1 IS 300 ELECTRICAL WIRING DIAGRAM - 2JZGARAGE is 300 electrical wiring diagram 1 p 1 1 1 1 2 1d 1 1o 2 acc ig1 ig2 st2 am1 ... m overall electrical wiring diagram 1 2 34 51h ... traction

2001 LEX

US

IS 300 (E

WD

413U)

M

1 2 3 43 421

1 IS 300 ELECTRICAL WIRING DIAGRAM

1

P

1111

1D2

1O1

2

ACC

IG1

IG2

ST2

AM1 4

6

8

7 AM2

8 EA1

IH Cowl sidepanel RH

1

1 1

1D4

7. 5ASTARTER

8 1K

EA12

6 EA1

1B

1 A

3 EA1

1K5

1D5

1 A

B1

B

2B

3B

L

IG

S

9 EA11D1

F

10AGAUGE

9 1K

BD

A

26 F

27 C

See Multiplex

Com

munication

System<

10–4>

P ower S ource Starting and Ignition Charging

1 2 1 2

2

9

2 1 2 1

1

6

W–L

B–L

W W–R

B–L

B

B–Y

G 2

B

A

B–Y

GENERATOR

W–B

, W–B

G 1

B–W

B

B–W B–WB–R

WW–L

B–L

W–R

B

B–R R–L

R–L

R–L

L–R

W–L

L–R

B–L

B

B–W

B–R

L–R

B–L

W–L

7. 5A ALT–S

120A ALT

20A AM

2

40A M

AIN

40A AM1

To Engine ControlModule<2–12>

STAR

TERR

ELAY

I12IGNITION SW

S 1 S 2,

STARTER

A B

ENG

INE C

ON

TRO

L MO

DU

LE

FC

E 4

E 7,

B–W

BATTERY

N

, J 2

J 1A

B

JUN

CTIO

N C

ON

NEC

TOR

RL

5 1

3 2MPX2

9 IA1

1

2I 2IG

NITIO

N C

OIL N

O. 1

I 3IGN

ITION

CO

IL NO

. 2

2

1 1

2

I 4IGN

ITION

CO

IL NO

. 3

1 N 1

NO

ISE FILTER(Ignition )

EA Front side of theintake manifold

To Engine Control Module<2–11><2–12>

2 EA2

2M8

2E52G8

To Data Link

Connector 3

<2–4>

To Com

binationM

eter<22–2>

3 7 6 5 4

8 1 2 10 9

B BB

B B–R G B

B–W

B–W

B–W

B–W

B–W

BR

GR

–B

B–R

B–Y

B–L

B–W B–W B–W B–W

I 1IGNITER

P 1PAR

K/N

EUTR

ALPO

SITIO

N S

W

GND

TAC

IN1 IN2 IN3 IGF

C2 C3 C1 +B

2001 LEXUS IS 300 (EWD413U)

M OVERALL ELECTRICAL WIRING DIAGRAM

12

34

51H

34

21

( Con

t. n

ext

page

)2

IS 3

00

25A

EFI

15A

ETC

S12

0AAL

T20

AAM

2

1

11

11

1

4

21D

62E

11O

12C

40A AM1

W–L

B

F15

FUEL

PU

MP

7. 5A OBD

7. 5

AIG

N

2A4

2H13

5 3

1 221

35

2

ACC

IG1

IG2

ST2

AM

14 6

7A

M2

1I

Cow

l sid

epa

nel R

HIH

51D

1

EFI

RE

LAY

12

2

21G

11

V

22

11D

21E

10A

GAU

GE

54 M BL

Left

quar

ter p

anel

LH

12E 2L

52B

5

BKC

owl s

ide

pane

l RH

IH

8

11

21

2

2A

A

1614

9

1

22

12

413

7

L–W

B–O B–Y

B–O

B–W

W–RW

B–RL–R

L–R

B–L

I12

IGN

ITIO

N S

W

BAT

TER

Y

B–Y

W

L–W

W

W–R

BAT

B–R

TS

B–R

TAC

W–B

SIL

B–O

B–Y

TC

B–Y

CG

B–O

R–L R–L

Po

we

r S

ou

rce

W–B

R–W

W

G–Y

L–R W–B

From Igniter<1–2>

W–B

W R–L

G–Y

R–W B–

R

V

B–R

J15

JUN

CTI

ON

CO

NN

ECTO

R

En

gin

e C

on

tro

l a

nd

En

gin

e I

mm

ob

ilis

er

Sy

ste

m

A B C ED G I J K L M

Fron

t flo

orpa

nel R

H

NB–

R

4 1K

2B4

2I7

2I2

B–R

2B11

B–R

B–R

CIRCUITOPENINGRELAY

B–R

9IA

1

C 9MALFUNCTIONINDICATOR LAMP[COMB. METER]

21

F12FUEL PUMP RESISTOR

FUEL PMPRELAY

13

33

24

33

B–O

G–R

F

G–W

G–W

G–W

G–W

G–W

G–R

L–R

G–R

L–R

W–B

CC

J16JUNCTIONCONNECTOR

W–B W–B

W–B

4IA

1

1EA

1

EBC

ente

r sid

e of

the

inta

ke m

anifo

ld

BRBR

BR

5SG

2E2

D 5

DAT

A LI

NK

CO

NN

EC

TOR

3

2A3

2A10

From ABS andTraction ECU<16–2>

W–L

W–L

15WFS

E LG

LGH

EA14

B–R

OW

–L

PB–

R

B–W

17 7

2001 LEX

US

IS 300 (E

WD

413U)

M

7 865

2 IS 300 (Cont’ d) (Cont. next page)

9 B 1 B 10 B 7 B 5 F 7 E 5 E 6 E 1 F 2 F 3 F

1

2

2

1

1

2

1

2

1

2

1

2

1

2

6 B 5 B11 B

2 IA1

1 2A

2E4

6 2D 1 2J

16 B

EA17

8 B

AD

F B F B9 IG1 8 IG1 10 IG1 7 IG1

21 IH1 9 IH1 10 IH1

24 A 25 A 11 E 3 E 12 E 4 E

20 F 19 F 8 F 7 F 30 F 18 F

21

17 F

3 1 3 1 3 1

I

3 4 2 1

4 2 2 4 2 4

H

G

F

D

C

M

L

K

Engine Control and Engine Immobiliser System

J

I

G

D

E

L–W

B–O

B–Y

B–O

B–W

W

R–L

G–Y

R–W

B–R

B–R

W W W R–L

G–Y

B–R

WW

R–W

B

W LG

P

B–O

B–Y

B–O

L–W

Y–G

W–G

R L G

R–W

L–R

B–R

B–R

B–R

B–R

B–R

B–R

B–R

R–W Y W R (*1 )

R–Y

Y–B

(*1 )(*1 )

(*1 )

(*1 )

BR W R

–WR

–W

B–R

BR

B–R

BR

W R–L

+B

BR

–Y

BR

B–R

B–R B–R B–R B–R

BR–W

BR

(*1)

B–R

(*1)

B–R

R–W

BR

B–R

* 1 : Shielded

JUN

CTIO

N C

ON

NE

CTO

R

BA

J 1J 2

,

From ABS

andTraction EC

U<16–3>

From C

enter AirbagSensor Assem

bly<17–3>

V 2

VSV (A

CIS )

V 4

VSV (E

VAP)

I 5INJEC

TOR

NO

. 1

I 6INJEC

TOR

NO

. 2

I 7INJEC

TOR

NO

. 3

I 8INJEC

TOR

NO

. 4

I 9INJEC

TOR

NO

. 5

T 2THROTTLE CONTROL MOTOR

C 2CAMSHAFT TIMINGOIL CONTROL VALVE

SIL W FC +B +B2

HT

OXR2

OX

HTR2

HT

OXR1

OX

HTR

HT

OXL1

OX

HTL

IGSW BATT MREL +BM ACIS PRG #10 #20 #30 #40 #50 CL+ CL– M+ M– GE01 OCV+ OCV–

B–R

E1

4 F

1

2

B–W

+B

B–R

I10IN

JECTO

R N

O. 6

#60

B–R

E1+BE1

C

B

A

11 2G

NB–R

W

FromBody ECU<10–16>

B–R

20 A

L–B

IMLD

FG–R

4 B

G–R

FPR

E 2 E 3,

ENGINE CONTROL MODULE

A B E 4, C E 6, E

To Security Indicator Light

[Com

b. Meter]<

11–3>

25 C

12 IA1

LGLG

WFSE

HLG

OW–L

PB–R

20 BC1

2

1

1 IC1

13 A

TBP

PP

B–RB

–RB

–R

V 8

VSV (P

ressureS

witching V

alve )


B

BB

H17

HE

ATED O

XYGEN

SEN

SOR

(Bank 2 Sensor 2 )

H11

HE

ATED O

XYGEN

SEN

SOR

(Bank 2 Sensor 1 )

H 9

HE

ATED O

XYGEN

SEN

SOR

(Bank 1 Sensor 1 )

IH120BB

J 7JUNCTIONCONNECTOR

BR–Y

B(*1)

8 C 26 A

3 1

2 4

B–R

BR

H10

HE

ATED O

XYGEN

SEN

SOR

(Bank 1 Sensor 2 )

HT

OXL2

OX

HTL2

E1+B

8 EA2 9 EA2

W G–B

W G–B

(*1 )

EA Front side ofthe intakemanifold

BR

BR

B–RB–RB–R

B–R

BR

R–W

B–RB–R

EW–L

IH22

E 7, F

B–RA

B–R

B–R

B–R

B–R

B–R

B–R

B–R

B–R

W–L

E 5, D



1112

109

2 IS

300

(C

ont’

d)

14E

18E

9E

2E

23E

24E

15E

16E

25F

13B

20B

14B

21B

15B

28C

27C

1J1

32E

102B

1H4

2H9

2B9

5C

16IA

217

IA2

18IA

2

21A

22A

23A

28F

27F

23F

F22

10F

17E

6F

B22

8E

21F

31F

1E11

F12

F13

F

EC

Left

fend

er a

pron

10EA

1

1

EA

From Igniter<1–3>

From ABS and TractionECU<16–4>

To ABS and TractionECU<16–4>

See MultiplexCommunicationSystem<10–4>

11

43

43

2

A A A A A

11

1

22

3

12

34

21

123

55

1

2

A A A A A

MPX

2M

PX1

NE

OEN

G–

ENG

+TR

C–

D

TRC

+IG

F

F

IGT3

G

IGT2

IGT

VPA2

VPA

VTA

2VT

AV

C

H

PSP

THW

I

E2

E03

E02

E01

MO

PSE

CM

OL

E1G

2N

E–N

EKN

K2KN

K1

CO

DE

RXC

KTX

CT

TC

* 1

: Shi

elde

d

E10ENGINE OIL LEVEL SENSOR

E11ENGINE OIL PRESSURE SW

K 3KNOCK SENSOR 2

K 2KNOCK SENSOR 1

E 8ENGINE COOLANTTEMP. SENSOR

T 9

TRA

NSP

ON

DE

R K

EY

AM

PLIF

IER

D 1

DAT

A L

INK

CO

NN

ECTO

R 1

BR

W–B

W–B

W–B

W–B W–B

BR

W–B

W–B

GR

W–B

GR

BR

L

G

LL

B–W

W

B

B–R

W–B

G

V

P

G

V

P

R–W R–W

R–W

B–Y

BR–W

B–R

CO

DE

RXC

K

G

P

L–B

W–G

R–Y

B–L

B–Y

B–R

GR–B

L–W

P–L

L–Y

( *1)

B–R

R–W BR B–R

En

gin

e C

on

tro

l a

nd

En

gin

e I

mm

ob

ilis

er

Sy

ste

m

L–Y

L–Y

BR

BR

BR

BR

BR

–W BR( *1)

( *1)

( *1)

( *1)

BR

( *1)

( *1)

( *1)

( *1)

BR

BR

BR

BR

BR

BR

R

G–Y

W–R

L–Y

L–YL–Y

V

VCV

TA1

VTA

2VC

VPA1

VPA2

GN

D

E2

+B

E2

TXC

T

AN

T2

R–W

AB

R–W

E1+B

From

Cen

ter

Airb

ag S

enso

rA

ssem

bly

<17

–3>

ANT1 TR

AN

SPO

ND

ER

KEY

CO

IL

EA

Fron

t sid

e of

the

inta

ke m

anifo

ld

A

BR

OIL TEMP.

