INFINITI QX56 2008 Factory Service Manual

SLIDING MOTORADP-87
< COMPONENT DIAGNOSIS >
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SLIDING MOTOR
DescriptionINFOID:0000000001735528
• The sliding motor LH is installed to the seat cushion frame.
• The sliding motor LH is installed with the driver seat control unit.
• The seat is slid forward/backward by changing the rotation direction of sliding motor LH.
Component Function CheckINFOID:0000000001735529
1. CHECK FUNCTION
1. Select “SEAT SLIDE” in “Active test” mode with CONSULT-III.
2. Check the sliding motor LH operation.
Is the operation of relevant parts normal?
YES >> INSPECTION END
NO >> Perform diagnosis procedure. Refer to ADP-87, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000001735530
1. CHECK SLIDING MOTOR LH POWER SUPPLY
1. Turn the ignition switch ACC.
2. Perform “Active test” (“SEA T SLIDE”) with CONSULT-lll
3. Check voltage between driver s eat control unit harness connec-
tor and ground.
Is the inspection result normal?
YES >> Replace sliding motor LH. (Built in seat slide cushion frame.)
NO >> GO TO 2
2. CHECK SLIDING MOTOR LH CIRCUIT
Test Item Description
SEAT SLIDE OFF
Seat sliding Stop
FR Forward
RR Backward
Te r m i n a l
Test ItemVoltage (V)
(Approx.)
(+)
(-)
Driver seat
control unit connector Te r m i n a l
B203 35
Ground SEAT
SLIDE OFF
0
FR (forward) Battery voltage
RR (backward) 0
42 OFF
0
FR (forward) 0
RR (backward) Battery voltage
PIIA4801E
Revision: March 2010 2008 QX56

ADP-88
< COMPONENT DIAGNOSIS >
SLIDING MOTOR
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and sliding motor LH.
3. Check continuity between driver seat control unit harness con-nector and sliding motor LH harness connector.
4. Check continuity between driver seat control unit harness con- nector and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace driver seat control unit.
NO >> Repair or replace the malfunctioning part.
Driver seat control unit connector Te r m i n a lSliding motor LH
connector Terminal Continuity
B203 35
B204 6
Ye s
42 4
Driver seat control unit connector Te r m i n a l
GroundContinuity
B203 35
No
42
LIIA0696E
Revision: March 2010 2008 QX56

RECLINING MOTORADP-89
< COMPONENT DIAGNOSIS >
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RECLINING MOTOR
DescriptionINFOID:0000000001735531
• The reclining motor LH is installed to the seat back frame.
• The reclining motor LH is activated with the driver seat control unit.
• The seatback is reclined forward/backward by changing the rotation direction of reclining motor LH.
Component Function CheckINFOID:0000000001735532
1. CHECK FUNCTION
1. Select “SEAT RECLINING” in “Active test” mode with CONSULT-III.
2. Check the reclining motor LH operation.
Is the operation of relevant parts normal?
YES >> INSPECTION END
NO >> Perform diagnosis procedure. Refer to ADP-89, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000001735533
1. CHECK RECLINING MOTOR LH POWER SUPPLY
1. Turn the ignition switch ACC.
2. Perform “Active test” (“SEAT RECLINING”) with CONSULT-lll
3. Check voltage between driver s eat control unit harness connec-
tor and ground.
Is the inspection result normal?
YES >> Replace reclining motor LH. (Built in seat back frame.)
NO >> GO TO 2
2. CHECK RECLINING MOTOR LH CIRCUIT
Test Item Description
SEAT RECLINING OFF
Seat reclining St op
FR Forward
RR Backward
Te r m i n a l
Test ItemVoltage (V)
(Approx.)
(+)
(-)
Driver
seat con- trol unit
connector Te r m i n a l
B203 36
Ground SEAT RE-
CLINING OFF 0
FR (forward) Battery voltage
RR (backward) 0
44 OFF 0
FR (forward) 0
RR (backward) Battery voltage
PIIA4802E
Revision: March 2010
2008 QX56

