Lexus ES300 (1997 year). Manual — part 402
–
DIAGNOSTICS
POWER SEAT CONTROL SYSTEM
DI–385
537
1997 LEXUS ES300 (RM511U)
2
Check harness and connectors between Seat Position Control ECU and position
sensors (See page
NG
Repair or replace harness or connectors.
OK
Check and replace Seat Position Control
ECU.
N21263
Instrument Panel J/B
Instrument Panel J/B
Stop Light Switch
Seat Position Control ECU
22
S15
STOP
Stop Light
Light Failure Sensor
STOP
1C
G–W
7
1R
G–W
G–W
G–W
W
1
1
2
1R
BS2
G–W
4
2
DI–386
–
DIAGNOSTICS
POWER SEAT CONTROL SYSTEM
538
1997 LEXUS ES300 (RM511U)
Stop Light Switch Circuit
CIRCUIT DESCRIPTION
The stop light switch sends a brake ON or OFF signal to the ECU. When the ECU receives a brake ON signal,
it prohibits return operation of the seat.
WIRING DIAGRAM
INSPECTION PROCEDURE
1
Check stop light operation.
CHECK:
Check that the stop light comes on when the brake pedal is depressed, and turns off when the pedal is re-
leased.
NG
Check stop light circuit (See page
).
OK
DI0GB–01
N21255
Seat Position Control ECU
Connect
(–)
(+)
STOP
22
–
DIAGNOSTICS
POWER SEAT CONTROL SYSTEM
DI–387
539
1997 LEXUS ES300 (RM511U)
2
Check voltage between terminal STOP of Seat Position Control ECU connector
and body ground.
PREPARATION:
Remove Seat Position Control ECU with connectors still con-
nected.
CHECK:
Measure voltage between terminal STOP of Seat Position Con-
trol ECU and body ground when the brake pedal is depressed
and released.
OK:
Brake pedal
Voltage
Depressed
10
∼
14 V
Released
0 V
OK
Proceed to next circuit inspection shown on
matrix chart (See page
NG
Check and repair harness and connector be-
tween Seat Position Control ECU and stop
light switch.
N21264
Instrument Panel J/B
Seat Position Control ECU
G–W
J/C
21
B
Park/Neutral
Position Switch
GAUGE
R–L
J28
IK2
4
1J
10
G–W
G–W
J29
R–L
R–L
IK2
J/C
B
D
F
2
A
A
R–L
7
2
P
S15
BS2
G–W
DI–388
–
DIAGNOSTICS
POWER SEAT CONTROL SYSTEM
540
1997 LEXUS ES300 (RM511U)
Park/Neutral Position Switch Circuit
CIRCUIT DESCRIPTION
The park/neutral position switch detects the P position when the lever is shifted into P and sends a signal
to the ECU. When the return switch is turned ON with the IG SW ON and the shift in P position, the ECU
performs return operation.
WIRING DIAGRAM
INSPECTION PROCEDURE
1
Check shift position indicator.
CHECK:
Check that P lights up on the shift indicator when P position is shifted into, and that P is OFF when shifting
into another position.
NG
Check shift position indicator circuit
(See page
).
NG
DI0GE–01
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст