2011 INFINITI QX56 check oil

SCS-30
< SYMPTOM DIAGNOSIS >[HBMC]
LARGE ROLL ANGLE
LARGE ROLL ANGLE
DescriptionINFOID:0000000006256018
During cornering, inclination of the vehi
cle to outer side of corner is large.
Inspection ProcedureINFOID:0000000006256019
1.CHECK APPEARANCE
1. Visually check that the exterior parts (e.g. suspension spring) have no malfunctions.
2. Visually check tube and pipe for crush or oil leakage.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace damaged parts.
2.CHECK NEEDLE VALVE OF PPMU
Check that needle valves A and C are tightened to the specified
torque.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Tighten to the specified torque.
3.SYSTEM PRESSURE CHECK
Check system pressure. Refer to SCS-15, "
Work Procedure".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Perform adjustment of system pressure. Refer to SCS-18, "
Work Procedure".
4.CHECK INTERNAL LEAKAGE
Check internal leakage. Refer to SCS-20, "
Work Procedure".
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 5.
5.CHECK MALFUNCTIONING PART
Identify malfunctioning part. Refer to SCS-22, "
Work Procedure".
Does the pressure increase?
YES >> Replace the PPMU. Refer to SCS-39, "PPMU, MIDDLE TUBE ASSEMBLY, PPMU PIPE :
Removal and Installation".
NO >> GO TO 6.
6.CHECK SHOCK ABSORBER
Identify malfunctioning shock absorber. Refer to SCS-24, "
Work Procedure".
>> Replace identified shock absorber. Refer to FSU-10, "
Removal and Installation" (front), RSU-8,
"Removal and Installation" (rear).
Tightening torque : 8.3 N·
m (0.85 kg-m, 73 in-lb)
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Revision: 2010 May2011 QX56

SCS-34
< REMOVAL AND INSTALLATION >[HBMC]
HYDRAULIC BODY-MOTION CONTROL SYSTEM
3. Disconnect pipe (A) of accumulator assembly RH from right side
3-way (B).
4. Disconnect lower side pipe (B) of front shock absorber RH.
5. Remove protector A with power tool.
6. Remove mounting bolts of right side 3-way.
7. Remove protector B with power tool.
8. Remove mounting bolts of each bracket.
9. Remove front tube assembly B from the vehicle.
10. Perform inspection after removal. Refer to SCS-34, "
FRONT
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.
 Completely insert guide (A) to guide hole on frame when installing
left side 3-way.
 For tightening torque for pipe of accumulator assembly LH, refer to SCS-35, "
ACCUMULATOR : Exploded View".
 For tightening torque for pipe of accumulator assembly RH, refer to
SCS-35, "
ACCUMULATOR : Exploded View".
FRONT TUBE ASSEMBLY : InspectionINFOID:0000000006256023
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
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A : Upper side pipe
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Revision: 2010 May2011 QX56

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]
C
D
F
G H
I
J
K L
M A
B
SCS
N
O P
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

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

SR-18
< REMOVAL AND INSTALLATION >
FRONT PASSENGER AIR BAG MODULE
3. Disconnect the front passenger air bag module fixing pawls withremover tool (A).
4. Lift up front passenger air bag module, and then remove front passenger air bag module.
CAUTION:
 Always place the front passenger air bag module with pad side facing upward.
 Never impact the front passenger air bag module.
 Replace the front passenger air bag module if it has been dropped or sustained an impact.
 Never insert any foreign objects (screwdriver, etc.) into the front passenger air bag module.
 Never disassemble the front passenger air bag module.
 Never expose the front passenger air bag module to temperatures exceeding 90 °C (194 °F).
 Never allow oil, grease, detergent, or water to co me in contact with the front passenger air bag mod-
ule.
INSTALLATION
Note the following item, and install in the reverse order of removal.
CAUTION:
 Never use the old fixing bolts afte r removal, replace with the new bolts.
 Never damage the harness while installing.
 If malfunction is detected by the air bag warnin g lamp, after repair or replacement of the malfunc-
tioning parts, reset the memory using sel f-diagnosis or CONSULT-III. Refer to SRC-14, "
On Board
Diagnosis Function" or SRC-19, "CONSULT-III Function".
 After the work is completed, check that no system malfunction is detected by air bag warning lamp.
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: Upward
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Revision: 2010 May2011 QX56