INFINITI QX56 2010 Factory Service Manual

LIFTING SENSOR (REAR)ADP-87
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
LIFTING SENSOR (REAR)
DescriptionINFOID:0000000005147535
• 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 calculates the lifting (rear) amount of the seat.
Component Function CheckINFOID:0000000005147536
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-87, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000005147537
Regarding Wiring Diagram information, refer to ADP-119, "Wiring Diagram".
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: April 20092010 QX56

ADP-88
< COMPONENT DIAGNOSIS >
LIFTING SENSOR (REAR)
1. Disconnect driver seat control unit and lifting motor (rear).
2. Check the continuity between driver seat control unit harnessconnector 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-69, "Disassembly
and Assembly".
NO >> Replace driver seat control unit. Refer to ADP-174, "
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-174, "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 Terminal
Ground Continuity
B202 (A) 10
No
16
31
ALJIA0320ZZ
Revision: April 20092010 QX56

TILT SENSORADP-89
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
TILT SENSOR
DescriptionINFOID:0000000005147538
• 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:0000000005147539
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-89, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000005147540
Regarding Wiring Diagram information, refer to ADP-138, "Wiring Diagram".
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: April 20092010 QX56

ADP-90
< COMPONENT DIAGNOSIS >
TILT SENSOR
1. Disconnect automatic drive positioner control unit and tilt motorassembly.
2. Check continuity between automatic 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 automatic 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 control 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 posit ioner control unit. Refer to ADP-175, "
Removal and Installation".
4. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace automatic drive positioner control unit. Refer to ADP-175, "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: April 20092010 QX56

PEDAL ADJUSTING SENSORADP-91
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
PEDAL ADJUSTING SENSOR
DescriptionINFOID:0000000005147541
• The pedal adjusting sensor is installed to the pedal assembly.
• The resistance of pedal adjusting sensor is changed ac cording to the forward/backward position of pedal
assembly.
• 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:0000000005147542
1. CHECK FUNCTION
1. Select “PEDAL SEN” in “Data 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-91, "
DiagnosisProcedure".
Diagnosis ProcedureINFOID:0000000005147543
Regarding Wiring Diagram information, refer to ADP-138, "Wiring Diagram".
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 ConditionValue
PEDAL SEN Pedal positionForward
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: April 20092010 QX56

ADP-92
< COMPONENT DIAGNOSIS >
PEDAL ADJUSTING SENSOR
1. Disconect automatic drive positioner control unit and pedaladjusting motor assembly.
2. Check continuity between automat ic drive positioner control unit
harnnes connector and pedal adjusting motor assembly harness
connector.
3. Check continuity between automatic drive positioner control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK DOOR MIRROR OPERATION
1. Connect automatic drive positioner control unit and pedal adjusting motor assembly.
2. Turn ignition switch ON.
3. Check door mirror operation with memory function.
Is the operation normal?
YES >> Replace pedal adjusting motor assembly. Refer to ADP-178, "Removal and Installation".
NO >> Replace automatic drive posit ioner control unit. Refer to ADP-175, "
Removal and Installation".
4. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace automatic drive positioner control unit. Refer to ADP-175, "Removal and Installation".
NO >> Repair or replace the malfunctioning part.
Automatic drive posi-
tioner
control unit connector Te r m i n a lPedal adjusting
motor assembly connector Terminal Continuity
M33 (A) 8
E110 (B) 4
Ye s
M34 (C) 33
3
41 5
Automatic drive positioner control unit connector Te r m i n a l
Ground Continuity
M33 (A) 8
No
M34 (C) 33
41
ALJIA0327ZZ
Revision: April 20092010 QX56

MIRROR SENSORADP-93
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
MIRROR SENSOR
DRIVER SIDE
DRIVER SIDE : DescriptionINFOID:0000000005147544
• The mirror sensor LH is installed to the door mirror actuator LH.
• The resistance of 2 sensors (horizontal and vert ical) is changed when the door mirror LH is operated.
• Automatic drive positioner control uni t calculates the door mirror position according to the change of the volt-
age of 2 sensor input terminals.
DRIVER SIDE : Comp onent Function CheckINFOID:0000000005147545
1. CHECK FUNCTION
1. Select “MIR/SEN LH U-D”, “MIR/SEN LH R- L” in “Data monitor” with CONSULT-III.
2. Check mirror sensor (driver side) signal under the following condition.
Is the indication normal?
YES >> Inspection End.
NO >> Perform diagnosis procedure. Refer to ADP-93, "
DRIVER SIDE : DiagnosisProcedure".
DRIVER SIDE : Diagnosis ProcedureINFOID:0000000005147546
Regarding Wiring Diagram information, refer to ADP-138, "Wiring Diagram".
1. CHECK DOOR MIRROR LH SENSOR SIGNAL
1. Turn ignition switch to ACC.
2. Check voltage between door mirror LH harness connector and ground.
Is the inspection result normal?
YES >> GO TO 5
NO >> GO TO 2
2. CHECK DOOR MIRROR LH SENSOR CIRCUIT 1
Monitor item ConditionValue
MIR/SEN LH U-D Door mirror LHClose to peak
3.4V
Close to valley 0.6V
MIR/SEN LH R-L Close to right edge
3.4V
Close to left edge 0.6V
Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+)
(–)
Door mirror
LH connector Te r m i n a l
D4 7
Ground Door
mirror
LHClose to peak
3.4
Close to valley 0.6
8 Close to right edge 3.4
Close to left edge 0.6
LIIA1482E
Revision: April 20092010 QX56

