Infiniti Q45. Manual — part 841
POWER SEAT
SE-119
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 and ground.
OK or NG
OK
>> Check the harness and connector.
NG
>> Repair or replace harness between auto return cancel
switch and ground.
Check Rear Door Switch Circuit
NIS0013Z
WITH HEATED SEAT
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
>> Rear door switch circuit check is OK.
NG
>> GO TO 2.
2.
CHECK DOOR 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
B163 (LH), B363 (RH) terminal 43 and door lock assembly (door
switch) connector D62 (LH), D82(RH) terminal 1.
3.
Check continuity between rear power seat control unit connector
B163 (LH), B363 (RH) terminal 43 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
Connector
Terminal
(Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(–)
B163 (LH)
B363 (RH)
43 (GY/R)
Ground
Rear door open
0
Rear door closed
Battery voltage
PIIA3991E
43 (GY/R)
−
1 (W)
:Continuity should exist
43 (GY/R)
−
Ground
:Continuity should not exist
PIIA3992E
SE-120
POWER SEAT
3.
CHECK DOOR SWITCH
Check continuity between door lock assembly connector as follows.
OK or NG
OK
>> GO TO 4.
NG
>> Replace door lock assembly.
4.
CHECK DOOR SWITCH HARNESS
Check continuity between door lock assembly connector D62 (LH),
D82 (RH) terminal 2 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.
WITHOUT HEATED SEAT
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.
Terminal
Condition
Continuity
1
2
Door switch ON
Yes
Door switch OFF
No
PIIA3993E
2 (B)
−
Ground
:Continuity should exist
PIIA4025E
Connector
Terminal
(Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(–)
B168 (LH)
B368 (RH)
43 (GY/R)
Ground
rear door open
0
rear door closed
Battery voltage
PIIA4023E
POWER SEAT
SE-121
C
D
E
F
G
H
J
K
L
M
A
B
SE
2.
CHECK DOOR 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 and door lock assembly (door
switch) connector D62 (LH), D82(RH) terminal 1.
3.
Check continuity between rear power seat control unit connector
B163 (LH), B363 (RH) terminal 43 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).
3.
CHECK CANCEL SWITCH
Check continuity between door lock assembly connector as follows.
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 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.
43 (GY/R)
−
1 (W)
:Continuity should exist
43 (GY/R)
−
Ground
:Continuity should not exist
PIIA4024E
Terminal
Condition
Continuity
1
2
Door switch ON
Yes
Door switch OFF
No
PIIA3993E
2 (B)
−
Ground
:Continuity should exist
PIIA4025E
SE-122
POWER SEAT
Check Rear Power Seat Sliding Sensor Circuit
NIS00140
WITH HEATED SEAT
1.
CHECK REAR POWER SEAT SLIDING 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 sensor circuit check is OK.
NG
>> GO TO 2.
2.
CHECK REAR POWER SEAT SLIDING SENSOR HARNESS
1.
Disconnect rear power seat control unit connector and rear
power seat sliding motor sensor connector.
2.
Check continuity between rear power seat control unit connector
B163 (LH), B363 (RH) terminal 21, 74 and rear power seat slid-
ing motor connector B164 (LH), B364 (RH) terminal 21, 74.
3.
Check continuity between rear power seat control unit connector
B163 (LH), B363 (RH) terminal 21, 74 and ground.
OK or NG
OK
>> Replace rear power seat sliding motor.
NG
>> Repair or replace harness between rear power seat control unit and rear power seat sliding motor.
Connector
Terminal
(Wire color)
Condition
Signal
(Reference valve)
(+)
(–)
B163 (LH)
B363 (RH)
21
(W/G)
Ground
Rear power
seat switch
(sliding switch)
forward or
backward
PIIA3994E
SIIA0690J
21 (W/G)
−
21 (W/G)
:Continuity should exist.
74 (G/R)
−
74 (G/R)
:Continuity should exist.
21 (W/G)
−
Ground
:Continuity should not exist.
74 (G/R)
−
Ground
:Continuity should not exist.
PIIA3995E
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