INFINITI QX56 2006 Factory Service Manual

SB-2
PRECAUTIONS
Revision: November 20092006 QX56
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EHS00161
The Supplemental Restraint System such as “AIR 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 whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:

To avoid rendering the SRS inoperative, 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 per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for Seat Belt ServiceEHS00162
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 SRS-20, "
SRS Oper-
ation 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 they are deformed or worn out.

Never oil tongue and buckle.

If any component of seat belt assembly is questionable, 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, use 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 accident. Seat belt assemblies not in use during a
collision should also be replaced if either damage or improper 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 the seat belts are not in use during the collision in
which the air bags are deployed.

SEAT BELTSSB-3
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SB
Revision: November 2009 2006 QX56
SEAT BELTSPFP:86884
Removal and Installation of Front Seat Belt EHS001N0
1. Assist handle2. Assist handle screw cover3. D-ring anchor bolt cover
4. Seat belt buckle 5. Seat belt retractor and belt assem-
bly LH 6. Anchor cover
7. Seat belt pre-tensioner connector 8. Center pillar lower finisher 9. Seat belt anchor
10. Center pillar 11. Center pillar upper finisher12. Seat belt height adjuster
13. Seat belt height adjuster finisher
WHIA0277E

SB-4
SEAT BELTS
Revision: November 20092006 QX56
FRONT SEAT BELT RETRACTOR
Removal
CAUTION:

Before servicing SRS, turn the ignition switch off, disconnect both battery cables and wait at least
3 minutes.
1. Remove the center pillar upper/lower finishers. Refer to EI-35, "
BODY SIDE TRIM" .
2. Remove the seat belt retractor anchor bolts and seat belt retractor and belt assembly.

On RH side, disconnect the seat belt tension sensor.
3. Disconnect the seat belt pre-tensioner electrical connector. CAUTION:

For removing pre-tensioner connector, insert a thin
screwdriver (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).
Installation
Installation is in the reverse order of removal.

Install the seat belt retractor and belt assembly upper bolt first.

Ensure that seat belt height adjuster is locked in the lowest position during installation.
WHIA0278E
WHIA0279E

SEAT BELTSSB-5
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SB
Revision: November 2009 2006 QX56
FRONT SEAT BELT BUCKLE
Removal
1. Remove the front seat. Refer to SE-91, "FRONT SEAT" .
2. Remove the seat cushion. Refer to SE-96, "
SEAT CUSHION TRIM AND PAD (DRIVER) OR SEAT
CUSHION ASSEMBLY (PASSENGER)" .
3. Disconnect the seat belt buckle pre-tensioner electrical connector. CAUTION:

For removing pre-tensioner connector, insert a thin
screwdriver (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).
4. Remove screw and seat cushion inner finisher.
5. 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

SB-6
SEAT BELTS
Revision: November 20092006 QX56
Removal and Installation of Second Row Seat Belt EHS001N1
1. Seat belt height adjuster2. D-ring anchor bolt cover 3. D-ring anchor
4. Seat belt retractor and belt assem- bly 5. Seat belt buckle
6. Seat belt retractor cover
7. Push pin 8. Seat belt retractor and belt assem-
bly 9. Seat belt bezel
10. Seat belt buckle 11. Seat cushion finisher 12. Seat belt lower anchor
WHIA0281E

SEAT BELTSSB-7
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SB
Revision: November 2009 2006 QX56
REMOVAL
1. Remove seat belt lower anchor cover and bolt.
2. Remove the D-ring anchor bolt cover and D-ring anchor bolt.
3. Remove the upper and lower luggage area trim. Refer to EI-35, "
BODY SIDE TRIM" .
4. Remove the seat belt guide bolt.
5. Remove seat belt retractor anchor bolt and the seat belt assembly.
6. Remove the seat belt height adjuster assembly.
INSTALLATION
Installation is in the reverse order of removal.

Ensure that seat belt height adjuster is locked in the lowest position during installation.
SECOND ROW SEAT BELT BUCKLE
Removal
1. Remove the rear bucket seat.
2. Remove the screw and seat cushion inner finisher. Refer to SE-
98, "Second Row Center"
3. Remove the anchor bolt and buckle.
4. Remove the rear bench seat. Refer to SE-98, "
Second Row Outboard" .
5. Remove the seat cushion finisher.
6. Remove the anchor bolt and buckle.
Installation
Installation is in the reverse order of removal.
SECOND ROW SEAT BELT RETRACTOR - BENCH SEAT
Removal
1. Remove seat belt anchor.
2. Remove seat belt bezel.
3. Remove seat back upholstery and foam. Refer to SE-99, "
Disassembly and Assembly" .
4. Remove seat belt retractor cover.
5. Remove bolt and remove seat belt retractor and seat belt assembly.
Installation
Installation is in the reverse order of removal.
WHIA0347E

