2011 INFINITI QX56 oil

SCS-38
< REMOVAL AND INSTALLATION >[HBMC]
HYDRAULIC BODY-MOTION CONTROL SYSTEM
 Completely engage hooks on frame when installing accumulator
assembly.
ACCUMULATOR : InspectionINFOID:0000000006256026
INSPECTION AFTER REMOVAL
 O-ring must be free of scratches and damage.
 Pipe and tube must be free of scratches and damage.
INSPECTION AFTER INSTALLATION
Check oil leakage, twists, deformation, cont act with other parts, and loose connections.
ADJUSTMENT AFTER INSTALLATION
Perform air bleeding. Refer to SCS-18, "Work Procedure".
ACCUMULATOR : DisposalINFOID:0000000006256027
CAUTION:
 Always wear safety goggles.
 Always wear safety gloves.
 Be careful since pressure is higher when temperature is high.
 Be careful since metal shavings or oi l may be blown away by compressed gas.
 Discard drained oil in accordance with local laws and regulations.
WORK PROCEDURE
1. Remove both tanks using an oil filter wrench.
2. Secure tank using a vise.
3. Drill a hole as shown in the figure ( z) using an electric drill.
Drain gas and oil.
NOTE:
 Gas is colorless, odorless, and harmless.
 Use an electric drill with a drill bit of approximately 4 mm (0.16 in).
 Drilling a hole is easier when electric drill speed is slow.
PPMU, MIDDLE TUBE AS SEMBLY, PPMU PIPE
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Revision: 2010 May2011 QX56

HYDRAULIC BODY-MOTION CONTROL SYSTEMSCS-43
< REMOVAL AND INSTALLATION > [HBMC]
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PPMU, MIDDLE TUBE ASSEMBLY, PPMU PIPE : InspectionINFOID:0000000006256030
INSPECTION AFTER REMOVAL
 O-ring must be free of scratches and damage.
 Pipe and tube must be free of scratches and damage.
INSPECTION AFTER INSTALLATION
Check oil leakage, twists, deformation, contact with other parts, and loose connections.
ADJUSTMENT AFTER INSTALLATION
Perform air bleeding. Refer to SCS-18, "Work Procedure".
PPMU, MIDDLE TUBE ASSEMBLY , PPMU PIPE : DisposalINFOID:0000000006256031
CAUTION:
 Always wear safety goggles.
 Always wear safety gloves.
 Be careful since pressure is higher when temperature is high.
 Be careful since metal shavings or oi l may be blown away by compressed gas.
 Discard drained oil in accordance wi th local laws and regulations.
WORK PROCEDURE
1. Remove both tanks using an oil filter wrench.
2. Secure tank using a vise.
3. Drill a hole as shown in the figure ( z) using an electric drill.
Drain gas and oil.
NOTE:
 Gas is colorless, odorless, and harmless.
 Use an electric drill with a drill bit of approximately 4 mm (0.16
in).
 Drilling a hole is easier when electric drill speed is slow.
REAR TUBE ASSEMBLY
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Revision: 2010 May2011 QX56

SCS-46
< REMOVAL AND INSTALLATION >[HBMC]
HYDRAULIC BODY-MOTION CONTROL SYSTEM
3. Remove lower side pipe (A) of rear shock absorber RH.
4. Remove pipe (A) from left side rear joint (B).
5. Remove mounting bolts of bracket of rear tube assembly B.
6. Remove mounting bolts of bracket of rear left brake hose, and
then free hose.
7. Remove rear tube assembly B from the vehicle.
8. Perform inspection after removal. Refer to SCS-46, "
REAR
TUBE ASSEMBLY : Inspection".
INSTALLATION
Note the following, and install in the reverse order of removal.
 Apply genuine NISSAN hydraulic suspension fluid to O-ring.
 Check connection portion of each piping for dirt or dust.
REAR TUBE ASSEMBLY : InspectionINFOID:0000000006256034
INSPECTION AFTER REMOVAL
 O-ring must be free of scratches and damage.
 Pipe and tube must be free of scratches and damage.
INSPECTION AFTER INSTALLATION
Check oil leakage, twists, deformation, contact with other parts, and loose connections.
ADJUSTMENT AFTER INSTALLATION
Perform air bleeding. Refer to SCS-18, "Work Procedure".
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Revision: 2010 May2011 QX56

SE-4
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006237842
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.
Service NoticeINFOID:0000000006217352
 When removing or installing various parts, place a cloth or padding onto the vehicle body to prevent
scratches.
 Handle trim, molding, instruments, grille, etc. carefull y during removing or installing. Be careful not to oil or
damage them.
 Apply sealing compound where necessary when installing parts.
 When applying sealing compound, be careful that t he sealing compound never protrudes from parts.
 When replacing any metal parts (for example body outer panel, members, etc.), always take rust prevention
measures.
Precaution for WorkINFOID:0000000006217353
 When removing or disassembling each component, be careful not to damage or deform it. If a component
may be subject to interference, al ways protect it with a shop cloth.
 When removing (disengaging) components with a screwdriver or similar tool, always wrap the component
with a shop cloth or vinyl tape to protect it.
 Protect the removed parts with a shop cloth and keep them.
 Replace a deformed or damaged clip.
 If a part is specified as a non-reusable part, always replace it with new one.
 Always tighten bolts and nuts securely to the specified torque.
 After reinstallation is complete, always check that each part works normally.
 Follow the steps below to clean components.
- Water soluble foul: Dip a soft cloth into lukewarm water, and wring the water out of the cloth to wipe the fouled area.
Then rub with a soft and dry cloth.
Revision: 2010 May2011 QX56

