2008 INFINITI QX56 steering wheel

AUTOMATIC DRIVE POSITIONER SYSTEMADP-25
< FUNCTION DIAGNOSIS >
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ENTRY ASSIST FUNCTION : Component DescriptionINFOID:0000000001735429
CONTROL UNITS
INPUT PARTS
Switches
Sensors
OUTPUT PARTS
Item Function
Driver seat control unit According to the ignition signal and front door switch LH signal from BCM,
• Operates the seat sliding motor for a constant amount.
• Driver seat control unit then requests the operation of the tilt motor to the auto-
matic drive positioner control unit via UART communication.
Automatic drive positioner control unit Operates the tilt motor for a constant amount.
BCM Recognizes the following status and transmits it to the driver seat control unit via
CAN communication.
• Front door LH: OPEN/CLOSE
• Ignition switch position: ACC/ON
Item
Function
Front door switch LH Detect front door LH open/close status.
Item Function
Sliding sensor Detect the front/rear position of seat.
Tilt sensor Detect the up/down position of steering wheel.
Item Function
Sliding motor Slide the seat forward/backward.
Tilt motor Moves the steering wheel upward/downward.
Revision: March 2010 2008 QX56

TILT SWITCHADP-55
< COMPONENT DIAGNOSIS >
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OK or NG
OK >> GO TO 3
NG >> Repair or replace harness.
3. CHECK ADP STEERING SWITCH GROUND CIRCUIT
Check continuity between ADP steer ing switch connector M16 termi-
nal 1 and ground.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Replace or replace harness.
4. CHECK TILT SWITCH
Refer to ADP-55, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 5
NO >> Replace ADP steering switch.
5. CHECK INTERMITTENT INCIDENT
Refer to GI-38, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace automatic driv e positioner control unit.
NO >> Repair or replace the malfunctioning part.
Component InspectionINFOID:0000000001754042
1. CHECK ADP STEERING WHEEL TILT SWITCH
Check continuity between ADP steer ing switch terminals as follows.
OK or NG
OK >> INSPECTION END
NG >> Replace ADP steering switch. 1 - Ground : Continuity should not exist.
17 - Ground : Continuity should not exist.
1 - Ground : Continuity should exist.
LIIA0490E
Terminals
ConditionContinuity
2 1ADP steering switch ON (UP operation) Yes
Other than above
No
3 ADP steering switch ON (DOWN operation) Yes
Other than above
No
LIIA1435E
Revision: March 2010 2008 QX56

ADP SYSTEM SYMPTOMSADP-155
< SYMPTOM DIAGNOSIS >
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SYMPTOM DIAGNOSIS
ADP SYSTEM SYMPTOMS
Symptom TableINFOID:0000000001735561
NOTE:
Always perform the “Basic Inspection” before perfo rming diagnosis in the following table. Refer to ADP-5,
"Work Flow".
SYMPTOM 1
SYMPTOM 2
SYMPTOM 3
Symptom Diagnosis procedureReference
page
Manual functions (for specific part) do
not operate Sliding operation
Check sliding switch. ADP-46
Reclining operationCheck reclining switch. ADP-48
Lifting operation (front) Check lifting switch (front). ADP-50
Lifting operation (rear) Check lifting switch (rear).ADP-52
Pedal operation1. Check pedal adjusting switch.
ADP-562. Check pedal adjusting sensor.ADP-81
Steering wheel tilt operation Check ADP steering switch ADP-54
Door mirror operation1. Changeover switch.
ADP-612. Mirror switchADP-63
All parts of seatCheck power seat switch ground cir-
cuit. ADP-66
Symptom
Diagnosis procedureReference
page
Memory functions (for specific part) do
not operate Sliding operation
Check sliding sensor. ADP-71
Reclining operationCheck reclining sensor. ADP-73
Lifting operation (front) Check lifting sensor (front). ADP-75
Lifting operation (rear) Check lifting sensor (rear).ADP-77
Pedal operationCheck pedal adjusting sensor. ADP-81
Steering wheel tilt operation Check tilt sensor ADP-79
Door mirror operation Check door mirror sensor. Driver side:
ADP-83Passenger side:
ADP-85
Symptom Diagnosis procedureReference
page
Memory functions and manual func-
tions (for specific part) do not operate Sliding operation
Check sliding motor. ADP-87
Reclining operationCheck reclining motor. ADP-89
Lifting operation (front) Check lifting motor (front). ADP-91
Lifting operation (rear) Check lifting motor (rear).ADP-93
Pedal operationCheck pedal adjusting motor. ADP-97
Steering wheel operation Check tilt motor ADP-95
Door mirror operation Check door mirror motor.ADP-99
Revision: March 2010 2008 QX56

