Lexus SC300 / Lexus SC400. Service manual — part 981

240

GROUND POINT

: RELAY BLOCKS

CODE

SEE PAGE

RELAY BLOCKS (RELAY BLOCK LOCATION)

2

19

ENGINE COMPARTMENT LEFT

4

22

LEFT KICK PANEL (J/B NO.1 LEFT)

: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR

CODE

SEE PAGE

JUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)

1D

20

FRONT DOOR LH WIRE

1E

20

INSTRUMENT PANEL WIRE

1F

20

ROOF WIRE

1G

20

COWL NO. 2 WIRE

1H

1J

20

COWL WIRE

1K

20

COWL WIRE

3A

3D

3F

22

INSTRUMENT PANEL WIRE

3G

22

INSTRUMENT PANEL WIRE

3H

: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS

CODE

SEE PAGE

JOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)

IE1

36

ENGINE ROOM MAIN WIRE AND COWL WIRE (R/B NO.4)

IE2

36

ENGINE ROOM MAIN WIRE AND COWL WIRE (BEHIND GLOVE BOX)

IF2

36

FRONT DOOR LH WIRE AND COWL WIRE (LEFT KICK PANEL)

IG1

36

INSTRUMENT PANEL WIRE AND COWL WIRE (R/B NO.5)

IH1

36

COWL NO. 2 WIRE AND COWL WIRE (BEHIND COMBINATION METER)

IJ1

36

ENGINE WIRE AND COWL WIRE (RIGHT KICK PANEL)

IK1

36

ENGINE WIRE AND INSTRUMENT PANEL WIRE (RIGHT KICK PANEL)

IK2

36

ENGINE WIRE AND INSTRUMENT PANEL WIRE (RIGHT KICK PANEL)

IN1

38

ENGINE ROOM MAIN WIRE AND A/C WIRE (BEHIND GLOVE BOX)

IP1

38

FRONT DOOR RH WIRE AND COWL WIRE (RIGHT KICK PANEL)

IQ1

38

INSTRUMENT PANEL WIRE AND CONSOLE BOX WIRE (UNDER THE INSTRUMENT PANEL CENTER)

IQ2

38

INSTRUMENT PANEL WIRE AND CONSOLE BOX WIRE (UNDER THE INSTRUMENT PANEL CENTER)

BS1

40

ENGINE ROOM MAIN WIRE AND FLOOR WIRE (LEFT KICK PANEL)

BT1

40

FLOOR WIRE AND COWL WIRE (LEFT KICK PANEL)

BU1

40

FLOOR WIRE AND INSTRUMENT PANEL WIRE (LEFT KICK PANEL)

BU2

40

FLOOR WIRE AND INSTRUMENT PANEL WIRE (LEFT KICK PANEL)

BV2

40

FLOOR NO. 3 WIRE AND CONSOLE BOX WIRE (UNDER THE INSTRUMENT PANEL CENTER)

BX1

40

FLOOR NO. 3 WIRE AND COWL WIRE (RIGHT KICK PANEL)

BY1

40

INSTRUMENT PANEL WIRE AND FLOOR NO. 3 WIRE (RIGHT KICK PANEL)

BZ1

40

ROOF WIRE AND MOON ROOF WIRE (FRONT SIDE OF ROOF LEFT)

Ba1

42

FLOOR WIRE AND FRONT SEAT LH WIRE (UNDER THE FRONT LH SEAT)

Ba2

42

FLOOR WIRE AND FRONT SEAT LH WIRE (UNDER THE FRONT LH SEAT)

Bb1

42

FLOOR NO. 3 WIRE AND FRONT SEAT RH WIRE (UNDER THE FRONT RH SEAT)

Bd1

42

FLOOR NO. 3 WIRE AND LUGGAGE NO. 2 WIRE (RIGHT SIDE OF LUGGAGE COMPARTMENT)