OIL LEVEL

E 2

E 3

,

ENG

INE

CO

NTR

OL

MO

DU

LE

AB

E 4

, C

E 6

, E

A

J 4

JUN

CTI

ON

CO

NN

EC

TOR

10ATo Unlock Warning

SW<10–15> KSWB–Y

C 3CRANKSHAFTPOSITION SENSOR

C 1CAMSHAFTPOSITION SENSOR

12

21

W–B

TC

11

( *1)

C

BB

B

R–W

From ABS andTractionECU<16–2>

J 3

JUN

CTI

ON

CO

NN

ECTO

R

R–W

Fron

t sid

e of

the

inta

ke m

anifo

ldEB

Cen

ter s

ide

of th

ein

take

man

ifold

( *1)

( *1)

B EW

–L

W–L

TS

16

9CFrom FAN NO. 1, NO. 2

Relay and Diode(A/C)<23–4>L–B

FAN

14IG

1B–Y

9A

EOM W–BW–B

9F

ME0

1 BRBR

E 7

, F

EA27

IDC

owl s

ide

pane

l LH

A

ECLe

ftfe

nder

apro

n


R–W

W–B

1G5

1A2

W–G

P 2POWER STEERING OILPRESSURE SENSOR

A AC B

IC13

T 3THROTTLE POSITION SENSOR

A 9ACCEL POSITION SENSOR

18C

32 PT

NKP–G

L–Y

V 7VAPOR PRESSURE SENSOR

1

BR

4IC

15

IC1

EA2

3

BRBR

L–Y

L–Y

P–G

J 1

J 2

,

JUN

CTI

ON

CO

NN

ECTO

R

AB

6CST

P

2CST

A

13C

ACM

G

From Stop LightSW<6–4>

From Park/NeutralPosition SW<1–1>

From A/C COMP Relay<24–2>

12D

CC

VY–G

19E

EVGL

10E VG

G–B

22E TH

AL–B

12

BR

B–R

B–R

B–R

A

M 1MASS AIR FLOW METER

V 3VSV(Canister Closed Valve)

15

43

2

BR

–W

G–W

B

L–W

GN

D

VOU

TV

CVC

CPT

NK

E2

E 5

, D

2001 LEX

US

IS 300 (E

WD

413U)

M

1 2 3 43 421

3 IS 300

1

20A ECU

–B1

120A ALT40A AM

1

11

1D2

1

2

3

4

1

7. 5A DR

L NO

. 1

1

15A H–LP R

LWR

15A H

–LP L LWR

2

ACC

IG1AM1 4

1

1 1 1

ECLeft fender apron

1 1O

2F11A4

1D1 2M6

2M32F2

2F3

2

22

5

2M4

* 1 : Front Fog Light SW

1G5

1A1

IDCowl sidepanel LH

ECLeftfenderapron

P ower Source Headlight

2

1 2

1 1 1 11

9 71

7

1

2 1

2 2 2 22

8

11

AA W–B

WW

R–L

R

B–L

R–Y R

W–G

R–W

L–YR–L

W–R

B–R

R–L

C 9

HIG

H B

EAM IN

DIC

ATO

RLIG

HT[C

OM

B. M

ETER

]

4

40A M

AIN

10A H

–LP L UP

R

10A H–LP

R U

PR

7. 5A ECU

–B2

10A ECU

–IG

HE

AD LP R

ELAY

BATTERY

I12IGNITION SW

D 6DAYTIME RUNNINGLIGHT RELAY(Main)

C11COMBINATION SW

HI

DRL +BIG

OFF

TAIL

HEAD

LOW

HIGH

FLASH

ON

From FR FOGRelay<7–3>

Y

To Theft DeterrentECU<11–4>


CHG–

From C

ombination

Meter<

22–5>

L–R

5

LIGH

TC

ON

TRO

LSW

L–W

DIM

MER

SW

2

1

*1OFF

BFG LFG HL HF HU H T EL

30A DR

L NO

. 2

1

2

1

1

2

3

4

3 3

3 3

B

IH Cowl sidepanel RH

1

2

H 7

HE

ADLIG

HT LH

(High )

1

2

H 8

HE

ADLIG

HT R

H(H

igh )

1710

W–R

Y–R

PKB

To Parking B

rakeS

W<

22–4>

4

16

W–B

6

E

1

D 4DAYTIME RUNNINGLIGHT RESISTOR

R–L

L–Y

R–B

R

L–R

R–L

7 IA1

L–Y

8

R–L

2F9

L–Y L–YIA119 1 3

2

D 8DIODE(Headlight Cleaner)

C C

R–L

R–L

2

H

R–L R–L

R–W

From Headlight BeamLevel Control ECU<8–2>

From Headlight CleanerControl SW<7–3>

B

B

J 6JU

NC

TION

CO

NN

EC

TOR

B–R

C C


2F7

2L52B5

A

A

BR

BR

BKFront floorpanel RH

C

CJ16JUNCTIONCONNECTOR

W–B

W–B

W–B

W–B

B

DIM

MER

RELA

Y

R–L

13

See Automatic LightControl System<11–2>

1

2 2

1

1 B 3 B 2 A

2 B 4 B 1 A 5 A

3A

2M1 2I3

J 7JU

NC

TION

CO

NN

ECTO

R

H 6

HEAD

LIGH

T CO

NTR

OL EC

U R

H

H 5

HE

ADLIG

HT C

ON

TRO

L ECU

LH

D 2

A

DAYTIM

E RU

NN

ING

LIGH

T RELAY N

O. 3

D 3

B

DAYTIM

E RU

NN

ING

LIGH

T RELAY N

O. 4

3

IND

R–B

R–B

R

R–W

R–W

R–B

R–L

R–Y

R

R–W

W–B

W–B

W–B

W–B

W–B

R–L

R–W

R–L

R–W

W–BW–B W–B

2

RR



12

34

81H

Cow

l sid

epa

nel R

HIH

W–G

34

21

4 IS

300

1

B

15A

TUR

N–H

AZ12

0AA

LT

1

IG

1

LR

1D2

40A

AM

1

1O1

10A

GA

UG

E

E

2

ACC

IG1

AM1

4

1D1

1K1

1A10

1L3

1A7

1A8

23

1

1K7

2A2

1E6

1I8

1E4

1I10

1K2

12

12

1823

56

12

12

56

EC

Left

fend

erap

ron

BL

Left

quar

ter

pane

l LH

Po

we

r S

ou

rce

Tu

rn S

ign

al

an

d H

az

ard

Wa

rnin

g L

igh

t

L–R

W

W

W

B–L

W

W

G–W

G–W

P–G

G–Y

W–B

G–B

G–Y

W–B

W–B

W–B

W–B

G–B

G–Y

G–Y

G–B

G–B W–B

W–B

BATT

ER

Y

I12

IGN

ITIO

N S

W

C 9

TUR

N S

IGN

AL

IND

ICAT

OR

LIG

HT

[CO

MB.

MET

ER]

R 7REAR TURN SIGNAL LIGHT RH[REAR COMB. LIGHT RH]

R 5REAR TURN SIGNAL LIGHT LH[REAR COMB. LIGHT LH]

F 7FRONT SIDE TURNSIGNAL LIGHT LH

F 8FRONT SIDE TURNSIGNAL LIGHT RH

FLSH

REL

AY

A

12

1

2

48

56

A

211

7

G–Y

2

To Body ECU<10–16> H

AZ

LH RH

TLTR

TB

ELE

R

LHR

H

1G5

IDC

owl s

ide

pane

l LH

LL 3

2H11

2A6

G–Y

W–B

F10FRONT TURNSIGNAL LIGHT RH

F 9FRONT TURNSIGNAL LIGHT LH

W–B

AJ1

5JU

NC

TIO

NC

ON

NE

CTO

R

EC

Left

fend

erap

ron

AJ

5JU

NC

TIO

NC

ON

NE

CTO

R

W–B

C11

TUR

N S

IGN

AL

SW[C

OM

B. S

W]

1B

14A 2I

1

2B5

2L5

IHC

owl s

ide

pane

l RH

BK

Fron

t flo

orpa

nel R

H

CC

HA

ZD

GN

DG–W W–B

W–B W–B

W–BW–B


HAZARD SW[A/C CONTROL ASSEMBLY]

BAA12 A13,

1A2

W–B

W–B

W–G

W–B

W–B

2001 LEX

US

IS 300 (E

WD

413U)

M

1 2 3 43 421

5 IS 300

1

2

120AALT

1

1O1

1

2

3

5

1F2

7. 5APANEL

1E5 1F5

6

3

2

3

6

1

4

1

4

1

2

1

1

2

11

12

1

2

1

2F7

2B5 2L5

IHCowl sidepanel RH

BK

Power Source Illumination

1

A A A A A A A A

A A A A A A A

G

WB–L

GG GG G G G G G GG

W–G

W–G

W–G

W–G

W–G

W–G

W–G

W–G

W–G

BRBR

W–B

W–G

T 8A/T SH

IFT POS

ITION

ILLUM

INATIO

N[TR

ANSM

ISSIO

N C

ON

TRO

L SW

(L–2 )]

H16

HEA

DLIG

HT C

LEAN

ER

SW

E12ELE

CTR

ON

ICA

LLY CO

NTR

OLLE

DTR

ANSM

ISSION

PATTER

N SE

LECT SW

S 3SEAT H

EATER

SW(D

river’s S

eat )

S 4

SEAT H

EATER

SW(Front Passenger’

s Seat )

