2011 INFINITI QX56 belt

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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
REMOVAL AND INSTALLATION ................4
FRONT SEAT BELT ....................................... .....4
SEAT BELT RETRACTOR .................................... ......4
SEAT BELT RETRACTOR : Inspection ....................4
SEAT BELT RETRACTOR : Exploded View .............6
SEAT BELT RETRACTOR : Removal and Instal-
lation ..........................................................................
6
SEAT BELT BUCKLE ........................................... ......7
SEAT BELT BUCKLE : Inspection ............................7
SEAT BELT BUCKLE : Exploded View .....................8
SEAT BELT BUCKLE : Removal and Installation ......8
SECOND SEAT BELT ........................................10
SEAT BELT RETRACTOR .................................... ....10
SEAT BELT RETRACTOR : Inspection ..................10
SEAT BELT RETRACTOR : Exploded View ...........11
SEAT BELT RETRACTOR : Removal and Instal-
lation ........................................................................
13
SEAT BELT BUCKLE ............................................ ....14
SEAT BELT BUCKLE : Inspection ..........................14
SEAT BELT BUCKLE : Exploded View ...................14
SEAT BELT BUCKLE : Removal and Installation ....16
THIRD SEAT BELT ...........................................17
SEAT BELT RETRACTOR .................................... ....17
SEAT BELT RETRACTOR : Inspection ..................17
SEAT BELT RETRACTOR : Exploded View ...........19
SEAT BELT RETRACTOR : Removal and Instal-
lation ........................................................................
19
SEAT BELT BUCKLE ............................................ ....20
SEAT BELT BUCKLE : Inspection ..........................20
SEAT BELT BUCKLE : Exploded View ...................21
SEAT BELT BUCKLE : Removal and Installation ....21
LATCH SYSTEM FOR CHILDREN ...................22
Exploded View .........................................................22
Removal and Installation .........................................22
Revision: 2010 May2011 QX56

SB-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006369606
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:0000000006369607
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.
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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 Seat Belt ServiceINFOID:0000000006217608
CAUTION:
 Before removing the front seat belt pre-tensioner assembly, turn the ignition switch off, disconnect
battery negative terminal and wait at least 3 minutes.
 Never use electrical test equipment for front seat belt pre-tensioner connector.
 After replacing or reinstalling front seat belt pre-tensioner assembly, or reconnecting front seat belt
pre-tensioner connector, check th e system function. Refer to SRC-14, "
Description".
 Never use disassembled buckle or seat belt assembly.
 Replace anchor bolts if th ey are deformed or worn out.
 Never oil tongue and buckle.
 If any component of seat belt assembly is questiona ble, do not repair. Replace the entire 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 attached hardware after any collision.
NISSAN recommends that all seat belt assemblies in u se during a collision be replaced unless the col-
lision was minor and the belts show no damage a nd continue to operate properly. Failure to do so
could result in serious personal injury in an accide nt. 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-tensioners
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).
 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 front seat belt pre-tensioner should be replaced even if the seat belts are not in use during the collision
in which the air bags are deployed.
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SB-4
< REMOVAL AND INSTALLATION >
FRONT SEAT BELT
REMOVAL AND INSTALLATION
FRONT SEAT BELT
SEAT BELT RETRACTOR
SEAT BELT RETRACTOR : InspectionINFOID:0000000006217615
AFTER A COLLISION
WARNING:
Inspect all seat belt assemblies including retractors and attached hardware after any collision.
NISSAN/INFINITI recommends that all seat belt assemblies in use during a collision be replaced
unless the collision was minor and th e belts show no damage and continue to operate properly. Fail-
ure to do so could result in seri ous personal injury in an accident. Seat belt assemblies not in use dur-
ing a collision should also be re placed if either damage or improper operation was noted. Seat belt
pre-tensioners should be replaced even if the seat be lts were not in use during a frontal collision in
which the air bags were deployed.
Replace any seat belt assembly (including anchor bolts) if:
 The seat belt is in use at the time of a collision (e xcept for minor collisions and the belts, retractors and buck-
les show no damage and continue to operate properly).
 The seat belt is damaged in an accident (i.e. to rn webbing, bent retractor or guide, etc.).
 The seat belt attaching point is damaged in an accident . Inspect the seat belt attaching area for damage or
distortion and repair if necessary before installing a new seat belt assembly.
 Anchor bolts are deformed or worn out.
 The seat belt pre-tensioners must be replaced even if t he seat belts were not in use during the collision in
which the air bags were deployed.
PRELIMINARY CHECKS
1. Check the seat belt warning lamp for proper operation as per the following:
a. Turn ignition switch ON. The seat belt warning lamp should illuminate.
b. Fasten driver seat belt. The seat belt warning lamp should turn OFF.
