2011 INFINITI QX56 BATTERY

SR-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000006113043
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:0000000006113044
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.
Revision: 2010 May2011 QX56

PRECAUTIONSSR-3
< PRECAUTION >
C
DE
F
G
I
J
K L
M A
B
SR
N
O P
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 Battery ServiceINFOID:0000000006113045
Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prev ent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.
Occupant Classification SystemINFOID:0000000006113047
 Replace occupant classification system control uni t and passenger front seat cushion as an assembly.
Refer to SE-105, "
Exploded View".
ServiceINFOID:0000000006113046
 Never use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
 Before servicing the SRS, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3
minutes.
For approximately 3 minutes after the battery negative termi nal is removed, it is still possible for the air bag
and seat belt pre-tensioner to deploy. Therefore, never work on any SRS connectors or wires until at least 3
minutes have elapsed.
 Diagnosis sensor unit must always be installed with their arrow marks “ ⇐” pointing towards the front of the
vehicle for proper operation. Also check diagnosis sensor unit for cracks, deformities, or rust before installa-
tion and replace as required.
 The spiral cable must be aligned in the neutral position since its rotations are limited. Never turn steering
wheel and 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 m odule standing with the stud bolt side facing downward.
 Perform self-diagnosis to check entire SRS fo r proper function after replacing any components.
 After air bag deploys, the front instrument panel assembly should be replaced if damaged.
 Always replace instrument panel pad following front passenger air bag deployment.
Revision: 2010 May2011 QX56

DRIVER AIR BAG MODULESR-11
< REMOVAL AND INSTALLATION >
C
DE
F
G
I
J
K L
M A
B
SR
N
O P
REMOVAL AND INSTALLATION
DRIVER AIR BAG MODULE
Exploded ViewINFOID:0000000006113051
Removal and InstallationINFOID:0000000006113052
WARNING:
 Before servicing, turn ignition switch OFF, disconnect battery ne gative terminal and wait 3 minutes
or more.
 Always work from the side of air bag module. Never work in front of it.
 Never use the air tools or el ectric tools for servicing.
REMOVAL
1. Remove the side lids (LH/RH).
2. Remove the driver air bag module mounting TORX bolts (LH/RH).
3. Pull out the driver air bag module.
1. Steering column upper cover 2. Steering column lower cover 3. Side lid LH
4. TORX bolt LH 5. Driver air bag module 6. Side lid RH
7. TORX bolt RH 8. Steering wheel 9. Spiral cable
10. Steering angle sensor 11. Steering column assembly 12. Combination switch
: Pawl
Refer to GI-4, "
Components" for symbols in the figure.
JMHIA1472GB
Revision: 2010 May2011 QX56

SR-14
< REMOVAL AND INSTALLATION >
SPIRAL CABLE
SPIRAL CABLE
Exploded ViewINFOID:0000000006113053
Removal and InstallationINFOID:0000000006113054
WARNING:
 Before servicing, turn ignition switch OFF, disconnect battery ne gative terminal and wait 3 minutes
or more.
 Never use the air tools or electric tools for servicing.
REMOVAL
1. Remove the driver air bag module. Refer to SR-11, "Removal and Installation".
2. Remove the steering wheel. Refer to ST-33, "
Removal and Installation".
3. Remove the steering column upper cover and steering column lower cover. Refer to IP-14, "
Removal and
Installation".
1. Steering column upper cover 2. Steering column lower cover 3. Side lid LH
4. TORX bolt LH 5. Driver air bag module 6. Side lid RH
7. TORX bolt RH 8. Steering wheel 9. Spiral cable
10. Steering angle sensor 11. Steering column assembly 12. Combination switch
: Pawl
Refer to GI-4, "
Components" for symbols in the figure.
JMHIA1472GB
Revision: 2010 May2011 QX56