A27ASH

TRAY

ILLUM

INA

TION

C 8

CIG

ARETTE LIG

HTE

R ILLU

MIN

ATION

A12A/C

CO

NTR

OL ASS

EMB

LY

G 3

GLO

VE BO

X LIG

HT

TAIL RELA

Y

See Taillight and

Stop Light S

ystem<

6–1>



BATTERY

22

AAAAA

1R 4

RH

EOS

TAT

1A2

1G5

IDCowl sidepanel LH

W–B

3 2

W–G

W–B

G

W–G

G

G G G

Front floorpanel RH

A

A

A

G

A

2

3

T 7TR

AC O

FF SW

12

2

R 2

RAD

IO AN

D P

LAYER

C 9

CO

MBIN

ATIO

N M

ETER

ILLUM

INA

TION

[CO

MB. M

ETER]

C

C

W–B

W–B

A

EC Left fenderapron

A W–B

W–G




E ILL–

T



12

34

34

21

6 IS

300

TAIL

REL

AY

11

21

53

10A

TAIL

11O

1F2

1H13

121K

2 1

2 1

2B1

2H6

GG

ECLe

ft fe

nder

apro

nIH

Cow

l sid

epa

nel R

H

61K

2

ACC

IG1

2

AM1

4

1D1D

11I

61E

2

17A

6B

5IB

1

91K

1K3

1F7

71G


To Shift LockControl ECU<21–4>

1I12

1F3

AF

G–W

G–W

12

12

2B

F1

1B

F1

BL

Left

quar

ter

pane

l LH

513

523

12

21

DB B

BBA 1G

6

1I11

1I3

54

54

BL

Left

quar

ter

pane

l LH

2

2

C

120A ALT

AA

1

119

21 2

C

1

1 34

87

GN

DT–

ST–

HS

–

L–R

W WW

R–L

G–R

W–B

W–B

AA

T+IL

IGS

T+

B–LW

G–B

G–B

V–G

R–L

G–R

W–B

W–B

W–B W–B

W–B

G

G–W

G–B

G–W

G–Y

G–Y

G

G–W

G–Y

W–B

W–B

W–B

R–B

R–B

R–BR–BR–L

R–L

G–W

W–B

W–B

G–R

L–R

R–LG–R

G–W

L 3

LIG

HT

FAIL

UR

E S

ENS

OR

F 4FRONT PARKING LIGHT RH

F 3FRONT PARKING LIGHT LH

L 1LICENSE PLATELIGHT LH

L 2LICENSE PLATELIGHT RH

N 3NOISE FILTER(Stop Light)

H19HIGH MOUNTEDSTOP LIGHT

R 5BACK–UP LIGHT LH[REAR COMB. LIGHT LH]

R 7BACK–UP LIGHT RH[REAR COMB. LIGHT RH]

Po

we

r S

ou

rce

Ta

illig

ht

an

d S

top

Lig

ht

Ba

ck

–U

p L

igh

t

STOP

J15

JUN

CTI

ON

CO

NN

ECTO

R

J 1

J 2

,

JUN

CTI

ON

CO

NN

ECTO

R

AB

J 1

J 2

,

JUN

CTI

ON

CO

NN

ECTO

R

AB

G–B

40A AM1

To A

BS

and

Trac

tion

EC

U<

16–3

>

15A STOP

10A GAUGE

BATTERY

A

V–G

R–L

R–L

G–B

S 8

STO

P LI

GH

T SW


STOP

I12

IGN

ITIO

N S

W

1I9 2

BE1

1B

E1

G–B W–B

23

P 1

BAC

K–U

P LI

GH

T SW

[PAR

K/N

EU

TRAL

PO

SITI

ON

SW

]

REAR LIGHTSWARNING LIGHT[COMB. METER]

BAC 9 C10,

To Theft DeterrentECU<11–4>

R–W

2B6

2 1

G

F 6FRONT SIDE MARKERLIGHT RH

2 1

W–B

F 5FRONT SIDE MARKERLIGHT LH

W–B

DD

D


2B5

2L5

2B3

BKFr

ont f

loor

pane

l RH

C C


W–B

W–B

W–B

W–B

BB

BB

B

SIDEMARKER

TAIL

R 5REAR COMBINATIONLIGHT LH

R 7REAR COMBINATIONLIGHT RH

1

GTAIL

R 8REAR COMBINATIONLIGHT RH

324

G

G–W

W–B

STOP

TAIL

R 6REAR COMBINATIONLIGHT LH

324

G

G–W

W–B

STOP

TAIL

J15

JUN

CTI

ON

CO

NN

ECTO

R

W–B

W–BW–B

G–B

G–B

W–B

W–B

W–B

AA

AB

A

A

AB

B B B

AA

J14

JUN

CTI

ON

CO

NN

EC

TOR

J13

JUN

CTI

ON

CO

NN

ECTO

R

G G

G


G

G–W G–B

G–B

G–W

G–W

G–WG

A

RH

LH

2001 LEX

US

IS 300 (E

WD

413U)

M

1 2 3 4

Left fenderapron

EC

3 421

7 IS 300

40AMAIN

4

3

2

1

1

HE

AD LP

RE

LAY

1

1 1

1

1

15AFR

FOG

1 2C

1

22

2F8

2

1

5

3

2B7 2B2

BATTERY

B–L

FR FOGRELAY

F 2FR

ON

T FOG

LIGH

T RH

F 1FR

ON

T FOG

LIGH

T LH2A9

1

2

1

2

Cowl sidepanel RH

IH

Power Source

W

R–Y

W

R–Y

R–Y

W–B

Front Fog Light

15AH

–LP L LW

R

To Com

bination SW

<3–4>

L–W

1

2

1

2A5

2B5

2L5C

C

J16JU

NC

TION

CO

NN

ECTO

R

BK Front floorpanel RH

W–B

W–B

W–B

W–B

W–B

R

R

See Headlight System

<3–1>

30AH–LPCLN

1

2

1

120AALT

1

1D2

1O1

2

ACC

IG1AM1 4

2

1

40AAM1

WW

W

I12IGNITION SW

15AWASHER

1D1

1G11

H 3HEADLIGHT CLEANERCONTROL RELAY

4

1

2

1

M

EC Left fenderapron

1 5 4

3 2

L

W–G

L–RL–R

R–W

W–B

W–L

W–B

W–B

W–B

H 4

HEAD

LIGH

TC

LEAN

ER M

OTO

R

E MTR

IG PB H

H16HEADLIGHTCLEANERSW

9 IA2

W–G

To Diode(Headlight Cleaner)<3–3>

Headlight C leaner

L–R



12

34

8 IS

300

40A

AM

1

1O1

1D2

2

ACC

IG1

AM1

4

1D1

10A

GA

UG

E10

AEC

U–I

G

1E2

1A11

17A

7B

H 1

HEA

DLI

GH

T BE

AM L

EVEL

CO

NTR

OL

AC

TUAT

OR

LH

H 2

HEA

DLI

GH

T BE

AM

LE

VEL

CO

NTR

OL

ACTU

ATO

R R

H

H18

HEI

GH

T C

ON

TRO

L S

ENS

OR

REA

R L

H

H15

HE

ADLI

GH

T B

EAM

LEV

EL

CO

NTR

OL

ECU

B–R

L–R

L–Y

L

Y

L–W

B–R

R–B

R–Y

R

R–GR–G

R

R–Y

R–B

B–R

L–W

Y

L

L–Y

B–R

R–L

W–R

G–B

G–O

G–W

R

Y

B

R–W

W

B–R

114

1216

313

415

2

54

16

35

41

63

75

118

920

MR

CO

M( B

1)R

H1(

S1)

RH

2(S

2)R

H3(

S3)

RH

4(S

4)LH

4(S4

)LH

3(S3

)LH

2(S

2)LH

1(S

1)M

LCO

M( B

1)

SHB

SHR

LSH

G

12

3

BAT

TER

Y

I12

IGN

ITIO

N S

W

To Combination SW<3–4>

From ABS and Traction ECU<16–4>

Po

we

r S

ou

rce

He

ad

ligh

t B

ea

m L

ev

el

Co

ntr

ol

E1

B2

SPD

RSB

RSH

RL

SGR

IGLH

TLH

ELH

+LH

–R

HT

RH

ER

H+

RH

–

120A

ALT

11

2 1

B–LW

2 1

18 WN

G

HEADLIGHT BEAMLEVEL CONTROLWARNING LIGHT[COMB. METER]

BAC 9 C10,

B–R

R–L

B–R

1H3

1A4

2I10

2H10

BB


B–R

B–R

6IA

25

IA2

14IA

24

IA2

13IA

213

IG1

2IG

16

IG1

1IG

15

IG1

1A2

1G5

IDC

owl s

ide

pane

l LH

ECLe

ft fe

nder

apro

n

AA

W–B

W–B W–GJ

5JU

NC

TIO

NC

ON

NE

CTO

RH

12H

EIG

HT

CO

NTR

OL

SEN

SOR

FRO

NT

LH

B–O

W–L

B–L

B–R

W–L

B–L

617

10

SH

BSH

FLS

HG

21

3

SBF

SHFL

SG

F

3B

D1

2B

D1

1B

D1

8IB

19

IB1

20IB

111

IA2

10IA

21

IA2

G–B

G–O

G–W

2001 LEX

US

IS 300 (E

WD

413U)

M

1 2 3 4

A

8 2

1F9 5

1G

+1

WF

OFF

7

3 421

9 IS 300

HornWiper and WasherPower Source

2

ACC

IG1AM1 4

1D2

40A AM1

1O1

11

1

1

2

M

15AWASHER

25AWIPER

1D1

1G4 1F6 1G8

IA11

IA18

IA120

ID

17

L–B

16

G–B

11

2

1

3

5

2 2

2 2

6

1

G W

G W

LL–Y

L–R

L–R

G

1

2

B–L

21

12

L–Y 1 4 5 3

L–B

L–R

L–W

L–B

W–B

L–W

L

G

2

G–W

G–W G–B

G

G–B

I12IGNITION SW

BATTERY

W 1

WAS

HER

MO

TOR

10A H

OR

N

120A ALT

F11FRONT WIPER MOTOR

HORNRELAY

H14HORNRH

H13HORNLH

1

Cowl sidepanel LH

+1 EWMISTB1INT2INT1+S+2+B

OFF

MIST

INT

MIST

LO

MIST

HI

MIST

WASHER

WIPER RELAY

M

A

L–R

L–R

L–W

C13FRONT WIPER AND WASHER SW[COMB. SW]

EC Left fenderapron

W–B

W–BJ 5JUNCTIONCONNECTOR

W–B

W–G

L

L

L

+2 E S

B

1G3 2M5

1F1 2G7 2I11

C12

HO

RN

SW

[CO

MB. SW

]

To Theft Deterrent

ECU

<11–4>

G–W

OFF

INT

LO

HI

WASHER



12

34

34

21

( Con

t. n

ext

page

)

