belt INFINITI QX56 2008 Factory Service Manual

RSU-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004900767
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 severity 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 SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag 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 unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified 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 Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c 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:0000000004900768
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
Revision: March 2010 2008 QX56

RSU-10
< ON-VEHICLE REPAIR >
REAR SUSPENSION ASSEMBLY
Rear Load Leveling Air Suspension System
1. Seat belt latch anchor2. Stabilizer bar bushing3. Stabilizer bar clamp
4. Stabilizer bar 5. Connecting rod 6. Front lower link
7. Knuckle 8. Bushing9. Rear lower link
10. Shock absorber 11. Suspension arm12. Lower rubber seat
13. Coil spring 14. Upper rubber seat15. Rear suspension member
16. Spare tire bracket 17. Bound bumper Front
AWEIA0054GB
1. Rear load leveling air suspension
hose, RH 2. Shock absorber, RH
3. Height sensor
4. Rear load leveling air suspension hose, LH 5. Shock absorber, LH
6. Rear load leveling air suspension
compressor assembly
Front
Revision: March 2010 2008 QX56

RSU-12
< REMOVAL AND INSTALLATION >
REAR SUSPENSION MEMBER
Rear Load Leveling Air Suspension System
REMOVAL
1. Use the CONSULT-III “EXHAUST SOLENOID” active test to release the air pressure from the rear load
leveling air suspension system.
2. Disconnect the electrical connectors for the height sensor and the rear load leveling air suspension com-
pressor assembly.
3. Unclip the rubber cover to access the rear load leveling air suspension compressor assembly.
1. Seat belt latch anchor 2. Stabilizer bar bushing3. Stabilizer bar clamp
4. Stabilizer bar 5. Connecting rod 6. Front lower link
7. Knuckle 8. Bushing9. Rear lower link
10. Shock absorber 11. Suspension arm12. Lower rubber seat
13. Coil spring 14. Upper rubber seat15. Rear suspension member
16. Spare tire bracket 17. Bound bumper Front
AWEIA0054GB
1. Rear load leveling air suspension
hose, RH 2. Shock absorber, RH
3. Height sensor
4. Rear load leveling air suspension hose, LH 5. Shock absorber, LH
6. Rear load leveling air suspension
compressor assembly (includes the
bracket and rubber cover)
Front
Revision: March 2010 2008 QX56

REAR SUSPENSION MEMBERRSU-13
< REMOVAL AND INSTALLATION >
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4. Disconnect the rear load leveling air suspension hoses at the rear load leveling air suspension compressor assembly.
• To disconnect the hoses, push in on the lock ring using a suit-able tool and pull the hose out.
5. Remove both of the rear wheel and tire assemblies using power tool.
6. Remove the brake caliper without disconnecting the brake hoses, using power tool. Reposition the brake caliper out of the
way using a suitable wire. Refer to BR-36, "
Removal and Instal-
lation of Brake Caliper and Disc Rotor" .
CAUTION:
• Do not crimp or stretch the brake hose when reposition- ing the brake caliper out of the way.
• Do not press brake pedal while the brake caliper is removed.
7. Remove the spare tire.
8. Remove both lower shock bolts.
9. Disconnect the two rear ABS sensor electrical connectors.
10. Remove the two rear drive shafts. Refer to RAX-10, "
Removal and Installation" .
11. Remove the rear final drive. Refer to DLN-248, "
Removal and Installation" .
12. Remove the EVAP canister bolt from the top of the rear suspension member.
13. Disconnect the parking brake cables from the brackets on the rear suspension member.
14. Disconnect parking brake cables at equalizer. Refer to PB-7, "
Removal and Installation"
15. Set a suitable jack to support each of the rear lower links and the
coil spring tension.
16. Remove both of the rear lower link outer bolts and lower the jack to remove the rear coil springs.
17. Remove the two bolts to disconnect the seat belt latch anchor from the rear suspension member.
18. Disconnect both of the connecting r ods from the front lower link.
19. Set a suitable jack under the rear suspension member.
20. Remove the six rear suspension member bolts.
21. Slowly lower the jack to remove the rear suspension member, suspension arm, front and rear lower links and stabilizer bar as
an assembly.
22. If necessary, remove the suspension arm, spare tire bracket, height sensor, rear load leveling air suspension hoses, stabilizer
bar, knuckle, and front and rear lower links from the rear sus-
pension member.
INSPECTION AFTER REMOVAL
Check the rear suspension member for deformation, cracks, and other damage and replace if necessary.
INSTALLATION
Installation is in the reverse order of removal.
LEIA0074E
LEIA0077E
LEIA0075E
Revision: March 2010 2008 QX56

SB-1
RESTRAINTS
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SECTION SB
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CONTENTS
SEAT BELT
PRECAUTION ....... ........................................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
2
Precaution for Seat Belt Service ...............................3
ON-VEHICLE REPAIR ..................................4
SEAT BELTS .......................................................4
Removal and Installation of Front Seat Belt ........ .....4
Removal and Installation of Second Row Seat Belt
.....
7
Removal and Installation of Third Row Seat Belt .....9
Seat Belt Inspection ............................................. ....11
LATCH (LOWER ANCHORS AND TETHER
FOR CHILDREN) SYSTEM ...............................
14
Removal and Installation .........................................14
TOP TETHER STRAP CHILD RESTRAINT .....15
Removal and Installation .........................................15
Revision: March 2010 2008 QX56

SB-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004886894
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 severity 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 SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag 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 unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified 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 Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c 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:0000000004886895
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
Revision: March 2010 2008 QX56

