2009 INFINITI QX56 instrument panel

SR-10
< ON-VEHICLE REPAIR >
FRONT PASSENGER AIR BAG MODULE
FRONT PASSENGER AIR BAG MODULE
Removal and InstallationINFOID:0000000003775159
The passenger air bag module originally installed in the vehicle uses direct-connect style harness connectors.
Service replacement passenger air bag modules use tab-locking style harness connectors. If the passenger
air bag module is replaced or if the direct-connect harness connectors are damaged, the vehicle wiring har-
ness must be modified to allow connection of the service replacement passenger air bag module. Follow the
wiring harness modification procedure within this section.
REMOVAL
CAUTION:
• Do not attempt to repair or replace damaged di rect-connect front passenger air bag module connec-
tors. If a direct-connect harness connector is damaged, the front passenger air bag must be
replaced and the wiri ng harness modified.
• Before servicing SRS, turn the ig nition switch off, disconnect both battery terminals and wait at least
three minutes.
• Always work from the side of or under front passenger air bag module.
1. Disconnect both the negative and positive battery terminals, then wait at least three minutes.
2. Remove the glove box. Refer to IP-17, "
Exploded View".
3. Remove two nuts (through glove box opening) retaining front passenger air bag module to instrument panel crossmember.
4. Disconnect the air bag module electrical connectors. • For removal/installation of the direct-connect SRS connectors, refer to SRC-9, "
Direct-connect SRS
Component Connectors".
5. Remove the instrument panel assembly from the vehicle. Refer to IP-13, "
Removal and Installation".
6. Remove front passenger air bag module nuts and remove air bag module from the instrument panel assembly.
CAUTION:
• When servicing the SRS, do not work from directly in front of
air bag module.
• Always place front passenger air bag module with caution label side facing upward.
• Do not insert any foreign object s (screwdriver, etc.) into air
bag module or harness connectors.
• Do not disassemble air bag module.
• Do not use old nuts after removal; replace with new nuts.
• Do not expose the front passenger air bag module to tempera- tures exceeding 90 °C (194 °F).
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FRONT PASSENGER AIR BAG MODULESR-11
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• Replace the air bag module if it has been dropped or sus-
tained an impact.
• Do not allow oil, grease or water to come in contact with the
air bag module.
• For removal/installation of the direct-connect SRS connec- tors, refer to SRC-9, "
Direct-connect SRS Component Con-
nectors".
INSTALLATION
Original Passenger Air Bag Module
Installation is in the reverse order of removal.
• For removal and installation of the direct-connect SRS connectors, refer to SRC-9, "
Direct-connect SRS
Component Connectors".
CAUTION:
• Always work from the side of or under front passenger air bag module.
• After the work is completed, perform self-diagnosi s to check that no malfunction is detected. Refer
to SRC-13, "
SRS Operation Check".
Service Replacement Passenger Air Bag Module
1. Install the front passenger air bag module to the instrument
panel pad assembly.
2. Install the instrument panel assembly. Refer to IP-13, "
Removal and Installation".
3. Connect the front passenger air bag module harness connector to yellow 4-pin service replacement air bag connector and fasten connector to mounting bracket.
CAUTION:
• Always work from the side of or under front passenger air bag module.
• After the work is completed, perform self-diagnosi s to check that no malfunction is detected. Refer
to SRC-13, "
SRS Operation Check".
WIRING HARNESS MODIFICATION
The passenger air bag module originally installed in t he vehicle uses direct-connect style harness connectors.
Service replacement passenger air bag modules use t ab-locking style harness connectors. If the passenger
air bag module is replaced or if the direct-connect harness connectors are damaged, the vehicle wiring har-
ness must be modified to allow connection of t he service replacement passenger air bag module.
NOTE:
The wiring harness modification is to be performed only if the vehicle is equipped with the original passenger
air bag which uses direct-connect harness connectors. If the passenger air bag is to be replaced in a vehicle
that has already had the service replacement passenger air bag installed, the wiring harness modification is
not required.
CAUTION:
• Do not attempt to repair or replace damaged dir ect-connect front passenger air bag module connec-
tors. If a direct-connect harness connector is damaged, the front passenger air bag must be
replaced and the wiri ng harness modified.
• Before servicing SRS, turn the igni tion switch off, disconnect both battery cables and wait at least 3
minutes.
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COLLISION DIAGNOSISSR-21
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FOR FRONTAL COLLISION: When SRS is not activated in a collision
CAUTION:
Due to varying models and option levels, not all parts listed in the chart below apply to all vehicles.
WORK PROCEDURE
1. Before performing any of the following steps, ensur e that all vehicle body and structural repairs have been
completed.
2. Check the SRS components using the table below: Replace any SRS components showing visible signs of damage. (dents, cracks and deformation, etc.)
3. Perform self-diagnosis using CONSULT-III or air bag warning lamp. Refer to SRC-15, "
Self-Diagnosis
Function (Without CONSULT-III)" for details.
Ensure entire SRS operates properly.
4. After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to
SRC-13, "
SRS Operation Check".