: GROUND POINTS

CODE

SEE PAGE

GROUND POINTS LOCATION

EA

34

FRONT SIDE OF RIGHT FENDER

EB

34

FRONT SIDE OF LEFT FENDER

EC

34

REAR SIDE OF INTAKE MANIFOLD

ED

34

REAR SIDE OF CYLINDER HEAD RH

IF

36

LEFT KICK PANEL

IG

36

INSTRUMENT PANEL BRACE LH

IH

36

UNDER THE ASHTRAY LH

II

36

UNDER THE ASHTRAY RH

IJ

36

RIGHT KICK PANEL

BK

40

UNDER THE CENTER PILLAR LH

BL

40

UNDER THE CENTER PILLAR RH

BM

40

BACK PANEL CENTER

241

: SPLICE POINTS

CODE

SEE PAGE

WIRE HARNESS WITH SPLICE POINTS

CODE

SEE PAGE

WIRE HARNESS WITH SPLICE POINTS

E 1

I32

38

ENGINE WIRE

E 3

I33

28

ENGINE WIRE

E 4

ENGINE ROOM MAIN WIRE

I38

28

COWL WIRE

E 5

34

ENGINE ROOM MAIN WIRE

B 1

40

ROOF WIRE

E 7

34

B 2

40

ROOF WIRE

E10

B 3

40

MOON ROOF WIRE

E12

B 4

40

FRONT DOOR LH WIRE

E16

34

ENGINE WIRE

B 6

40

FRONT DOOR RH WIRE

E20

34

ENGINE WIRE

B 7

40

FRONT DOOR RH WIRE

I 1

B 8

40

FLOOR MAIN WIRE

I 5

B13

I 7

B14

40

FLOOR MAIN WIRE

I 8

38

COWL WIRE

B15

40

FLOOR MAIN WIRE

I11

38

COWL WIRE

B20

I12

B21

40

FLOOR NO 3 WIRE

I13

B23

40

FLOOR NO. 3 WIRE

I14

B24

I22

38

INSTRUMENT PANEL WIRE

B26

I23

38

INSTRUMENT PANEL WIRE

B27

42

FRONT SEAT LH WIRE

I25

38

ENGINE ROOM MAIN WIRE

B28

42

FRONT SEAT LH WIRE

I27

38

A/C WIRE

B29

42

FRONT SEAT RH WIRE

I29

38

CONSOLE BOX WIRE

B31

40

FRONT DOOR LH WIRE

I31

38

CONSOLE BOX WIRE

B33

40

FRONT DOOR RH WIRE

80

HEADLIGHT (FOR USA)

18

9

7

13

OFF

TAIL

HEAD

LOW

HIGH

FLASH

LI

G

H

T

C

O

NT

RO

L

S

W

DI

M

M

E

R

S

W

COMBINATION
SW

C15

1J

1

2

2

2

4

1K

5

2

1

2

1

2

1

2

1

2

IF

I 8

I 5

E 2

E 1

IJ

IE1

19

IG1

8

4

4

4

6

3

1

19

15

6

2

6

1

3

7

16

20

4

2

5

7

IG1

9

IE1

6

IE1

12

W

R–W

W

R–

W

R–

W

R–

W

R–

B

R–

B

R–

W

R–

L

R–

G

R–

Y

W

W–

B

W–

B

W–

B

W–

B

W–

B

R

W–

B

R

R

R

W–

B

W–

B

R–

W

R–Y

W–

G

60

A

M

A

IN

15A
HEAD
(LH)

15A
HEAD
(RH)

FUSE BLOCK

H

IG

H

B

EAM

IN

DI

CA

T

O

R

L

IG

H

T

[C

O

M

B

.

ME

T

E

R]

INTEGRATION
RELAY

LO

R

H

HI

R

H

HI

L

H

LO

L

H

BATTERY

HE

A

D

L

IG

H

T

RE

L

A

Y

FROM CORNERING
LIGHT RELAY

I16

C1

3

H4

H2

H1

H3

F 9

H

EAD

L

IG

H

T

DIODE

E 3

I15

IE1

5

R–

Y

R–Y

W–B

R

R

R

R

R

R

R–

Y

R–

G

X

6

7

X

X

X

X

6

7

1

2

1

2

5 6

C13

C15

H 1, H 2

H 3, H 4

I16

BLACK

BLACK

BROWN

F 9

X

X

X

X 13

18

9

4

X

7

X

81

HEADLIGHT RELAY

1–2 : CLOSED WITH LIGHT CONTROL SW AT HEAD POSITION OR DIMMER SW AT FLASH POSITION

C15

LIGHT CONTROL SW [COMB. SW]

13–4: CLOSED WITH LIGHT CONTROL SW AT HEAD POSITION

C15

DIMMER SW [COMB. SW]

7–18: CLOSED WITH DIMMER SW AT FLASH POSITION
9–18: CLOSED WITH DIMMER SW AT HIGH OR FLASH POSITION

: PARTS LOCATION

CODE

SEE PAGE

CODE

SEE PAGE

CODE

SEE PAGE

C13

28

H 1

26

H 4

26

C15

28

H 2

26

I16

29

F 9

26

H 3

26

: RELAY BLOCKS

CODE

SEE PAGE

RELAY BLOCKS (RELAY BLOCK LOCATION)

2

19

ENGINE COMPARTMENT LEFT

4

23

LEFT KICK PANEL (J/B NO.1 LEFT)

: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR

CODE

SEE PAGE

JUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)

1J

20

COWL WIRE

1K

20

COWL WIRE

: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS

CODE

SEE PAGE

JOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)

IE1

36

ENGINE ROOM MAIN WIRE AND COWL WIRE (R/B NO. 4)

IG1

36

INSTRUMENT PANEL WIRE AND COWL WIRE (R/B NO. 5)

: GROUND POINTS

CODE

SEE PAGE

GROUND POINTS LOCATION

IF

36

LEFT KICK PANEL

IJ

36

RIGHT KICK PANEL

: SPLICE POINTS

CODE

SEE PAGE

WIRE HARNESS WITH SPLICE POINTS

CODE

SEE PAGE

WIRE HARNESS WITH SPLICE POINTS

E 1

I 5

E 2

34

ENGINE ROOM MAIN WIRE

I 8

38

COWL WIRE

E 3

I15

SERVICE HINTS