1

120A

ALT

20A

ECU

–B1

1

MP

X+

11

BAT

TER

Y

2M6

7. 5

AD

OM

E

2K7

2H7

2H5

10A

MP

X–B

1B11

1I7

1D2

1O1

21

53

7. 5

APA

NEL

1F52

B

1F2

21

53

52G

42H

2C1

2G4

2L4

2K6

3ID

1

1

10A

GAU

GE

1D

2

AC

C

IG1

AM

1

3 4

41B

1H11

10A

RAD

ION

O. 2

1D6

10A ECU–IG

1G1

16IA

1

1A

8B

10A

5B

JIHGFEDCBA

Po

we

r S

ou

rce

Mu

ltip

lex

Co

mm

un

ica

tio

n S

ys

tem

G

L–B

B–L

L–B G L

L–W

L–Y

L–R

R–Y L–Y

L–Y

P–G

B

R L–R

WW

R

L–R

O

O

O

L

L

L

P–G

W

L–B

G

W

W

G

L–BR–L

B–L

L–Y

B–L

L–Y

R–Y

L–R

L–Y

L–W

L

L–RR–L

20A D FR P/W

20A DOOR

40A AM1

20A D RR P/W

20A P RR P/W

20A P FR P/W

BSU

BTA

ILAC

CIG

MP

X1M

PX2

14

73

1

21

2

20S

ee T

aillig

ht a

ndS

top

Ligh

t Sys

tem

<6–

1>

C 9COMBINATION METER

TAILRELAY

P/W RELAY

I12

IGN

ITIO

N S

W

A/C CONTROL ASSEMBLY

BAA12 A13,

BA

BO

DY

ECU,

B 6

B 5

MPX

–

MP

X1

MP

X2

MPX

+M

PX–

P–S/

B

21

1IB

2

L–Y

12

G

2827

E 4ENGINE CONTROL MODULE

7 8

T 6THEFT DETERRENT ECU

MP

X2

MP

X1

10

IS 3

00

21IH2

9

P–G B 8

BUCKLE SW RH ANDSEAT BELT WARNINGOCCUPANT DETECTION SENSOR

3

4BH

1 P–G(*1)P–G(*1)

P–G(*2)

P–BFrom Center AirbagSensor Assembly<17–3><17–4>

BK

Fron

t flo

orpa

nel R

H

2BH

1W–B(*1)

W–B(*1)

W–B(*2)

IG

13A

2H10

2I5

1H3

B–R

B–R

* 2

: w/o

Pow

er S

eat

* 1

: w/ P

ower

Sea

t

2001 LEX

US

IS 300 (E

WD

413U)

M

7 865

(Cont. next page)10 IS 300 (Cont’ d)

J

I

H

G

F

E

D

C

B

A

2

1

4 BG1

2 BG1

A3 12 B 11 B

II16 8 ID1

2

1

2

1

2

1

8 1L 1N7

1L11B1

1N51N21H6

Roof panelBI

B18 17 B

2 II1 II13

M21 1 2

M

12 BB1BB111

B34 B

L–Y

L–Y

R–Y

L–R

L–Y

L–W

L

G

L–B

B–L

BA17BA16BB17BB16

IH283 IH2

A10 9 A

11 BA1 BA112

M12

I

H

G

F

E

D

B

C

AB–L

R–Y

L–B

L–R

L–Y

G

W–B

W–B

W–B

M ultiplex Communication System

DBKL PCLP DCLP ILE PD PU RRD RRU RLD RLU

PCT D U E PCT D U E PCT D U

L–Y

B–L

L–B

G

L

L–W

L–Y

L–R

R–Y

SD SU SD SU SD SU

2 2 2

4 2 5

8

3 4 2 5 3 4 2 5

1 11

1 6 1 6 1 6

R R–G

R–W

R–G

L–Y

R–B

L–Y

R–W

W–B (*1 )

W–B

(*1 )

L–Y

L–Y

L–Y

L–W

Y–B

G–Y

R–W

G–B

R

G

R–W

L–W

Y–B G

R–W

G–B

R

L G R

W–B

L–W G R

W–B

L–Y G R

W–B

W–B

L–Y

W–B

L–WW–B

W–B

W–B

W–B

V 5VA

NITY LIG

HT LH

V 6VA

NITY LIG

HT R

H

I13IN

TERIO

R LIG

HT

B 7

BU

CKLE SW

LH

P 6POWER WINDOWCONTROL SWFRONT RH

P 8POWER WINDOWCONTROL SWREAR RH

P 7POWER WINDOWCONTROL SWREAR LH

P11POWER WINDOWMOTOR FRONT RH

P13POWER WINDOWMOTOR REAR RH

P12POWER WINDOWMOTOR REAR LH

BA

BODY ECU

, B 6B 5

3

E

I11IG

NITIO

N K

EYC

YLIND

ER

LIGH

T

D10

DO

OR

CO

UR

TESY

LIGH

T FRO

NT

LHD11

DO

OR

CO

UR

TESY

LIGH

T FRO

NT

RH

* 4 : w/o Moon Roof* 3 : w/ Moon Roof* 2 : w/o Power Seat* 1 : w/ Power Seat

DO

OR

OFF

ON

L–YL–Y

L–Y

1L5

21 IB1

L–Y

L–Y

Front floorpanel LH

BJ

W–B

(*2 )W

–B (*2 )

C

C

J13JU

NC

TION

CO

NN

ECTO

R

From C

enter Airbag

Sensor Assembly

<17–3>

C

P–B

(*1 )

P–B

(*2 )

P–B

(*1 )

P–B

P–B

4

1

W–B

M 3

PER

SON

AL LIGH

T[M

OO

N R

OO

F CO

NTR

OL SW

]

L–Y(*3)

L–Y(*4)

(*3 )

W–B

(*4 )W

–B(*4 )

W–B

(*3 )

1

2

P 5PE

RSO

NAL LIG

HT

2001 LEX

US

IS 300 (E

WD

413U)

M O

VE

RA

LL ELE

CT

RIC

AL W

IRIN

G D

IAG

RA

M

11 12109

(Cont. next page)10 IS 300 (Cont’ d)

I

H

G

F

E

D

B

C

AB–L

R–Y

L–B

L–R

L–Y

G

W–B

W–B

W–B

1B51H7

M D

M

W–B

Cowl sidepanel LH

ID

MM M

1B101B81N6 1B9 1H10 1H9 1I1 1I5

2L2 2L1 2K1 2K2

2H12H2

3 BB1 4 BB1

BB18

3 BA1 4 BA1

8 BA1

15 BC1

4 A

9 BB1

9 BA1

BLLeft quarterpanel LH

C

D

E

G

I

A

M ultiplex Commun ication System

R–G

L–Y

G

W–B

W–B

BECU BCTY MPX3 ACT+ ACT–

BDM DCTY TX

PW PWRPWL D U LMT PLS SGND KL KUL LSWD

4 1 2 20 8 13 12 11

W–B

6 15 10

2

2 11 6 9 10

5 16 18

2 1 4 3 5

4 3 1 5 6

P 9POWER WINDOW MASTER SW

P10POWER WINDOW MOTOR FRONT LH

D20DOOR LOCK MOTOR, DOOR KEY LOCK ANDUNLOCK SW ANDDOOR LOCK DETECTION SWFRONT LH

To Moon RoofControl ECU<12–2>

R–Y

R–Y

B–L

L–B

L–R G R

W–G

W

BR

–W

G–R

G–B

L–B

R–G

Y–R

G–Y

W–B

G–Y

R–W

W–B

W–B

W–B

G

L–Y

W–B

W–B

L–R

LSR

1 2

C

4 1 2 4 3 4 1

D

A

3 3 2

D D

A

G–Y

R–W

L–R

G–Y

R–W

G–Y

R–W

L–RL–R

L–RL

W–B

W–B

W–B

W–B

D19DOOR LOCK MOTORAND DOOR LOCKDETECTION SWREAR RH

D17DOOR LOCK MOTORAND DOOR LOCKDETECTION SWFRONT RH

D18DOOR LOCK MOTORAND DOOR LOCKDETECTION SW REAR LH

B 5 B 6,

BODY ECU

A B

LIMIT S

W

PULSE

SEN

SOR

LOC

K

UN

LOC

K

LOC

KD

ETEC

TION

LOC

KD

ETEC

TION

LOC

KD

ETEC

TION

LOC

KD

ETEC

TION



L–R

L–R

G–Y

R–W

G–Y

R–W

W–B

W–B

D


1L10

5 1G

EC Left fender apron

W–G

W–BCA

AJ 5JUNCTIONCONNECTOR

G–Y

R–W

14 BC1

L–R

W–B

2 1B1B7

GND

12

W–B

7 1L

E

9

W–B

W–B

FW–B

1A2

BW–B W–B

W–G

W–B

J16JU

NC

TION

CO

NN

ECTO

R

14 B

LSWP

5 II1

L–R

5 ID1

L–B

L–R

20

ACTD

B

CC

BKFront floorpanel RH

W–B

W–BH

2001 LEX

US

IS 300 (E

WD

413U)

M

1613 1514

10 IS 300 (Cont’ d)

C

D

E

G

I

A1 A2

3

1

2

4 2

1

8 A 7 A

A

19 B

2F7

2K54 2K 2B5 2L5

1

2

6 B

1 1 1 1

10 B B1 13 A 14 A

12 IH2

8 B 6 A 5 A

M ultiplex Commun ication System

L–Y

W–B

L–Y

G

W–B

W–B

W–B

PRG RDA TR+ LGCY GND2 KSW PCTY DCTY RCTY DFG HAZ OBD2 FE FR

E +B

PRG RDA

3 2

B

AA

D

1 5

B

D D

A

2

B

R–B

GR

–L

L–W

R–Y

R–Y

R

W–B

L–Y

W–B

G L–YL–Y

W–B

W–B

W–B

W–B

W–B

W–B

W–B

B–YB

–Y

G–W

R–B

R–G

R–W

R–B

R–G

R–W

R–W

W

W 3

WIR

ELESS D

OO

R LO

CK

CO

NTR

OL R

ECEIVE

R



L 6LU

GG

AG

E CO

MP

ARTM

ENT

DO

OR

OPEN

ER

RELAY

L 4LU

GG

AG

E CO

MP

ARTM

ENT

DO

OR

CO

UR

TESY SW

AND

OPEN

ER

MO

TOR

L 7LU

GG

AG

E CO

MP

ARTM

ENT

LIGH

T

D13

DO

OR

CO

UR

TESY SW

FRO

NT R

H

D12

DO

OR

CO

UR

TESY SW

FRO

NT LH

D15

DO

OR

CO

UR

TESY SW

RE

AR R

H

D14

DO

OR

CO

UR

TESY SW

RE

AR LH

U 1

UN

LOC

K WA

RN

ING

SW

From E

ngine Control

Module<

2–12>

From R

R D

EF Relay

<21–1>

From FLSH

Relay

<4–3>

To Data Link C

onnector 3<

2–5> See Com

bination Meter S

ystem<

22–3>

5

J12JU

NC

TION

CO

NN

ECTO

R

G–Y

B 5 B 6,

BODY ECU

A B

IHCowl side panel RH

B–Y

1

M

FW–B

BW–B

HW–B

W–B

W–B

UN

LOC

K

LOC

K

3

6 5

9 B

PMUL

G–B

7 B

PML

G–R

17 II1 18 II1

19 II1

G–B

G–R

BR

BRBR

A

A

J 7JU

NC

TION

CO

NN

ECTO

R

D16

DO

OR

LOC

KC

ON

TRO

L SW

RH

1

2

D 9

DIO

DE

(Luggage C

ompartm

ent Light )

