2011 INFINITI QX56 service

GW-1
BODY EXTERIOR, DOORS, ROOF & VEHICLE SECURITY
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CONTENTS
GLASS & WINDOW SYSTEM
PRECAUTION ................ ...............................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
Precaution for Procedure without Cowl Top Cover ......3
Handling for Adhesive and Primer ............................3
PREPARATION ............................................4
PREPARATION .............................................. .....4
Special Service Tools ........................................ ......4
Commercial Service Tools .......................................4
SYMPTOM DIAGNOSIS ...............................5
SQUEAK AND RATTLE TROUBLE DIAG-
NOSES ........................ ........................................
5
Work Flow ........................................................... ......5
Inspection Procedure ................................................7
Diagnostic Worksheet ...............................................9
REMOVAL AND INSTALLATION ...............11
WINDSHIELD GLASS .................................... ....11
Exploded View .................................................... ....11
Removal and Installation .........................................12
Inspection ................................................................13
SIDE WINDOW GLASS ....................................14
Exploded View ..................................................... ....14
Removal and Installation .........................................15
Inspection ................................................................15
BACK DOOR WINDOW GLASS ......................16
Exploded View ..................................................... ....16
Removal and Installation .........................................16
Inspection ................................................................17
FRONT DOOR GLASS .....................................19
Exploded View .........................................................19
Removal and Installation .........................................19
Inspection and Adjustment ......................................20
FRONT REGULATOR .......................................21
Exploded View .........................................................21
Removal and Installation .........................................21
Disassembly and Assembly .....................................21
Inspection and Adjustment ......................................22
REAR DOOR GLASS .......................................23
Exploded View .........................................................23
Removal and Installation .........................................23
Inspection and Adjustment ......................................25
REAR REGULATOR .........................................26
Exploded View .........................................................26
Removal and Installation .........................................26
Disassembly and Assembly .....................................27
Inspection and Adjustment ......................................27
Revision: 2010 May2011 QX56

GW-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006257243
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 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 “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISS AN/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 “SRS AIR BAG”.
 Do not use electrical test equipmen t 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 Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the ignition ON or engine running, DO NOT use air or electric 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:0000000006257244
NOTE:
 Before removing and installing any control units, first tu rn the push-button ignition switch to the LOCK posi-
tion, then disconnect bot h battery cables.
 After finishing work, confirm that all control unit connectors are connected properly, then re-connect both
battery cables.
 Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If a DTC is detected, perform trouble diagnos is according to self-diagnosis results.
For vehicle with steering lock unit, if the battery is disconnected or discharged, the steering wheel will lock and
cannot be turned.
If turning the steering wheel is required with the bat tery disconnected or discharged, follow the operation pro-
cedure below before starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Turn the push-button ignition switch to ACC position. (At this time, the steering lock will be released.)
3. Disconnect both battery cables. The steering lock wi ll remain released with both battery cables discon-
nected and the steering wheel can be turned.
4. Perform the necessary repair operation.
Revision: 2010 May2011 QX56

GW-4
< PREPARATION >
PREPARATION
PREPARATION
PREPARATION
Special Service ToolsINFOID:0000000006108041
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service ToolsINFOID:0000000006108042
Tool number
(Kent-Moore No.)
Tool name Description
(J-39570)
Chassis ear Locates the noise
(J-43980)
NISSAN Squeak and Rat-
tle Kit Repairs the cause of noise
SIIA0993E
SIIA0994E
Tool name Description
Engine ear Locates the noise
Suction lifter Holds the door glass
Remover tools Removes the clips, pawls and metal clips
SIIA0995E
PIIB1805J
JMKIA3050ZZ
Revision: 2010 May2011 QX56

