Lexus SC300 / Lexus SC400. Manual — part 1016

98

STOP LIGHT

1I

10

1C

2

1E

12

3D

13

1C

10

1H

1

3A

4

1

2

B10

B15

+
–

+
–

BM

BL

B15

B14

Bd1

2

Bc1

11

Bd1

1

Bc1

7

7

8

4

3

3

4

1

11

1

2

5

5

1

2

W–B

W–B

W–B

G–W

G–W

W

G–

W

G–

W

G–

W

Y

V–

G

Y

Y

Y

G–

W

G–

W

B

W–

B

R–

W

R–

W

R–

W

W–

B

W–

B

W–

B

B

FROM POWER SOURCE SYSTEM (SEE PAGE 56)

15A
STOP

10A
GAUGE

A

1

B

11

HO

L

D

CI

RC

UIT

W–

B

S

T

OP

L

IGH

T

[R

EAR

C

O

M

B.

L

IG

H

T

]

LH

RH

R10

R11

HIG

H

M

O

UN

T

S

T

O

P

LIG

H

T

(W/

O

R

EAR

S

P

O

IL

E

R

)

H8

HI

G

H

M

O

U

NT

S

T

O

P

LI

G

H

T

(W/

R

EAR

SPO

IL

ER

)

H9

LIGHT FAILURE SENSOR

L 3

C14

, C1 3

A

B

BU1

9

V–

G

STOP LIGHT
SW

S12

REAR LIGHT WARNING
LIGHT [COMB. METER]

B21

W–

B

W–B

99

CURRENT IS APPLIED AT ALL TIMES THROUGH A STOP FUSE TO TERMINAL 2 OF THE STOP LIGHT SW.

WHEN THE IGNITION SW IS TURNED ON, CURRENT FLOWS FROM THE GAUGE FUSE TO TERMINAL 8 OF THE LIGHT FAILURE
SENSOR, AND ALSO FLOWS THROUGH THE REAR LIGHT WARNING LIGHT TO TERMINAL 4 OF THE LIGHT FAILURE SENSOR.

STOP LIGHT DISCONNECTION WARNING

WHEN THE IGNITION SW IS TURNED ON AND THE BRAKE PEDAL IS PRESSED (STOP LIGHT SW ON), IF THE STOP LIGHT CIRCUIT IS
OPEN, THE CURRENT FLOWING FROM TERMINAL 7 OF THE LIGHT FAILURE SENSOR TO TERMINALS 1, 2 CHANGES, SO THE LIGHT
FAILURE SENSOR DETECTS THE DISCONNECTION AND THE WARNING CIRCUIT OF THE LIGHT FAILURE SENSOR IS ACTIVATED.

AS A RESULT, THE CURRENT FLOWS FROM TERMINAL 4 OF THE LIGHT FAILURE SENSOR

→

TERMINAL 11

→

GROUND AND TURNS

THE REAR LIGHT WARNING LIGHT ON. BY PRESSING THE BRAKE PEDAL, THE CURRENT FLOWING TO TERMINAL 8 OF THE LIGHT
FAILURE SENSOR KEEPS THE WARNING CIRCUIT ON HOLD AND THE WARNING LIGHT ON UNTIL THE IGNITION SW IS TURNED OFF.

S12

STOP LIGHT SW

2–1: CLOSED WITH BRAKE PEDAL DEPRESSED

L 3

LIGHT FAILURE SENSOR

1, 2, 7–GROUND : APPROX. 12 VOLTS WITH STOP LIGHT SW ON
4, 8–GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
11–GROUND : ALWAYS CONTINUITY

: PARTS LOCATION

CODE

SEE PAGE

CODE

SEE PAGE

CODE

SEE PAGE

C13

B

28

H 9

30

R11

31

C14

A

28

L 3

30

S12

29

H 8

30

R10

31

: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR

CODE

SEE PAGE

JUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)

1C

20

FLOOR WIRE

1E

20

INSTRUMENT PANEL WIRE

1H

20

COWL WIRE

1I

20

COWL WIRE

3A

22

INSTRUMENT PANEL WIRE

3D

22

INSTRUMENT PANEL WIRE

: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS

CODE

SEE PAGE

JOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)

BU1

40

FLOOR WIRE AND INSTRUMENT PANEL WIRE (LEFT KICK PANEL)

Bc1

40

FLOOR NO. 3 WIRE AND FLOOR WIRE (UNDER THE LEFT SIDE OF REAR SEAT CUSHION)

Bd1

40

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

: GROUND POINTS

CODE

SEE PAGE

GROUND POINTS LOCATION

BL

40

UNDER THE CENTER PILLAR RH

BM

40

BACK PANEL CENTER

: SPLICE POINTS

CODE

SEE PAGE

WIRE HARNESS WITH SPLICE POINTS

CODE

SEE PAGE

WIRE HARNESS WITH SPLICE POINTS

B10

40

FLOOR MAIN WIRE

B15

40

FLOOR MAIN WIRE

B14

40

FLOOR MAIN WIRE

B21

40

FLOOR NO. 3 WIRE

SYSTEM OUTLINE

SERVICE HINTS

100

STOP LIGHT

86

TAILLIGHT

1K

5

1K

11

1A

3

1C

16

1J

1

1

2

1

2

E11

E 5

1B

2

OFF

TAIL

HEAD

IF

G

G

W–B

W–B

G

W

W–

B

W–

B

G

–

L

LG

–B

G–

W

G–

W

G

G

G

G

G

W–

B

W–

B

W–L

4

3

10

3

4

11

TAILLIGHT
RELAY

FUSE BLOCK

COMBINATION
SW

BATTERY

IN

T

E

G

R

A

T

IO

N

RE

L

A

Y

IN

T

E

G

R

A

T

IO

N

RE

L

A

Y

15A
TAIL

LI

G

H

T

CO

NT

RO

L

S

W

(US

A

)

(CA

N

A

DA

)

12

0A

A

L

T

10

0A

A

M

1

C15

I1

6

(CA

N

A

DA

)

I16

(US

A

)

W–

L

F 9

1

5

2

3

6

4

(US

A

)

(CA

NA

DA

)

2

1

F

R

O

N

T

SI

D

E

M

AR

KE

R

LI

G

H

T

L

H

F5

FR

O

N

T

C

L

E

A

R

A

N

C

E

LI

G

H

T

L

H

F3