2011 INFINITI QX56 check oil

FRONT COIL SPRING AND SHOCK ABSORBERFSU-11
< REMOVAL AND INSTALLATION >
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12. Separate drive shaft from steering knuckle. (4WD) Refer to FAX-22, "Removal and Installation".
13. Remove front tube assembly A and front tube asse mbly B from shock absorber. (With HBMC) Refer to
SCS-32, "
FRONT TUBE ASSEMBLY : Removal and Installation".
14. Remove shock absorber.
15. Perform inspection after removal. (With HBMC) Refer to FSU-12, "
Inspection and Adjustment".
INSTALLATION
Note the following, and install in the reverse order of removal.
 Never tap on the ball joint cap of the stabilizer connecting rod with a hammer or a similar item when inserting
the stabilizer connecting rod into the lower link. (Without HBMC)
 Perform final tightening of bolts and nuts at the shock absorber lower side (rubber bushing), under unladen
conditions with tires on level ground.
 Perform inspection after installation. Refer to FSU-12, "
Inspection and Adjustment".
 Perform adjustment after installation. (With HBMC) Refer to FSU-12, "
Inspection and Adjustment".
 After replacing the shock absorber, always follow the disposal procedure to discard the shock absorber.
Refer to FSU-13, "
Disposal".
Disassembly and AssemblyINFOID:0000000006273960
CAUTION:
The shock absorber assembly can not be disassembled. (With HBMC)
DISASSEMBLY (WITHOUT HBMC)
CAUTION:
Never damage shock absorber piston rod wh en removing components from shock absorber.
1. Install shock absorber attachment [SST: ST35652000 ( −)]
(A) to shock absorber and secure it in a vise.
CAUTION:
When installing the shock ab sorber attachment to shock
absorber, wrap a shop cloth around shock absorber to pro-
tect it from damage.
2. Using a spring compressor (commercial service tool) (A), com- press coil spring between rubber seat and shock absorber until
coil spring with a spring compressor is free.
CAUTION:
Be sure a spring compresso r is securely attached coil
spring. Compress coil spring
3. Check coil spring with a spring compressor between rubber seat and shock absorber is free. And then remove piston rod lock nut
while securing the piston rod tip so that piston rod does not turn.
4. Remove washer, bushings, shock absorber mounting bracket, tube, rubber seat, bound bumper cover, dust cover from shock
absorber.
5. After removing coil spring with a spring compressor, then gradually release a spring compressor. CAUTION:
Loosen while making sure coil spri ng attachment position does not move.
6. Remove the shock absorber at tachment from shock absorber.
7. Perform inspection after disassembly. Refer to FSU-12, "
Inspection and Adjustment".
ASSEMBLY (WITHOUT HBMC)
1. Install shock absorber attachment [SST: ST35652000 ( −)] to shock absorber and secure it in a vise.
CAUTION:
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Revision: 2010 May2011 QX56

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
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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
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GI-26
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
DescriptionINFOID:0000000006280865
Observe the following precautions to ensure safe and proper servicing. These precautions are not
described in each individual section.
Precaution for Supplemental Restraint S ystem (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006280866
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.
Precautions For Xenon Headlamp ServiceINFOID:0000000006280867
WARNING:
Comply with the following warnings to prevent any serious accident.
 Disconnect the battery cable (negative terminal) or the power supply fuse before installing, remov-
ing, or touching the xenon headlamp (bulb included). The xenon headlamp contains high-voltage
generated parts.
 Never work with wet hands.
 Check the xenon headlamp ON-OFF status after assembling it to the vehicle. Never turn the xenon
headlamp ON in other conditions. Connect th e power supply to the vehicle-side connector.
(Turning it ON outside the lamp case m ay cause fire or visual impairments.)
 Never touch the bulb glass immediately after turning it OFF. It is extremely hot.
CAUTION:
Comply with the following cautions to prevent any error and malfunction.
 Install the xenon bulb securely. (Ins ufficient bulb socket installation may melt the bulb, the connec-
tor, the housing, etc. by high-v oltage leakage or corona discharge.)
