service INFINITI QX56 2011 Factory Service Manual

PERIODIC MAINTENANCEMA-9
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NOTE:
(1) After 60,000 miles (96,000 km) or 48 months, inspect every 15,000 miles (24,000 km) or 12 months. Replace the drive belts i
f found
damaged or if the auto belt tensioner reading reaches the maximum limit.
(2) Maintenance-free item. For service procedures, refer to FL section.
(3) First replacement interval is 105,000 miles (168,000 km) or 84 months. After first replacement, replace every 75,000 miles (120,000
km) or 60 months. Use only Genu ine NISSAN Long Life Antifreeze/Coo lant (blue) or equivalent with proper mixture ratio of 50% anti-
freeze and 50% demineralized or distilled water. Mixing any other type of coolant or the use of non-distilled water will reduce the life
expectancy of the factory-fill coolant.
(4) Periodic maintenance is not required. However, if valve noise increases, inspect valve clearance.
* Maintenance items and intervals with “*” are recommended by INFINITI for reliable vehicle operation. The owner need not perfo rm
such maintenance in order to maintain the emission warranty or manufacturer recall liability. Other maintenance items and inter vals are
required.
CHASSIS AND BODY
Abbreviations: R = Replace. I = Inspec t. Correct or replace if necessary.
NOTE:
(1) Automatic transmission fluid is maintenance-free.
(2) Refer to “Tire rotation” under the “General maintenance” heading earlier in this section.
Engine oil R R R R R R R R
MA-17
Engine oil filter (Use genuine
NISSAN engine oil filter or equiv-
alent.)RRRR R RRR
MA-18
Spark plugs (Iridium-tipped type) Replace every 105,000 miles (168,000 km). MA-19
Intake & exhaust valve clear-
ance*NOTE (4)
EM-12
MAINTENANCE OPERATIONMAINTENANCE INTERVAL
Reference Sec-
tion - Page or -
Content Title
Perform at number of miles, kilo-
meters or months, whichever
comes first. Miles x 1,000
(km x 1,000)
Months 7.5
(12)
6 15
(24)
12 22.5
(36)
18 30
(48)
24 37.5
(60)
30 45
(72)
36 52.5
(84)
42 60
(96)
48
MAINTENANCE OPERATION MAINTENANCE INTERVAL
Reference Sec-
tion - Page or - Content Title
Perform at number of miles, kilo-
meters or months, whichever
comes first. Miles x 1,000
(km x 1,000) Months 7.5
(12) 6 15
(24) 12 22.5
(36) 18 30
(48) 24 37.5
(60) 30 45
(72) 36 52.5
(84) 42 60
(96) 48
Brake lines & cables I I I I MA-28
Brake fluid R RMA-28
Brake pads & rotors I I I IMA-30
BR-16
BR-18
BR-16
BR-18
Transfer fluid & differential gear
oil
IIIIMA-21MA-24
MA-25
Automatic transmission fluid NOTE (1)
—
Steering gear & linkage, axle &
suspension parts II
MA-31
MA-32
Tire rotation NOTE (2) MA-4WT-63
Drive shaft boots and propeller
shaft (4WD models) IIIIMA-33MA-22
MA-23
MA-23
Exhaust system I I
MA-21
In-cabin microfilter R R R RVTL-17
Revision: 2010 May2011 QX56