SQUEAK AND RATTLE TROUBLE DIAGNOSESGW-5
< SYMPTOM DIAGNOSIS >
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SYMPTOM DIAGNOSIS
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Work FlowINFOID:0000000006108035
CUSTOMER INTERVIEW
Interview the customer if possible, to determine the conditions that exist when the noise occurs. Use the Diag-
nostic Worksheet during the interview to document t he facts and conditions when the noise occurs and any of
customer's comments; refer to GW-9, "
Diagnostic Worksheet". This information is necessary to duplicate the
conditions that exist when the noise occurs.
 The customer may not be able to provide a detailed description or the location of the noise. Attempt to obtain
all the facts and conditions that exist when the noise occurs (or does not occur).
 If there is more than one noise in the vehicle, perform a diagnosis and repair the noise that the customer is
concerned about. This can be accomplished by performing a cruise test on the vehicle with the customer.
 After identifying the type of noise, isolate the noise in terms of its characteristics. The noise characteristics
are provided so the customer, service adviser and technician are all speaking the same language when
defining the noise.
 Squeak – (Like tennis shoes on a clean floor) Squeak characteristics include the light contact/fast movement/brought on by road conditions/hard surfaces
= higher pitch noise/softer surfaces = lower pitch noises/edge to surface = chirping
 Creak – (Like walking on an old wooden floor) Creak characteristics include firm contact/slow mo vement/twisting with a rotational movement/pitch depen-
dent on materials/often brought on by activity.
 Rattle – (Like shaking a baby rattle) Rattle characteristics include the fast repeated contac t/vibration or similar movement/loose parts/missing
clip or fastener/incorrect clearance.
 Knock – (Like a knock on a door) Knock characteristics include hollow sounding/someti mes repeating/often brought on by driver action.
 Tick – (Like a clock second hand) Tick characteristics include gentle contacting of li ght materials/loose components/can be caused by driver
action or road conditions.
 Thump – (Heavy, muffled knock noise)
Thump characteristics include softer k nock/dead sound often brought on by activity.
 Buzz – (Like a bumblebee) Buzz characteristics include high frequency rattle/firm contact.
 Often the degree of acceptable noise level will vary depending up on the person. A noise that you may judge
as acceptable may be very irritating to the customer.
 Weather conditions, especially humidity and temperat ure, may have a great effect on noise level.
DUPLICATE THE NOISE AND TEST DRIVE
SBT842
Revision: 2010 May2011 QX56

GW-6
< SYMPTOM DIAGNOSIS >
SQUEAK AND RATTLE TROUBLE DIAGNOSES
If possible, drive the vehicle with the customer until the noise is duplicated. Note any additional information on
the Diagnostic Worksheet regarding the conditions or lo cation of the noise. This information can be used to
duplicate the same conditions when you confirm the repair.
If the noise can be duplicated easily during the test drive, to help identify the source of the noise, try to dupli-
cate the noise with the vehicle stopped by doing one or all of the following:
1) Close a door.
2) Tap or push/pull around the area where the noise appears to be coming from.
3) Rev the engine.
4) Use a floor jack to recreate vehicle “twist”.
5) At idle, apply engine load (electrical load, half-cl utch on M/T models, drive position on A/T models).
6) Raise the vehicle on a hoist and hit a tire with a rubber hammer.
 Drive the vehicle and attempt to duplicate the conditions the customer states exist when the noise occurs.
 If it is difficult to duplicate the noise, drive the v ehicle slowly on an undulating or rough road to stress the
vehicle body.
CHECK RELATED SERVICE BULLETINS
After verifying the customer concern or symptom, chec k ASIST for Technical Service Bulletins (TSBs) related
to that concern or symptom.
If a TSB relates to the symptom, follo w the procedure to repair the noise.
LOCATE THE NOISE AND IDENTIFY THE ROOT CAUSE
1. Narrow down the noise to a general area. To help pi npoint the source of the noise, use a listening tool
(Chassis Ear: J-39570, Engine Ear and mechanics stethoscope).
2. Narrow down the noise to a more specific area and identify the cause of the noise by:
 Removing the components in the area that you suspect the noise is coming from.
Do not use too much force when removing clips and fasteners, otherwise clips and fastener can be broken
or lost during the repair, resulting in the creation of new noise.
 Tapping or pushing/pulling the component that you suspect is causing the noise.
Do not tap or push/pull the component with excessive force, otherwise the noise will be eliminated only tem-
porarily.
 Feeling for a vibration with your hand by touching the component(s) that you suspect is (are) causing the
noise.
 Placing a piece of paper between components that you suspect are causing the noise.
 Looking for loose components and contact marks. Refer to GW-7, "
Inspection Procedure".
REPAIR THE CAUSE
 If the cause is a loose component, tighten the component securely.
 If the cause is insufficient clearance between components:
- Separate components by repositioning or loos ening and retightening the component, if possible.
- Insulate components with a suitable insulator such as urethane pads, foam blocks, felt cloth tape or ure-
thane tape. A Nissan Squeak and Rattle Kit (J-43980) is available through your authorized Nissan Parts
Department.
CAUTION:
Do not use excessive force as many components are constructed of plastic and may be damaged.
NOTE:
Always check with the Parts Departm ent for the latest parts information.
The following materials are contained in the Nissan Squeak and Rattle Kit (J-43980). Each item can be
ordered separately as needed.
URETHANE PADS [1.5 mm (0.059 in) thick]
Insulates connectors, harness, etc.
76268-9E005: 100 ×135 mm (3.94 ×5.31 in)/76884-71L01: 60 ×85 mm (2.36 ×3.35 in)/76884-
71L02:15 ×25 mm (0.59 ×0.98 in)
INSULATOR (Foam blocks)
Insulates components from contact. Can be used to fill space behind a panel.
73982-9E000: 45 mm (1.77 in) thick, 50 ×50 mm (1.97 ×1.97 in)/73982-
50Y00: 10 mm (0.39 in) thick, 50 ×50 mm (1.97 ×1.97 in)
INSULATOR (Light foam block)
80845-71L00: 30 mm (1.18 in) thick, 30 ×50 mm (1.18 ×1.97in)
FELT CLOTHTAPE
Used to insulate where movement does not occu r. Ideal for instrument panel applications.
Revision: 2010 May2011 QX56

