th

e A

BS

&TR

C &

VS

C a

ctua

tor

EE

15IA

2

13E

E4

17E

8E43

6E

E5

BA

BA

BB

2C

1C

4A

7B

RH

ban

k of

the

cylin

der

head

EC

ED

LH b

ank

of th

ecy

linde

r he

ad

3E

A3

31D

15A ECTS

2E

1E EB3

A23

AA

2425

A22

A20

D27

D26

D35

D34

D33

D32

D

J36(

RH

D)

J 9(

LHD

)JU

NC

TIO

NC

ON

NE

CTO

R

J28(RHD)J 4(LHD)JUNCTIONCONNECTOR

C15

CR

UIS

E C

ON

TRO

L S

W[C

OM

B.

SW

]

J14(

LHD

)J3

4(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

BA

TTE

RY

J16(

LHD

)J3

9(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

J15(

LHD

)J3

6(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

I12

IGN

ITIO

N S

W

S12STOP LIGHT SW

C11CRUISE CONTROL INDICATORLIGHT[COMB. METER]

11

1

E

D

( LH

D) E

A22

AA

22

2

E

AA

1 A

54

D

E

E

B–L

B–Y

W

W–R

W–B

B–Y

B–R

W–B W–B

B–R

B–R

B–R

B–R

W–B

W–B

BR BR

B–L

BRBR

BR

R–YR–Y

W–B

W–B W–B

W–BW–BW–BR–L

B–Y

B–O B–O

B–Y

B–Y

B–Y

B–Y

B–Y

B–W

B–Y

B–W

B–Y

ETA

B–O

BR

W–R

W–L

MR

EL

BA

TTIG

SW

ST1

–V

PA

2V

PA

EP

AV

CP

AE

PTK

VP

TKV

TA2

VTA

+B1

VC

M+

+BE

01E

02E

03

See

Eng

ine

Con

trol a

ndE

ngin

e Im

mob

iliser

Sys

tem

<35

–6>

<35

–7>

E1

CC

SE

CE

OM

See

Eng

ine

Con

trol a

ndE

ngin

e Im

mob

iliser

Sys

tem

<35

–12>

13DD

Po

we

r S

ou

rce

Cru

ise

Co

ntr

ol

( 3U

Z–

FE

)

21D

See MultiplexCommunication System<1–8><2–8>

MP

X1

MP

X2 C

RU

ISE

RE

S/A

CC

SE

T/C

OA

ST

CA

NC

EL

J 5(

LHD

)J2

9(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

RAA

See ECT and A/TIndicator System<36–6>

3C

ME

01 W–B

EN

GIN

E A

ND

EC

T E

CU

E 2

AE

4,

CE

5,

DE

6,

E

JUNCTION CONNECTOR

BAJ 3 J 4,

1

12

7E

+BM

L–Y(LHD)V–Y(RHD)

6IA

2 V–Y

L–Y(LHD)V–Y(RHD)

L–Y

( LH

D) ,

V–Y

( RH

D)

1A

2A M–

GE

O1

BA

A

BB

A

BR

W–B

J49JUNCTIONCONNECTOR

J49JUNCTIONCONNECTOR

W–B

7IK

1

IA1

9( L

HD

)

( RH

D)

11K

11A

( LH

D)

( RH

D)

3IA

3

II11

( LH

D)

( RH

D)

(LHD)

BAJ27 J28, (RHD)

3II4IA

13

( RH

D)

( LH

D)

2II1ID

19

1II1ID

18

( LH

D)

( RH

D) Le

ftfe

nder

IFLe

ftki

ckpa

nel

A

B B

( LH

D)

( RH

D)

( LH

D)

( RH

D)

J18(

LHD

)J3

7(R

HD

)JU

NC

TIO

NC

ON

NE

CTO

R

(LHD)

W–B

( RH

D)

J32

JUN

CTI

ON

CO

NN

EC

TOR

C

( RH

D) C

Page 153: Lexus_GS300_GS430_service_manual 2

NOTICEWhen handling supplemental restraint system components (removal,installation or inspection, etc.), always follow the direction given in the repairmanuals listed above to prevent accidents and supplemental restraintsystem malfunction.

FOREWORD

This supplement provides information covering changes in

the electrical system specifications of the GS 430 / GS 300

which were made in Jul., 2000.

Applicable models: UZS161 Series

JZS160 Series

For information which is not mentioned in this manual, please

refer to the following Electrical Wiring Diagram Manuals:

Manual Name Pub. No.� LEXUS GS 300 Electrical Wiring

Diagram

� LEXUS GS 430 / GS 300 RepairManual Supplement

� LEXUS GS 430 / GS 300 New CarFeatures Supplement

EWD317Y

RM786E

NCF188E

All information in this manual is based on the latest product

information at the time of publication. However, specifications

and procedures are subject to change without notice.

En

glish

FrançaisE

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