2011 INFINITI QX56 service

FSU-12
< REMOVAL AND INSTALLATION >
FRONT COIL SPRING AND SHOCK ABSORBER
When installing the shock absorber attachment to shock absorber, wrap a shop cloth around
shock absorber to protect it from damage.
2. Compress coil spring using a spring compressor (commercial service tool), and install it onto shock absorber.
CAUTION:
 Be sure a spring compressor is securely attach ed to coil spring. Compress coil spring.
 Set coil spring so that its paint marks face downward.
3. Apply soapy water to dust cover. CAUTION:
Never use machine oil.
4. Install dust cover, bound bumper cover, rubber seat , bushings, tube, shock absorber mounting bracket,
and washer to shock absorber.
 Install the shock absorber mounting bracket (1) as shown in the figure.
 Check that the lower end of the coil spring (B) is positioned at the spring lower seat of the shock absorber.
5. Secure piston rod tip so that piston rod does not turn, then tighten piston rod lock nut to the specified torque.
6. Gradually release a spring compressor, and remove coil spring. CAUTION:
Loosen while making sure co il spring attachment position
does not move.
7. Remove the shock absorber attachment from shock absorber.
Inspection and AdjustmentINFOID:0000000006225644
INSPECTION AFTER REMOVAL (WITH HBMC)
Shock Absorber assembly
Check shock absorber assembly for oil leakage or other malfunctions. Replace it if necessary.
INSPECTION AFTER DISASSEMBLY (WITHOUT HBMC)
Shock Absorber
Check the following items, and replace the part if necessary.
 Shock absorber for deformation, cracks or damage.
 Piston rod for damage, uneven wear or distortion.
 Oil leakage.
Shock Absorber Mounting Bracket and Rubber Parts Inspection
Check shock absorber mounting bracket for cracks and rubber parts for wear. Replace it if necessary.
Coil Spring
Check coil spring for cracks, wear or damage. Replace it if necessary.
INSPECTION AFTER INSTALLATION
1. Check wheel sensor harness for proper connection. Refer to BRC-134, "FRONT WHEEL SENSOR :
Exploded View".
2. Check wheel alignment. Refer to FSU-7, "
Inspection".
Angle (a) : 90
°
A : Shock absorber mounting bracket bolt
JPEIA0221ZZ
Revision: 2010 May2011 QX56

SERVICE DATA AND SPECIFICATIONS (SDS)
FSU-21
< SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Wheel AlignmentINFOID:0000000006225652
*1: The minimum value and maximum value is the same as the nominal value.
Measure value under unladen
*2 conditions.
*2: Fuel, engine coolant and lubricant are full. Spare tire, jack, hand tools and mats are in designated positions.
Ball JointINFOID:0000000006225653
Wheel HeightINFOID:0000000006225654
Item Standard
Measurement wheel Left side Right side
Camber
Degree minute (Decimal degree) Minimum
−0 °45 ′ ( −0.75 °) −0°55 ′ ( −0.91 °)
Nominal 0 ° 00 ′ (0.00 °) −0°10 ′ ( −0.17 °)
Maximum 0 ° 45 ′ (0.75 °)0 ° 35 ′ (0.58 °)
Left and right difference 0 ° 33 ′ (0.55 °) or less
Caster
Degree minute (Decimal degree) Minimum 2
° 20 ′ (2.34 °)2 ° 40 ′ (2.67 °)
Nominal 3 ° 05 ′ (3.08 °)3 ° 25 ′ (3.42 °)
Maximum 3 ° 50 ′ (3.83 °)4 ° 10 ′ (4.16
° )
Left and right difference 0 ° 45 ′ (0.75 °) or less
Kingpin inclination
Degree minute (Decimal degree) Minimum — —
Nominal
13° 20 ′ (13.33 °)
*113 ° 25 ′ (13.42 °)*1
Maximum — —
To e - i n To t a l t o e - i n
Distance
Minimum In 1.4 mm (0.055 in)
Nominal In 2.4 mm (0.094 in)
Maximum In 3.4 mm (0.134 in)
Toe angle (left wheel or right
wheel)
Degree minute (Decimal degree) Minimum In 0
° 03 ′ (0.05 °)
Nominal In 0 ° 05 ′ (0.08 °)
Maximum In 0 ° 07 ′ (0.11 °)
Item Standard
Swing torque Lower link 0.5 – 6.4 N·m (0.06 – 0.65 kg-m, 5 – 56 in-lb)
Upper link 0.5 – 4.9 N·m (0.06 – 0.49 kg-m, 5 – 43 in-lb)
Measurement on spring balance (groove position) Lower link 11.4 – 145.4 N (1.17 – 14.83 kg, 2.57 – 32.68 lb)
Measurement on spring balance (cotter pin hole position) Upper link 8.1 – 79.0 N (0.83 – 8.05 kg, 1.83 – 17.75 lb)
Rotating torque Lower link 0.5 – 6.4 N·m (0.06 – 0.65 kg-m, 5 – 56 in-lb)
Upper link 0.5 – 4.9 N·m (0.06 – 0.49 kg-m, 5 – 43 in-lb)
Axial end play 0 mm (0 in)
Item Standard
Front (Hf) 903 mm (35.55 in)
Revision: 2010 May2011 QX56

