Lexus ES300 (1997 year). Manual — part 636

140

POWER SEAT (DRIVER’S SEAT w/o DRIVING POSITION MEMORY),
(FRONT PASSENGER’S SEAT)

P15

POWER SEAT CONTROL SW (DRIVER’S SEAT)

11–GROUND : ALWAYS APPOX 12 VOLTS

7–GROUND : ALWAYS CONTINUTIY

P16

POWER SEAT CONTROL SW (FRONT PASSENGER’S SEAT)

11–GROUND : ALWAYS APPOX 12 VOLTS

7–GROUND : ALWAYS CONTINUTIY

: PARTS LOCATION

CODE

SEE PAGE

CODE

SEE PAGE

CODE

SEE PAGE

J37

30

P19

32

P23

32

P15

32

P20

32

P24

32

P16

32

P21

32

P25

32

P17

32

P22

32

: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR

CODE

SEE PAGE

JUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)

1D

24

INSTRUMENT PANEL WIRE AND INSTRUMENT PANEL J/B (LOWER FINSIH PANEL)

: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS

CODE

SEE PAGE

JOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)

IF2

36

FLOOR WIRE AND INSTRUMENT PANEL WIRE (LEFT KICK PANEL)

IP1

38

FLOOR NO.2 WIRE AND INSTRUMENT PANEL WIRE (RIGHT KICK PANEL)

BS1

42

FLOOR WIRE AND SEAT NO.1 WIRE (UNDER THE DRIVER’S SEAT)

BT1

42

FLOOR NO.2 WIRE AND SEAT NO.2 WIRE (UNDER THE FRONT PASSENGER’S SEAT)

: GROUND POINTS

CODE

SEE PAGE

GROUND POINTS LOCATION

IN

36

RIGHT KICK PANEL

BN

40

UNDER THE LEFT CENTER PILLAR

BO

40

UNDER THE RIGHT CENTER PILLAR

: SPLICE POINTS

CODE

SEE PAGE

WIRE HARNESS WITH SPLICE POINTS

CODE

SEE PAGE

WIRE HARNESS WITH SPLICE POINTS

I 2

38

INSTRUMENT PANEL WIRE

B 6

40

FLOOR NO.2 WIRE

A

A

A

A

A

A

(H IN T : SEE PA G E 7)

5

4

3

2

1

X

7

8

9 10 11 X

5

4

3

2

1

X

7

8

9 10 1 1 X

1

2

1

2

1

2

1

2

1

2

1

2

1

2

1

2

J37

P 15

P 16

P 17

P 1 9

P 2 5

P 24

P 23

P 22

P 21

P2 0

G R A Y

B LA C K

SERVICE HINTS

1

2

8

X

X

X

X

X

3

1

A

A

A

A

A

A

(HINT : SEE PAGE 7)

1

2

B 4

D 9

J 4

BLACK

J15

J37

U 1

A

BLUE

C 7

D

BROWN

C10

D

D

D

(HINT

: SEE

PAGE 7)

A

A

A

A

A

A

(HINT : SEE PAGE 7)

139

UNLOCK AND SEAT BELT WARNING

140

UNLOCK AND SEAT BELT WARNING

FROM POWER SOURCE SYSTEM (SEE PAGE 56)

II

2

A

W–

B

W–

B

L–B

W–

B

R–

B

W–

B

R

JUNCTION
CONNECTOR

UNL

W

(IG

N

COURTESY

RONT LH

J15

U 1

D

3

A

8

D

D

R–L

R–

L

R–

W

SE

A

T

B

E

L

T

W

A

R

N

IN

G

LI

G

H

T

[C

O

M

B

.

ME

T

E

R

]

D

C 7

, C1

0

A

BN

2

A

R–

Y

W–

B

SW

JUNCTION
CONNECTOR

JUNCTION
CONNECTOR

BS2

5

R–

Y

R–

Y

(*1

)

(*2

)

(*1

)

* 1 : W/ DRIVING POSITION MEMORY
* 2 : W/O DRIVING POSITION MEMORY

(*2

)

BS2

8

W–

B

W–

B

(*1

)(

*1

)

J 4

J37

1

O

C

K

W

A

RNI

NG

S

IT

IO

N

KEY

)

1

BUCKLE

B 4

1

DOOR
SW F

D 9

7. 5A
DOME

2J

12

10A
GAUGE

1D

2

1W

1

1J

7

1M

3

1M

5

10

5

1

INTEGRATION RELAY

1T

3

9

1S

7

6

7

1S

4

8

141

CURRENT ALWAYS FLOWS TO TERMINAL 1 OF THE INTEGRATION RELAY THROUGH THE DOME FUSE.