R–Y

From Theft D

eterrent ECU

<11–3>B

–Y

A A A

A


16 BC1

R–W

B16

1

L

B15

L–O

2

K 1

KEYLE

SS BU

ZZER

11 IG1 3 IG1

L

L–O

L–O

L–O

BU

ZZER

BZR2 BZR



12

34

34

21

11

IS 3

00

1

L–R

120A

ALT

20A

EC

U–B

1

11

1D2

40A

AM

1

1O1

10A

ECU

–IG

2

ACC

IG1

AM1

4

10A

MPX

–B

1D1

2M6

1A4

2D5 1

B10

A19

AB

78

B1

A2

A4

B

9A

20A

21A

5IE

14

IE1

3IE

1

13A

12A

14A

OFF

T

HEA

D

TAIL

AUTO

HA

EL

B12 18

A

8B

4A

A5

6IA

111

IB1

21

12

ECLe

ftfe

nder

apro

n

BL

Left

quar

ter

pane

l LH

22A 1A

2

1G5

1A1

IDC

owl s

ide

pane

l LH

ECLe

ft fe

nder

apro

n

B–L

W

B

R–Y

B–Y

R–L

R–W

G–W

R

Y

BR

R

Y

BR

R

R–Y

G–Y

L–B L–B

L

B–W

W–B

L–B

L

B–W

W–B

W–B

W–B

W–G2

1

2

14

3

A

12

1

CLT

BC

LTS

CLT

ET

HA

IND

DSW

HLU

GE

+B2

IGK

SWM

PX1

MP

X2H

EAD

TAIL

HO

RN

Po

we

r S

ou

rce

Th

eft

De

terr

en

t

T 5

T 6

,

THEF

T D

ETER

REN

T E

CU

AB

CLT

B


CLT

SC

LTE

From Engine Control Module<2–6>

BAT

TER

Y

A28

AU

TOM

ATIC

LIG

HT

CO

NTR

OL

SEN

SOR

I12

IGN

ITIO

N S

W

, C10C 9 A B

SECURITY INDICATORLIGHT[COMB. METER]

To Unlock WarningSW<10–15>

J15

JUN

CTI

ON

CO

NN

ECTO

R

From HEAD LPRelay<3–3>

From TAIL Relay<6–1>

From HORN Relay<9–4>

E 9ENGINE HOODCOURTESY SW

L 5LUGGAGECOMPARTMENT DOORKEY UNLOCK SW

LIGHT CONTROL SW

Au

tom

ati

c L

igh

t C

on

tro

l a

nd

Lig

ht

Au

to T

urn

Off

2F4 11

A

W–R

+B1

7. 5

AEC

U–B

2

10A

HO

RN

1

G

1 2

BB

L–R

B–R

B–R

J 6

JUN

CTI

ON

CO

NN

ECTO

R

B

3B SH

G

G

16IG

1G

1413

12

C11

CO

MB

INA

TIO

N S

WW

–B16

AA

J 5

JUN

CTI

ON

CO

NN

ECTO

R

W–B

W–G

2I9

2G10

2M7

2B

11IA

1G–Y G–Y

SH–

1

T 1THEFT DETERRENT HORN

W

W–B

W–B

W–BW–B

2001 LEX

US

IS 300 (E

WD

413U)

M

1 2 3 43 421

12 IS 300

1

IG

10ARADIONO. 2

120AALT

1

1D2

40AAM1

30AS/ROOF

1O1

1N8

+B

10AECU–IG

2

ACC

IG1AM1

3

4

1D1

1N3

Roof panelBI

1D6

1B12

12 ID1 ID113

M M

4 II1 13 II1

11 ID1

12 II1 MM

ID Cowl sidepanel LH

1G5

1L10

Power Source M oon Roof Remote Control M irror

2

2

4 3 10

5 2 6 3 4

1

C

MHLMVL

4

3

M+

5 4 3 5

1

1

MHR

5 6

MVR

1 2

M+

7 8

P–B

C

3 6 10

UP

2

CLOSE

9

OPEN

J11JU

NC

TION

CO

NN

ECTO

R

C

OPERATIONSW

SELECTSW

DOWN

B–L

E

W

W

4

W

W B–R

R–G

R

R–W

HL

L–R

L–W

HR

W–B

W–B

VL

W–B

W–B

VR

W–B

W–B

M+

P–B

L–Y

B

P–B

GR

I12IGNITION SW

P–B

BATTERY

L–Y

DCTY

L

L–Y LL

P–G

P–B

P–G

P–L

W–G

W–B

P–L

W

R

L–R

R

P–B

W–B

UP DOWN CLOSE OPEN E1 GND

From BodyECU<10–10>

R13REMOTE CONTROL MIRROR SW

M 2MOON ROOF CONTROL ECU

M 3MOON ROOF CONTROL SW

1L7

1B7

W–B



D

AA

D

R11REMOTE CONTROLMIRROR LH

EC Left fenderapron

W–BR12REMOTE CONTROLMIRROR RH

LEFTDOWN RIGHTDOWN/RIGHT

UP/LEFT

UP

LEFTRIGHTLEFTRIGHT



12

34

34

21

BAT

TER

Y

13

IS 3

00

1

2

11D2

11O1

L–R

Y–G

L L–R

Y–R

Y–G

131I

2

ACC

IG1

AM1

4

MM

15A

SEAT

HTR

1D1

1L2

1L6

R–L

5IH

2

2B5

2F7

BJ

Fron

t flo

orpa

nel L

H

2

M

33

A

1

62

26

A

A

WL–

RL–

R

BR

B–LWW

M

BB–R

W–R

W–G

B

W–R

W–B

W–BBRBR

BR

R–L

B–W

B–W

Po

we

r S

ou

rce

Po

we

r S

ea

tS

ea

t H

ea

ter

P21

POW

ER

SEA

T M

OTO

R( D

river

’s

Seat

Slid

e C

ontro

l)

P18

POW

ER

SEA

T M

OTO

R( D

river

’s

Seat

Fro

nt V

ertic

al C

ontro

l)

I12

IGN

ITIO

N S

W

6IB

2

3BG

1

R–G

R–G( *1)

( *1)

R–G(*2)

R–G

IHC

owl

side

pane

lR

H

BK

W–B

P19

POW

ER

SEA

T M

OTO

R( D

river

’s

Seat

Rea

r V

ertic

al C

ontro

l)

P20

POW

ER

SEA

T M

OTO

R( D

river

’s

Seat

Rec

linin

g C

ontro

l)

1B

G1

REA

R

DO

WN

FRO

NT

FRO

NT

UP

UP

DO

WN

REA

R REARVERTICAL

FRONTVERTICAL SLIDERECLINING

(*2)

* 1

: w/ P

ower

Sea

t*

2 : w

/o P

ower

Sea

t

S 9SEAT HEATER(Driver’ s Seat)

S10SEAT HEATER(Front Passenger’ s Seat)


S 3SEAT HEATER SW(Driver’ s Seat)

S 4SEAT HEATER SW(Front Passenger’ s Seat)

Fron

tflo

orpa

nel

RH

2 3 8 7 5 10 6 9

P16POWER SEAT CONTROL SW (Driver’ s Seat)

W

1

1 1 2 2

2 2 1 1

2L–

R

Y–G

L L–R

Y–R

Y–G

P17POWER SEAT CONTROL SW (Front Passenger’ s Seat)

MMM

W

M

BB–R

W–R

W–G

B

W–R

P25

POW

ER S

EAT

MO

TOR

( Fro

nt P

asse

nger

’s

Seat

Slid

e C

ontro

l)

P22

POW

ER S

EAT

MO

TOR

( Fro

nt P

asse

nger

’s

Seat

Fro

nt V

ertic

al C

ontro

l)

P23

POW

ER S

EAT

MO

TOR

( Fro

nt P

asse

nger

’s

Seat

Rea

r Ver

tical

Con

trol)

P24

POW

ER S

EAT

MO

TOR

( Fro

nt P

asse

nger

’s

Seat

Rec

linin

g C

ontro

l)

RE

AR

DO

WN

FRO

NT

FRO

NT

UP

UP

DO

WN

RE

AR

REARVERTICAL

FRONTVERTICAL SLIDERECLINING

3 7 8 10 5 6 9

1

1 2 1 1

2 1 2 2

44

W–B

( *1)

W

30AD P/SEAT

40A AM1 120A ALT

12E7

2C1

W

30A P P/SEAT

1BH

1

14IH

2 W

W

W

3BH

1

R–L

R–L( *1)

( *1)

(*2)

BG1

2

W–B

W–B

( *1)

W–B

( *1)

W–B

(*2)

BH

12

2L5

C C


W–B W–B

(*1)

W–B

( *1)

W–B

( *1)

W–B

IG RE

ERIG

12

12


MEMO



12

34

B–R

34

21

14

IS 3

00

120A

ALT

20A

AM2

25A

EFI

1

11O 1

1

I12

IGN

ITIO

N S

W 1

40A

AM

1

1D2

2

ACC

IG1

IG2

ST2

AM1

4 67

AM2

5 3

1 21

B

7. 5

AIG

N

2A8

2H13

10B

9B

2

EFI

REL

AY

2

22

4D

10D

5D

11D

22E

14E

E15

16E

23E

24E

2E

5C

2C

6C

16B

8B

1D

2D

7D

D13

9D

15D

17D

18E

1E

9A

B–Y

IHC

owl s

ide

pane

l RH

2B4

2B11

AW W–R

L–R

B–R

B–R

L–R

B–Y

B–O

W W

W–R

B–Y

B–L

W–BW–B

B–R

B–Y

B–O

B–O

RG

R–L

G

L–Y

R–L

B–R

B–R

Y

G–Y

G–W

L–R

B–Y

R–B

GR

BR

BR

W–B

BR

+B+B

2S

1S

2S

LU+

SLU

–S

LT+

SLT

–O

ILE2

E03

EOM

BAT

TM

REL

IGS

WN

CO

+N

CO

–SP

2+SP

2–TH

ATH

WVP

AV

PA2

VTA

VTA

2VC

TCST

AST

PB

A

EN

GIN

E C

ON

TRO

L M

OD

ULE

, E

3E

2

21

1

2

12

E2

612

OT

410

SLT–

28

SLT+

17

SLU

–

1

SLU

+

22

S2

1

2

S1

1

O

O

See

Eng

ine

Con

trol a

ndE

ngin

e Im

mob

iliser

Sys

tem

<2–

9><

2–10

><

2–11

><

2–12

>

E 1

ELE

CTR

ON

ICA

LLY

CO

NTR

OLL

ED

TR

ANSM

ISSI

ON

SO

LEN

OID

GR

G

V 1VEHICLE SPEED SENSOR(Electronically Controlled Transmission)

BR

LG

B

W

Po

we

r S

ou

rce

Ele

ctr

on

ica

lly C

on

tro

lled

Tra

ns

mis

sio

n a

nd

A/T

In

dic

ato

r

BATT

ER

Y

( Con

t. n

ext

page

)