FSU-22
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Measure value under unladen* conditions.
*: Fuel, engine coolant and lubricant are full. Spare tire, jack, hand tools and mats are in designated positions.Rear (Hr) 890 mm (35.04 in)
Item Standard
SFA746B
Revision: 2010 May2011 QX56

GI-1
GENERAL INFORMATION
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CONTENTS
GENERAL INFORMATION
HOW TO USE THIS MANU AL ......................3
HOW TO USE THIS MANUAL ....................... .....3
Description .......................................................... ......3
Terms ........................................................................3
Units ..........................................................................3
Contents ....................................................................3
Relation between Illustrations and Descriptions .......4
Components ..............................................................4
HOW TO FOLLOW TROUBLE DIAGNOSES .....6
Description ................................................................6
How to Follow Test Groups in Trouble Diagnosis ......6
Key to Symbols Signifying Measurements or Pro-
cedures ............................................................... ......
7
HOW TO READ WIRING DIAGRAMS ................9
Connector Symbols ............................................. ......9
Sample/Wiring Diagram -Example- .........................10
Connector Information .............................................12
ABBREVIATIONS .......................................... ....14
Abbreviation List .................................................. ....14
TIGHTENING TORQUE OF STANDARD
BOLTS ................................................................
19
Description .......................................................... ....19
Tightening Torque Table (New Standard Includ-
ed) ...........................................................................
19
RECOMMENDED CHEMICAL PRODUCTS
AND SEALANTS ................................................
22
Recommended Chemical Products and Sealants ....22
VEHICLE INFORMATION ............................23
IDENTIFICATION INFORMATION ................. ....23
Model Variation ................................................... ....23
Information About Identification or Model Code ......23
Dimensions .............................................................25
Wheels & Tires ........................................................25
PRECAUTION ..............................................26
PRECAUTIONS .................................................26
Description ........................................................... ....26
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................
26
Precautions For Xenon Headlamp Service .............26
Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect ...................................
27
Precaution for Procedure without Cowl Top Cover ....27
General Precautions ................................................27
Three Way Catalyst .................................................29
Multiport Fuel Injection System or Engine Control
System .....................................................................
29
Hoses ......................................................................29
Engine Oils ..............................................................30
Air Conditioning .......................................................31
Fuel ..........................................................................31
LIFTING POINT .................................................32
Pantograph Jack ......................................................32
Garage Jack and Safety Stand ................................32
2-Pole Lift ................................................................33
TOW TRUCK TOWING .....................................34
Tow Truck Towing ...................................................34
Vehicle Recovery (Freeing a Stuck Vehicle) ...........34
BASIC INSPECTION ...................................36
SERVICE INFORMATION FOR ELECTRICAL
INCIDENT ..........................................................
36
Work Flow ............................................................ ....36
Control Units and Electrical Parts ............................36
How to Check Terminal ...........................................37
Intermittent Incident .................................................40
Circuit Inspection .....................................................43
CONSULT-III/GST CHECKING SYSTEM .........48
Description ...............................................................48
CONSULT-III Function and System Application*1 ....48
Revision: 2010 May2011 QX56

GI-2
CONSULT-III/GST Data Link Connector (DLC)
Circuit .....................................................................
50
Wiring Diagram - CONSULT-III/GST CHECKING
SYSTEM - ........... ................................. ...................
51
INSPECTION AND ADJUSTMENT ................ ...65
ADDITIONAL SERVICE WHEN REMOVING BAT-
TERY NEGATIVE TERMINAL ............................... ...
65
ADDITIONAL SERVICE WHEN REMOVING
BATTERY NEGATIVE TERMINAL : Required
Procedure After Battery Disconnection ...................
65
Revision: 2010 May2011 QX56

