2008 INFINITI QX56 sensor

RECLINING SENSORADP-73
< COMPONENT DIAGNOSIS >
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RECLINING SENSOR
DescriptionINFOID:0000000001735510
• The reclining motor is installed to the seatback frame.
• The pulse signal is inputted to the driver seat control unit when the reclining is operated.
• The driver seat control unit counts the pulse and calculates the reclining amount of the seat.
Component Function CheckINFOID:0000000001735511
1. CHECK FUNCTION
1. Select “RECLN PULSE” in “Data monitor” mode with CONSULT-III.
2. Check reclining sensor signal under the following conditions.
Is the indication normal?
YES >> INSPECTION END
NO >> Perform diagnosis procedure. Refer to ADP-73, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000001735512
1. CHECK RECLINING SENSOR SIGNAL
1. Turn ignition switch ON.
2. Read voltage signal between driver seat control unit harness connector and ground with oscilloscope.
Is the inspection result normal?
YES >> GO TO 4
NO >> GO TO 2
2. CHECK RECLINING SENSOR CIRCUIT
Monitor item Condition Value
RECLN PULSE Seat recliningOperate (forward)
Change (increase)
Operate (backward) Change (decrease)
Release No change
Te r m i n a l s
Condition Voltage signal
(+)
(–)
Driver
seat con-
trol unit Te r m i -
nal
B202 9 Ground Seat
reclin-
ingOperate
Other
than
above
0 or 5
PIIA4559E
SIIA0692J
Revision: March 2010
2008 QX56

ADP-74
< COMPONENT DIAGNOSIS >
RECLINING SENSOR
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and reclining motor LH.
3. Check continuity between driver seat control unit harness con-nector and reclining 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 SEAT OPERATION
1. Connect driver seat control unit and reclining motor LH connector.
2. Check seat operation (except reclining operation) with memory function.
Is the operation normal?
YES >> Replace reclining motor LH. (Built in seat slide cushion frame.)
NO >> Replace driver seat control unit.
4. 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
connector Terminal Continuity
B202 9
B205 1
Ye s
31 2
Driver seat control unit connector Te r m i n a l
GroundContinuity
B202 9
No
31
LIIA0707E
Revision: March 2010 2008 QX56

LIFTING SENSOR (FRONT)ADP-75
< COMPONENT DIAGNOSIS >
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LIFTING SENSOR (FRONT)
DescriptionINFOID:0000000001735513
• The lifting sensor (front) is installed to the seat slide cushion frame.
• The pulse signal is input to the driver seat control unit when the lifting (front) is operated.
• The driver seat control unit counts the pulse and ca lculates the lifting (front) amount of the seat.
Component Function CheckINFOID:0000000001735514
1.CHECK FUNCTION
1. Select “LIFT FR PULSE” in “Data monitor” mode with CONSULT-III.
2. Check the lifting sensor (front) signal under the following conditions.
Is the indication normal?
YES >> INSPECTION END
NO >> Perform diagnosis procedure. Refer to ADP-75, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000001735515
1. CHECK LIFTING SENSOR (FRONT) SIGNAL
1. Turn ignition switch ON.
2. Read the voltage signal between driver seat control unit harness connector and ground with an oscilloscope.
Is the inspection result normal?
YES >> GO TO 4
NO >> GO TO 2
2. CHECK LIFTING SENSOR (FRONT) CIRCUIT
Monitor item Condition Value
LIFT FR PULSE Seat lifting (front)Operate (up)
Change (increase)
Operate (down) Change (decrease)
Release No change
Te r m i n a l s
ConditionVoltage signal
(+)
(–)
Driver
seat con- trol unit
connector Te r m i -
nal
B202 25 Ground Seat
lifting
(front)Oper-
ate
Other
than
above
0 or 5
PIIA4561E
SIIA0691J
Revision: March 2010
2008 QX56

ADP-76
< COMPONENT DIAGNOSIS >
LIFTING SENSOR (FRONT)
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and lifting motor (front).
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 SEAT OPERATION
1. Connect driver seat control unit and lifting motor (front) connector.
2. Check seat operation [except lifting (front) operation] with memory function.
Is the operation normal?
YES >> Replace lifting motor (front). (Built in seat slide cushion frame.)
NO >> Replace driver seat control unit.
4. 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 l
Lifting motor
(front) connector Terminal Continuity
B202 16
B206 3
Ye s
25 2
31 1
Driver seat control unit connector Te r m i n a l
Ground Continuity
B202 16
No
25
31
LIIA0708E
Revision: March 2010 2008 QX56