FRONT PASSENGER AIR BAG MODULESR-17
< REMOVAL AND INSTALLATION >
C
DE
F
G
I
J
K L
M A
B
SR
N
O P
FRONT PASSENGER AIR BAG MODULE
Exploded ViewINFOID:0000000006113055
Removal and InstallationINFOID:0000000006113056
WARNING:
 Before servicing, turn ignition switch OFF, disconnect battery ne gative terminal and wait 3 minutes
or more.
 Always work from the side of air bag module. Never work in front of it.
 Never use the air tools or el ectric tools for servicing.
REMOVAL
1. Remove the instrument panel assembly. Refer to IP-14, "Removal and Installation".
2. Remove the front passenger air bag module fixing screws (A).
1. Instrument panel assembly 2. Steering member assembly 3. Front passenger air bag module
Refer to GI-4, "
Components" for symbols in the figure.
JMHIA1473GB
JMHIA1487ZZ
Revision: 2010 May2011 QX56

SIDE CURTAIN AIR BAG MODULESR-19
< REMOVAL AND INSTALLATION >
C
DE
F
G
I
J
K L
M A
B
SR
N
O P
SIDE CURTAIN AIR BAG MODULE
Exploded ViewINFOID:0000000006113059
Removal and InstallationINFOID:0000000006113060
WARNING:
 Before servicing, turn ignition switch OFF, disconnect battery ne gative terminal and wait 3 minutes
or more.
 Always work from the side of air bag module. Never work in front of it.
 Never use the air tools or el ectric tools for servicing.
REMOVAL
1. Remove the headlining assembly. Refer to INT-29, "Removal and Installation".
2. Remove the side curtain air bag module harness connector. CAUTION:
1. Side curtain air bag
*: Side curtain air bag RH side only
Refer to GI-4, "
Components" for symbols in the figure.
JMHIA1474GB
Revision: 2010 May2011 QX56

SR-22
< REMOVAL AND INSTALLATION >
CRASH ZONE SENSOR
CRASH ZONE SENSOR
Exploded ViewINFOID:0000000006216179
Removal and InstallationINFOID:0000000006216180
WARNING:
 Before servicing, turn ignition switch OFF, disconnect battery ne gative terminal and wait 3 minutes
or more.
 Never use the air tools or electric tools for servicing.
REMOVAL
1. Remove the front under cover. Refer to EXT-25, "Removal and Installation".
2. Disconnect the crash zone sensor harness connector.
3. Remove the crash zone sensor fixing nut, and then remove crash zone sensor.
CAUTION:
 Never impact the crash zone sensor.
 Replace the crash zone sensor if it has been dropped or sus-
tained an impact.
1. Crash zone sensor
Refer to GI-4, "
Components" for symbols in the figure.
JMHIA1583GB
JMHIA0009ZZ
Revision: 2010 May2011 QX56

SR-24
< REMOVAL AND INSTALLATION >
SIDE AIR BAG (SATELLITE) SENSOR
SIDE AIR BAG (SATELLITE) SENSOR
Exploded ViewINFOID:0000000006113063
Removal and InstallationINFOID:0000000006113064
WARNING:
 Before servicing, turn ignition switch OFF, disconnect battery ne gative terminal and wait 3 minutes
or more.
 Never use the air tools or electric tools for servicing.
REMOVAL
SIDE AIR BAG FRONT (SATELLITE) SENSOR LH
1. Remove the center pillar lower garnish LH. Refer to INT-22, "CENTER PILLAR LOWER GARNISH :
Removal and Installation".
2. Remove the side air bag front (satellite) sensor LH fixing nut.
3. Disconnect the side air bag front (satellite) sensor LH harness connector, and then remove side air bag
front (satellite) sensor LH.
SIDE AIR BAG FRONT (SATELLITE) SENSOR RH
1. Remove the center pillar lower garnish RH. Refer to INT-22, "CENTER PILLAR LOWER GARNISH :
Removal and Installation".
1. Side air bag rear (satellite) sensor 2. Bracket * 3. Side air bag front (satellite) sensor
: Vehicle front
*: Side air bag rear (satellite) sensor RH side only
Refer to GI-4, "
Components" for symbols in the figure.
JMHIA1477GB
Revision: 2010 May2011 QX56