C,

E 4

D,

E 5

E,

E 6

5 1H5 1D

EB

Cen

ter s

ide

of th

ein

take

man

ifold

15A

ETC

S

1

1 2

7B +BML–W

L–W

O 1O/D DIRECT CLUTCHSPEED SENSOR

ECLe

ftfe

nder

apro

n

W–B W–B

EC

22B

9IA

1

10E VG

19E

EVG

9F

BR BR

ME

01

F,

E 7

8D

14D

Y–R

R–W

SLN

+SL

N– SL

N–

39

SLN

+

L

R

3D

W–L

S3

5

S3 Y

6D

W–G

S4

11

S4 V

2001 LEX

US

IS 300 (E

WD

413U)

M

7 865

14 IS 300 (Cont’ d)

26 C 13 E

F A

16 C

AB

AB

17 C

CA

20 E 21 E 7 C

IA212

E 6,

IA13

,

ED, E 5E 4

28 C

, C

B

27 C

A

JUNCTIONCONNECTOR

J 2J 1

D B

N D 3

1D1

2 4

10AGAUGE

BA

ENGINE CONTROL MODULE

,

1E2

E 3E 2

1K9

IE Front floor panelcenter LH

3

B17

A

1

JUNCTIONCONNECTOR

2

,

5

J 2

7

J 1

4 8

RB

19

PL RL NL DL 2L LL

MPX1MPX2

GR–B

LG–B

P 1A/T INDICATOR LIGHT SW[PARK/NEUTRAL POSITION SW]

A

R–B

R–L

R

GR

P

R–B G

R–B

R–L

BR–W

L–R L–R

E lectronically Controlled Transmiss ion and A/T Indicator

R–LR–L

To Shift LockControl ECU<21–4>

SN

OW

EC

T PWR

M R

See Multiplex

Com

munication S

ystem<

10–4>

16 IA1

SNO

W

PW

R

L–W

B–Y

IHCowl side panel RH BK Front floor panel RH

2F7

2B5 2L5


BRBR

L

L

A12A/C CONTROL ASSEMBLY

L

4

31 8

A

A

W–B

W–B

MPX– PWR SNOW

2 5

R–L

14 C

SFTD

8 IA2

GR

–R

GR

–G

IA27

SFTU

C4

1 2

GR

–R

GR

–G

C12A/T SHIFT MAIN SW[COMB. SW] J16

JUNCTIONCONNECTOR

C

C

W–B

EB

EA

E12ELE

CTR

ON

ICA

LLYC

ON

TRO

LLED TR

ANSM

ISSIO

NPA

TTERN

SELEC

T SW

EA

Y–G

J 1 J 2,

JUNCTION CONNECTOR

A B

14 F

L

G–Y

4 EA2

15 IA1

4

5

14 IA1

GR–B

LG–B

Y–G

Y–G

G–Y

G–Y

5 EA2

GG G–R

G–R

G–W

G–W

R–B

B A

B B

JUN

CTIO

NC

ON

NE

CTO

R

BA

J 1J 2

,

E 7, F

T 8TR

ANSM

ISSIO

N C

ON

TRO

L SW

(L–2 )

Y–G

LCD

C 9COMBINATION METER

17 E 21 F 31 F

EAFront side of theintake manifold

BR

W–B

W–B

BR

W–B

W–B

E1 E01 E02

A

A

F B

D A

9 IG1B

B

J 7JU

NC

TION

CO

NN

ECTO

R

JUN

CTIO

NC

ON

NEC

TOR

BA

J 1J 2

,


A

4

BR

–Y

BR–W

BR

BR–Y

SFTD SFTU ECC



12

34

B–R

34

21

15

IS 3

00

20A

AM

225

AEF

I

4

120A

ALT

11

1

1

L–R

1D2

1

2

40A

AM1

1O1

2

ACC

IG1

IG2

ST2

AM1

2

4

BATT

ER

Y

67

AM2

21

35

2

EFI

REL

AY

2

,

2

,

2

E

IHC

owl s

ide

pane

l RH

7. 5

AIG

N

2A8

2H13

8 2B

1B

10B

9B

11C

B–L

43

6C

18E

15E

16E

2E

23E

24E

30F

7F

8F

19F

20F

28C

27C

16B

112B2B

4

17E

21F

31F

1E

9A

22B

EAFr

ont s

ide

of th

ein

take

man

ifold

ECLe

ftfe

nder

apro

n

C23

IA1

10

Po

we

r S

ou

rce

10A

GAU

GE

1E2

1D1

IEFr

ont f

loor

pane

l cen

ter

LH

W–RW

L–R

B–R

B–O B–Y

B–Y

W W

W–R

B–Y

E 7

B–L

W–B

F

W–B

C 9CRUISE CONTROLINDICATOR LIGHT[COMB. METER]

B–R

RES

/AC

C

B–Y

B–O

SET

/CO

AST

B–O

19

CA

NC

EL

R–L

A

L–R

BR–W

L–R

BR–W

11

CBR

2

W–B

7

W–B

2

BR

W–B

1

W–B

A

BR

W–B

W–B

See Electronically ControlledTransmission andA/T Indicator System<14–6>

5

W–B

4

17

B–R

B–O

MP

X2M

PX1

CL+

CL–

M+

M–

GE0

1V

TA2

VTA

VCVP

A2

VPA

E 2

E 3

,

EN

GIN

E C

ON

TRO

L M

OD

ULE

AB

E2ST

PST

1–IG

SWM

REL

BATT

CC

SEC

EOM

E03

E 6

CR

UIS

ES 8STOP LIGHT SW

C12CRUISE CONTROL SW[COMB. SW]

E02

E01

E1

See

Eng

ine

Con

trol a

ndEn

gine

Imm

obilis

er S

yste

m<

2–7>

<2–8

><2–

9><

2–10

><

2–11

><

2–12

>

+B


Cru

ise

Co

ntr

ol

ECC

CC

S

I12

IGN

ITIO

N S

W

1H55 1D

B–R

8B

B–R

+B2

EB

Cen

ter s

ide

of th

ein

take

man

ifold

BR

, E

4C

D C17

15A

ETC

S

1

21

7B

L–W

+BM

L–W

9IA

1

TCC5

BR

ME0

1 BR

F9

9IG

1

FB

DA

JUNCTIONCONNECTOR

BAJ 1 J 2,

A

J 7

JUN

CTI

ON

CO

NN

EC

TOR

J 4

JUN

CTI

ON

CO

NN

ECTO

R

B

B

BR

BR

–Y

BR–Y

BR–W

2001 LEX

US

IS 300 (E

WD

413U)

M

1 2 3 4

FR+

BO

FR–FL–

LG

A15A16

V

3 421

16 IS 300

1

40A AM1

1 1

TRA

C O

FF

1O1

2 1D

D8 21 AD16

2

ACC

IG1AM1 4

7 A 8 A 9 A 7 D 1 D 4 A D15

C

6 D

1C7

A10 7 AA9 8 A 11 A 5 A 12 A 6 A 4 A A1

C

5 B

16C25

1 6

2 2

3

4

2

1

2

A29AB

S SPEED

SEN

SOR

REA

R LH

2

A30AB

S SPEED

SEN

SOR

REA

R R

H

222

A 8

ABS S

PEED

SENSO

R FR

ON

T RH

2

A 7

ABS S

PEED

SENSO

R FR

ON

T LH

1 A 29 A A19 3 B 14 A 13 A

B 1BR

AKE FLUID

LEVEL W

ARN

ING

SW

3 B

28 A

M

FL+

9 A 3 B 4 B

13 C 6 C

10AGAUGE

10AECU–IG

1D1

1E2 1L4

3 IA2

6 B

4 B 2 B 1 B

B1731 A 8 B

IHCowl sidepanel RH

ID Cowl sidepanel LH

W–B

W–B

W–B

19 B 20 B 11 B 12 B

9 BC1 19 BC1

7 B 14 B 22 B 24 B 16 B

11 C 26 C

1

1

2

2 2

2 2

2

2

1

2

1 1

1 1

1

ECLeft fender apron IH Cowl sidepanel RH

B–LW

L

W

L

L–R

L–W

W–R

G

W–G

W R–W

W–L

G–W R LG

L–W Y L–Y

W–B

W–B

W–B

L–Y

W–B

W B Y–R

R L W B

LR W B

Y–RW

–B

LG–R

L–Y

L–B

L

R–Y

R–Y

L–R

R–W

B–R

LG

L–Y

B–R

W R–Y

G–R

Y–G G L–B P R–Y

W–G

From Engine C

ontrolM

odule<2–12>

To Engine Control

Module<

2–12>

To Data Link C

onnector 3<2–5>

To Com

binationM

eter<22–2>

From Stop Light SW

<6–4>

From C

ombination M

eter<

22–7>

SFRH SFRR SFLH SFLR SRRH SRRR SRLH SRLR SPC SRC AST MT GND1 GND2 GND3 RL+ RL– RR+ RR– LBL– CSW

MR

L–R

L

L

L–W

L–Y

LG O

L B

R+ SR TC WT IND IG1 D/G SP1 STP LBL+ ENG+ ENG– TRC+ TRC–

4

ABS

BATTERY

3

120A ALT

ABS M

TR R

ELAY

60A ABS

ABS S

OL R

ELAY SLIP

BS BM GND

SFRH SFRR SFLH SFLR SRRH SRRR SRLH SRLR SPC SRC AST MT

I12IGNITION SW

L–R

NEO

AB S and Traction Control

BA

ABS AND TRACTION ACTUATOR

, A 6A 5

A17 A18,

ABS AND TRACTION ECU

A B

P ower S ource

A19, C A20, D

22 D

2 A

P

SMC

SMC

L–B

4 B

W–L

TS

To Data Link C

onnector1 and 3<

2–4>

5 C

W–L

WA

1

4 T 7TR

AC

OFF SW

A

A

2F72L5

2B5


C C


W–B

W–B

BRBR

W–B

J 7JU

NC

TION

CO

NN

ECTO

R

15 B

Y–R

PKB

2 C

W–R

FRO

To Headlight B

eam Level

Control EC

U<

8–2>

5 IA1

Y–RTo Parking Brake SW<

22–4>

2 IC1 8 IC1 7 IC1 6 IC1 2 IA2

A W–B

To Data Link C

onnector1 and 3<

2–9>

18 A

17A

CO

MB

INATIO

NM

ETER

BA

C 9

C10

,

R–L

21A

51G

W–BW–G

W–G

A A A A




12

34

W–G

34

21

1

17

IS 3

00 BATT

ER

Y

AM2

63

AM1

ST2

IG2

IG1

ACC

72

2G3

1D2

7. 5A SRS–B

2C1

1

120A ALT

1

40A AM1

1

20A AM2

2H13

1D6

7. 5

AIG

N

10A

SRS–

ACC

1J2

2J3

816

2G2

11 2A

22J

B–Y

To Data Link Connector1 and 3<2–9>

3B LA

6B

AC

C

5B IG2

19B TC

12B SIL

6C PR

–

5C PR

+

1A PL–

2A PL+

1C

SFR

–

2C

SFR

+

6A

SFL–

5A

SFL+

1

11BP–

10BP+

SPIR

ALC

ABLE

2

13BD–

14BD+

27BE1

7C

ESR

9CFSR

10C

SSR

+

12C

VUPR

43

21

12AES

L

10AFS

L

9A

SSL+

7A

VUP

L

43

21

20B–S

R

9B+SR

12

26B–S

L

15B+S

L

12

28BE2

IDC

owl s

ide

pane

l LH

IHC

owl s

ide

pane

l RH

R B–R

B–R

LG–B

W–R

W

LG–B

W–R

W B–L

LG–B

R GR–L

B–O

B–YB–Y

B–Y

R–W

W

R–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

L–W

P–L

BR–W

B–W

BR

W–R

BR–W

B–W

BR

W–R

12

12

12

21

I12

IGN

ITIO

N S

W

A10

AIR

BAG

SEN

SO

RFR

ON

T LH

A11

AIR

BAG

SEN

SOR

FRO

NT

RH

S11

SID

E A

IRB

AGSE

NS

OR

LH

S12

SID

E A

IRB

AGS

ENS

OR

RH

A25

AIR

BAG

SQ

UIB

( Ste

erin

g W

heel

Pad

)