PRECAUTIONSSB-3
< PRECAUTION >
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5. When the repair work is completed, return the ignition switch to the ″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of al l control units using CONSULT-III.
Precaution for Seat Belt ServiceINFOID:0000000001537286
CAUTION:
• Before removing the seat belt pre-tensioner assembly, turn the ignition switch OFF, disconnect both
battery cables and wait at least 3 minutes.
• After replacing or reinstalling seat belt pre-tensioner assembly, or reconnecting seat belt pre-ten- sioner assembly connector, make sure entire SRS operates properly. Refer to SRC-13, "
SRS Opera-
tion Check".
• Do not disassemble buckle or seat belt assembly.
• Do not reuse seat belt anchor bolts after removal. Replace with new ones.
• Replace anchor bolts if th ey are deformed or worn out.
• Never oil tongue and buckle.
• If any component of seat belt assembly is questio nable, do not repair. Replace the whole seat belt
assembly.
• If webbing is cut, frayed, or damaged, replace seat belt assembly.
• When replacing seat belt assembly, u se a genuine NISSAN seat belt assembly.
AFTER A COLLISION
WARNING:
• Inspect all seat belt assemblies including retractors and attaching hardware after any collision.
• NISSAN recommends that all seat belt assemblies in use during a collision be replaced unless the
collision was minor and the belts show no damage and continue to operate properly. Failure to do so
could result in serious personal injury in an acci dent. Seat belt assemblies not in use during a colli-
sion should also be replaced if either damage or im proper operation is noted. Seat belt pre-tensioner
should be replaced even if the seat belts are not in use during a frontal collision in which the air bags
are deployed.
Replace any seat belt assembly (including anchor bolts) if:
• The seat belt was in use at the time of a collision (except for minor collisions and the belts, retractors and
buckles show no damage and continue to operate properly).
• The seat belt was damaged in an accident. (i.e., torn webbing, bent retractor or guide, etc.)
• The seat belt attaching point was damaged in an accident. Inspect the seat belt attaching area for damage or distortion and repair as necessary before installing a new seat belt assembly.
• Anchor bolts are deformed or worn out.
• The seat belt pre-tensioner should be replaced even if t he seat belts are not in use during the collision in
which the air bags are deployed.
Revision: March 2010 2008 QX56

SB-4
< ON-VEHICLE REPAIR >
SEAT BELTS
ON-VEHICLE REPAIR
SEAT BELTS
Removal and Installation of Front Seat BeltINFOID:0000000001537287
FRONT SEAT BELT RETRACTOR
Removal
CAUTION:
1. Assist handle 2. Assist handle screw cover3. D-ring anchor bolt cover
4. Seat belt buckle 5. Seat belt retractor and belt assembly
LH 6. Anchor cover
7. Seat belt pre-tensioner connector 8. Center pillar lower finisher 9. Seat belt anchor bracket
10. Center pillar 11. Center pillar upper finisher12. Seat belt height adjuster
13. Seat belt height adjuster finisher
AWHIA0231GB
Revision: March 2010 2008 QX56

SEAT BELTSSB-5
< ON-VEHICLE REPAIR >
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• Before servicing SRS, turn the igni tion switch off, disconnect both battery cables and wait at least 3
minutes.
1. Disconnect both battery cables. then wait at least 3 minutes.
2. Remove the center pillar upper/lower finishers. Refer to INT-14, "
Removal and Installation".
3. Remove the retractor anchor bolt, retractor bolt upper, then remove the retractor and belt assembly. • On RH side, disconnect the seat belt tension sensor.
4. Disconnect the seat belt pre-tensioner electrical connector. CAUTION:
• For removing pre-tensioner connector, insert a thinscrewdriver (1) wrapped in tape (3) into the notch. Lift the
locking tab to unlock (2), then remove the connector.
• Install the pre-tensioner co nnector with the locking tab
raised, then push the locking tab into the connector to
lock (4).
Installation
Installation is in the reverse order of removal.
• Install the seat belt retractor and belt assembly bolt upper first.
• Make sure the seat belt height adjuster is lo cked in the lowest position during installation.
FRONT SEAT BELT BUCKLE
1. Seat belt retractor and belt assembly
RH 2. Seat belt lower anchor RH (seat belt
tension sensor) 3. Anchor cover RH (LH similar)
4. Seat belt lower anchor LH 5. Seat belt anchor bracket6. Seat belt retractor and belt assembly
LH
7. Center pillar A. Lower anchor boltB. Anchor bracket bolt
C. Retractor anchor bolt D. Retractor bolt upper ⇐Vehicle front
WHIA0346E
WHIA0279E
Revision: March 2010 2008 QX56

SB-6
< ON-VEHICLE REPAIR >
SEAT BELTS
Removal
1. Disconnect both battery cables, then wait at least 3 minutes.
2. Remove the front seat. Refer to SE-49, "
Removal and Installation".
3. Remove the seat cushion. Refer to SE-71, "
Disassembly and Assembly".
4. Disconnect the seat belt buckle pre-tensioner electrical connector. CAUTION:
• For removing pre-tensioner connector, insert a thinscrewdriver (1) wrapped in tape (3) into the notch. Lift the
locking tab to unlock (2), then remove the connector.
• Install the pre-tensioner connector with the locking tab raised, then push the locking tab into the connector to
lock (4).
5. Remove screw and seat cushion inner finisher.
6. Remove the anchor bolt, then remove front seat belt buckle from the seat frame.
Installation
Installation is in the reverse order of removal.
WHIA0279E
WHIA0280E
Revision: March 2010 2008 QX56