GI-4
< HOW TO USE THIS MANUAL >
HOW TO USE THIS MANUAL
Relation between Illustrations and Descriptions
INFOID:0000000006280839
The following sample explains the relationship between t he part description in an illustration, the part name in
the text and the service procedures.
ComponentsINFOID:0000000006280840
 THE LARGE ILLUSTRATIONS are exploded views (see the following) and contain tightening torques, lubri-
cation points, section number of the PARTS CATALOG (e.g. SEC. 440) and other information necessary to
perform repairs.
The illustrations should be used in reference to service matters only. When ordering parts, refer to the appro-
priate PARTS CATALOG .
Components shown in an illustration may be identified by a circled number. When this style of illustration is
used, the text description of the components will follow the illustration.
SAIA0519E
Revision: 2010 May2011 QX56

ABBREVIATIONSGI-17
< HOW TO USE THIS MANUAL >
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ABBREVIATION DESCRIPTION P/S Power steering
PBR Potentio balance resistor
PCV Positive crankcase ventilation
PNP Park/Neutral position PSP Power steering pressurePTC Positive temperature coefficient
PTO Power takeoff
PWM Pulse width modulation
ABBREVIATION DESCRIPTION RAM Random access memoryRAS Rear active steer RH Right-hand
ROM Read only memory RPM Engine speed RR Rear
ABBREVIATION DESCRIPTION SAE Society of Automoti ve Engineers, Inc.
SCK Serial clock
SDS Service Data and Specifications SRT System readiness testSST Special Service Tools
ABBREVIATION DESCRIPTION TC Turbocharger
TCM Transmission control module TCS Traction control system TP Throttle position
TPMS Tire pressure monitoring system TSS Turbine shaft speed
TWC Three way catalytic converter
ABBREVIATION DESCRIPTION VDC Vehicle dynamics control systemVIN Vehicle identification number
VSS Vehicle speed sensor
ABBREVIATION DESCRIPTION WOT Wide open throttle
ABBREVIATION DESCRIPTION 1
11st range first gear
Revision: 2010 May2011 QX56

GI-22
< HOW TO USE THIS MANUAL >
RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS
RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS
Recommended Chemical Products and SealantsINFOID:0000000006280850
Refer to the following chart for help in selecting the appropriate chemical product or sealant.
Product Description Purpose Nissan North America
Part No. (USA) Nissan Canada Part
No. (Canada) Aftermarket Cross-
reference Part Nos.
1 Rear View Mirror Adhe-
sive Used to permanently re-
mount rear view mirrors to
windows.
999MP-AM000P 99998-50505 Permatex 81844
2 Anaerobic Liquid Gas-
ket For metal-to-metal flange
sealing.
Can fill a 0.38 mm (0.015
inch) gap and provide in-
stant sealing for most pow-
ertrain applications.
999MP-AM001P 99998-50503
Permatex 51813 and
51817
3 High Performance
Thread Sealant Provides instant sealing on
any threaded straight or
parallel threaded fitting.
(Thread sealant only, no
locking ability.)
 Do not use on plastic.
999MP-AM002P 999MP-AM002P Permatex 56521
4 Silicone RTV Gasket Maker
999MP-AM003P
(Ultra Grey)99998-50506
(Ultra Grey)Permatex Ultra Grey
82194;
Three Bond
1207,1215, 1216,
1217F, 1217G and
1217H
Nissan RTV Part No.
999MP-A7007
Gasket Maker for Maxima/
Quest 5-speed automatic
transmission
(RE5F22A) ––
Three Bond 1281B
or exact equivalent in
its quality
5 High Temperature,
High Strength Thread
Locking Sealant (Red)
Threadlocker 999MP-AM004P 999MP-AM004P Permatex 27200;
Three Bond 1360,
1360N, 1305 N&P,
1307N, 1335,
1335B, 1363B,
1377C, 1386B, D&E
and 1388
Loctite 648
6 Medium Strength
Thread Locking Seal-
ant (Blue) Threadlocker (service tool
removable)
999MP-AM005P 999MP-AM005P Permatex 24200,
24206, 24240,
24283 and 09178;
Three Bond 1322,
1322N, 1324 D&N,
1333D, 1361C,
1364D, 1370C and
1374
Revision: 2010 May2011 QX56