belt INFINITI QX56 2008 Factory Service Manual

SEAT BELTSSB-7
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Removal and Installation of Second Row Seat BeltINFOID:0000000001537288
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 INT-19, "
Removal and Installation".
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
1. Seat belt height adjuster 2. D-ring anchor bolt cover3. D-ring anchor
4. Seat belt retractor and belt assembly 5. Seat belt buckle 6. Seat belt retractor cover
7. Push pin 8. Seat belt retractor and belt assembly 9. Seat belt bezel
10. Seat belt buckle 11. Seat cushion finisher12. Seat belt lower anchor
WHIA0281E
Revision: March 2010 2008 QX56

SB-8
< ON-VEHICLE REPAIR >
SEAT BELTS
Installation is in the reverse order of removal.
• Make sure the 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-74, "
Disassembly and Assembly".
3. Remove the anchor bolt and buckle.
4. Remove the rear bench seat. Refer to SE-60, "
Exploded View".
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-74, "
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.
Revision: March 2010 2008 QX56

SEAT BELTSSB-9
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Removal and Installation of Third Row Seat BeltINFOID:0000000001537289
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 INT-19, "
Removal and Installation".
4. Remove the seat belt retractor anchor bolt and retractor and belt assembly.
INSTALLATION
Installation is in the reverse order of removal.
• Seat belt anchor base should be flat to the floor during installation and not on the anti-rotation bead.
WHIA0283E
1. D-ring mounting bracket 2. Seat belt retractor and belt assembly 3. Retractor mounting bracket
4. Seat belt lower anchor 5. Lower anchor bolt cover6. Seat belt buckles
7. D-ring anchor bolt cover 8. D-ring anchor
Revision: March 2010 2008 QX56

SB-10
< ON-VEHICLE REPAIR >
SEAT BELTS
Third Row Center
REMOVAL
1. Remove the rear roof finisher. Refer to INT-17, "Removal and Installation".
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 INT-19, "
Removal and Installation".
3. Remove seat belt buckle bolt (2) from rear seat hinge (1). •⇐ : Vehicle front
WHIA0284E
Seat belt buckle bolt : 48 N·m (4.9 kg-m, 35 ft-lb)
LHIA0107E
Revision: March 2010 2008 QX56

SEAT BELTSSB-11
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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.
Seat Belt InspectionINFOID:0000000001537290
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 u se 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 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 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 t he 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-III, and air bag warning
lamp. Refer to SRC-13, "
SRS Operation Check".
3. Check that the seat belt retractor and belt asse mbly, seat belt anchor and buckle bolts are securely
attached.
LHIA0105E
LHIA0106E
Revision: March 2010 2008 QX56

SB-12
< ON-VEHICLE REPAIR >
SEAT BELTS
4. Check the shoulder seat belt guide and shoulder belt height adjuster for\
front seats. Ensure guide swivelsfreely 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 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, because dirt built
up in the loops of the upper anchors can c ause 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 accumulati on 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 wir e 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.
SEAT BELT RETRACTOR ON-VEHICLE CHECK
Emergency Locking Retractors (ELR) and Automatic Locking Retractors (ALR)
NOTE:
All seat belt retractors are of the Emergency Locking Retractors (ELR) type. In an emergency (sudden stop)
the retractor will lock and prevent the belt from ext ending any further. All 3-point type seat belt retractors
except the driver's 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 belt is then retracted partiall y, the ALR mode automatically locks the seat belt in a
specific position so the belt cannot be extended any furt her. To cancel the ALR mode, allow the seat belt to
fully wind back into the retractor.
Check the seat belt retractors using the following test(s ) to determine if a seat belt retractor and belt assembly
is operating properly.
ELR Function Stationary Check
Grasp the shoulder belt and pull forward quickly. The re tractor should lock and prevent the belt from extending
further.
ALR Function Stationary Check
1. Pull out entire length of seat belt from retractor until a click is heard.
2. Retract the belt partially. A clicking noise should be hear d as the belt retracts indicating that the retractor is
in the Automatic Locking Retractor (ALR) mode.
3. Grasp the seat belt and try to pull out the retractor. The belt must lock and not extend any further. If neces-
sary replace the seat belt retractor and belt assembly.
4. Allow the entire length of the belt to re tract 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. DO NOT perform the following test on
wet or gravel roads or on public streets and highw ays. This could result in an accident and serious
personal injury. The driver and passenger must be prepared to brace themselves in the event the
retractor does not lock.
1. Fasten drivers seat belt. Buckle a passenger in to the seat for the belt that is to be tested.
Revision: March 2010 2008 QX56

SEAT BELTSSB-13
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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. The driver and passenger must be prepared to brace t hemselves in the event the retractor does not lock.
Apply brakes firmly and make a very hard stop.
During stop, seat belts should lock and not be extended. If the seat belt retractor and belt assembly does not
lock, perform the retractor off-vehicle check.
SEAT BELT RETRACTOR OFF-VEHICLE CHECK
1. Remove the seat belt retractor and belt assembly.
2. Slowly pull out belt while tilting the retractor assembly forward from the mounted position without twisting
the retractor assembly as shown in the illustration.
If retractor does not operate within specif ications, replace the retractor assembly.
15 degrees or less tilt : Belt can be pulled out.
35 degrees or more tilt : Belt locks and cannot be pulled out.
PHIA0257E
Revision: March 2010
2008 QX56