ADP-94
< COMPONENT DIAGNOSIS >
MIRROR SENSOR
1. Turn ignition switch OFF.
2. Disconnect automatic drive positioner control unit and door mir-
ror LH.
3. Check continuity between automatic drive positioner control unit harness connector and door mirror LH harness connector.
4. Check continuity between automatic drive positioner control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK DOOR MIRROR LH SENSOR CIRCUIT 2
1. Check continuity between automatic drive positioner control unit harness connector and door mirror LH harness connector.
2. Check continuity between automatic drive positioner control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4. CHECK PEDAL ADJUSTING OPERATION
1. Connect driver seat control unit and door mirror LH.
2. Turn ignition switch ON.
3. Check pedal adjusting operation with memory function.
Is the operation normal?
YES >> Replace door mirror actuator LH. Refer to MIR-19, "Mirror Actuator".
NO >> Replace automatic drive posit ioner control unit. Refer to ADP-175, "
Removal and Installation".
5. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace automatic drive positioner control unit. Refer to ADP-175, "Removal and Installation".
NO >> Repair or replace the malfunctioning part.
Automatic drive
positioner control unit connector Te r m i n a l
Door mirror LH
connector Terminal Continuity
M33 6
D4 7
Ye s
22 8
Automatic drive positioner control unit connector Te r m i n a l
Ground Continuity
M33 6
No
22
LIIA1484E
Automatic drive
positioner control unit connector Te r m i n a l
Door mirror LH
connector Terminal Continuity
M34 33
D4 5
Ye s
41 6
Automatic drive positioner control unit connector Te r m i n a l
GroundContinuity
M34 33
No
41
LIIA1483E
Revision: April 20092010 QX56

MIRROR SENSORADP-95
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
ADP
N
O P
PASSENGER SIDE
PASSENGER SIDE : DescriptionINFOID:0000000005147547
• The mirror sensor RH is installed to the door mirror actuator RH.
• The resistance of 2 sensors (horizontal and vert ical) is changed when the door mirror RH is operated.
• Automatic drive positioner control uni t calculates the door mirror position according to the change of the volt-
age of 2 sensor input terminals.
PASSENGER SIDE : Co mponent Function CheckINFOID:0000000005147548
1. CHECK FUNCTION
1. Select “MIR/SEN RH U-D”, “MIR/SEN RH R-L” in “Data monitor” with CONSULT-III.
2. Check the mirror sensor RH signal under the following conditions.
Is the indication normal?
YES >> Inspection End.
NO >> Perform diagnosis procedure. Refer to ADP-95, "
PASSENGER SIDE : DiagnosisProcedure".
PASSENGER SIDE : Diagnosis ProcedureINFOID:0000000005147549
Regarding Wiring Diagram information, refer to ADP-138, "Wiring Diagram".
1. CHECK DOOR MIRROR RH SENSOR SIGNAL
1. Turn ignition switch to ACC.
2. Check voltage between door mirror RH harness connector and ground.
Is the inspection result normal?
YES >> GO TO 5
NO >> GO TO 2
2. CHECK DOOR MIRROR RH SENSOR HARNESS CONTINUITY
Monitor item ConditionValue
MIR/SEN RH U-D Door mirror RHClose to peak
3.4V
Close to valley 0.6V
MIR/SEN RH R-L Close to right edge
3.4V
Close to left edge 0.6V
Te r m i n a l s
ConditionVoltage (V)
(Approx.)
(+)
(–)
Door mirror
RH con-
nector Te r m i n a l
D107 7
Ground Door mirror
RH Close to peak
3.4
Close to valley 0.6
8 Close to right edge 3.4
Close to left edge 0.6
LIIA1485E
Revision: April 20092010 QX56

ADP-96
< COMPONENT DIAGNOSIS >
MIRROR SENSOR
1. Turn ignition switch OFF.
2. Disconnect automatic drive positioner control unit and door mir-
ror RH.
3. Check continuity between automatic drive positioner control unit harness connector and door mirror RH harness connector.
4. Check continuity between automatic drive positioner control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK DOOR MIRROR RH SENSOR POWER SUPPLY CIRCUIT
1. Check continuity between automatic drive positioner control unit harness connector and door mirror RH harness connector.
2. Check continuity between automatic drive positioner control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4. CHECK PEDAL ADJUSTING OPERATION
1. Connect driver seat control unit and door mirror RH.
2. Turn ignition switch ON.
3. Check pedal adjusting operation with memory function.
Is the operation normal?
YES >> Replace door mirror actuator RH. Refer to MIR-19, "Mirror Actuator".
NO >> Replace automatic drive posit ioner control unit. Refer to ADP-175, "
Removal and Installation".
5. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace automatic drive positioner control unit. Refer to ADP-175, "Removal and Installation".
NO >> Repair or replace the malfunctioning part.
Automatic drive posi-
tioner control unit connector Terminal
Door mirror RH
connector Terminal Continuity
M33 5
D107 7
Ye s
21 8
Automatic drive positioner control unit connector Te r m i n a l
GroundContinuity
M33 5
No
21
LIIA1473E
Automatic drive posi-
tioner control unit connector Te r m i n a l
Door mirror RH
connector Terminal Continuity
M34 33
D107 5
Ye s
41 6
Automatic drive positioner control unit connector Te r m i n a l
GroundContinuity
M34 33
No
41
LIIA1486E
Revision: April 20092010 QX56