2009 INFINITI QX56 200

RECLINING SENSORADP-77
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
1. Disconnect driver seat control unit and reclining motor LH.
2. Check continuity between driver seat control unit harness con-
nector and reclining motor LH 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 SEAT OPERATION
1. Connect driver seat control unit and reclining motor LH.
2. Check seat operation (except reclin ing operation) with memory function.
Is the operation normal?
YES >> Replace reclining motor LH. (Built in seatback assembly). Refer to SE-68, "Disassembly and
Assembly".
NO >> Replace driver seat control unit. Refer to ADP-165, "Removal and Installation"
.
4. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "Intermittent Incident"
.
Is the inspection result normal?
YES >> Replace driver seat control unit. Refer to ADP-165, "Removal and Installation".
NO >> Repair or replace the malfunctioning part.
Driver seat control
unit connector Te r m i n a l
Reclining motor
connector Terminal Continuity
B202 (A) 9
B205 (B) 1
Ye s
31 4
Driver seat control unit connector Te r m i n a l
GroundContinuity
B202 (A) 9
No
31
ALJIA0318ZZ
Revision: December 20092009 QX56

ADP-78
< COMPONENT DIAGNOSIS >
LIFTING SENSOR (FRONT)
LIFTING SENSOR (FRONT)
DescriptionINFOID:0000000003775603
 The lifting sensor (front) is installed to the power seat frame assembly.
 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:0000000003775604
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-78, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000003775605
1. CHECK LIFTING SENSOR (FRONT) SIGNAL
1. Turn ignition switch OFF.
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 SENS OR (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
Condition Voltage 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: December 20092009 QX56

LIFTING SENSOR (FRONT)ADP-79
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
1. Disconnect driver seat control unit and lifting motor (front).
2. Check continuity between driver seat control unit harness con-
nector and lifting motor (front) 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 SEAT OPERATION
1. Connect driver seat control unit and lifting motor (front).
2. Check seat operation [except lifting (f ront) operation] with memory function.
Is the operation normal?
YES >> Replace lifting motor (front). (Built in power seat frame assembly). Refer to SE-68, "Disassembly
and Assembly".
NO >> Replace driver seat control unit. Refer to ADP-165, "Removal and Installation"
.
4. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "Intermittent Incident"
.
Is the inspection result normal?
YES >> Replace driver seat control unit. Refer to ADP-165, "Removal and Installation".
NO >> Repair or replace the malfunctioning part.
Driver seat control
unit connector Te r m i n a lLifting motor
(front) connector Terminal Continuity
B202 (A) 16
B206 (B) 3
Ye s
25 4
31 2
Driver seat control unit connector Te r m i n a l
Ground Continuity
B202 (A) 16
No
25
31
ALJIA0319ZZ
Revision: December 20092009 QX56

ADP-80
< COMPONENT DIAGNOSIS >
LIFTING SENSOR (REAR)
LIFTING SENSOR (REAR)
DescriptionINFOID:0000000003775606
 The lifting sensor (rear) is installed to the power seat frame assembly.
 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 ca lculates the lifting (rear) amount of the seat.
Component Function CheckINFOID:0000000003775607
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-80, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000003775608
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
Condition Voltage 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: December 20092009 QX56

LIFTING SENSOR (REAR)ADP-81
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
1. Disconnect driver seat control unit and lifting motor (rear).
2. Check the continuity between driver seat control unit harness connector and lifting motor (rear) harness connector.
3. 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).
2. Check the seat operation [except lifting (rear) operation] with memory function.
Is the operation normal?
YES >> Replace lifting motor (rear). (Built in power seat frame assembly). Refer to SE-68, "Disassembly
and Assembly".
NO >> Replace driver seat control unit. Refer to ADP-165, "Removal and Installation"
.
4. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "Intermittent Incident"
.
Is the inspection result normal?
YES >> Replace driver seat control unit. Refer to ADP-165, "Removal and Installation".
NO >> Repair or replace the malfunctioning part.
Driver seat control
unit connector Te r m i n a l
Lifting motor (rear)
connector Terminal Continuity
B202 (A) 10
B207 (B) 4
Ye s
16 3
31 2
Driver seat control unit connector Te r m i n a l
Ground Continuity
B202 (A) 10
No
16
31
ALJIA0320ZZ
Revision: December 20092009 QX56

ADP-82
< COMPONENT DIAGNOSIS >
TILT SENSOR
TILT SENSOR
DescriptionINFOID:0000000003775609
 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 contro l unit calculates the tilt position from the voltage.
Component Function CheckINFOID:0000000003775610
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-82, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000003775611
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: December 20092009 QX56

TILT SENSORADP-83
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
1. Disconnect automatic drive positi oner control unit and tilt motor
assembly.
2. Check continuity between autom atic drive positioner connector
M33 (A), M34 (B) terminals 7, 33, 41 and tilt motor assembly
connector M85 (C) terminals 2, 3, 4.
3. Check continuity between automat ic drive positioner control unit
connectors M33 (A), M34 (B ) terminals 7, 33, 41 and ground.
Is the inspection result normal?
YES >> Replace tilt motor assembly. Refer to ST-19, "Removal
and Installation".
NO >> Repair or replace harness.
3. CHECK DOOR MIRROR OPERATION
1. Connect automatic drive positioner c ontrol unit and tilt motor assembly.
2. Turn ignition switch ON.
3. Check door mirror operation with memory function.
Is the operation normal?
YES >> Replace tilt motor assembly. Refer to ST-19, "Removal and Installation".
NO >> Replace automatic drive positioner control unit. Refer to ADP-166, "Removal and Installation"
.
4. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "Intermittent Incident"
.
Is the inspection result normal?
YES >> Replace automatic drive posit ioner control unit. Refer to ADP-166, "Removal and Installation".
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: December 20092009 QX56

ADP-84
< COMPONENT DIAGNOSIS >
PEDAL ADJUSTING SENSOR
PEDAL ADJUSTING SENSOR
DescriptionINFOID:0000000003775612
 The pedal adjusting sensor is installed to the pedal assembly.
 The resistance of pedal adjusting sensor is changed according to the forward/backward position of pedalassembly.
 The terminal voltage of automatic drive positioner control unit will be changed according to a change of
pedal adjusting sensor resistance. Automatic drive pos itioner control unit calculates the pedal assembly
position from the voltage.
Component Function CheckINFOID:0000000003775613
1. CHECK FUNCTION
1. Select “PEDAL SEN” in “Dat a monitor” mode with CONSULT-III.
2. Check the pedal sensor signal under the following condition.
Is the indication normal?
YES >> Inspection End.
NO >> Perform diagnosis procedure. Refer to ADP-84, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000003775614
1. CHECK PEDAL ADJUSTING SENSOR SIGNAL
1. Turn ignition switch OFF.
2. Check voltage between automatic drive positioner control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> GO TO 2
2. CHECK PEDAL ADJUSTING SENSOR CIRCUIT
Monitor item Condition Value
PEDAL SEN Pedal position Forward 0.5V
Backward 4.5V
Te r m i n a l
ConditionVoltage (V)
(Approx.)
(+)
(-)
Automatic
drive position- er control unit Te r m i n a l
M33 8 Ground Pedal as-
sembly
positionForward 0.5
Backward 4.5
PIIA4569E
Revision: December 20092009 QX56