2011 INFINITI QX56 belt

EM-100
< UNIT REMOVAL AND INSTALLATION >
ENGINE ASSEMBLY
3. Install engine slinger on both front right and front left sides of theengine.
4. Hoist the slinger to obtain room for engine assembly. CAUTION:
Use an engine lifter to prevent the engine slinger from fall-
ing and damaging the rocker cover.
REMOVAL
Outline
At first, remove the transmission and transfer assemb ly, steering gear and front final drive facing downward.
Then remove the engine.
Preparation
1. Remove engine cover. Refer to EM-25, "Exploded View".
2. Release fuel pressure. Refer to EC-153, "
Work Procedure".
3. Remove battery and tray. Refer to PG-164, "
Exploded View".
4. Remove the following components and related parts:  Hood assembly. Refer to DLK-215, "
Exploded View".
 Front under cover. Refer to EXT-25, "
Exploded View".
 Front road wheel and tires. Refer to WT-64, "
Exploded View".
5. Drain engine oil. Refer to LU-8, "
Draining".
6. Drain engine coolant. Refer to CO-8, "
Draining".
CAUTION:
 Perform this step when engine is cold.
 Never spill engine coolant on drive belts.
7. Drain power steering fluid. Refer to ST-54, "
Exploded View".
Engine Room Front
1. Remove drive belt. Refer to EM-20, "Exploded View".
2. Remove fan shroud. Refer to CO-13, "
Exploded View".
3. Remove cooling fan and fan coupling. Refer to CO-16, "
Exploded View".
4. Remove radiator hoses (upper and lower).
5. Remove radiator.
Vehicle Underbody
1. Remove exhaust front tube. Refer to EX-5, "Exploded View".
2. Remove protector A and B. Refer to SCS-32, "
FRONT TUBE ASSEMBLY : Exploded View".
3. Remove front suspension rear cross member. Refer to TM-205, "
2WD : Exploded View" (2WD models) or
TM-208, "
4WD : Exploded View" (4WD models).
4. Remove oil cooler. Refer to LU-11, "
Exploded View".
A : Engine front slinger (bank 2)
B : Engine front slinger (bank 1)
Slinger bolts:
: 45.0 N·m (4.6 kg-m, 33 ft-lb)
JPBIA3969ZZ
JPBIA2507ZZ
Revision: 2010 May2011 QX56

EM-132
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationINFOID:0000000006289589
GENERAL SPECIFICATIONS
Drive BeltsINFOID:0000000006289590
DRIVE BELT
Spark PlugINFOID:0000000006289591
SPARK PLUG
Unit: mm (in)
Cylinder arrangementV-8
Displacement cm
3 (cu in) 5,552 (338.80)
Bore and stroke mm (in) 98.0 x 92.0 (3.86 x 3.62)
Valve arrangement DOHC
Firing order 1-8-7-3-6-5-4-2
Number of piston rings Compression 2
Oil 1
Number of main bearings 5
Compression ratio 10.8
Compression pressure
kPa (kg/cm
2, psi)/200 rpm Standard 1,667 (17, 242)
Minimum 1,226 (12.5, 178)
Differential limit between cylinders 98 (1.0, 14)
Cylinder number Unit: degree
Valve timing Intake valve open (BTDC) (
−61) - (+ 58)
Intake valve close (ABDC) ( −76) - (+ 69)
Exhaust valve open (BBDC) 56 Exhaust valve close (ATDC) 8
SEM957C
Tension of drive belts Belt tension is not necessary, as it is automatically adjusted by drive belt auto-tensioner.
Make NGK
Standard type DILKAR7B11
Revision: 2010 May2011 QX56