1. SEAT BELT WARNING SYSTEM

WHEN THE IGNITION SW IS TURNED ON, CURRENT FLOWS FROM THE GAUGE FUSE TO THE TERMINAL 7 OF THE INTEGRATION
RELAY AT THE SAME TIME, CURRENT FLOWS TO TERMINAL 9 OF THE RELAY FROM THE GAUGE FUSE THROUGH THE SEAT BELT
WARNING LIGHT THIS CURRENT ACTIVATES THE INTEGRATION RELAY AND, FOR APPROX. 4–8 SECONDS, CURRENT FLOWING
THROUGH THE WARNING LIGHT FLOWS FROM TERMINAL 9 OF THE RELAY

→

TERMINAL 10

→

GROUND, CAUSING THE WARNING

LIGHT TO LIGHT UP. AT THE SAME TIME AS THE WARNING LIGHT LIGHTS UP, A BUCKLE SW OFF SIGNAL IS INPUT TO TERMINAL 8
OF THE RELAY, THE CURRENT FLOWING TO TERMINAL 1 OF THE RELAY FLOWS FROM TERMINAL 10

→

GROUND AND THE SEAT

BELT WARNING BUZZER SOUNDS FOR APPROX. 4–8 SECONDS. HOWEVER, IF SEAT BELT IS PUT ON DURING THIS PERIOD
(WHILE THE BUZZER IS SOUNDING), SIGNAL INPUT TO TERMINAL 8 OF THE RELAY STOPS AND THE CURRENT FLOW FROM
TERMINAL 1 OF THE RELAY

→

TERMINAL 10

→

GROUND IS CUT, CAUSING THE BUZZER TO STOP.

2. KEY REMINDER SYSTEM

WITH THE IGNITION KEY INSERTED IN THE KEY CYLINDER (UNLOCK WARNING SW ON), THE IGNITION SW STILL OFF AND DOOR
OPEN (DOOR COURTESY SW ON), WHEN A SIGNAL IS INPUT TERMINAL 5 AND 6 OF THE RELAY, THE INTEGRATION RELAY
OPERATES, CURRENT FLOWS FROM TERMINAL 1 OF THE RELAY

→

TERMINAL 10

→

GROUND AND THE KEY REMINDER BUZZER

SOUNDS.

B 4

BUCKLE SW

1–2 : CLOSED WITH THE DRIVER’S SEAT BELT USE

D 9

DOOR COURTESY SW FRONT LH

1–GROUND : CLOSED WITH THE FRONT LH DOOR OPEN

INTEGRATION RELAY

10–GROUND : ALWAYS CONTINUITY

6–GROUND : CONTINUITY WITH THE FRONT LH DOOR OPEN
5–GROUND : CONTINUITY WITH THE IGNITION KEY IN CYLINDER
8–GROUND : CONTINUITY UNLESS DRIVER’S SEAT BELT IN USE
9–GROUND : 0 VOLTS FOR 4–8 SECONDS WITH THE IGNITION SW ON AND 12 VOLTS 4–8 SECONDS AFTER IGNITION SW ON
1–GROUND : ALWAYS APPROX. 12 VOLTS
7–GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ON POSITION

U 1

UNLOCK WARNING SW (IGNITION KEY)

1–2 : CLOSED WITH THE IGNITION KEY CYLINDER

: PARTS LOCATION

CODE

SEE PAGE

CODE

SEE PAGE

CODE

SEE PAGE

B4

32

D 9

30

J37

30

C 7

A

28

J 4

29

U 1

29

C10

D

28

J15

29

,,,

,,,

,,,

: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR

CODE

SEE PAGE

JUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)

1D

24

INSTRUMENT PANEL WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)

1J

24

COWL WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)

1N

24

COWL WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)

1S

24

FLOOR WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)

1T

24

INSTRUMENT PANEL WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)

1W

24

COWL WIRE AND INSTRUMENT PANEL J/B (LOWER FINISH PANEL)

2J

20

COWL WIRE AND ENGINE ROOM J/B (ENGINE COMPARTMENT LEFT)

: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS

CODE

SEE PAGE

JOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)

BS2

42

FLOOR WIRE AND SEAT NO. 1 WIRE (UNDER THE DRIVER’S SEAT)

: GROUND POINTS

CODE

SEE PAGE

GROUND POINTS LOCATION

II

36

INSTRUMENT PANEL BRACE LH

BN

40

UNDER THE LEFT CENTER PILLAR

SYSTEM OUTLINE

SERVICE HINTS