PRECAUTIONSSE-5
< PRECAUTION >
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- Oily foul: Dip a soft cloth into lukewarm water with mild detergent (concentration: within 2 to 3%), and wipe
the fouled area.
Then dip a cloth into fresh water, and wring the water out of the cloth to wipe the detergent off. Then rub with
a soft and dry cloth.
 Never use organic solvent such as thinner, benzene, alcohol, and gasoline.
 For genuine leather seats, and use a genuine leather seat cleaner.
Revision: 2010 May2011 QX56

DIAGNOSIS SYSTEM (IPDM E/R)SEC-29
< SYSTEM DESCRIPTION > [WITH INTELLIGENT KEY SYSTEM]
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ACTIVE TEST
Te s t i t e m
*: Operates while the engine is running. DETENT SW
[Off/On]
Displays the status of the A/T shift selector (detention switch) judged by IPDM E/
R.
S/L RLY -REQ
[Off/On] Displays the status of the steering lock relay signal received from BCM via CAN
communication.
S/L STATE
[LOCK/UNLK/UNKWN] Displays the status of the steering lock judged by IPDM E/R.
OIL P SW
[Open/Close] Displays the status of the oil pressure switch judged by IPDM E/R.
HOOD SW
[Off/On] Displays the status of the hood switch judged by IPDM E/R.
HL WASHER REQ
[Off/On] Displays the status of the headlamp washer request signal received from BCM via
CAN communication.
THFT HRN REQ
[Off/On] Displays the status of the theft warning horn request signal received from BCM
via CAN communication.
HORN CHIRP
[Off/On] Displays the status of the horn reminder signal received from BCM via CAN com-
munication.
Monitor Item
[Unit] MAIN SIG-
NALS Description
Test item Operation Description
CORNERING LAMP LH
NOTE:
This item is indicated, but cannot be tested.
RH
HORN On Operates horn relay for 20 ms.
REAR DEFOGGER Off OFF
On Operates the rear window defogger relay.
FRONT WIPER Off OFF
Lo Operates the front wiper relay.
Hi Operates the front wiper relay and front wiper high relay.
MOTOR FAN* 1OFF
2 Transmits 50% pulse duty signal (PWM signal) to the cooling fan control module.
3 Transmits 75% pulse duty signal (PWM signal) to the cooling fan control module.
4
Transmits 100% pulse duty signal (PWM signal) to the cooling fan control mod-
ule.
HEAD LAMP WASHER On Operates the headlamp washer relay for 1 second.
EXTERNAL LAMPS Off OFF
TAIL Operates the tail lamp relay.
Lo Operates the headlamp low relay.
Hi
Operates the headlamp low relay and ON/OFF the headlamp high relay at 1 sec-
ond intervals.
Fog Operates the front fog lamp relay.
Revision: 2010 May2011 QX56

SR-12
< REMOVAL AND INSTALLATION >
DRIVER AIR BAG MODULE
4. Disconnect the driver air bag module harness connector.CAUTION:
 For installing/removing the driver air bag module harnessconnector, insert thin screwdriver wrapped in tape into
notch, lift lock and remove the connector.
 Install the connector with lock raised, and push lock into
the connector.
 After installing the conn ector, check that the lock is
pushed securely into it.
5. Remove the driver air bag module.
CAUTION:
 Always place the driver air bag module with pad side facing upward.
 Never impact the driver air bag module.
 Replace the driver air bag modu le if it has been dropped or
sustained an impact.
 Never insert any foreign objects (screwdriver , etc.) into the driver air bag module.
 Never disassemble the driver air bag module.
 Never expose the driver air bag module to temperatures exceeding 90 °C (194 °F).
 Never allow oil, grease, detergent, or water to come in contact with the driver air bag module.
INSTALLATION
Note the following item, and install in the reverse order of removal.
CAUTION:
 Never use the old TORX bolts after removal, replace with the new TORX bolts.
 Fix the driver air bag module harness to the harness fixing hook (A).
PHIA0953J
: Upward
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Revision: 2010 May2011 QX56

SPIRAL CABLESR-15
< REMOVAL AND INSTALLATION >
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4. Disconnect the spiral cable body side harness connectors (A) and steering angle sensor harness connector (B).
5. Remove the spiral cable fixing screws.
6. Pull out forward the spiral cable and steering sensor.
7. Remove steering angle sensor. Refer to BRC-139, "
Removal and Installation".
CAUTION:
 Never impact the spiral cable.
 Replace the spiral cable if it has been dropped or sustained
an impact.
 Never disassemble the spiral cable.
 Never apply lubricant to the spiral cable.
 Never allow oil, grease, detergent, or water to come in contact with the spiral cable.
INSTALLATION
Note the following item, and install in the reverse order of removal.
CAUTION:
 The spiral cable may snap during steering operation if the
cable is installed in an improper position.
The neutral position is set as follows.
 Carefully turn the spiral cable clockwise to the end position.
Then turn it counterclockwise (a bout 2 and a half turns) and
stop turning at the mark (B) on which the stopper insertion
holes are in the same position.
 The service part is installed in the neutral position by the
stopper and can be set without adjusting after the stopper is
removed.
 Never over turn the spiral cable or go beyond the number of
turns required. (These will cause the cable to snap.)
 Adjust the spiral cable locatin g pin (A) to the steering wheel
locating pin hole (C).
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Revision: 2010 May2011 QX56