A24

AIR

BAG

SQ

UIB

( Fro

nt P

asse

nger

Airb

ag A

ssem

bly)

S13

SID

E AI

RBA

GSQ

UIB

LH

S14

SID

E A

IRB

AGSQ

UIB

RH

P14

PR

ETE

NSI

ON

ER L

HP1

5PR

ETE

NSI

ON

ER

RH

C 9SRS WARNING LIGHT[COMB. METER]

C 4

C 5

,

CEN

TER

AIR

BAG

SEN

SO

R A

SSE

MBL

Y

AB

SR

SP

ow

er

So

urc

e

C,

C 6

To Data LinkConnector 3<2–5>

21

21

2

2 1

VU

PLSS

L+FS

LES

LVU

PR

SSR

+FS

RE

SR

1

2L5

11O

W

2J4

2B5

W–B

W–B

1G5

1J3

BKFr

ont f

loor

pan

el R

H

5 1H

IG2

43

IG2

2IG

21

IG2

AA

ECLe

ft fe

nder

apro

n

J 5

JUN

CTI

ON

CO

NN

EC

TOR

W–B

5 1D

9IA

1

CC


W–B W–B

P–B P–B

8C

RB

E+P–B P–B

11A

LBE

+P–B P–BTo Buckle SW LH<10–5>

6B

H1

To Buckle SW RH andSeat Belt WarningOccupant DetectionSensor<10–4>

(*2) (*2)

(*1)(*1)

* 2

: w/o

Pow

er S

eat

* 1

: w/ P

ower

Sea

t

To Data LinkConnector 1<2–9>

2001 LEX

US

IS 300 (E

WD

413U)

M

1 2 3 43 421

18 IS 300

1

120AALT

20AECU–B1

11

1D2

40AAM1

1 1O

15ACIG

I12IGNITION SW

6 1D

3

AM1 IG1

ACC

2

1E3 1A9

10ARADIONO. 2

BATTERY

1E7

1G5

ID Cowl side panel LH

10AMPX–B

6 2M

2I6

2I1

2L5

BK Front floor panel RH

2

4 5

1 2

2

A12CLOCK[A/C CONTROL ASSEMBLY]

1

C 7CIGARETTELIGHTER

2 1

1

14

R

B

C lock

WB

C igarette Lighter and Power O utlet

B–LW

Power Source

W–B

W–G

R–Y

B

ECLeft fender apron

AA


W–B

OUTSIDE TEMP. GAUGE

ACC +B

GND

A

AJ10JUNCTIONCONNECTOR

GR

GR

2G6

2B5

IHCowl side panel RH

W–B

P 4POWEROUTLET

C

CJ16JUNCTIONCONNECTOR

W–B

W–B

W–B

W–B

PP P

7. 5ADOME

2H7

1H6

1N2

BI Roof panel

V 5G

ARA

GE D

OO

R O

PENER

[VANITY LIG

HT LH

]

+B

GND

L–YL–Y

W–B

1

2

G arage Door O pener

1

2



12

34

34

21

19

IS 3

00

1

SPEA

KER

RE

LAY

I12

IGN

ITIO

N S

W

11

TELE

PHO

NE

TRA

NSC

EIV

ER

1D2 1

1O

10A

GA

UG

E

11D

2

ACC

IG1

AM1

4

1I6

7A

6A

13IB

1

15IG

1

3A

8A

3B

8B

5B

1B

4B

1A

2B

BL

Left

quar

ter p

anel

LH

1IB

1

Po

we

r S

ou

rce

Ce

llula

r M

ob

ile T

ele

ph

on

e

12

C

12

A

3

21

C

B–LGR

WW

GR GR GR

L–Y

G–B

W–B

BB

L–R

GR

R–L

R–L

R–L

BA

TELE

PH

ON

E T

RAN

SC

EIV

ER A

ND

SPE

AKE

R R

ELAY

, T1

1T1

0

SP+

SP–

SPI+

SPI–

SP+

SP–

MU

TET–

A–R

–A+

T–A+

LGN

DR

–DT

C–D

TE

C–D

TR

–DT

LGN

D

See

Rad

io a

nd P

laye

rSy

stem

<20

–3>

T–A+

1

R–A

+

CE

LLU

LAR

PH

ON

E( H

and

Set)

T–A–

2

TELI

BATT

ER

Y

GN

DPH

+

T–D

TIG

BAG

ND

TAC

CH

OO

KH

OO

KTA

CC

AGN

DT–

DT

IG

MIC

+M

IC–

120A ALT

J12

JUN

CTI

ON

CO

NN

ECTO

R

J15

JUN

CTI

ON

CO

NN

ECTO

R

T 4

TELE

PHO

NE

MIC

RO

PHO

NE

C12

TELE

PHO

NE

SW [CO

MB.

SW

]

7. 5A TEL

40A AM1

4B

BBR

–YB

R–Y

J 7

JUN

CTI

ON

CO

NN

EC

TOR

IG19

D AF B

J 1

J 2

,

JUN

CTI

ON

CO

NN

ECTO

R

AB

AA

EA

Fron

t sid

e of

the

inta

ke m

anifo

ld

J 4

JUN

CTI

ON

CO

NN

ECTO

R

BR

–WB

RBR

PH+

ECC

2001 LEX

US

IS 300 (E

WD

413U)

M

1 2 3 43 421

20 IS 300

1

120AALT

20ARADIONO. 1

1 1

1

1D2

40AAM1

1 1O

6 1D

2

ACC

IG1AM1

3


10ARADIONO. 2

1A9

16 A7 A 2 A 9 A

1 II1 9 II1

1 A 8 A

1 ID1 6 ID1

5 A A14

5 IB2 13 IB2

3 A A10

4 IB2 12 IB2

6 B

12 IB1

3 A 8 A

5 B 3 B 8 B

Power Source Radio and P layer

A

A

W

SP+ SP–

FR+ FR–FL+ FL–

RR+ RR–TLMT RL+ RL–

B–LW L–Y

GR

GR

L–Y

LG L

LG L

R W

P V

P V

Y B

R W

R WR–Y B Y

R–Y B Y

B Y

S 6 S 7,

STEREO COMPONENT AMPLIFIER

A B

ACC+B

MUTE SPI+ SPI–

2

I12IGNITION SW

BATTERY

1

12

2

4 A 11 A 6 A 15 A

2 IB2 8 IB2 3 IB2 9 IB2

B–W

Y–R

R–W

W–L

B–W

Y–R

R–W

W–L

8 B 9 B 17 B 18 B 15 B 1 B 10 B 3 B14 B

7 A 8 A 19 A 18 A 16 A 10 B 9 B 3 A

13 A

1

BA

RADIO AND PLAYER

, R 3

B

R 2

W G R B

WFL+

Y

WFL–

R–L

WFR+

R–W

WFR–

W–L

GND

(Shielded )

(Shielded )

ANT

CDL+ CDR+ CDL– CDR– SGND TX+ TX– AMP

B A26ANTENNAAMPLIFIER

L+ R+ L– R– SGND TX+ TX– AMP

T13TW

EETER

RH

T12TW

EETER

LH

F14FRONT DOORSPEAKER RH

F13FRONT DOORSPEAKER LH

1 21 2

3 43 4

11 22

TELEPH

ON

E TRA

NSC

EIVE

R AN

DSPE

AKER

RELAY B

AT10

T11,

R 9REAR SPEAKER AND WOOFER LH

R10REAR SPEAKER AND WOOFER RH

WOOFERREAR SPEAKERWOOFERREAR SPEAKER

2 4 1 3 2 4 1 3

R WB–W

Y–R

R–W

W–L

2B12

2G9 2F5

1 A

B

11 A

ACC

A

GR

L–Y

GR

L–Y

GR

R

12 A

E

20 A

E

IFFront floor panelcenter RH

BR

BR

BR

7 B

A

L

MUTE

MUTE

9



12

34

34

21

21

IS 3

00 1

I12

IGN

ITIO

N S

W

120A

ALT

40A RR DEF

11

1

11O

40A

AM

1

34

12

12D1D

3

10A

ECU

–IG

1D1

1D2

2

ACC

IG1

AM1

3 4

1B7

1L9

15A

MIR

HTR

2C1

2H4

12

53

2H3

2G1

122K

7ID

1

1 221

1H11

1H3

2H10

2I13

10A

RA

DIO

NO

. 2

1D6

1A9

34

2F7

Po

we

r S

ou

rce

Re

ar

Win

do

w D

efo

gg

er

an

d M

irro

r H

ea

ter

Sh

ift

Lo

ck

L–RR

R

R–L

W–B

2K3

2B5

IHC

owl s

ide

pane

l RH

W–B

B–LW

W

W

B–R

B–R

W

From Engine Control Module<14–7>

From A/T Indicator Light SW[Park/Neutral Position SW]<14–7>

B

W–B

W–BW–B

G–R G–R

G–R

L–R

BR BR

B–R

GR GR

G–W

GR–B

LG–B

222

1

12 D

5

A 410

16

11

D8

9

A

KLS+

E

IGAC

CS

TPN

SSD

MT3

10A

GA

UG

E

BATT

ER

Y

RR

DE

FR

ELA

Y

21

NO

ISE

FILT

ER( D

EF C

DS

)

NOISEFILTER(DEF CDS)

MIR

HTR

RE

LAY

J11

JUN

CTI

ON

CO

NN

EC

TOR

W–B


From Stop LightSW<6–4>

U 1

KEY

INTE

RLO

CK

SOLE

NO

ID[U

NLO

CK

WAR

NIN

G S

W]

S 5

SHIF

T LO

CK

CO

NTR

OL

EC

U

REA

R W

IND

OW

DEF

OG

GER

2L8

B

1L7

1L10

1G5

IDC

owl s

ide

pane

l LH

W–B

W–G

ECLe

ft fe

nder

apro

n

J 5

JUN

CTI

ON

CO

NN

ECTO

R

AA

W–B

G–R G

G–W L–R L

SHIF

T LO

CK

CO

NTR

OL

SW3 2 1 4

5

SHIF

T LO

CK

SOLE

NO

ID

P1 P P2

SLS

+

SLS

–

To B

ody

ECU

<10

–16>

2L5

CC BK

Fron

t flo

or p

anel

RH


W–B

W–B W–B

N 2NOISE FILTER(Rear Window Defogger)

R12MIRROR HEATER RH[REMOTE CONTROL MIRROR RH]

R11MIRROR HEATER LH[REMOTE CONTROL MIRROR LH]

1A2

W–B

W–G

W–B

A A

J 7

JUN

CTI

ON

CO

NN

ECTO

R


MEMO



12

34

34

21

( Con

t. n

ext

page

)22

IS

300

1

20A

ECU

–B1

120A

ALT

11

I12

IGN

ITIO

N S

W

12C1

2M6

1O1

7. 5

AS

RS–

B10

AM

PX–B

40A

AM1

21D

2H5

2G3

11D

2

ACC

IG1

AM1

41H

7

1E2

1H2

17A

15A

16A

5BC

1

11A

19A

12A

IEFr

ont f

loor

pan

el c

ente

r LH

TACHOMETER

SPEEDOMETER

ECONO

VOLT

WATER TEMP.