MA-10
< PERIODIC MAINTENANCE >
RECOMMENDED FLUIDS AND LUBRICANTS
RECOMMENDED FLUIDS AND LUBRICANTS
Fluids and LubricantsINFOID:0000000006220904
*1: For further details, see “Engine Oil Recommendation”.
*2: Using automatic transmission fluid other than Genuine NISSAN Matic S ATF will cause deterioration in driveability and autom atic
transmission durability, and may damage the automatic transmission, which is not covered by the INFINITI new vehicle limited wa rranty.
*3: DEXRON™ VI type ATF may also be used.
*4: Available in mainland U.S.A. through an INFINITI dealer.
*5: Using transfer fluid other t han Genuine NISSAN Transfer Fluid will damage the transfer , which is not covered by the INFINITI new
vehicle limited warranty. See an INFINITI retailer for recommended transfer fluid.
*6: For hot climates, Viscosity SAE 90 is suitable for ambient temperatures above 0 °C (32 °F)
*7: See an INFINITI dealer for service for synthetic oil.
*8: Using Hydraulic Suspen sion fluid other than Genuine NISSAN Hydraulic Susp ension fluid will damage the Hydraulic Suspension,
which is not covered by the INFINITI new vehicle limited warranty. See an INFINITI retailer for recommended hydraulic suspensio n fluid.
*9: The fluid capacity is the reference value.
Engine Oil RecommendationINFOID:0000000006287732
NISSAN recommends the use of an energy conservi ng oil in order to improve fuel economy.
Select only engine oils that meet the American Petroleum Institute (API) certification and International Lubri-
cant Standardization and Approval Committee (ILSAC) ce rtification and SAE viscosity standard. These oils
have the API certification mark on t he front of the container. Oils which do not have the specified quality label
should not be used as they could cause engine damage.
Capacity (Approximate) Recommended Fluids/Lubricants
US measure Imp measure Liter
Engine oil
Drain and refill With oil filter change 6-7/8 qt 5-3/4 qt 6.5
 Engine oil with API Certification Mark
*1
 Viscosity SAE 5W-30
Without oil filter change 6-4/8 qt 5-1/2 qt 6.2
Dry engine (engine overhaul) 8 qt 6-3/4 qt 7.6
Cooling system With reservoir tank 15
-6/8 qt 13-1/8 qt 14.9
Genuine NISSAN Long Life Antifreeze/
Coolant (blue) or equivalent
Reservoir tank 1 qt 7/8 qt 1.0
Automatic transmission fluid 10-5/8 qt
*98-3/4 qt*910.0*9Genuine NISSAN Matic S ATF *2
Power steering fluid 1-1/8 qt 7/8 qt 1.0
Genuine NISSAN PSF or equivalent*3
Brake fluid — — —Genuine NISSAN Super Heavy Duty
Brake Fluid*4 or equivalent DOT 3 (US FM-
VSS No. 116)
Transfer fluid 3-1/8 pt 2-5/8 pt 1.5 Genuine NISSAN Transfer Fluid for
ATX90A transfer*
5
Differential gear oilFront 1-5/8 pt 1-3/8 pt 0.75
Genuine NISSAN Differential Oil Hypoid
Super GL-5 80W-90 or API GL-5, Viscosity
SAE 80W-90*
6
Rear 3/3/4 pt 3-1/8 pt 1.75Genuine NISSAN Differential Oil Synthetic
75W-90 or API GL-5 synthetic gear oil, Vis-
cosity SAE 75W-90*7
Suspension fluid — — —
Genuine NISSAN Hydraulic Suspension
Fluid*8
Multi-purpose grease — — — NLGI No. 2 (Lithium soap base)
Revision: 2010 May2011 QX56

RECOMMENDED FLUIDS AND LUBRICANTSMA-11
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Anti-Freeze Coolant Mixture RatioINFOID:0000000006287733
The engine cooling system is filled at the factory with
a high-quality, year-round, anti-freeze coolant solution.
The anti-freeze solution contains rust and corrosion inhi bitors. Therefore, additional cooling system additives
are not necessary.
CAUTION:
When adding or replacing coolant, be sure to use only Genuine NISSAN Long Life Antifreeze/Coolant
(blue) or equivalent with the proper mixture ratio of 50% anti-freeze and 50% demineralized or distilled
water.
Mixing any other type of coolant or the use of non- distilled water will reduce the life expectancy of the
factory-fill coolant.
1. API certification mark 2. API service symbol
SAIA1514E
For outside temperatures down to: Genuine NISSAN Anti-freeze
Coolant or equivalent Demineralized water or dis-
tilled water
° C °F
-35 -30 50% 50%
Revision: 2010 May2011 QX56