LIFTING SENSOR (REAR)ADP-77
< COMPONENT DIAGNOSIS >
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LIFTING SENSOR (REAR)
DescriptionINFOID:0000000001735516
• The lifting sensor (rear) is installed to the seat slide cushion frame.
• The pulse signal is input to the driver seat control unit when the lifting (rear) is operated.
• The driver seat control unit counts the pulse and calculates the lifting (rear) amount of the seat.
Component Function CheckINFOID:0000000001735517
1. CHECK FUNCTION
1. Select “LIFT RR PULSE” in “Data monitor” mode with CONSULT-III.
2. Check lifting sensor (rear) signal under the following conditions.
Is the indication normal?
YES >> INSPECTION END
NO >> Perform diagnosis procedure. Refer to ADP-77, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000001735518
1. CHECK LIFTING SENSOR (REAR) SIGNAL
1. Turn ignition switch OFF.
2. Read voltage signal between driver seat control unit harness connector and ground with oscilloscope.
Is the inspection result normal?
YES >> GO TO 4
NO >> GO TO 2
2. CHECK LIFTING SENSOR (REAR) CIRCUIT
Monitor item Condition Value
LIFT RR PULSE Seat lifting (rear)Operate (up)
Change (increase)
Operate (down) Change (decrease)
Release No change
Te r m i n a l s
ConditionVoltage signal
(+)
(–)
Driver
seat con- trol unit
connector Te r m i -
nal
B202 10 Ground Seat
lifting
(rear)Oper-
ate
Other
than
above
0 or 5
PIIA4563E
SIIA0693J
Revision: March 2010
2008 QX56

ADP-78
< COMPONENT DIAGNOSIS >
LIFTING SENSOR (REAR)
1. Turn ignition switch OFF.
2. Disconnect driver seat control unit and lifting motor (rear).
3. Check the continuity between driver seat control unit harnessconnector and lifting motor (rear) harness connector.
4. Check the continuity between driver seat control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK SEAT OPERATION
1. Connect driver seat control unit and lifting motor (rear) connector.
2. Check the seat operation [except lifti ng (rear) operation] with memory function.
Is the operation normal?
YES >> Replace lifting motor (rear). (Built in seat slide cushion frame.)
NO >> Replace driver seat control unit.
4. 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
B202 10
B207 2
Ye s
16 3
31 1
Driver seat control unit connector Terminal
Ground Continuity
B202 10
No
16
31
LIIA0709E
Revision: March 2010 2008 QX56

TILT SENSORADP-79
< COMPONENT DIAGNOSIS >
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TILT SENSOR
DescriptionINFOID:0000000001754043
• The tilt sensor is installed to the steering column assembly.
• The resistance of tilt sensor is changed according to the up/down position of steering column.
• The terminal voltage of automatic drive positioner c ontrol unit will be changed according to a change of tilt
sensor resistance. Automatic drive positioner control unit calculates the tilt position from the voltage.
Component Function CheckINFOID:0000000001754044
1. CHECK FUNCTION
1. Select “TILT SEN” in “Data monitor” mode with CONSULT-III.
2. Check the tilt sensor signal under the following condition.
Is the indication normal?
YES >> INSPECTION END
NO >> Perform diagnosis procedure. Refer to ADP-79, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000001754045
1. CHECK TILT SENSOR SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between automatic drive positioner connector
and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> GO TO 2
2. CHECK HARNESS CONTINUITY
Monitor item Condition Value
TILT SEN Tilt position Change between
1.2 V (Close to top)
3.4 V (Close to bottom)
Connector Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+) (-)
M33 7 Ground Tilt top position 2
Tilt bottom position
4
LIIA0485E
Revision: March 2010 2008 QX56

ADP-80
< COMPONENT DIAGNOSIS >
TILT SENSOR
1. Disconnect automatic drive positioner control unit and tilt sensor.
2. Check continuity between automatic drive positioner connectorM33 (A), M34 (B) terminals 7, 33, 41 and tilt sensor connector
M85 (C) terminals 2, 3, 4.
3. Check continuity between automatic drive positioner control unit connectors M33 (A), M34 (B) terminals 7, 33, 41 and ground.
OK or NG
OK >> Replace motor. Refer to ST-19, "Removal and Installa-
tion".
NG >> Repair or replace harness.
3. CHECK DOOR MIRROR OPERATION
1. Connect automatic drive positioner control unit connector and tilt sensor.
2. Turn ignition switch ON.
3. Check door mirror operation with memory function.
Is the operation normal?
YES >> Replace tilt sensor. Refer to ST-19, "Removal and Installation".
NO >> Replace automatic drive positioner control unit.
4. 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. 7 - 3
: Continuity should exist.
33 - 2 : Continuity should exist.
41 - 4 : Continuity should exist.
7 - Ground : Continuity should not exist.
33 - Ground : Continuity should not exist.
41 - Ground : Continuity should not exist.
ALJIA0291ZZ
Revision: March 2010 2008 QX56