EXL-1
DRIVER CONTROLS
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SECTION EXL
A
B
EXL
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CONTENTS
EXTERIOR LIGHTING SYSTEM
XENON TYPE
PRECAUTION ................ ...............................
5
PRECAUTIONS .............................................. .....5
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
5
SYSTEM DESCRIPTION ..............................6
COMPONENT PARTS ................................... .....6
EXTERIOR LIGHTING SYSTEM .................................6
EXTERIOR LIGHTING SYSTEM : Component
Parts Location ..................................................... ......
6
EXTERIOR LIGHTING SYSTEM :
Component Description ............................................
7
FRONT COMBINATION LAMP ............................. ......8
FRONT COMBINATION LAMP : Xenon Head-
lamp ..........................................................................
8
FRONT COMBINATION LAMP : HID control unit ......9
FRONT COMBINATION LAMP : High Beam Sole-
noid ...........................................................................
9
FRONT COMBINATION LAMP : Aiming Motor ........9
FRONT COMBINATION LAMP : Swivel Actuator ......9
SYSTEM .............................................................10
HEADLAMP SYSTEM ...............................................10
HEADLAMP SYSTEM : Syst em Diagram ...............10
HEADLAMP SYSTEM : System Description ....... ....10
HEADLAMP SYSTEM : Fail-safe ............................10
AUTO LIGHT SYSTEM ..... ........................................11
AUTO LIGHT SYSTEM : System Diagram ......... ....11
AUTO LIGHT SYSTEM : System Description (For
CANADA) ................................................................
11
AUTO LIGHT SYSTEM : System Description (Ex-
cept for CANADA) ...................................................
12
DAYTIME RUNNING LIGHT SYSTEM ......................14
DAYTIME RUNNING LIGH T SYSTEM : System
Diagram ............................................................... ....
14
DAYTIME RUNNING LIGHT SYSTEM : System
Description ........................................................... ....
14
ACTIVE ADAPTIVE FRONT-LIGHTING SYSTEM ....14
ACTIVE ADAPTIVE FRONT-LIGHTING SYSTEM
: System Diagram ................................................ ....
15
ACTIVE ADAPTIVE FRONT-LIGHTING SYSTEM
: System Description ................................................
15
ACTIVE ADAPTIVE FRONT-LIGHTING SYSTEM
: Fail-Safe ................................................................
17
HEADLAMP AIMING CONTROL (MANUAL) ...........17
HEADLAMP AIMING CO NTROL (MANUAL) :
System Description .............................................. ....
18
TURN SIGNAL AND HAZARD WARNING LAMP
SYSTEM .....................................................................
18
TURN SIGNAL AND HAZARD WARNING LAMP
SYSTEM : System Diagram ................................ ....
18
TURN SIGNAL AND HAZARD WARNING LAMP
SYSTEM : System Description ................................
18
PARKING, LICENSE PLATE, SIDE MARKER AND
TAIL LAMP SYSTEM ............................................. ....
18
PARKING, LICENSE PLATE, SIDE MARKER
AND TAIL LAMP SYSTEM : System Diagram ........
18
PARKING, LICENSE PLATE, SIDE MARKER
AND TAIL LAMP SYSTEM : System Description ....
19
PARKING, LICENSE PLATE, SIDE MARKER
AND TAIL LAMP SYSTEM : Fail-safe .....................
19
FRONT FOG LAMP SYSTEM ............................... ....19
FRONT FOG LAMP SYSTEM : System Diagram ....20
FRONT FOG LAMP SYSTEM : System Descrip-
tion ....................................................................... ....
20
FRONT FOG LAMP SYSTEM : Fail-Safe ...............20
EXTERIOR LAMP BATTERY SAVER SYSTEM ... ....20
EXTERIOR LAMP BATTERY SAVER SYSTEM :
System Diagram ......................................................
20
Revision: 2010 May2011 QX56

PRECAUTIONSEXL-5
< PRECAUTION > [XENON TYPE]
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EXL
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006450052
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 whether 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 inoper ative, which could increase the risk of personal injury or death in
the event of a collision that would result in air ba g 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 “SRS AIR BAG”.
 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 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 minutes before performing any service.
Revision: 2010 May2011 QX56

EXT-1
BODY EXTERIOR, DOORS, ROOF & VEHICLE SECURITY
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SECTION EXT
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CONTENTS
EXTERIOR
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
Precaution for Work ..................................................4
PREPARATION ............................................5
PREPARATION .............................................. .....5
Commercial Service Tools ................................. ......5
SYMPTOM DIAGNOSIS ...............................6
SQUEAK AND RATTLE TROUBLE DIAG-
NOSES ........................ ........................................
6
Work Flow ........................................................... ......6
Inspection Procedure ................................................8
Diagnostic Worksheet .............................................10
REMOVAL AND INSTALLATION ...............12
FRONT BUMPER ........................................... ....12
Exploded View .................................................... ....12
Removal and Installation .........................................13
REAR BUMPER .................................................16
Exploded View .................................................... ....16
Removal and Installation .........................................17
FRONT GRILLE .................................................19
Exploded View .................................................... ....19
Removal and Installation .........................................19
COWL TOP .........................................................21
Exploded View .................................................... ....21
Removal and Installation .........................................21
FENDER PROTECTOR ......................................23
FENDER PROTECTOR ......................................... ....23
FENDER PROTECTOR : Exploded View ...............23
FENDER PROTECTOR : Removal and Installa-
tion ...........................................................................
23
REAR WHEEL HOUSE PROTECTOR .................. ....23
REAR WHEEL HOUSE PROTECTOR : Exploded
View .........................................................................
24
REAR WHEEL HOUSE PROTECTOR : Removal
and Installation ........................................................
24
FLOOR SIDE FAIRING .....................................25
Exploded View .........................................................25
Removal and Installation .........................................25
OVER FENDER .................................................26
Exploded View .........................................................26
Removal and Installation .........................................26
ROOF RAIL .......................................................29
Exploded View .........................................................29
Removal and Installation .........................................29
ROOF SIDE MOLDING .....................................31
Exploded View .........................................................31
Removal and Installation .........................................31
DOOR OUTSIDE MOLDING .............................32
Exploded View .........................................................32
Removal and Installation .........................................32
DOOR PARTING SEAL ....................................34
Exploded View .........................................................34
Removal and Installation .........................................34
SILL MOLDING .................................................36
Exploded View .........................................................36
Removal and Installation .........................................36
DOOR SASH COVER .......................................37
Exploded View .........................................................37
Removal and Installation .........................................37
Revision: 2010 May2011 QX56