ADP-158
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004857495
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000004857496
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
Revision: March 2010 2008 QX56

ADP-160
< ON-VEHICLE MAINTENANCE >
PRE-INSPECTION FOR DIAGNOSTIC
ON-VEHICLE MAINTENANCE
PRE-INSPECTION FOR DIAGNOSTIC
Basic InspectionINFOID:0000000001735563
1. CHECK POWER SUPPLY AND DROUND CIRCUIT
Check the power supply and ground circuit as shown below.
• Driver seat control unit :Refer to ADP-44, "
DRIVER SEAT CONTROL UNIT : DiagnosisProcedure".
• Automatic drive positioner control unit: Refer to ADP-45, "
AUTOMATIC DRIVE POSITIONER CONTROL
UNIT : DiagnosisProcedure".
Is the inspection result normally?
YES >> GO TO 2
NO >> Repair or replace the malfunctioning part.
2. CHECK MANUAL FUNCTION
Check the manual function operations by operati ng the relevant switches as shown below.
• Seat (slide, reclining, lifting front, lifting rear)
• Pedal assembly (forward, backward)
• Steering wheel (upward, downward)
• Door mirror
Do all manual functions operate normally?
YES >> GO TO 3
NO (Seat, pedal, door mirror)>>Go to SYMPTOM 1, refer to ADP-155, "
Symptom Table". And, GO TO 4 if
the result of SYMPTOM 1 is OK.
3. CHECK MEMORY FUNCTION 1
Register the seat positions (refer to Owner’s Manual) and check that all parts of the seat, pedals, steering
wheel and door mirrors move to their memory positions correctly.
Are the operations normal?
YES >> Check each malfunction according to the instruction of the SYMPTOM 4, refer to ADP-155,
"Symptom Table".
No (memory indicator operates normally)>> Go to SYMPTOM 2, refer to ADP-155, "
Symptom Table".
No (memory indicator does not operate normally either)>> GO TO 5
4. CHECK MEMORY FUNCTION 2
Register the seat positions (refer to Owner’s Manual) and check that all parts of the seat, pedals, steering
wheel and door mirrors move to their memory positions correctly.
Are the operations normal?
YES >> Check intermittent incident. Refer to GI-38, "Intermittent Incident".
NO >> GO TO 7
5. CHECK SEAT MEMORY SWITCH/MEMORY INDICATOR
Check the seat memory switch/memory switch indicator of the SYMPTOM 5, refer to ADP-155, "
Symptom
Table".
Is the inspection result normal?
YES >> GO TO 6
NO >> Repair or replace the malfunctioning part.
6. CHECK OPERATION CONDITION
Check the memory operation conditions (refer to ADP-10, "
AUTOMATIC DRIVE POSITIONER SYSTEM :
System Description").
Are all operation conditions fulfilled?
YES >> Go to SYMPTOM 6, refer to ADP-155, "Symptom Table".
NO >> Fulfill the operation conditions. Refer to ADP-10, "
AUTOMATIC DRIVE POSITIONER SYSTEM :
System Description".
Revision: March 2010 2008 QX56

