Infiniti G37 Coupe. Manual — part 1091
SE-32
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
Is the inspection result normal?
YES
>> GO TO 2.
NO
>>
Check the following.
• Repair or replace harness between driver seat control unit and fuse block (J/B).
• Circuit breaker
2.
CHECK GROUND CIRCUIT
Check continuity between the driver seat control unit harness connector and ground.
Is the inspection result normal?
YES
>> Driver seat control unit power supply and ground circuit are OK.
NO
>> Repair or replace harness between driver seat control unit and ground.
DRIVER SEAT CONTROL UNIT : Special Repair Requirement
INFOID:0000000001694218
1.
PERFORM ADDITIONAL SERVICE
Perform additional service when removing battery negative terminal.
>> Refer to
SE-7, "ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL :
.
PASSENGER SEAT CONTROL UNIT
PASSENGER SEAT CONTROL UNIT : Diagnosis Procedure
INFOID:0000000001694219
NOTE:
Do not disconnect the battery negative terminal and the passenger seat control unit connector until DTC is
confirmed with CONSULT-III.
1.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Check voltage between passenger seat control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>>
Check the following.
• Repair or replace harness between passenger seat control unit and fuse block (J/B).
• Repair or replace harness between passenger seat control unit and BCM.
2.
CHECK GROUND CIRCUIT
Terminals
Voltage (V)
(Approx.)
(+)
(–)
Driver seat control unit connector
Terminal
B504
33
Ground
Battery voltage
40
Driver seat control unit
connector
Terminal
Ground
Continuity
B503
32
Existed
B504
48
Terminals
Voltage (V)
(Approx.)
(+)
(–)
Passenger seat control unit con-
nector
Terminal
B553
33
Ground
Battery voltage
40
POWER SUPPLY AND GROUND CIRCUIT
SE-33
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
SE
N
O
P
Check continuity between the passenger seat control unit harness connector and ground.
Is the inspection result normal?
YES
>> Passenger seat control unit power supply and ground circuit are OK.
NO
>> Repair or replace harness between driver seat control unit and ground.
PASSENGER SEAT CONTROL UNIT : Special Repair Requirement
INFOID:0000000001694220
1.
PERFORM ADDITIONAL SERVICE
Perform additional service when removing battery negative terminal.
>> Refer to
SE-7, "ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL :
.
Passenger seat control unit
connector
Terminal
Ground
Continuity
B552
32
Existed
B553
48
SE-34
< COMPONENT DIAGNOSIS >
POWER SEAT SWITCH
POWER SEAT SWITCH
DRIVER SIDE
DRIVER SIDE : Description
INFOID:0000000001694093
With a built-in reclining switch, sliding switch and lifting switch, power seat switch controls the power supplied
to each motor.
DRIVER SIDE : Component Function Check
INFOID:0000000001694094
1.
CHECK POWER SEAT SWITCH FUNCTION
Check power seat operation with power seat switch.
Is the inspection results normal?
YES
>> Power seat switch is OK.
NO
>> Refer to
SE-34, "DRIVER SIDE : Diagnosis Procedure"
..
DRIVER SIDE : Diagnosis Procedure
INFOID:0000000001694095
1.
CHECK CIRCUIT BREAKER AND FUSIBLE LINK
Check that following circuit breaker and fusible link.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace circuit breaker or fusible link after repairing affected circuit.
2.
CHECK POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect power seat switch connector.
3.
Check continuity between power seat switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness.
3.
CHECK GROUND CIRCUIT
Check continuity between power seat switch and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace harness.
4.
CHECK POWER SEAT SWITCH
Check power seat switch function.
Refer to
SE-35, "DRIVER SIDE : Component Inspection"
Is the inspection result normal?
Terminal No.
Signal name
Item
33
Battery power supply
Circuit breaker
Fusible link K
Power seat switch
Ground
Voltage (V)
(Approx.)
Connector
Terminal
B511
33
Ground
Battery voltage
Power seat switch
Ground
Continuity
Connector
Terminal
B511
48
Ground
Existed
POWER SEAT SWITCH
SE-35
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
SE
N
O
P
YES
>> Power seat switch is OK.
NO
>> Replace power seat switch.
DRIVER SIDE : Component Inspection
INFOID:0000000001694096
1.
CHECK POWER SEAT SWITCH
1.
Turn ignition switch OFF.
2.
Remove power seat switch.
3.
Detect the malfunctioning switch.
Which switch is malfunctioning?
RECLINING SWITCH>>GO TO 2.
SLIDING SWITCH>>GO TO 3.
LIFTING SWITCH (FRONT)>>GO TO 4.
LIFTING SWITCH (REAR)>>GO TO 5.
2.
CHECK RECLINING SWITCH
Check continuity between power seat switch terminals.
Is the inspection result normal?
YES
>> Power seat switch (reclining switch) is OK.
NO
>> Replace power seat switch. Refer to
SE-167, "Removal and Installation"
3.
CHECK SLIDING SWITCH
Check continuity between power seat switch terminals.
Is the inspection result normal?
YES
>> Power seat switch (sliding switch) is OK.
NO
>> Replace power seat switch. Refer to
SE-167, "Removal and Installation"
4.
CHECK LIFTING SWITCH (FRONT)
Check continuity between power seat switch terminals.
Terminal
Switch condition
Continuity
27
33
Forward
Existed
Neutral
Not existed
Backward
Not existed
12
Forward
Not existed
Neutral
Not existed
Backward
Existed
27
48
Forward
Not existed
Neutral
Not existed
Backward
Existed
12
Forward
Existed
Neutral
Not existed
Backward
Not existed
Terminal
Switch condition
Continuity
22
33
Forward
Existed
Neutral
Not existed
Backward
Not existed
23
Forward
Not existed
Neutral
Not existed
Backward
Existed
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