2. If the air bag warning lamp is blinking, perform self-diagnosis with CONSULT-III and air bag warning lamp. Refer to SRC-14, "
Description".
3. Check that the seat belt retractor, s eat belt anchor and buckle bolts are tightened firmly.
4. Check the shoulder seat belt guide and shoulder belt height adjuster for front seats. Check that guide
swivels freely and that webbing lays flat and does not bind in guide. Check that height adjuster operates
properly and holds securely.
5. Check retractor operation:
a. Fully extend the seat belt webbing and c heck for twists, tears or other damage.
b. Allow the seat belt to retract. Check that webbing retu rns smoothly and completely into the retractor. If the
seat belt does not return smoothly, wipe the inside of the loops with a clean paper cloth. Dirt build-up in the
loops of the upper anchors can cause the seat belts to retract slowly.
c. Fasten the seat belt. Check that seat belt returns sm oothly and completely to the retractor. If the webbing
does not return smoothly, the cause may be an accumulation of dust or dirt. Use the “SEAT BELT TAPE
SET” and perform the following steps.
Inspect the front seat belt through-anchor
1. Pull the seat belt out to a length of 500 mm (19.69 in) or more.
2. Fix the seat belt at the center pillar webbing opening with a clip or other device.
3. Pass a thin wire through the through-anchor webbing opening. Hold both ends of the wire and pull it tightly while moving it up and down several times along the webbing opening surface to remove dirt
stuck there.
4. Any dirt that cannot be removed with the wir e can be removed by cleaning the opening with a clean
cloth.
5. Apply tape at the point where the webbi ng contacts the through-anchor webbing opening.
NOTE:
Apply the tape so that there is no slack or wrinkling.
6. Remove the clip fixing the seat belt and check that the webbing returns smoothly.
6. Repeat steps above if necessary to check the other seat belts.
Revision: 2010 May2011 QX56

FRONT SEAT BELTSB-5
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SEAT BELT RETRACTOR ON-VEHICLE CHECK
Emergency Locking Retractors (ELR) and Automatic Locking Retractors (ALR)
NOTE:
All seat belt retractors are Emergency Locking Retr actors (ELR) type. In an emergency (sudden stop) the
retractor will lock and prevent the webbing from extendi ng any further. All 3-point type seat belt retractors
except the driver seat belt also have an Automati c Locking Retractors (ALR) mode. The ALR mode (also
called child restraint mode) is used when installing child seats. The ALR mode is activated when the seat belt
is fully extended. When the webbing is then retracted part ially, the ALR mode automatically locks the seat belt
in a specific position so the webbi ng cannot be extended any further. To c ancel the ALR mode, allow the seat
belt to fully wind back into the retractor.
Check the seat belt retractors with the following test(s ) to determine if a retractor assembly is operating prop-
erly.
ELR Function Stationary Check
Grasp the shoulder webbing and pull forward quickly. The retractor should lock and prevent the belt from
extending further.
ALR Function Stationary Check
1. Pull out the entire length of seat bel t from retractor until a click is heard.
2. Retract the webbing partially. A clicking noise should be heard as the webbing retracts indicating that the
retractor is in the Automatic Locking Retractors (ALR) mode.
3. Grasp the seat belt and try to pull out the retractor. The webbing must lock and not extend any further. If it
does not operate normally, replace the retractor assembly.
4. Allow the entire length of the webbing to retract to cancel the automatic locking mode.
ELR Function Moving Check
WARNING:
Perform the following test in a safe, open area clear of other vehicles and obstructions (for example, a
large, empty parking lot). Road surface must be p aved and dry. Never perform the following test on
wet or gravel roads or on public streets and highways. This could result in an accident and serious
personal injury. The driver and passenger must be prepared to brace themselves in the event that the
retractor does not lock.
1. Fasten driver seat belt. Buckle a passenger into the seat for the belt that is to be tested.
2. Proceed to the designated safe area.
3. Drive the vehicle at approximately 16 km/h ( 10 MPH). Notify any passengers of a pending sudden stop
and the driver and passenger must be prepared to brac e themselves in the event that the retractor does
not lock. Apply brakes firmly and make a very hard stop.
During stopping, seat belts should lock and not be extended. If the seat belt retractor assembly does not lock,
perform the retractor off-vehicle check.
SEAT BELT RETRACTOR OFF-VEHICLE CHECK
1. Remove the front seat belt retractor. Refer to SB-6, "SEAT BELT RETRACTOR : Removal and Installa-
tion".
2. Slowly pull out webbing while tilting the retracto r assembly forward from the mounted position without
twisting the retractor assembly as shown in the figure.
 The webbing can be pulled out when the angle (A) is 15
degrees or less.
 The webbing cannot be pulled out when the angle (B) is 27
degrees or more.