REAR REGULATORGW-27
< REMOVAL AND INSTALLATION >
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8. Operate the power window switch to raise or lower the door win- dow until the glass mounting bolts can be seen.
9. Remove the rear door glass mounting bolts.
10. Raise rear door glass up and hold it with a suction lifter (A).
11. Disconnect rear door power window motor harness connector.
12. Remove rear door regulator mounting nuts.
13. Remove rear door power window motors mounting bolts.
14. Remove rear door regulator from rear door panel.
INSTALLATION
Install in the reverse order of removal.
Disassembly and AssemblyINFOID:0000000006220834
DISASSEMBLY
Remove rear power window motor from rear door regulator.
ASSEMBLY
Assemble in the reverse order of disassembly.
Inspection and AdjustmentINFOID:0000000006220835
SYSTEM INITIALIZATION
Initialize the system if any of t he following work has been done. Refer to ADP-51, "ADDITIONAL SERVICE
WHEN REMOVING BATTERY NEGATIVE TERMINAL : Description".
Initialization
Follow the steps below after installing each component to the vehicle. Refer to ADP-51, "ADDITIONAL SER-
VICE WHEN REMOVING BATTERY NEGATIVE TERMINAL : Special Repair Requirement".
FITTING INSPECTION
 Check that the glass is fit securely into the sash groove.
 Lower the glass slightly [approximately 10 to 20 mm (0.394 to 0.787 in)], and check that the clearance to the
sash is parallel. Loosen the regulator mounting bolts, guide rail mounting bolts, and glass and guide rail
mounting bolts to correct the glass position if the clearance between the glass and sash is not parallel.
: Bolt
JMKIA1789ZZ
PIIB3511J
Revision: 2010 May2011 QX56

