2011 INFINITI QX56 warning

SEAT BELT WARNING LAMP DOES NOT TURN OFF
SBC-61
< SYMPTOM DIAGNOSIS >
C
D E
F
G
I
J
K L
M A
B
SBC
N
O P
SEAT BELT WARNING LAMP DOES NOT TURN OFF
Diagnosis ProcedureINFOID:0000000006237941
1.CHECK SEAT BELT WARNING LAMP CIRCUIT
Check seat belt warning lamp circuit. Refer to SBC-57, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace the malfunctioning parts.
2.CONFIRM THE OPERATION
Confirm the operation again.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-40, "Intermittent Incident".
NO >> GO TO 1.
Revision: 2010 May2011 QX56

SBC-62
< SYMPTOM DIAGNOSIS >
SEAT BELT WARNING LAMP DOES NOT TURN ON
SEAT BELT WARNING LAMP DOES NOT TURN ON
Diagnosis ProcedureINFOID:0000000006237942
1.CHECK SEAT BELT WARNING LAMP CIRCUIT
Check seat belt warning lamp circuit. Refer to SBC-57, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace the malfunctioning parts.
2.CONFIRM THE OPERATION
Confirm the operation again.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-40, "Intermittent Incident".
NO >> GO TO 1.
Revision: 2010 May2011 QX56

SCS-4
< PRECAUTION >[HBMC]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint S
ystem (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006256134
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.
Precaution Necessary for Steering W heel Rotation after Battery Disconnect
INFOID:0000000006256136
NOTE:
 Before removing and installing any control units, first tu rn the push-button ignition switch to the LOCK posi-
tion, then disconnect bot h 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 bat tery 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 wi ll 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

PRECAUTIONSSCS-5
< PRECAUTION > [HBMC]
C
D
F
G H
I
J
K L
M A
B
SCS
N
O P
5. When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn
the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering
wheel will lock when the push-button ignition switch is turned to LOCK position.)
6. Perform self-diagnosis check of a ll control units using CONSULT-III.
Precaution for Procedure without Cowl Top CoverINFOID:0000000006256138
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
Precaution for Hydraulic Body-Motion Control SystemINFOID:0000000006255996
WARNING:
 Always check the piping for loose co nnections, damage, or twists before starting operation, since
pressure in hydraulic circuit becom es high during air bleeding operation.
 When repairing or replacing a malfunctioning pa rt, always release pressure from hydraulic circuit,
since dangerous conditions may be created when oil leakage occurs during air bleeding operation.
 Clean surrounding areas of oil inlet and air bleeder usi ng steam before starting operation, since there may
be mud on it.
 Always decrease pressure when removing a system related part, since system pressure is high.
 Seal the removed part using vinyl tape for preventi ng dirt from getting on or entering the removed part.
 Check system pressure again 1 day or more after bleeding operation is complete, since system pressure may decrease when air bleeding is insufficient.
 Use Genuine NISSAN Hydraulic Suspension Fluid for suspension fluid.
 Never reuse drained suspension fluid.
 Check for suspension fluid leakage after removing a system-related part.
PIIB3706J
Revision: 2010 May2011 QX56

SCS-18
< BASIC INSPECTION >[HBMC]
AIR BLEEDING METHOD
AIR BLEEDING METHOD
Work ProcedureINFOID:0000000006256011
WARNING:
 Always check the piping for loose co
nnections, damage, or twists before starting operation, since
pressure in hydraulic circuit b ecomes high during operation.
 When repairing or replacing a malfunctioning pa rt, always release pressure from hydraulic circuit,
since dangerous conditions may be created when oil leakage occurs during air bleeding operation.
CAUTION:
 Clean surrounding areas of oil injection jack and air bleeder using steam before starting operation,
since there may be mud on it.
 Clean suspension oil pump (special servi ce tool: KV40107700) jack with steam before use.
 Check system pressure again 1 day or more after bleeding operation is complete, since system pres-
sure may decrease when air bleeding is insufficient.
1. Lift up the vehicle.
2. Remove protector of PPMU.
3. Remove cap of oil injection jack.
4. Install hose (A) of a suspension oil pump (SST: KV40107700) to oil injection jack.
CAUTION:
Jack must be securely inserted until a click sound can be
heard.
5. Loosen pressure reducing valve (A) of hose portion of suspen- sion oil pump.
6. Set knob (A) of suspension oil pump to the direction as shown in the figure.
7. Close pressure reducing valve of hose portion of suspension oil pump while sending oil by applying pressure using suspension
oil pump. (Air bleeding in hose is complete.)
JSEIA0189ZZ
JSEIA0190ZZ
JSEIA0191ZZ
Revision: 2010 May2011 QX56

HYDRAULIC BODY-MOTION CONTROL SYSTEMSCS-35
< REMOVAL AND INSTALLATION > [HBMC]
C
D
F
G H
I
J
K L
M A
B
SCS
N
O P
ACCUMULATOR : Exploded ViewINFOID:0000000006256024
ACCUMULATOR : Removal and InstallationINFOID:0000000006256025
REMOVAL
Accumulator Assembly LH
WARNING:
1. O-ring 2. Accumulator assembly RH 3. Accumulator assembly LH :Vehicle front
:Apply genuine NISSAN hydraulic
suspension fluid
Refer to GI-4, "
Components" for symbols not described on the above.
JSEIA0230GB
Revision: 2010 May2011 QX56

SCS-36
< REMOVAL AND INSTALLATION >[HBMC]
HYDRAULIC BODY-MOTION CONTROL SYSTEM
Never remove mounting bolts of protector.
1. Reduce system pressure. Refer to
SCS-17, "
Work Procedure".
2. Disconnect pipe (A) of accumulator assembly LH from left side 3-way (B).
3. Disconnect pipe (A) of accumulator assembly LH from left side middle joint (B).
4. Separate chassis and body. Refer to DLK-251, "
Removal and
Installation".
5. Remove mounting bolts of each bracket.
6. Remove mounting bolts of accumulator assembly LH. WARNING:
Never remove mounting bolts of protector.
7. Remove accumulator assembly LH from the vehicle.
8. Perform inspection after removal. Refer to SCS-38, "
ACCUMU-
LATOR : Inspection".
Accumulator Assembly RH
WARNING:
JSEIA0200GB
JSEIA0195ZZ
JSEIA0199ZZ
JSEIA0200GB
Revision: 2010 May2011 QX56

HYDRAULIC BODY-MOTION CONTROL SYSTEMSCS-37
< REMOVAL AND INSTALLATION > [HBMC]
C
D
F
G H
I
J
K L
M A
B
SCS
N
O P
Never remove mounting bolts of protector.
1. Reduce system pressure. Refer to SCS-17, "
Work Procedure".
2. Disconnect pipe (A) of accumulator assembly RH from right side 3-way (B).
3. Remove pipe (A) of accumulator assembly RH from right side middle joint (B).
4. Separate chassis and body. Refer to DLK-251, "
Removal and
Installation".
5. Remove mounting bolts of each bracket.
6. Remove mounting bolts of accumulator assembly RH. WARNING:
Never remove mounting bolts of protector.
7. Remove accumulator assembly RH from the vehicle.
8. Perform inspection after removal. Refer to SCS-38, "
ACCUMU-
LATOR : 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.
JSEIA0200GB
JSEIA0197ZZ
JSEIA0201ZZ
JSEIA0200GB
Revision: 2010 May2011 QX56