ENGINE MAINTENANCEMA-13
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 Check if the reservoir tank engine coolant level is within the “MIN”
to “MAX” when the engine is cool.
 Adjust the engine coolant level if necessary. WARNING:
Never remove reservoir tank cap when engine is hot.
LEAKAGE
 To check for leakage, apply pressure to the cooling system with theradiator cap tester and radiator cap tester adapter (commercial
service tool) (A).
WARNING:
Never remove radiator cap and reservoir tank cap when
engine is hot. Serious burns could occur from high-pressure
engine coolant escaping from water inlet.
CAUTION:
Higher test pressure than specified may cause radiator dam-
age.
NOTE:
In a case that engine coolant decreas es, fill radiator with engine coolant.
 If anything is found, repair or replace damaged parts.
ENGINE COOLANT : DrainingINFOID:0000000006394845
WARNING:
 Never remove radiator cap and reservoir tank cap when engine is hot. Serious burns could occur
from high-pressure engine co olant escaping from radiator.
 Wrap a thick cloth around the caps. Slowly turn them a quarter of a turn to release built-up pressure.
Carefully remove the caps by turning it all the way.
1. Open radiator drain plug (1) at the bottom of radiator, and then remove radiator cap and reservoir tank cap.
When draining all of engine cool ant in the system, open water drai n plug on cylinder block. Refer
to EM-103, "
Setting".
2. Remove reservoir tank if necessary, and drain engine coolant and clean reservoir tank before installing.
3. Check drained engine coolant for contaminants such as rust, corrosion or discoloration. If contaminated, flush the engine cooling system. Refer to MA-15, "
ENGINE COOLANT : Flushing".
ENGINE COOLANT : RefillingINFOID:0000000006394846
1. Install reservoir tank if removed, and radiator drain plug.
CAUTION:
Be sure to clean drain plug and install with new O-ring. Refer to CO-13, "
Exploded View".
A: MAX
B: MIN
JPBIA0102ZZ
Testing pressure : Refer to CO-23, "Radiator".
JPBIA3432ZZ
2 : Front under cover
: Vehicle front
JPBIA3430ZZ
Revision: 2010 May2011 QX56

MA-16
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ENGINE MAINTENANCE
 Pull negative-pressure valve to open it, and check that it closecompletely when released.
- Check that there is no dirt or damage on the valve seat of reservoir
tank cap negative-pressure valve.
- Check that there are no unusualness in the opening and closing conditions of negative-pressure valve.
 Check reservoir tank cap relief pressure.
- When connecting reservoir tank cap to the radiator cap tester (commercial service tool) and the radiator cap tester adapter (com-
mercial service tool) (A), apply engine coolant to the cap seal sur-
face.
 Replace reservoir tank cap if there is an unusualness related to the above three.
CAUTION:
When installing reservoir tank cap, thoroughly wipe out the water inlet filler neck to remove any waxy
residue or foreign material.
RADIATOR
RADIATOR : InspectionINFOID:0000000006394849
Check radiator for mud or clogging. If nec essary, clean radiator as per the following:
 Be careful not to bend or damage radiator fins.
 When radiator is cleaned without removal, remove all surrounding parts such as radiator cooling fan shroud. Then tape harness and connectors to prevent water from entering.
1. Apply water by hose to the back side of the radiator core vertically downward.
2. Apply water again to all radiator core surfaces once per minute.
3. Stop washing if any stains no longer flow out from radiator.
4. Blow air into the back side of radiator core vertically downward.  Use compressed air lower than 490 kPa (4.9 bar, 5 kg/cm
2, 71 psi) and keep distance more than 30 cm
(11.8 in).
5. Blow air again into all the radiator core su rfaces once per minute until no water sprays out.
FUEL LINES
SMA967B
Standard and limit : Refer to CO-23, "Radiator".
JPBIA0109ZZ
Revision: 2010 May2011 QX56

SERVICE DATA AND SPECIFICATIONS (SDS)
MA-35
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
DRIVE BELTS
DRIVE BELTS : Drive BeltsINFOID:0000000006394853
DRIVE BELT
ENGINE COOLANT
ENGINE COOLANT : Periodical Maintenance SpecificationINFOID:0000000006394856
ENGINE COOLANT CAPACITY (APPROXIMATELY)
Unit: (US qt, Imp qt)
ENGINE OIL
ENGINE OIL : Periodical Maintenance SpecificationINFOID:0000000006394855
ENGINE OIL CAPACITY (APPROXIMATE)
Unit: (US qt, Imp qt)
SPARK PLUG
SPARK PLUG : Spark PlugINFOID:0000000006394854
SPARK PLUG
Unit: mm (in)
ROAD WHEEL
ROAD WHEEL : Road WheelINFOID:0000000006349771
ALUMINUM WHEEL
Tension of drive belts Belt tension is not necessary, as it is automatically adjusted by drive belt auto-tensioner.
Engine coolant capacity [With reservoir tank (“MAX” level)] 14.9 (15-6/8, 13-1/8)
Reservoir tank engine coolant capacity (At “MAX” level) 1.0 (1, 7/8)
Drain and refill
With oil filter change 6.5 (6-7/8, 5-3/4)
Without oil filter change 6.2 (6-4/8, 5-1/2)
Dry engine (engine overhaul) 7.6 (8, 6-3/4)
Make NGK
Standard type DILKAR7B11
Gap Standard 1.1 (0.043)
Limit 1.25 (0.049)
Item Limit
Radial runout Lateral deflection
Less than 0.3 mm (0.012 in)
Vertical deflection
Allowable unbalance Dynamic (At flange) Less than 7 g (0.25 oz) (one side)
Static (At flange) Less than 14 g (0.49 oz)
Revision: 2010 May2011 QX56