AP-1
BODY INTERIOR
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CONTENTS
ADJUSTABLE PEDAL
SERVICE INFORMATION .. ..........................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... .....
2
ADJUSTABLE PEDAL SYSTEM .......................4
Adjustable Pedal .......................................................4
Revision: March 2010 2008 QX56

AP-2
< SERVICE INFORMATION >
PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004857556
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000004857557
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
Revision: March 2010 2008 QX56

AV
AV-3
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Description ..........................................................
....
76
Diagnosis Procedure ...............................................76
RGB AREA (YS) SIGNAL CIRCUIT ..................77
Description .......................................................... ....77
Diagnosis Procedure ...............................................77
HORIZONTAL SYNCHRONIZING (HP) SIG-
NAL CIRCUIT ................................................. ....
78
Description .......................................................... ....78
Diagnosis Procedure ...............................................78
VERTICAL SYNCHRONIZING (VP) SIGNAL
CIRCUIT ......................................................... ....
79
Description .......................................................... ....79
Diagnosis Procedure ...............................................79
FRONT DOOR SPEAKER .................................80
Description .......................................................... ....80
Diagnosis Procedure ...............................................80
FRONT TWEETER .............................................83
Description .......................................................... ....83
Diagnosis Procedure ...............................................83
CENTER SPEAKER ...........................................86
Description .......................................................... ....86
Diagnosis Procedure ...............................................86
REAR DOOR SPEAKER ....................................88
Description .......................................................... ....88
Diagnosis Procedure ...............................................88
REAR DOOR TWEETER ...................................91
Description .......................................................... ....91
Diagnosis Procedure ...............................................91
BACK DOOR SPEAKER ...................................94
Description .......................................................... ....94
Diagnosis Procedure ...............................................94
SUBWOOFER ....................................................97
Description .......................................................... ....97
Diagnosis Procedure ...............................................97
AMP ON SIGNAL CIRCUIT .............................100
Description .......................................................... ..100
Diagnosis Procedure .............................................100
STEERING SWITCH ........................................101
Description .......................................................... ..101
Diagnosis Procedure .............................................101
MICROPHONE SIGNAL CIRCUIT ...................103
Description .......................................................... ..103
Diagnosis Procedure .............................................103
ECU DIAGNOSIS .......................................105
AV CONTROL UNIT ....................................... ..105
Reference Value ................................................. ..105
Wiring Diagram .....................................................111
DTC Index ........................................................... ..139
DISPLAY UNIT ................................................141
Reference Value ....................................................141
BOSE SPEAKER AMP ...................................144
Reference Value ....................................................144
REAR VIEW CAMERA CONTROL UNIT .......147
Reference Value ....................................................147
DVD PLAYER ..................................................149
Reference Value ....................................................149
SYMPTOM DIAGNOSIS ............................151
MULTI AV SYSTEM ........................................151
Symptom Table ................................................... ..151
NORMAL OPERATING CONDITION .............153
Description .............................................................153
PRECAUTION ............................................161
PRECAUTIONS ...............................................161
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ..
161
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .................................
161
PREPARATION .........................................163
PREPARATION ...............................................163
Commercial Service Tools ................................... ..163
ON-VEHICLE REPAIR ...............................164
AV CONTROL UNIT ........................................164
Removal and Installation ..................................... ..164
DISPLAY UNIT ................................................166
Removal and Installation .......................................166
FRONT TWEETER ..........................................167
Removal and Installation .......................................167
CENTER SPEAKER ........................................168
Removal and Installation .......................................168
FRONT DOOR SPEAKER ..............................169
Removal and Installation .......................................169
REAR DOOR SPEAKER ................................170
Removal and Installation .......................................170
BACK DOOR SPEAKER ................................171
Removal and Installation .......................................171
SUBWOOFER .................................................172
Removal and Installation .......................................172
DVD PLAYER ..................................................173
Removal and Installation .......................................173
Revision: March 2010 2008 QX56