Infiniti F50. Manual — part 783
POWER SEAT
SE-123
C
D
E
F
G
H
J
K
L
M
A
B
SE
3.
CHECK REAR POWER SEAT SWITCH
Check continuity between rear power seat switch as follows.
OK or NG
OK
>> GO TO 4.
NG
>> Replace rear power seat switch.
4.
CHECK REAR POWER SEAT SWITCH GROUND CIRCUIT
Check continuity between rear power seat switch connector D55
(LH), D75 (RH) terminal 2 (B) and ground.
OK or NG
OK
>> Replace rear power seat control unit.
NG
>> Repair or replace harness between rear power seat
switch and ground.
Auto Return Cancel Switch Circuit Inspection 1 (Without Heated Seat)
EIS003VH
1.
CHECK AUTO RETURN CANCEL SWITCH POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Check voltage between rear power seat control unit connector
and ground.
OK or NG
OK
>> INSPECTION END.
NG
>> Replace rear power seat control unit.
Terminal
Condition
Continuity
7 (G/Y)
2 (B)
Rear power seat switch (sliding switch)
backward.
YES
Rear power seat switch (sliding switch)
OFF.
NO
8 (OR/L)
2 (B)
Rear power seat switch (sliding switch)
forward.
YES
Rear power seat switch (sliding switch)
OFF.
NO
PIIA3985E
2 (B)
−
Ground
:Continuity should exist
PIIA3986E
Con-
nector
Terminal
(Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(–)
B168
(LH)
B368
(RH)
36 (LG/R)
Ground
Auto return cancel switch ON
rear door open.
5
Other than above.
0
PIIA4021E
SE-124
POWER SEAT
2.
CHECK AUTO CANCEL SWITCH HARNESS
1.
Disconnect rear power seat control unit connector and auto
return cancel switch connector.
2.
Check continuity between rear power seat control unit connector
B168 (LH), B368 (RH) terminal 36 (LG/R) and auto return cancel
switch connector B504 terminal 1 (BR).
3.
Check continuity between rear power seat control unit connector
B168 (LH), B368 (RH) terminal 36 (LG/R) and ground.
OK or NG
OK
>> Check the harness and connector.
NG
>> Repair or replace harness between rear power seat control unit and auto return cancel switch.
Auto Return Cancel Switch Circuit Inspection 2 (Without Heated Seat)
EIS0040R
1.
CHECK REAR AUTO RETURN CANCEL SWITCH HARNESS
1.
Turn ignition switch OFF.
2.
Disconnect rear power seat control unit connector and auto
return cancel switch connector.
3.
Check continuity between rear power seat control unit connector
B168 (LH), B368 (RH) terminal 36 (LG/R) and auto return cancel
switch connector B504 terminal 1 (BR).
4.
Check continuity between rear power seat control unit connector
B168 (LH), B368 (RH) terminal 36 (LG/R) and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace harness between rear power seat control unit and auto return cancel switch.
2.
CHECK AUTO RETURN CANCEL SWITCH
Check continuity between auto cancel switch as follows.
OK or NG
OK
>> GO TO 3.
NG
>> Replace auto return cancel switch.
36 (LG/R)
−
1 (BR)
:Continuity should exist
36 (LG/R)
−
Ground
:Continuity should not exist
PIIA4022E
36 (LG/R)
−
1 (BR)
:Continuity should exist
36 (LG/R)
−
Ground
:Continuity should not exist
PIIA4022E
Terminal
Condition
Continuity
1 (BR)
2 (B)
Auto return cancel switch cancelled.
YES
Auto return cancel switch ON.
NO
PIIA3989E
POWER SEAT
SE-125
C
D
E
F
G
H
J
K
L
M
A
B
SE
3.
CHECK AUTO RETURN CANCEL SWITCH GROUND HARNESS
Check continuity between auto return cancel switch connector B504
terminal 2 (B) and ground.
OK or NG
OK
>> Check the harness and connector.
NG
>> Repair or replace harness between auto return cancel
switch and ground.
Rear Door Switch Circuit Inspection (Without Heated Seat)
EIS003VI
1.
CHECK REAR DOOR SWITCH POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Check voltage between rear power seat control unit connector
and ground.
OK or NG
OK
>> Replace door switch circuit check is OK.
NG
>> GO TO 2.
2.
CHECK REAR POWER SEAT SWITCH HARNESS
1.
Disconnect rear power seat control unit connector and door lock
assembly (door switch) connector.
2.
Check continuity between rear power seat control unit connector
B168 (LH), B368 (RH) terminal 43 (GY/R) and door lock assem-
bly (door switch) connector D62 (LH), D82(RH) terminal 1 (W).
3.
Check continuity between rear power seat control unit connector
B163 (LH), B363 (RH) terminal 43 (GY/R) and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness between rear power seat control unit and door lock assembly (door
switch).
2 (B)
−
Ground
:Continuity should exist
PIIA3990E
Con-
nector
Terminal
(Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(–)
B168
(LH),
B368
(RH)
43 (GY/R)
Ground
rear door (LH) open.
0
rear door (LH) closed.
Battery voltage
PIIA4023E
43 (GY/R)
−
1 (W)
:Continuity should exist
43 (GY/R)
−
Ground
:Continuity should not exist
PIIA4024E
SE-126
POWER SEAT
3.
CHECK CANCEL SWITCH
Check continuity between door lock assembly connector.
OK or NG
OK
>> GO TO 4.
NG
>> Replace door lock assembly.
4.
CHECK REAR POWER SEAT SWITCH HARNESS
Check continuity between door lock assembly connector D62 (LH),
D82 (RH) terminal 2 (B) and ground.
OK or NG
OK
>> Check the condition of the harness and connector.
NG
>> Repair or replace harness between door lock assembly
and ground.
Rear Power Seat Sliding Sensor Circuit Inspection (Without Heated Seat)
EIS003VJ
1.
CHECK REAR POWER SEAT SLIDING MOTOR SENSOR POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Check signal between rear power seat control unit connector
and ground with oscilloscope.
OK or NG
OK
>> Rear power seat sliding motor sensor circuit check is OK.
NG
>> GO TO 2.
Terminal
Condition
Continuity
1 (W)
2 (B)
Door switch ON.
YES
Door switch OFF.
NO
PIIA3993E
2 (B)
−
Ground
:Continuity should exist
PIIA4025E
Con-
nec-
tor
Terminal
(Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(–)
B168
(LH),
B368
(RH)
21
(W/G)
Ground
Rear power seat
switch (sliding switch)
forward or backward.
PIIA4026E
SIIA0690J
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