MIR-1
DRIVER CONTROLS
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SECTION MIR
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CONTENTS
MIRRORS
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
SYSTEM DESCRIPTION ..............................6
COMPONENT PARTS ................................... .....6
DOOR MIRROR ..................................................... ......6
DOOR MIRROR : Component Parts Location ..........6
DOOR MIRROR : Component Description ...............6
INSIDE MIRROR .................................................... ......7
INSIDE MIRROR : Component Description ..............7
SYSTEM ..............................................................8
DOOR MIRROR SYSTEM ..................................... ......8
DOOR MIRROR SYSTEM : System Diagram ..........8
DOOR MIRROR SYSTEM : System Description ......8
AUTO ANTI-DAZZLING INSIDE MIRROR SYS-
TEM ........................................................................ ......
9
AUTO ANTI-DAZZLING INSIDE MIRROR SYS-
TEM : System Description .........................................
9
ECU DIAGNOSIS INFORMATION ..............10
DRIVER SEAT CONTROL UNIT, AUTOMAT-
IC DRIVE POSITIONER CONTROL UNIT ..... ....
10
List of ECU Reference ........................................ ....10
WIRING DIAGRAM ......................................11
DOOR MIRROR SYSTEM .................................11
Wiring Diagram .................................................... ....11
AUTO ANTI-DAZZLING INSIDE MIRROR
SYSTEM ............................................................
19
Wiring Diagram - INSIDE MIRROR SYSTEM - ... ....19
BASIC INSPECTION ....... ............................21
DIAGNOSIS AND REPAIR WORKFLOW ........21
Work Flow ............................................................ ....21
DTC/CIRCUIT DIAGNOSIS .........................22
DOOR MIRROR REMOTE CONTROL
SWITCH .............................................................
22
OPEN/CLOSE SWITCH ......................................... ....22
OPEN/CLOSE SWITCH : Component Inspection ....22
SYMPTOM DIAGNOSIS ..............................23
REVERSE INTERLOCK DOOR MIRROR
DOES NOT OPERATE ......................................
23
Diagnosis Procedure ........................................... ....23
SQUEAK AND RATTLE TROUBLE DIAG-
NOSES ..............................................................
24
Work Flow ................................................................24
Inspection Procedure ...............................................26
Diagnostic Worksheet ..............................................28
REMOVAL AND INSTALLATION ...............30
INSIDE MIRROR ...............................................30
Exploded View ..................................................... ....30
Removal and Installation .........................................30
OUTSIDE MIRROR ...........................................32
Exploded View .........................................................32
DOOR MIRROR ASSEMBLY ....................................32
Revision: 2010 May2011 QX56

PRECAUTIONSMIR-3
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006257245
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:0000000006257246
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

PREPARATIONMIR-5
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PREPARATION
PREPARATION
Commercial Service ToolsINFOID:0000000006257218
Tool name Description
Remover tools Removes the clips, pawls and metal clips
JMKIA3050ZZ
Revision: 2010 May2011 QX56

MIR-24
< SYMPTOM DIAGNOSIS >
SQUEAK AND RATTLE TROUBLE DIAGNOSES
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Work FlowINFOID:0000000006257247
CUSTOMER INTERVIEW
Interview the customer if possible, to determine the c onditions 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 MIR-28, "
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 w hen 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 light 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 hi gh 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
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.
SBT842
Revision: 2010 May2011 QX56