SRS INSPECTION (FOR FRONTAL COLLISION)
Harness and connectors 1. Check connectors for poor connection, damage, and terminals for deformities.
2. Check harness for binding, chafing, cuts, or deformities.
3. If no damage is found, reinstall the harness and connectors.
4. If damaged—REPLACE the damaged harness. Do not attempt to repair, splice or modify any SRS harness.
Instrument panel assembly If the passenger front air bag has deployed: REPLACE the instrument panel assembly. (integrated type)
Part
Inspection
Part Inspection
Driver air bag module If the driver air bag has NOT been activated:
1. Remove driver air bag module. Check harness cover and connectors for damage, terminals for deformities, and harness for binding.
2. Install driver air bag module into the steering wheel to check fit and alignment with the wheel.
3. If no damage is found, reinstall with new fasteners.
4. If damaged—REPLACE. Install driver air bag modules with new fasteners.
Front passenger air bag module
(if equipped) If the front passenger air bag has NOT been activated:
1. Remove front passenger air bag module. Check harness cover and connectors for damage,
terminals for deformities, and harness for binding.
2. Install front passenger air bag module into the instrument panel to check fit with the instrument panel.
3. If no damage is found, reinstall with new fasteners.
4. If damaged—REPLACE. Install front passenger air bag modules with new fasteners.
Crash zone sensor If the front air bags or seat belt pre-tensioners have NOT been activated:
1. Remove the crash zone sensor. Check harness connectors for damage, terminals for defor- mities, and harness for binding.
2. Check for visible signs of damage (dents, cracks, deformation) of the crash zone sensor and bracket.
3. Install the crash zone sensor to check fit.
4. If no damage is found, reinstall with new fasteners.
5. If damaged—REPLACE the crash zone sensor and bracket with new fasteners.
Seat belt pre-tensioner assem-
blies
(All applicable locations: buckle,
retractor, lap outer) If the pre-tensioners have NOT been activated:
1. Remove seat belt pre-tensioners.
Check harness cover and connectors for damage, terminals for deformities, and harness for
binding.
2. Check belts for damage and anchors for loose mounting.
3. Check retractor for smooth operation.
4. Check seat belt adjuster for damage.
5. Check for deformities of the center pillar inner.
6. If the center pillar inner has no damage, REPLACE the seat belt pre-tensioner assembly.
7. If no damage is found, reinstall seat belt pre-tensioner assembly.
8. If damaged—REPLACE. Install the seat belt pre-tensioners with new fasteners.
Revision: December 20092009 QX56

SR-22
< ON-VEHICLE REPAIR >
COLLISION DIAGNOSIS
For Side and Ro llover Collision
INFOID:0000000005867711
FOR SIDE AND ROLLOVER COLLISION: Wh en SRS is activated in a collision
CAUTION:
Due to varying models and option levels, not all part s listed in the chart below apply to all vehicles.
WORK PROCEDURE
1. Before performing any of the following steps, ensure that all vehicle body and structural repairs have been
completed.
2. Replace the following components:
- Front seat back assembly (on the side on which side air bag is activated).
- Door finisher (on the side on which door-mounted curtain air bag is activated).
- Pop-up roll bar assemblies and pop-up roll bar covers.
- Side air bag (satellite) sensor LH/RH (on the side on which side air bag is activated).
- Diagnosis sensor unit.
- Seat belt pre-tensioner assemblies.
3. Check the SRS components and the related parts using the following table. Replace any SRS components and the related parts showing visible signs of damage (dents, cracks,
deformation, etc.).
4. Perform self-diagnosis using CONSULT-III and “AIR BAG” warning lamp. Refer to SRC-13, "
SRS Opera-
tion Check" for details. Make sure entire SRS operates properly.
5. After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to SRC-15, "
Self-Diagnosis Function (Without CONSULT-III)".
SRS INSPECTION (FOR SIDE AND ROLLOVER COLLISION)
Diagnosis sensor unit If none of the SRS components have been activated:
1. Check case for dents, cracks or deformities.
2. Check connectors for damage, and terminals for deformities.
3. If no damage is found, reinstall with new fasteners.
4. If damaged—REPLACE. Install diagnosis sensor unit with new fasteners.
Steering wheel 1. Visually check steering wheel for deformities.
2. Check harness (built into steering wheel) and connectors for damage, and terminals for defor- mities.
3. Install driver air bag module into the steering wheel to check fit and alignment with the wheel.
4. Check steering wheel for excessive free play.
5. If no damage is found, reinstall.
6. If damaged—REPLACE.
Spiral cable If the driver front air bag has not deployed:
1. Visually check spiral cable and combination switch for damage.
2. Check connectors and protective tape for damage.
3. Check steering wheel for noise, binding or heavy operation.
4. If no damage is found, reinstall.
5. If damaged—REPLACE.
Occupant classification system
(Passenger seat) 1. Remove passenger seat assembly.
