2009 INFINITI QX56 sensor

SN-46
< PRECAUTION >
PRECAUTION
PRECAUTION
PRECAUTION
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005855116
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:0000000005855117
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.
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REMOVAL AND INSTALLATION
SONAR SENSOR
Removal and InstallationINFOID:0000000003776762
FRONT SONAR SENSOR
Removal
1. Remove the front fascia assembly. Refer to EXT-13, "Removal and Installation".
2. Remove the front sonar sensor (1) from the front fascia assem-
bly.
3. Disconnect the front s onar sensor connector.
4. Remove the front sonar sensor retainer from the front fascia assembly.
Installation
Installation is in the reverse order of removal.
REAR SONAR SENSOR
Removal
1. Remove the rear fascia assembly. Refer to EXT-15, "Removal and Installation".
2. Remove the rear sonar sensor (1) from the rear fascia assem- bly.
3. Disconnect the rear s onar sensor connector.
4. Remove the rear sonar sensor retainer from the rear fascia assembly.
Installation
Installation is in the reverse order of removal.
AWNIA1410ZZ
AWNIA1411ZZ
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RESTRAINTS
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CONTENTS
SRS AIRBAG
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 SRS "AIR BAG" and "SEAT BELT
PRE-TENSIONER" Service ......................................
3
Occupant Classification System Precaution .............3
PREPARATION ............................................4
PREPARATION .............................................. .....4
Special Service Tool ........................................... ......4
ON-VEHICLE REPAIR ..................................5
DRIVER AIR BAG MODULE .......................... .....5
Removal and Installation ...........................................5
SPIRAL CABLE ............................................. .....7
Removal and Installation ...........................................7
FRONT PASSENGER AIR BAG MODULE ......10
Removal and Installation ..................................... ....10
SIDE CURTAIN AIR BAG MODULE ................13
Removal and Installation .........................................13
CRASH ZONE SENSOR ...................................14
Removal and Installation ..................................... ....14
SIDE AIR BAG (SATELLITE) SENSOR ...........15
Removal and Installation .........................................15
FRONT SEAT BELT PRE-TENSIONER ...........16
Removal and Installation .........................................16
DIAGNOSIS SENSOR UNIT .............................17
Removal and Installation .........................................17
OCCUPANT CLASSIFICATION SYSTEM
CONTROL UNIT ................................................
19
Removal and Installation .........................................19
COLLISION DIAGNOSIS ..................................20
For Frontal Collision ................................................20
For Side and Rollover Collision ...............................22
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SR-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005867708
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:0000000005867709
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.
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PRECAUTIONSSR-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 SRS "AIR BAG" and "SEAT BELT PRE-TENSIONER" Service
INFOID:0000000003775154
• 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 terminals and wait at least 3 min- utes.
For approximately 3 minutes after the terminals are remov ed, it is still possible for the air bags and seat belt
pre-tensioners to deploy. Therefore, do not work on any SRS 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:0000000003775155
Replace control unit and passenger front seat cushion as an assembly.
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SR-8
< ON-VEHICLE REPAIR >
SPIRAL CABLE
5. While pressing tabs, pull lighting and turn signal switch towarddriver door and disconnect from base.
6. Remove the screws, release the clip, and remove the spiral cable.
CAUTION:
• Do not disassemble spiral cable.
• Do not apply lubricant to the spiral cable.
7. Remove the spiral cable connectors. CAUTION:
With the steering linkage di sconnected, the spiral cable
may snap by turning the steer ing wheel beyond the limited
number of turns. The spiral cable can be turned counter-
clockwise about 2.5 turns fr om the neutral position.
8. Remove the steering angle sensor. Refer to BRC-118, "
Removal
and Installation".
INSTALLATION
Installation is in the reverse order of removal.
• Align spiral cable correctly when installing steering wheel. Make
sure that the spiral cable is in the neutral position. The neutral
position is detected by turning left 2.5 revolutions from the right
end position and ending with the knob at the top.
• If equipped with VDC, refer to BRC-8, "
ADJUSTMENT OF STEER-
ING ANGLE SENSOR NEUTRAL POSITION : Special Repair
Requirement" for steering angle sensor adjustment.
• After the work is completed, perform self-diagnosis to make sure no malfunction is detected. Refer to SRC-13, "
SRS Operation
Check".
CAUTION:
LHIA0035E
LHIA0036E
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SR-14
< ON-VEHICLE REPAIR >
CRASH ZONE SENSOR
CRASH ZONE SENSOR
Removal and InstallationINFOID:0000000003775161
REMOVAL
CAUTION:
• Before servicing the SRS, turn the ignition switch off, disconnect both battery cables and wait at
least 3 minutes.
• Replace crash zone sensor if it has been dropped or sustained an impact.
• Do not disassemble crash zone sensor.
1. Disconnect the negative and positive battery cables, then wait at least 3 minutes.
2. Disconnect the crash zone sensor harness connector.
3. Remove crash zone sensor nuts.
INSTALLATION
Installation is in the reverse order of removal.
• After the work is complete, perform self-diagnosis to check that no malfunction is detected. Refer to SRC-13,
"SRS Operation Check".
LHIA0056E
Revision: December 20092009 QX56

SIDE AIR BAG (SATELLITE) SENSORSR-15
< ON-VEHICLE REPAIR >
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SIDE AIR BAG (S ATELLITE) SENSOR
Removal and InstallationINFOID:0000000003775162
REMOVAL
CAUTION:
• Before servicing the SRS, turn the ignition switch off, disconnect both battery cables and wait at
least 3 minutes.
• Do not use old nuts after removal; replace with new nuts.
• Check side air bag (satellite) sensor to make sure it is free of deformities, dents, cracks or rust. If it
shows any visible signs of da mage, replace it with new one.
• Do not disassemble side air bag (satellite) sensor.
• Replace side air bag (satellite ) sensor if it has been dropped or sustained an impact.
1. Disconnect the negative and positive battery cable, then wait at least 3 minutes.
2. Remove seat belt retractor. Refer to SB-4, "
Removal and Installation of Front Seat Belt".
3. Remove side air bag (satellite) sensor nuts.
4. Disconnect the side air bag (satellite) sensor harness connector.
INSTALLATION
Installation is in the reverse order of removal.
• After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to SRC-
13, "SRS Operation Check".
LHIA0057E
Revision: December 20092009 QX56