 Never perform HID circuit in spection with a tester.
 Never touch the xenon bulb glass with ha nds. Never put oil and grease on it.
 Dispose of the used xenon bulb after packing it in thick vinyl without breaking it.
 Never wipe out dirt and cont amination with organic solven t (thinner, gasoline, etc.).
Revision: 2010 May2011 QX56

GI-28
< PRECAUTION >
PRECAUTIONS
 Before jacking up the vehicle, apply wheel chocks or other tireblocks to the wheels to prevent t he vehicle from moving. After jack-
ing up the vehicle, support the vehicle weight with safety stands at
the points designated for proper lifting before working on the vehi-
cle.
These operations should be done on a level surface.
 When removing a heavy component such as the engine or tran- saxle/transmission, be careful not to lose your balance and drop
them. Also, do not allow them to strike adjacent parts, especially
the brake tubes and master cylinder.
 Before starting repairs which do not require battery power: Turn off ignition switch.
Disconnect the negative battery terminal.
 If the battery terminals are disconnected, recorded memory of
radio and each control unit is erased.
 To prevent serious burns: Avoid contact with hot metal parts.
Do not remove the radiator cap when the engine is hot.
 Dispose of drained oil or the solvent used for cleaning parts in an appropriate manner.
 Do not attempt to top off the fuel tank after the fuel pump nozzle
shuts off automatically.
Continued refueling may cause fuel overflow, resulting in fuel spray
and possibly a fire.
 Clean all disassembled parts in the designated liquid or solvent prior to inspection or assembly.
 Replace oil seals, gaskets, packings, O-rings, locking washers,
cotter pins, self-locking nuts, etc. with new ones.
 Replace inner and outer races of tapered roller bearings and needle bearings as a set.
 Arrange the disassembled parts in accordance with their assembled locations and sequence.
 Do not touch the terminals of electrical com ponents which use microcomputers (such as ECM).
Static electricity may damage internal electronic components.
 After disconnecting vacuum or air hoses, atta ch a tag to indicate the proper connection.
 Use only the fluids and lubricants specified in this manual.
 Use approved bonding agent, sealants or their equivalents when required.
 Use hand tools, power tools (disassembly only) and recommended special tools where specified for safe and efficient service repairs.
 When repairing the fuel, oil, water, vacuum or exhaust systems, check all affected lines for leakage.
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GI-30
< PRECAUTION >
PRECAUTIONS
 To reinstall the rubber hose securely, check that hose insertionlength and orientation is correct. (If tube is equipped with hose
stopper, insert rubber hose into tube until it butts up against hose
stopper.)
HOSE CLAMPING
 If old rubber hose is re-used, install hose clamp in its original posi-tion (at the indentation where the old clamp was). If there is a trace
of tube bulging left on the old rubber hose, align rubber hose at
that position.
 Discard old clamps; replace with new ones.
 After installing plate clamps, apply force to them in the direction of the arrow, tightening rubber hose equally all around.
Engine OilsINFOID:0000000006280874
Prolonged and repeated contact with used engine oil may cause skin cancer. Try to avoid direct skin contact
with used oil.
If skin contact is made, wash thoroughly with soap or hand cleaner as soon as possible.
HEALTH PROTECTION PRECAUTIONS
 Avoid prolonged and repeated contact with oils, particularly used engine oils.
 Wear protective clothing, including impervious gloves where practicable.
 Do not put oily rags in pockets.
 Avoid contaminating clothes, pa rticularly underpants, with oil.
 Heavily soiled clothing and oil-impregnated footwear should not be worn. Overalls must be cleaned regu-
larly.
 First aid treatment should be obtained immediately for open cuts and wounds.
 Use barrier creams, applying them before each work period, to help the removal of oil from the skin.
 Wash with soap and water to ensure all oil is removed (skin cleansers and nail brushes will help). Prepara-
tions containing lanolin replace the natural skin oils which have been removed.
 Do not use gasoline, kerosene, diesel fuel, gas oil, thinners or solvents for cleaning skin.