ADP-90
< COMPONENT DIAGNOSIS >
RECLINING MOTOR
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit connector and recling motorLH.
3. Check continuity between driver seat control unit harness con- nector and reclining motor harness connector.
4. Check continuity between driver seat control unit harness con- nector and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace driver seat control unit.
NO >> Repair or replace the malfunctioning part.
Driver seat control unit connector Te r m i n a lReclining motor LH
connector Terminal Continuity
B203 36
B205 4
Ye s
44 3
Driver seat control unit connector Te r m i n a l
Ground Continuity
B203 36
No
44
LIIA0697E
Revision: March 2010 2008 QX56

LIFTING MOTOR (FRONT)ADP-91
< COMPONENT DIAGNOSIS >
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LIFTING MOTOR (FRONT)
DescriptionINFOID:0000000001735534
• The lifting motor (front) is installed to the seat slide cushion frame.
• The lifting motor (front) is activat ed with the driver seat control unit.
• The lifter (front) is moved upward/downward by changi ng the rotation direction of lifting motor (front).
Component Function CheckINFOID:0000000001735535
1. CHECK FUNCTION
1. Select “SEAT LIFTER FR” in “A ctive test” mode with CONSULT-III.
2. Check the lifting motor (front) operation.
Is the operation of relevant parts normal?
YES >> INSPECTION END
NO >> Perform diagnosis procedure. Refer to ADP-91, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000001735536
1. CHECK LIFTING MOTOR (FRONT) POWER SUPPLY
1. Turn the ignition switch ACC.
2. Perform “Active test” (“SEAT LIFTER FR”) with CONSULT-lll.
3. Check voltage between driver s eat control unit harness connec-
tor and ground.
Is the inspection result normal?
YES >> Replace lifting motor (front). (Built in seat slide cushion frame.)
NO >> GO TO 2
2. CHECK LIFTING MOTOR (FRONT) CIRCUIT
Test Item Description
SEAT LIFTER FR OFF
Seat lifting (front) St op
UP Upward
DWN Downward
Te r m i n a l
Te s t I t e mVoltage (V)
(Approx.)
(+)
(-)
Driver seat
control unit connector Te r m i n a l
B203 37
Ground SEAT
LIFTER
FR OFF
0
UP 0
DWN (down) Battery voltage
45 OFF
0
UP Battery voltage
DWN (down) 0
PIIA4805E
Revision: March 2010 2008 QX56

ADP-92
< COMPONENT DIAGNOSIS >
LIFTING MOTOR (FRONT)
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and lifting motor (front) con-nectors.
3. Check continuity between driver seat control unit harness con- nector and lifting motor (front) harness connector.
4. Check continuity between driver seat control unit harness con- nector and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace driver seat control unit.
NO >> Repair or replace the malfunctioning part.
Driver seat control unit connector Te r m i n a lLifting motor (front)
connector Terminal Continuity
B203 37
B206 6
Ye s
45 4
Driver seat control unit connector Terminal
GroundContinuity
B203 37
No
45
LIIA0698E
Revision: March 2010 2008 QX56