3. Replace the seat belt assembly if it does not operate normally.
A and B : Tilting angles : Vehicle front
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< REMOVAL AND INSTALLATION >
FRONT SEAT BELT
SEAT BELT RETRACTOR : Exploded View
INFOID:0000000006217616
SEAT BELT RETRACTOR : Removal and InstallationINFOID:0000000006217617
REMOVAL
CAUTION:
Before servicing SRS, turn the i gnition switch OFF, disconnect battery negative terminal and wait 3
minutes or more.
1. Remove the outer anchor.
1. Anchor nut 2. Shoulder anchor 3. Anchor bolt
4. Seat belt adjuster 5. Retaining washer 6. Seat belt pre-tensioner retractor (RH
side)
7. Outer anchor cover 8. Outer anchor 9. Spacer
10. Seat belt pre-tensioner retractor (LH side) 11. Lap pre-tensioner
Refer to GI-4, "
Components" for symbols in the figure.
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1. Remove the outer anchor cover.
2. Remove the outer anchor mounting anchor bolt.
2. Remove the front kicking plate inner and rear kicking plate inner. Refer to INT-20, "
KICKING PLATE
INNER : Removal and Installation".
3. Remove the center pillar lower garnish. Refer to INT-22, "
CENTER PILLAR LOWER GARNISH : Removal
and Installation".
4. Remove the center pillar upper garnish. Refer to INT-22, "
CENTER PILLAR UPPER GARNISH : Removal
and Installation".
5. Remove the shoulder anchor mounting anchor nut and then remove the shoulder anchor.
6. Remove seat belt pre-tensioner retractor. 1. Disconnect the pre-crash seat belt connector.
2. Disconnect the seat belt pre-tensioner connector. CAUTION:
 For installing/removing seat belt pre-tensioner con-
nector, insert thin screwdriver wrapped in tape into
notch, lift lock and remove connector.
 Install connector with lock raised, and push lock into
connector.
 After installing the connector, check that the lock is
pushed securely into it.
3. Remove the seat belt pre-tensioner retractor mounting anchor bolt and screw.
INSTALLATION
Install in the reverse order of removal.
SEAT BELT BUCKLE
SEAT BELT BUCKLE : InspectionINFOID:0000000006217618
AFTER A COLLISION
WARNING:
Inspect all seat belt assemblies in cluding retractors and attached hardware after any collision.
NISSAN/INFINITI recommends that all seat belt assemblies in use during a collision be replaced
unless the collision was minor and th e belts show no damage and continue to operate properly. Fail-
ure to do so could result in serious personal inju ry in an accident. Seat belt assemblies not in use dur-
ing a collision should also be replaced if either da mage or improper operation was noted. Seat belt
pre-tensioners should be replaced even if the seat be lts were not in use during a frontal collision in
which the air bags were deployed.
Replace any seat belt assembly (including anchor bolts) if:
 The seat belt is in use at the time of a collision (exc ept for minor collisions and the belts, retractors and buck-
les show no damage and continue to operate properly).
 The seat belt is damaged in an accident (i.e. to rn webbing, bent retractor or guide, etc.).
 The seat belt attaching point is damaged in an accident . Inspect the seat belt attaching area for damage or
distortion and repair if necessary before installing a new seat belt assembly.
 Anchor bolts are deformed or worn out.
 The seat belt pre-tensioner must be replaced even if t he seat belts were not in use during the collision in
which the air bags were deployed.
PRELIMINARY CHECKS
1. Check the seat belt warning lamp for proper operation as pen the following:
a. Turn ignition switch ON. The seat belt warning lamp should illuminate.
b. Fasten driver seat belt. The seat belt warning lamp should turn OFF.
2. If the air bag warning lamp is blinking, perform self-diagnosis using CONSULT-III and air bag warning
lamp. Refer to SRC-14, "
Description".
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< REMOVAL AND INSTALLATION >
FRONT SEAT BELT
3. Check that the seat belt retractor, seat belt anchor and buckle bolts are tightened firmly.
4. Repeat steps above if necessary to check the other seat belts.
SEAT BELT BUCKLE : Exploded ViewINFOID:0000000006368027
SEAT BELT BUCKLE : Re moval and InstallationINFOID:0000000006217620
REMOVAL
1. Remove the front seat assembly from vehicle. Refer to SE-112, "Removal and Installation".
1. Anchor nut 2. Shoulder anchor 3. Anchor bolt
4. Seat belt adjuster 5. Retaining washer 6. Seat belt pre-tensioner retractor (RH
side)
7. Outer anchor cover 8. Outer anchor 9. Spacer
10. Seat belt pre-tensioner retractor (LH side) 11. Lap pre-tensioner
Refer to GI-4, "
Components" for symbols in the figure.
JMHIA1566GB
Revision: 2010 May2011 QX56