HA-1
VENTILATION, HEATER & AIR CONDITIONER
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CONTENTS
HEATER & AIR CONDITIONING SYSTEM
PRECAUTION ................ ...............................3
PRECAUTIONS .............................................. .....3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
3
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect .....................................
3
Precaution for Procedure without Cowl Top Cover ......4
Precautions For Refrigerant System Service ............4
Service Equipment ....................................................6
PREPARATION ............................................9
PREPARATION .............................................. .....9
Special Service Tool ........................................... ......9
Commercial Service Tool ........................................12
Sealant or/and Lubricant .........................................12
SYSTEM DESCRIPTION .............................13
COMPONENT PARTS ................................... ....13
Component Parts Location .................................. ....13
Component Description ...........................................13
SYSTEM .............................................................14
System Diagram .................................................. ....14
System Description .................................................14
BASIC INSPECTION ...................................16
DIAGNOSIS AND REPAIR WORKFLOW ..... ....16
Work Flow ........................................................... ....16
REFRIGERANT ..................................................18
Description .......................................................... ....18
Leak Test ................................................................18
Recycle Refrigerant .................................................20
Charge Refrigerant ..................................................20
LUBRICANT ................................................... ....22
Description .......................................................... ....22
Inspection ............................................................ ....22
Perform Lubricant Return Operation .......................22
Lubricant Adjusting Procedure for Components
Replacement Except Compressor ...........................
22
Lubricant Adjusting Procedure for Compressor
Replacement ...........................................................
23
PERFORMANCE TEST ....................................25
Inspection ................................................................25
SYMPTOM DIAGNOSIS ..............................27
REFRIGERATION SYSTEM SYMPTOMS ........27
Trouble Diagnosis For Unusual Pressure ............ ....27
Symptom Table .......................................................27
NOISE ................................................................29
Symptom Table .......................................................29
REMOVAL AND INSTALLATION ...............30
COMPRESSOR .................................................30
Exploded View ..................................................... ....30
COMPRESSOR ..........................................................30
COMPRESSOR : Removal and Installation ............30
MAGNET CLUTCH ................................................ ....31
MAGNET CLUTCH : Removal and Installation of
Compressor Clutch ..................................................
31
Inspection ................................................................32
COOLER PIPE AND HOSE ..............................33
Exploded View .........................................................33
HIGH-PRESSURE FLEXIBLE HOSE ........................34
HIGH-PRESSURE FLEXIBLE HOSE : Removal
and Installation .................................................... ....
34
LOW-PRESSURE FLEXIBLE HOSE ..................... ....35
LOW-PRESSURE FLEXIBLE HOSE : Removal
and Installation ........................................................
35
HIGH-PRESSURE PIPE ............................................35
Revision: 2010 May2011 QX56

HA-2
HIGH-PRESSURE PIPE : Removal and Installa-
tion ....................................................................... ...
35
LOW-PRESSURE PIPE ......................................... ...36
LOW-PRESSURE PIPE : Removal and Installa-
tion ..........................................................................
36
REAR COOLER PIPE ............................................ ...37
REAR COOLER PIPE : Removal and Installation ...37
CONDENSER ................................................. ...38
Exploded View ..................................................... ...38
CONDENSER ......................................................... ...38
CONDENSER : Removal and Installation ..............38
LIQUID TANK ......................................................... ...39
LIQUID TANK : Removal and Installation ...............39
REFRIGERANT PRESSURE SENSOR ....................39
REFRIGERANT PRESSURE SENSOR : Remov-
al and Installation ................................................. ...
39
A/C UNIT ASSEMBLY .................................... ...41
Exploded View ..................................................... ...41
HEATER & COOLING UNIT ASSEMBLY ................42
HEATER & COOLING UNIT ASSEMBLY : Re-
moval and Installation .......................................... ...
42
EVAPORATOR ...................................................... ...43
EVAPORATOR : Removal and Installation ............43
HEATER CORE ...................................................... ...44
HEATER CORE : Removal and Installation ...........44
EXPANSION VALVE .............................................. ...44
EXPANSION VALVE : Removal and Installation ....44
REAR A/C UNIT ................................................46
Exploded View ..................................................... ...46
REAR A/C UNIT ASSEMBLY ...................................47
REAR A/C UNIT ASSEMBLY : Removal and In-
stallation ............................................................... ...
47
EVAPORATOR ....................................................... ...48
EVAPORATOR : Removal and Installation .............48
EVAPORATOR PIPE ASSEMBLY ........................ ...48
EVAPORATOR PIPE ASSEMBLY : Removal and
Installation ...............................................................
48
HEATER CORE ...................................................... ...48
HEATER CORE : Removal and Installation ............48
EXPANSION VALVE .............................................. ...49
EXPANSION VALVE : Removal and Installation ....49
SERVICE DATA AND SPECIFICATIONS
(SDS) .......... ................................................
50
SERVICE DATA AND SPECIFICATIONS
(SDS) .............................................................. ...
50
Compressor ......................................................... ...50
Lubricant .................................................................50
Refrigerant ..............................................................50
Engine Idling Speed ................................................50
Belt Tension ............................................................50
Revision: 2010 May2011 QX56