 If skin disorders develop, obtain medical advice without delay.
 Where practical, degrease components prior to handling.
 Where there is a risk of eye contact, eye protection should be worn, for example, chemical goggles or face
shields; in addition an eye wash facility should be provided.
ENVIRONMENTAL PROTECTION PRECAUTIONS
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SERVICE INFORMATION FOR ELECTRICAL INCIDENTGI-37
< BASIC INSPECTION >
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 Do not apply excessive shock to the control unit by dropping or hit- ting it.
 Be careful to prevent condensation in the control unit due to rapid
temperature changes and do not let water or rain get on it. If water
is found in the control unit, dry it fully and then install it in the vehi-
cle.
 Be careful not to let oil to get on the control unit connector.
 Avoid cleaning the control unit with volatile oil.
 Do not disassemble the contro l unit, and do not remove the upper
and lower covers.
 When using a DMM, be careful not to let test probes get close to each other to prevent the power transistor in the control unit from
damaging battery voltage because of short circuiting.
 When checking input and output signals of the control unit, use the
specified check adapter.
How to Check TerminalINFOID:0000000006280853
CONNECTOR AND TERMINAL PIN KIT
 Use the connector and terminal pin kits listed below when replacing connectors or terminals.
 The connector and terminal pin kits contain some of the most commonly used NISSAN/INFINITI connectors
and terminals. For detailed connector and terminal pin r eplacement procedures, refer to the latest NISSAN/
INFINITI CONNECTOR AND TERMINAL PIN SERVICE MANUAL.
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Revision: 2010 May2011 QX56

PRECAUTIONSHA-5
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- Never allow lubricant (A/C System Oil Type R) to come in contact with styrene foam parts. Damage
may result.
REFRIGERANT CONNECTION
A new type refrigerant connection has been introduced to a ll refrigerant lines except the following location.
 Expansion valve to evaporator
 Refrigerant pressure sensor to liquid tank
WARNING:
Check that all refrigerant is discharged into the recycling equipment and the pressure in the system is
less than atmospheric pressure. Then gradually loo sen the discharge side hose fitting and remove it.
CAUTION:
Observe the following when replacing or cleaning refrigerant cycle components.
 Store it in the same way at it is when mounted on the car when the compressor is removed. Failure
to do so will cause lubricant to enter the low-pressure chamber.
 Use always a torque wrench and a b ack-up wrench when connecting tubes.
 Plug immediately all openings to prevent entry of dust and mois ture after disconnecting tubes.
 Connect the pipes at the final stag e of the operation when installing an air conditioner in the vehicle.
Never remove the seal caps of pipes and other compon ents until just before required for connection.
 Allow components stored in cool areas to warm to working area temperature before removing seal
caps. This prevents condensation from forming inside A/C components.
 Remove thoroughly moisture from the refriger ation system before charging the refrigerant.
 Replace always used O-rings.
 Apply lubricant to circle of th e O-rings shown in illustration when connecting tube. Be careful not to
apply lubricant to threaded portion.
 O-ring must be closely attached to the groove portion of tube.
 Be careful not to damage O-ring and tube when replacing the O-ring.
 Connect tube until a click can be heard. Then tighten the nut or bolt by hand. Check that the O-ring is
installed to tube correctly.
 Perform leakage test and make sure that there is no leakage from connections after connecting line.
Disconnect that line and replace the O-ring when the refrigerant leaking point is found. Then tighten
connections of seal seat to the specified torque.
COMPRESSOR
CAUTION:
 Plug all openings to prevent moisture and foreign matter from entering.
 Store it in the same way at it is when moun ted on the car when the compressor is removed.
 Follow “MAINTENANCE OF LUBRICANT LEVEL IN CO MPRESSOR” exactly when replacing or repair-
ing compressor. Refer to HA-22, "
Description".
 Keep friction surfaces between clutch and pulley cl ean. Wipe it off by using a clean waste cloth
moistened with thinner if the surface is contaminated with lubricant.
Name A/C System Oil Type S
RHA861F
Revision: 2010 May2011 QX56