SCS-2
EXHAUST VALVE SOLENOID CIRCUIT ..........23
Description ........................................................... ...23
Component Function Check ...................................23
Diagnosis Procedure ..............................................23
CK SUSP WARNING INDICATOR CONTROL
CIRCUIT .............................................................
25
Description ........................................................... ...25
Component Function Check ...................................25
Diagnosis Procedure ..............................................25
ECU DIAGNOSIS ..................................... ...27
SUSPENSION CONTROL UNIT ........................27
Reference Value .................................................. ...27
Wiring Diagram .......................................................28
DTC Index ..............................................................33
SYMPTOM DIAGNOSIS .............................35
SUSPENSION CONTROL SYSTEM .............. ...35
Symptom Table ................................................... ...35
SUSPENSION CONTROL SYSTEM INOPER-
ATIVE .................................................................
36
Description ........................................................... ...36
Diagnosis Procedure ...............................................36
SUSPENSION CONTROL SYSTEM DOES
NOT RAISE ........................................................
37
Description ........................................................... ...37
Diagnosis Procedure ...............................................37
SUSPENSION CONTROL SYSTEM DOES
NOT LOWER .....................................................
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Description ........................................................... ...38
Diagnosis Procedure ...............................................38
PRECAUTION ............................................39
PRECAUTIONS .............................................. ...39
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .............................................................. ...
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Precaution for Rear Suspension .............................39
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PRECAUTIONSSCS-39
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000004900823
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 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 SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inoper ative, 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 unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent 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 Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric 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 minutes before performing any service.
Precaution for Rear SuspensionINFOID:0000000001732010
• When installing the rubber bushings, the final tightening must be done under unladen condition and with thetires on level ground. Oil will shorten the life of the rubber bushings, so wipe off any spilled oil immediately.
• Unladen condition means the fuel tank, engine coolant and lubricants are at the full specification. The spare tire, jack, hand tools, and mats are in their designated positions.
• After installing suspension components, check the wheel alignment.
• Caulking nuts are not reusable. Always use new caulking nuts for installation. New caulking nuts are pre-
oiled, do not apply any additional lubrication.
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SE-1
BODY INTERIOR
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CONTENTS
SEAT
BASIC INSPECTION ....... .............................3
DIAGNOSIS AND REPAIR WORKFLOW ..... .....3
Work Flow ........................................................... ......3
INSPECTION AND ADJUSTMENT .....................5
Preliminary Check ............................................... ......5
FUNCTION DIAGNOSIS ...............................6
THIRD ROW POWER FOLDING SEAT ......... .....6
System Description ............................................. ......6
Component Parts Location ........................................7
Component Description .............................................7
COMPONENT DIAGNOSIS ..........................8
POWER SEAT .....................................................8
Wiring Diagram — Passenger Side — ................ ......8
HEATED SEAT ...................................................12
Description ..............................................................12
Wiring Diagram .......................................................13
THIRD SEAT ......................................................18
Power Supply and Ground Circuit Check for Third
Row Power Folding Seat Control Unit ................. ....
18
Third Row Power Folding Seat Switch ....................19
Third Row Power Folding Seat Motor .....................19
ECU DIAGNOSIS .........................................21
THIRD ROW POWER FOLDING SEAT CON-
TROL UNIT .........................................................
21
Reference Value ................................................. ....21
Wiring Diagram .......................................................23
DTC Index ...............................................................28
Fail Safe ..................................................................29
SYMPTOM DIAGNOSIS ..............................30
THIRD ROW POWER FOLDING SEAT ......... ....30
Symptom Table ................................................... ....30
NONE OF THE THIRD ROW POWER FOLD-
ING SEATS WILL OPERATE WITH ANY
SWITCH. ............................................................
31
None of the Third Row Power Folding Seats Will
Operate With Any Third Row Power Folding Seat
Switch .................................................................. ....
31
ONLY ONE THIRD ROW POWER FOLDING
SEAT WILL OPERATE. ....................................
32
Only One Third Row Power Folding Seat Will Op-
erate .................................................................... ....
32
THIRD ROW POWER FOLDING SEAT WILL
OPERATE IN ONLY ONE DIRECTION. ...........
34
Third Row Power Folding Seat Will Operate in
Only One Direction .............................................. ....
34
THIRD ROW POWER FOLDING SEAT WILL
STOP SHORT OF IT’S FULLY UP OR DOWN
POSITION. .........................................................
35
Third Row Power Folding Seat Stops Short of its
Fully Up or Down Position .......................................
35
THIRD ROW POWER FOLDING SEAT
MAKES EXCESSIVE NOISE WHILE MOV-
ING. ...................................................................
36
Third Row Power Folding Seat Makes Excessive
Noise While Moving ............................................. ....
36
SQUEAK AND RATTLE TROUBLE DIAG-
NOSES ..............................................................
37
Work Flow ................................................................37
Generic Squeak and Rattle Troubleshooting ...........39
Diagnostic Worksheet ..............................................41
PRECAUTION ..............................................43
PRECAUTIONS .................................................43
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ....
43
Revision: March 2010 2008 QX56