2. Check control unit case for dents, cracks of deformities.
3. Check connectors and pressure sensor tube for damage, and terminals for deformities.
4. Check seat frame and cushion pan for dents or deformities.
5. If no damage is found, reinstall seat with new fasteners.
6. If damaged — REPLACE seat cushion assembly with new fasteners.
Harness and connectors 1. Check connectors for poor connection, damage, and terminals for deformities.
2. Check harness for binding, chafing, cuts, or deformities.
3. If no damage is found, reinstall the harness and connectors.
4. If damaged—REPLACE the damaged harness. Do not attempt to repair, splice or modify any
SRS harness.
Instrument panel assembly If the passenger front air bag has NOT deployed: 1. Visually check instrument panel for damage.
2. If no damage is found, reinstall the instrument panel assembly.
3. If damaged—REPLACE the instrument panel assembly.
Part
Inspection
Revision: December 20092009 QX56

SRC-8
< FUNCTION DIAGNOSIS >
SRS AIR BAG SYSTEM
Front Passenger Air Bag Module
INFOID:0000000003775174
The front passenger air bag module is located behind the instrument
panel assembly. It operates with the SRS system in a frontal colli-
sion exceeding a specified level. Refer to SRC-10, "
Occupant Clas-
sification System (OCS)" for more information.
Front Side Air BagINFOID:0000000003775175
Front side air bag modules are built into the front seatback assem-
blies. Vehicles with side air bags are equipped with labels as shown.
Side Curtain Air BagINFOID:0000000003775176
Side curtain air bag modules are located above the vehicle headlining.
Vehicles with side curtain air bags are equipped with labels as
shown.
Front Seat Belt Pre-te nsioner with Load LimiterINFOID:0000000003775177
The seat belt pre-tensioner system wi th load limiter is installed for
both the driver's seat and the front passenger's seat. It operates
simultaneously with the SRS air bag system in the event of a frontal
collision with an impact exceeding a specified level.
When the frontal collision with an im pact exceeding a specified level
occurs, seat belt slack resulting from clothing or other factors is
immediately taken up by the pre-tensioner. Vehicle passengers are
securely restrained.
When passengers in a vehicle are thrown forward in a collision and
the restraining force of the seat belt exceeds a specified level, the
load limiter permits the specified extension of the seat belt by the
twisting of the ELR shaft, and a relaxation of the chest-area seat belt
web tension while maintaining force.
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PRECAUTIONSSRC-93
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005867464
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 SRS "AIR BAG" and "SEAT BELT PRE-TENSIONER" Service
INFOID:0000000003775253
• Do not use electrical test equipment to check SRS ci rcuits unless instructed to in this Service Manual.
• Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 min- utes.
For approximately 3 minutes after the cables are remov ed, it is still possible for the air bag and seat belt pre-
tensioner to deploy. Therefore, do not work on any SR S connectors or wires until at least 3 minutes have
passed.
• The air bag diagnosis sensor unit must always be installed with the arrow mark “ ⇐” pointing toward the front
of the vehicle for proper operation. Also check air bag diagnosis sensor unit for cracks, deformities or rust
before installation and replace as required.
• The spiral cable must be aligned with the neutral position since its rotations are limited. Do not attempt to
turn steering wheel or column after removal of steering gear.
• Handle air bag module carefully. Always place driver and front passenger air bag modules with the pad side facing upward and seat mounted front side air bag module standing with the stud bolt side facing down.
• Conduct self-diagnosis to check entire SRS for proper function after replacing any components.
• After air bag inflates, the front instrument panel assembly should be replaced if damaged.
Occupant Classification System PrecautionINFOID:0000000003775254
Replace occupant classification system control uni t and passenger front seat cushion as an assembly.
Revision: December 20092009 QX56

TILT SYSTEMST-19
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TILT SYSTEM
Removal and InstallationINFOID:0000000004187594
TILT MOTOR AND TILT SENSOR
Removal
1. Remove the lower driver instrument panel. Refer to IP-12, "Exploded View".
2. Disconnect the sonar switch.
3. Disconnect adjustable pedal switch.
4. Remove steering column cover
5. Disconnect the tilt sensor electrical connector.
6. Remove knee protector.
7. Remove the two tilt sensor screws and the tilt sensor.
8. Disconnect the tilt motor electrical connector.
9. Remove the tilt motor bolt and the tilt motor.
Installation
Installation is in reverse order of removal.
NOTE:
Make sure the tab in the tilt sensor is engaged in the bracket on the tilt motor.
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1. Tilt sensor 2. Tilt motor
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STR-8
< FUNCTION DIAGNOSIS >
STARTING SYSTEM
FUNCTION DIAGNOSIS
STARTING SYSTEM
System DiagramINFOID:0000000003771788
System DescriptionINFOID:0000000003771789
The starter motor plunger closes and provides a closed circuit between the battery and the starter motor. The
starter motor is grounded to the cylinder block. With power and ground supplied, the starter motor operates.
Component Parts LocationINFOID:0000000003771790
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1. A/T assembly F9 (with built in TCM
F502) 2. IPDM E/R E119, E120, E122, E124 3. BCM M18 (view with instrument panel
lower LH panel removed)
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Revision: December 20092009 QX56