2008 INFINITI QX56 Factory Service Manual

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INFINITI QX56 2008 Factory Service Manual SCS-38
< SYMPTOM DIAGNOSIS >
SUSPENSION CONTROL SYSTEM DOES NOT LOWER
SUSPENSION CONTROL SYSTEM DOES NOT LOWER
DescriptionINFOID:0000000001732007
The suspension control system does not lower the vehic

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INFINITI QX56 2008 Factory Service Manual PRECAUTIONSSCS-39
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:00000000049

PRECAUTIONSSCS-39
< PRECAUTION >
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PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004900823
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty 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 inoper ative, 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 unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied 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 Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric 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 minutes before performing any service.
Precaution for Rear SuspensionINFOID:0000000001732010
• When installing the rubber bushings, the final tightening must be done under unladen condition and with thetires on level ground. Oil will shorten the life of the rubber bushings, so wipe off any spilled oil immediately.
• Unladen condition means the fuel tank, engine coolant and lubricants are at the full specification. The spare tire, jack, hand tools, and mats are in their designated positions.
• After installing suspension components, check the wheel alignment.
• Caulking nuts are not reusable. Always use new caulking nuts for installation. New caulking nuts are pre-
oiled, do not apply any additional lubrication.
Revision: March 2010 2008 QX56

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INFINITI QX56 2008 Factory Service Manual SE-1
BODY INTERIOR
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SECTION SE
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CONTENTS
SEAT
BASIC INSPECTION ....... .............................3
DIAGNOSIS AND REPAIR WORKFLOW ..... .....3
Work Flow ............

SE-1
BODY INTERIOR
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SECTION SE
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CONTENTS
SEAT
BASIC INSPECTION ....... .............................3
DIAGNOSIS AND REPAIR WORKFLOW ..... .....3
Work Flow ........................................................... ......3
INSPECTION AND ADJUSTMENT .....................5
Preliminary Check ............................................... ......5
FUNCTION DIAGNOSIS ...............................6
THIRD ROW POWER FOLDING SEAT ......... .....6
System Description ............................................. ......6
Component Parts Location ........................................7
Component Description .............................................7
COMPONENT DIAGNOSIS ..........................8
POWER SEAT .....................................................8
Wiring Diagram — Passenger Side — ................ ......8
HEATED SEAT ...................................................12
Description ..............................................................12
Wiring Diagram .......................................................13
THIRD SEAT ......................................................18
Power Supply and Ground Circuit Check for Third
Row Power Folding Seat Control Unit ................. ....
18
Third Row Power Folding Seat Switch ....................19
Third Row Power Folding Seat Motor .....................19
ECU DIAGNOSIS .........................................21
THIRD ROW POWER FOLDING SEAT CON-
TROL UNIT .........................................................
21
Reference Value ................................................. ....21
Wiring Diagram .......................................................23
DTC Index ...............................................................28
Fail Safe ..................................................................29
SYMPTOM DIAGNOSIS ..............................30
THIRD ROW POWER FOLDING SEAT ......... ....30
Symptom Table ................................................... ....30
NONE OF THE THIRD ROW POWER FOLD-
ING SEATS WILL OPERATE WITH ANY
SWITCH. ............................................................
31
None of the Third Row Power Folding Seats Will
Operate With Any Third Row Power Folding Seat
Switch .................................................................. ....
31
ONLY ONE THIRD ROW POWER FOLDING
SEAT WILL OPERATE. ....................................
32
Only One Third Row Power Folding Seat Will Op-
erate .................................................................... ....
32
THIRD ROW POWER FOLDING SEAT WILL
OPERATE IN ONLY ONE DIRECTION. ...........
34
Third Row Power Folding Seat Will Operate in
Only One Direction .............................................. ....
34
THIRD ROW POWER FOLDING SEAT WILL
STOP SHORT OF IT’S FULLY UP OR DOWN
POSITION. .........................................................
35
Third Row Power Folding Seat Stops Short of its
Fully Up or Down Position .......................................
35
THIRD ROW POWER FOLDING SEAT
MAKES EXCESSIVE NOISE WHILE MOV-
ING. ...................................................................
36
Third Row Power Folding Seat Makes Excessive
Noise While Moving ............................................. ....
36
SQUEAK AND RATTLE TROUBLE DIAG-
NOSES ..............................................................
37
Work Flow ................................................................37
Generic Squeak and Rattle Troubleshooting ...........39
Diagnostic Worksheet ..............................................41
PRECAUTION ..............................................43
PRECAUTIONS .................................................43
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ....
43
Revision: March 2010 2008 QX56

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INFINITI QX56 2008 Factory Service Manual SE-2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ..................................
43
Precaution for Work ................................................44
PREPARAT

SE-2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ..................................
43
Precaution for Work ................................................44
PREPARATION ...........................................45
PREPARATION .............................................. ...45
Special Service Tool ............................................ ...45
Commercial Service Tool .......................................45
ON-VEHICLE REPAIR ................................46
FRONT SEAT ................................................. ...46
Exploded View ..................................................... ...46
Removal and Installation ........................................49
SECOND SEAT .................................................50
Exploded View ..................................................... ...50
Removal and Installation ........................................54
THIRD SEAT ......................................................55
W/O Power Folding ............................................. ...55
Exploded View ........................................................55
LH Side Seat ..........................................................58
RH Side Seat ....................................................... ...59
Power Folding .........................................................60
Exploded View ........................................................60
LH Side Seat ...........................................................62
Power seat cross beam ..........................................63
RH Side Seat ..........................................................67
DISASSEMBLY AND ASSEMBLY ............68
FRONT SEAT ................................................. ...68
Exploded View ..................................................... ...68
Disassembly and Assembly ....................................71
SECOND SEAT .................................................74
Disassembly and Assembly ................................. ...74
THIRD SEAT ......................................................79
W/O Power Folding .............................................. ...79
Exploded View ........................................................79
LH Side Seat ...........................................................82
Power Folding .........................................................83
Exploded View ........................................................83
LH Side Seat ...........................................................86
Revision: March 2010 2008 QX56

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INFINITI QX56 2008 Factory Service Manual DIAGNOSIS AND REPAIR WORKFLOWSE-3
< BASIC INSPECTION >
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DIAGNOSIS AND REPAIR WORKFLOW
Work FlowINFOID:0000000001735709
WORK FLOW
DETAILED FLOW
1.CUSTOME

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INFINITI QX56 2008 Factory Service Manual SE-4
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
>> GO TO 4
4.SYMPTOM
Check for symptoms. Refer to SE-30, "
Symptom Table".
>> GO TO 5
5.MALFUNCTIONING PARTS
Repair or replace the applicable

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INFINITI QX56 2008 Factory Service Manual INSPECTION AND ADJUSTMENTSE-5
< BASIC INSPECTION >
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INSPECTION AND ADJUSTMENT
Preliminary CheckINFOID:0000000001735710
1.FOREIGN OBJECTS
Check the following:
• objects

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INFINITI QX56 2008 Factory Service Manual SE-6
< FUNCTION DIAGNOSIS >
THIRD ROW POWER FOLDING SEAT
FUNCTION DIAGNOSIS
THIRD ROW POWER FOLDING SEAT
System DescriptionINFOID:0000000001735711
The third row power folding seat system is capable of

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