PRECAUTIONSEXT-3
< PRECAUTION >
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M A
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EXT
N
O P
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006367589
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 whether 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 inoper ative, which could increase the risk of personal injury or death in
the event of a collision that would result in air ba g 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 “SRS AIR BAG”.
 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 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 minutes before performing any service.
Precaution Necessary for Steering Wh eel Rotation after Battery Disconnect
INFOID:0000000006367590
NOTE:
 Before removing and installing any control units, first tu rn the push-button ignition switch to the LOCK posi-
tion, then disconnect both 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 batte ry 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 wil l 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

FAX-1
TRANSMISSION & DRIVELINE
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SECTION FA X
A
B
FA X
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CONTENTS
FRONT AXLE
2WD
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
PREPARATION ............................................5
PREPARATION .............................................. .....5
Commercial Service Tools .................................. ......5
SYMPTOM DIAGNOSIS ...............................6
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING ........................ .....
6
NVH Troubleshooting Chart ................................ ......6
PERIODIC MAINTENANCE ..........................7
FRONT WHEEL HUB AND KNUCKLE ......... .....7
Inspection ............................................................ ......7
REMOVAL AND INSTALLATION ................8
FRONT WHEEL HUB AND KNUCKLE ......... .....8
Exploded View .................................................... ......8
Removal and Installation ...........................................8
Inspection ..................................................................9
SERVICE DATA AND SPECIFICATIONS
(SDS) ......... ................................. ..................
10
SERVICE DATA AND SPECIFICATIONS
(SDS) .............................................................. ....
10
Wheel Hub and Bearing Assembly ..................... ....10
4WDPRECAUTION ...............
...............................
11
PRECAUTIONS .................................................11
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ....
11
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect ...................................
11
Precautions for Drive Shaft ......................................12
PREPARATION ...........................................13
PREPARATION .................................................13
Special Service Tools .......................................... ....13
Commercial Service Tools .......................................13
SYMPTOM DIAGNOSIS ..............................15
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING ...........................
15
NVH Troubleshooting Chart ................................ ....15
PERIODIC MAINTENANCE ........................16
FRONT WHEEL HUB AND KNUCKLE ............16
Inspection ............................................................ ....16
FRONT DRIVE SHAFT .....................................17
Inspection ................................................................17
REMOVAL AND INSTALLATION ...............18
FRONT WHEEL HUB AND KNUCKLE ............18
Exploded View ..................................................... ....18
Removal and Installation .........................................18
Inspection ................................................................20
FRONT DRIVE SHAFT BOOT ..........................21
Exploded View .........................................................21
Removal and Installation .........................................21
Inspection ................................................................21
FRONT DRIVE SHAFT .....................................22
Revision: 2010 May2011 QX56

PRECAUTIONSFAX-3
< PRECAUTION > [2WD]
C
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G H
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M A
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FA X
N
O P
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006271838
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 whether 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 inoper ative, which could increase the risk of personal injury or death in
the event of a collision that would result in air ba g 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 “SRS AIR BAG”.
 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 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 minutes before performing any service.
Precaution Necessary for Steering Wh eel Rotation after Battery Disconnect
INFOID:0000000006271942
NOTE:
 Before removing and installing any control units, first tu rn the push-button ignition switch to the LOCK posi-
tion, then disconnect both 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 batte ry 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 wil l 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