FUEL

From Igniter<1–2>

21A

20A

2A

5B

14AA

13

4BC

1

128

B 1

10A

GAU

GE

BR–W

C 9

C10

,

CO

MBI

NAT

ION

ME

TER

AB

BA

A/C

CO

NTR

OL

ASS

EMB

LY, A

13A1

2

BR–W

From ABS andTraction ECU<16–3>

W

B

W

B–L

W

R–Y

LG–B

R–L

R–Y

LG–B

L–R

R–Y

RM

DOOR

BR–W

R–Y

12

YY

Y–R

L

O

B 5

B 6

,

BO

DY

EC

U

AB

122

FRM

PX2

FE

P 3

PAR

KIN

GBR

AKE

SW

F15

FUE

LSE

ND

ER

F16

FUE

LSE

ND

ER( S

ub)

1

BAT

TER

Y

PKB

Po

we

r S

ou

rce

Co

mb

ina

tio

n M

ete

r

LG–B

R–Y

MP

X+

L–R

BR–W 32

O

O

78

T 6THEFT DETERRENT ECU

D D

D D


Y–R Y–R

Y–R

Y–R

From

ABS

and

Trac

tion

EC

U<

16–4

>Fr

om D

aytim

e R

unni

ngLi

ght R

elay

( Mai

n)<

3–4>

B

LCD

BUZZ

ER

MPX

1

MPX

2

2001 LEX

US

IS 300 (E

WD

413U)

M

5 6 7 8

22 IS 300 (Cont’ d)

Combination M eter

8 B 2 A 3 A 4 A A22

5 A 5 B 1 A18 A 8 A 6 B 7 A 9 A 3 B 4 B

See Turn Signal and

Hazard W

arning Light System<

4–2><

4–3>

See ABS and Traction

Control System

<16–3>

See Illumination

System<

5–2>

See H

eadlightS

ystem<3–3>

See Theft Deterrent System

<11–3>

See Engine Control and

Engine Imm

obiliser System<

2–3>

See Taillight andStop Light System

<6–3>

See SRS S

ystem<

17–3>

See Illumination

System<

5–2>

To ABS and Traction

ECU

<16–3>

See Headlight

System<

3–3>

1A2

1G5

Cowl side panel LH ID EC Left fender apron

TUR

N LH

TUR

N R

H

BEAM

CH

ARG

E

OIL P

RES

SUR

E

OIL LE

VEL

SEAT BE

LT

SN

OW

EC

T PWR

FUEL

CR

UISE

BRA

KE

ILLUM

INATIO

N

SRS

REAR

LIGH

TS

MA

LFUN

CTIO

NIN

DIC

ATOR

LAMP

ABS

TRA

C O

FF

SLIPSECU

RITY

W–B

Y–G

C 9 C10,

COMBINATION METER

A B

9 B

To Daytim

e Running Light

Relay (M

ain )<3–4>

Y

AAJ 5

JUNCTIONCONNECTOR

W–B

W–G

7 B

See Headlight Beam

LevelC

ontrol System<

8–2>

BEAM

LEVEL



12

34

1

34

21

23

IS 3

00

30A

RD

IFA

N

30A

CD

SFA

N

120A

ALT

40A

AM1

10A

ECU

–IG

2IG

1AM

1

3

4

21

35

21

53

4

1H3

33

33

33

W–L

3

11

1D1

2H10

2A7

33

33

3


3

21 M

12 M

ECLe

ft fe

nder

apr

onIH

Cow

l sid

e pa

nel R

H

23

11C

A

2

AA

CC

2

B–LW

W

L

W

B–R

L–B

W–B

L–W

L–B

W–B

W–BL–B

L–B

L–W

L–R

W

L L–W W–B

L–B

L–R

L–R

WL

B–R

L–W

L–Y

L–B

B–R

B–R

B–R

L–B

W–B

L–W

W–B

W–B

W–B

A 4A/C SINGLEPRESSURE SW

D 7DIODE(A/C)

R 1RADIATORFAN MOTOR

W 2WATER TEMP. SW

FAN NO. 3RELAY

FAN NO. 1RELAY

A 2A/C CONDENSERFAN MOTOR

FAN NO. 2RELAY

BAT

TER

Y

I12

IGN

ITIO

N S

W

Po

we

r S

ou

rce

Ra

dia

tor

Fa

n a

nd

Co

nd

en

se

r F

an

25

11

1

22

2

To A

/C C

OM

PR

elay

<24

–2>

13

ACC

1

11D2

2 1O1

C

L–B

J 3

JUN

CTI

ON

CO

NN

EC

TOR To Engine Control

Module<2–11>


MEMO



12

34

34

21

( Con

t. n

ext

page

)24

IS

300 1

20A

EC

U–B

112

0AAL

T

10A

MPX

–B40

AAM

140

AH

EAT

ER

2

ACC

IG1

AM1

3 4

21

35

2M6

1O1

2C1

2D2

122I

33

HTR

RE

LAY

11

2I6

1D2

2H12

3

A/C

CO

MP

REL

AY

3

10A

A/C

1H12

1A9

10A

RAD

ION

O. 2

10A

ECU

–IG

1D1

1H3

1D6

M1

2

3A

2A

1A

1B

2B

2IF

21

IF2

3IF

2

21C

C10

18E

FE

Inst

rum

ent p

anel

rein

forc

emen

t RH

IGE

CLe

ft fe

nder

apr

on

1

A B C

Po

we

r S

ou

rce

Au

tom

ati

c A

ir C

on

dit

ion

ing

BATT

ER

Y

B–LB

WW

R–Y

B–R

R

28

L

L

L

V

W–B

R

B

W–B

W–BL–Y

LG–R

BR BR LG–R

W–B

GR

W

L–R

L–RR

R–Y

B–R GR V L

L

V

W–B

GR

122

A

1

2

1

211

2

4

1

A

B 2

BLO

WE

R M

OTO

R

J10

JUN

CTI

ON

CO

NN

ECTO

R

I12

IGN

ITIO

N S

W

W

A 1A/C AMBIENT TEMP. SENSOR

A 4A/C DUAL PRESSURE SW

BLOWER MOTORCONTROLLER

BAB 3 B 4,

GN

DSI

+B

E2TA

MPR

E

M–

M+


From Diode(A/C)<23–3>

1G9

L–R

C

MPX

1

IA1

16

DL

L L

21

53

5E

A1A 3A/C MAGNETIC CLUTCH ANDLOCK SENSOR

31 2 E

AFr

ont s

ide

of th

ein

take

man

ifold

P P

BR

L–W

L–W

W–L

29F

LCK1

W–L

E 4

E 6

,

ENG

INE

CO

NTR

OL

MO

DU

LE

CE

E 7

, F

AA

CB

JUNCTIONCONNECTOR

BAJ 1 J 2,

L–R

2001 LEX

US

IS 300 (E

WD

413U)

M

5 6 7 8

24 IS 300 (Cont’ d)

F

E

A

B

C

R–Y

B–R

GR

V

L

4 A 13 A 5 A 1 B8 B 10 A 3 A 8 A 2 A

2I5

2H10

See Multiplex

Com

munication

System<

10–4>

See ElectronicallyC

ontrolled Transmission and

A/T Indicator System<

14–7>

See Turn Signal and

Hazard W

arning LightSystem

<4–4>

See Com

binationM

eter System

<22–3>

GR

7 A 6 A 17 B 13 B 6 BB15B18 3 B 10 B B5

M M

8 IF1 2 IF1 3 IF1 1 IF1 10 IF1

4 IF1

9 IF1 6 IF1 7 IF1

14 B 4 B 11 B

2

1

1 IE1

GR

–R

14 A

2I1

2B5

IHCowl sidepanel RH

A12 A13,

A/C CONTROL ASSEMBLY

A B

A utomatic A ir Conditioning

1 1

B

P–B

B

B

LG–R

B

1 5 3

IE1

6

2

7 1 5 3 6 7

22

B

B

GR–L

BR–W BR–W

GR GR

B–R

R–Y

B–R

PKBSNOWPWRP–S/BMPX+

BR–W

HAZD

V L

L–W

+B

GR

–L

IG

BR

–W

ACC

GR

–R

R–Y

GND

L–R

P–L

AMC

J10JU

NC

TION

CO

NN

ECTO

R

J 8JU

NC

TION

CO

NN

ECTO

R

AMH

B–R

BR

–W

TP

GR

–R

BR–W

TE

GR

–R

GR

–L

AOF

L–W

BR–W

AOD

R–Y

GR

S5

L–R

P–L

TPM

BR

–W

GR

SG

BR–W

BR

–W

TS

V–W

B–R

TR

V–W

LG–R

HR

P–B

W–B

BLW

W–B

W–B

A14A/C

RO

OM

TEMP

. SEN

SOR

A23AIR VENT MODE CONTROLSERVO MOTOR

A22AIR MIX CONTROLSERVO MOTOR

A15

A/C

SOLAR

SEN

SOR

A16A/C

THER

MISTO

RA1

DL

MPX–

L

See ElectronicallyC

ontrolled Transmission and

A/T Indicator System<

14–6>

2L5


C

C

J16JU

NC

TION

CO

NN

ECTO

RW

–BW

–B

M

1 5 3 6 7

GR

–R

GR

–R

BR–W

Y–G

R–W

A21AIR INLET CONTROLSERVO MOTOR

B16

GR

–R

TPI

B9

Y–G

REC

B2

R–W

FRS

B

BBR–W

BR–W

GR–R

GR–R

Documents

1 IS 300 ELECTRICAL WIRING DIAGRAM - 2JZGARAGE is 300 electrical wiring diagram 1 p 1 1 1 1 2 1d 1 1o 2 acc ig1 ig2 st2 am1 ... m overall electrical wiring diagram 1 2 34 51h ... traction