LIFTING MOTOR (REAR)ADP-93
< COMPONENT DIAGNOSIS >
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LIFTING MOTOR (REAR)
DescriptionINFOID:0000000001735537
• The lifting motor (rear) is installed to the seat slide cushion frame.
• The lifting motor (rear) is activated with the driver seat control unit.
• The seat lifter (rear) is moved upward/downward by c hanging the rotation direction of lifting motor (rear).
Component Function CheckINFOID:0000000001735538
1. CHECK FUNCTION
1. Select “SEAT LIFTER RR” in “Act ive test” mode with CONSULT-III.
2. Check the lifting motor (rear) operation.
Is the operation of relevant parts normal?
YES >> INSPECTION END
NO >> Perform diagnosis procedure. Refer to ADP-93, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000001735539
1. CHECK LIFTING MOTOR (REAR) POWER SUPPLY
1. Turn the ignition switch OFF.
2. Perform “Active test” (“SEAT LIFTER RR”) with CONSULT-lll
3. Check voltage between driver s eat control unit harness connec-
tor and ground.
Is the inspection result normal?
YES >> Replace lifting motor (rear). (Built in seat slide cushion frame.)
NO >> GO TO 2
2. CHECK LIFTING MOTOR (REAR) CIRCUIT
Test Item Description
SEAT LIFTER RR OFF
Seat lifting (rear) Stop
UP Upward
DWN Downward
Te r m i n a l
Test ItemVoltage (V)
(Approx.)
(+)
(-)
Driver seat
control unit connector Te r m i n a l
B203 38
Ground SEAT
LIFTER
RROFF
0
UP Battery voltage
DWN (down) 0
39 OFF
0
UP 0
DWN (down) Battery voltage
PIIA4804E
Revision: March 2010 2008 QX56

ADP-94
< COMPONENT DIAGNOSIS >
LIFTING MOTOR (REAR)
1. Disconnect driver seat control unit connector and lifting motor(rear).
2. Check continuity between driver seat control unit harness con-
nector and lifting motor (rear) harness connector.
3. Check continuity between driver seat control unit harness con- nector and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace driver seat control unit.
NO >> Repair or replace the malfunctioning part.
Driver seat control unit connector Te r m i n a lLifting motor (rear)
connector Terminal Continuity
B203 38
B207 6
Ye s
39 4
Driver seat control unit connector Te r m i n a l
GroundContinuity
B203 38
No
39
LIIA0699E
Revision: March 2010 2008 QX56

TILT MOTORADP-95
< COMPONENT DIAGNOSIS >
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TILT MOTOR
DescriptionINFOID:0000000001754046
• The tilt motor is installed to the steering column assembly.
• The tilt motor is activated with the automatic drive positioner control unit.
• The steering column is tilted upward/downward by changing the rotation direction of tilt motor.
Component Function CheckINFOID:0000000001754047
1.CHECK FUNCTION
1. Select “TILT MOTOR” in “Act ive test” mode with CONSULT-III.
2. Check the tilt motor operation.
Is the operation of relevant parts normal?
YES >> INSPECTION END
NO >> Perform diagnosis procedure. Refer to ADP-95, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000001754048
1. CHECK TILT MOTOR HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect automatic drive positioner control unit and tilt motor.
3. Check continuity between automat ic drive positioner control unit
connector M34 (A) terminals 35, 42 and tilt motor connector M86
(B) terminals 1, 5.
4. Check continuity between automat ic drive positioner control unit
connector M34 (A) terminals 35, 42 and ground.
OK or NG
OK >> GO TO 2
NG >> Repair or replace harness.
2. CHECK AUTOMATIC DRIVE POSITION ER CONTROL UNIT OUTPUT SIGNAL
1. Connect the automatic drive positioner control unit connector and tilt motor.
2. Check voltage between automatic drive positioner control unit
connector and ground.
Test item Description
TILT MOTOR OFF
Steering tilt St op
UP Upward
DWN Downward
35 - 1: Continuity should exist.
42 - 5 : Continuity should exist.
35 - Ground : Continuity should not exist.
42 - Ground : Continuity should not exist.
ALJIA0293ZZ
LIIA0482E
Revision: March 2010 2008 QX56

ADP-96
< COMPONENT DIAGNOSIS >
TILT MOTOR
OK or NG
OK >> Replace tilt motor. Refer to ST-19, "Removal and Installation".
NG >> GO TO 3
3. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace automatic drive positioner control unit.
NO >> Repair or replace the malfunctioning part.
Connector Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M34 35
Ground ADP steering switch ON
(UP operation)
Battery voltage
Other than above 0
42 ADP steering switch ON
(DOWN operation)
Battery voltage
Other than above 0
Revision: March 2010 2008 QX56