SB-8
SEAT BELTS
Revision: November 20092006 QX56
Removal and Installation of Third Row Seat BeltEHS001N2
Third Row Outboard
REMOVAL
1. Remove the D-ring anchor bolt cover and D-ring anchor bolt.
2. Remove the lower anchor bolt cover and lower anchor bolt.
3. Remove the upper and lower luggage side finishers. Refer to EI-40, "
LUGGAGE FLOOR TRIM" .
4. Remove the seat belt retractor anchor bolt and retractor and belt assembly.
5. Remove bolt from seat belt anchor base and remove seat belt buckles.
WHIA0283E
1. D-ring mounting bracket 2. Seat belt retractor and belt assem-
bly 3. Retractor mounting bracket
4. Seat belt lower anchor 5. Lower anchor bolt cover 6. Seat belt buckles
7. D-ring anchor bolt cover 8. D-ring anchor

SEAT BELTSSB-9
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SB
Revision: November 2009 2006 QX56
INSTALLATION
Installation is in the reverse order of removal.

Make sure seat belt height adjuster is locked in the lowest position during installation.

Seat belt anchor base should be flat to the floor during installation and not on the anti-rotation bead.
Third Row Center
REMOVAL
1. Remove the rear roof finisher. Refer to EI-40, "LUGGAGE FLOOR TRIM" .
2. Lower the rear portion of the headliner.
3. Remove the seat belt retractor anchor bolts and retractor and belt assembly.
INSTALLATION
Installation is in the reverse order of removal.
THIRD ROW SEAT BELT BUCKLE
Removal
1. Place seatback RH/LH in the folded position.
2. Remove luggage floor board assembly and storage box. Refer to EI-40, "
LUGGAGE FLOOR TRIM" .
3. Remove seat belt buckle bolt (2) from rear seat hinge (1).

⇐ : Vehicle front
WHIA0284E
Seat belt buckle bolt : 49 N·m (5.0 kg-m, 36 ft-lb)
LHIA0107E

SB-10
SEAT BELTS
Revision: November 20092006 QX56
4. Remove push pin (2) and release elastic ban (3) from seat
frame (1). Repeat for opposite seat.

⇐: Vehicle front
5. Partially lift seatback upright, then remove seat belt buckle (2) from between hinge cover (1) and seat cushion side facing (3).
Repeat for LH seat.

⇐: Vehicle front
Installation
Installation is in the reverse order of removal.

Raise and lock both seats in the full upright position to check for abnormal noises or binding.
LHIA0105E
LHIA0106E

SEAT BELTSSB-11
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SB
Revision: November 2009 2006 QX56
Seat Belt InspectionEHS00167
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 col-
lision 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 accident. Seat belt assemblies not in use during a colli-
sion should also be replaced if either damage or improper 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 retractor and 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 retractor and belt assembly.

Anchor bolts are deformed or worn out.

The 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.
PRELIMINARY CHECKS
1. Check the seat belt warning lamp/chime for proper operation as follows:
a. Switch ignition ON. The seat belt warning lamp should illuminate. Also, the seat belt warning chime should
sound for about seven seconds.
b. Fasten drivers seat belt. The seat belt warning lamp should go out and the chime (if sounding) should stop.
2. If the air bag warning lamp is blinking, conduct self-diagnosis using CONSULT-II, and air bag warning lamp. Refer to SRS-20, "
SRS Operation Check" .
3. Check that the seat belt retractor and belt assembly, seat belt anchor and buckle bolts are securely attached.
4. Check the shoulder seat belt guide and shoulder belt height adjuster for front seats. Ensure guide swivels freely and that belt lays flat and does not bind in guide. Ensure height adjuster operates properly and
holds securely.
5. Check retractor operation:
a. Fully extend the seat belt webbing and check for twists, tears or other damage.
b. Allow the seat belt to retract. Ensure that belt returns 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, because dirt built
up in the loops of the upper anchors can cause the seat belts to retract slowly.
c. Fasten the seat belt. Check the seat belt returns smoothly and completely to the retractor. If the belt 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. Use a clip or other device to hold the seat belt at the center pillar belt opening.
3. Pass a thin wire through the through-anchor belt opening. Hold both ends of the wire and pull taut while moving it up and down several times along the belt opening surface to remove dirt.
4. Any dirt that cannot be removed with the wire can be removed by cleaning the opening with a clean cloth.
5. Apply tape at the point where the belt contacts the through-anchor belt opening. NOTE:
Apply the tape so that there is no looseness or wrinkling.
6. Remove the clip holding the seat belt and check that the belt returns smoothly.
7. Repeat steps above as necessary to check the other seat belts.