2007 INFINITI QX56 belt

THIRD SEAT
SE-95
< SERVICE INFORMATION >
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THIRD SEAT
LH Side SeatINFOID:0000000003533214
REMOVAL
1. Remove the storage bin. Refer to EI-39 .
2. Remove the lower base trim covers.
3. Remove front link nuts and the LH hinge front bolt.
4. Remove push pin (2) and release elastic ban (3) from seat
frame (1).
•⇐: Vehicle front
5. Partially lift seatback upright, then remove seat belt buckle (2)
from between hinge cover (1) and seat cushion side facing (3).
•⇐: Vehicle front
6. Retract the seat into the cargo floor position.
7. Remove the (A) seat hinge rear bolt and (B) seat belt buckle bolt
from the seat assembly.
8. Remove the seat assembly.
INSTALLATION
Installation is in the reverse order of removal.Front link nuts : 45 N·m (4.6 Kg-m, 33 ft-lb)
LH hinge front bolt : 45 N·m (4.6 Kg-m, 33 ft-lb)
LIIA2324E
LIIA2370E
LIIA2371E
Seat hinge rear bolt : 45 N·m (4.6 Kg-m, 33 ft-lb)
Seat belt buckle bolt : 50 N·m (5.1 Kg-m, 37 ft-lb)
LIIA2325E

THIRD SEAT
SE-97
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RH Side SeatINFOID:0000000003533215
REMOVAL
1. Remove the storage bin. Refer to EI-39 .
2. Remove the lower base trim covers.
3. Remove (A) front link nuts and (B) RH hinge front bolt.
4. Remove push pin (2) and release elastic ban (3) from seat
frame (1).
•⇐: Vehicle front
5. Partially lift seatback upright, then remove seat belt buckle (2)
from between hinge cover (1) and seat cushion side facing (3).
•⇐: Vehicle front
6. Retract the seat into the cargo floor position.
7. Remove the rear bolts from the seat assembly.
8. Remove the seat assembly.
INSTALLATION
Installation is in the reverse order of removal.
DISASSEMBLY AND ASSEMBLY
16. Seatback board 17. Seatback pad 18. Headrest holder, locking
19. Headrest holder, free 20. Headrest
Front link nuts : 45 N·m (4.6 Kg-m, 33 ft-lb)
RH hinge front bolt : 45 N·m (4.6 Kg-m, 33 ft-lb)
LIIA2326E
LHIA0105E
Seat hinge rear bolt : 45 N·m (4.6 Kg-m, 33 ft-lb)
LHIA0106E
LIIA2327E

SRS-1
RESTRAINTS
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SECTION SRS
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SRS
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CONTENTS
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SERVICE INFORMATION ............................2
PRECAUTIONS ...................................................2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
2
Precaution for SRS "AIR BAG" and "SEAT BELT
PRE-TENSIONER" Service ......................................
2
Occupant Classification System Precaution .............2
PREPARATION ...................................................3
Special Service Tool .................................................3
SUPPLEMENTAL RESTRAINT SYSTEM
(SRS) ...................................................................
4
SRS Configuration ....................................................4
Driver Air Bag Module ...............................................5
Front Passenger Air Bag Module ..............................5
Front Side Air Bag .....................................................5
Side Curtain Air Bag ..................................................5
Front Seat Belt Pre-tensioner with Load Limiter .......6
Occupant Classification System (OCS) ....................6
Direct-connect SRS Component Connectors ............6
TROUBLE DIAGNOSIS ......................................8
Trouble Diagnosis Introduction .................................8
SRS Component Parts Location .............................10
Schematic ...............................................................11
Wiring Diagram - SRS - ...........................................12
CONSULT-II Function (AIR BAG) ...........................17
CONSULT-II Function .............................................18
Self-Diagnosis Function (Without CONSULT-II) .....19
SRS Operation Check .............................................20
Trouble Diagnosis with CONSULT-II ......................21
Trouble Diagnosis without CONSULT-II .................28
Trouble Diagnosis: "AIR BAG" Warning Lamp
Does Not Turn Off ...................................................
32
Trouble Diagnosis: "AIR BAG" Warning Lamp
Does Not Turn On ...................................................
33
DRIVER AIR BAG MODULE ............................35
Removal and Installation .........................................35
SPIRAL CABLE ................................................37
Removal and Installation .........................................37
FRONT PASSENGER AIR BAG MODULE ......39
Removal and Installation .........................................39
SIDE CURTAIN AIR BAG MODULE ................42
Removal and Installation .........................................42
CRASH ZONE SENSOR ...................................44
Removal and Installation .........................................44
SIDE AIR BAG (SATELLITE) SENSOR ...........45
Removal and Installation .........................................45
FRONT SEAT BELT PRE-TENSIONER ...........46
Removal and Installation .........................................46
DIAGNOSIS SENSOR UNIT .............................47
Removal and Installation .........................................47
OCCUPANT CLASSIFICATION SYSTEM
CONTROL UNIT ................................................
48
Removal and Installation .........................................48
COLLISION DIAGNOSIS ..................................49
For Frontal Collision ................................................49
For Side and Rollover Collision ...............................50

SRS-2
< SERVICE INFORMATION >
PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000003532849
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 performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
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 har-
ness connectors.
Precaution for SRS "AIR BAG" and "SEAT BELT PRE-TENSIONER" Service
INFOID:0000000003532850
• Do not use electrical test equipment to check SRS circuits 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 removed, 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 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:0000000003532851
Replace control unit and passenger front seat cushion as an assembly.

SRS-4
< SERVICE INFORMATION >
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SRS ConfigurationINFOID:0000000003532853
The air bag deploys if the air bag diagnosis sensor unit is activated while the ignition switch is in the ON or
START position.
The collision modes for which supplemental restraint systems are activated are different among the SRS sys-
tems. For example, the driver air bag module, front passenger air bag module, front seat belt pre-tensioners
and seat belt buckle pre-tensioner assemblies are activated in a frontal collision but not in a side collision.
SRS configurations for some collision modes are as follows:
WHIA0215E
SRS configuration Frontal collision Left side collisionRight side colli-
sionRollover
Driver air bag module x — — —
Front passenger air bag module x — — —
Front LH seat belt pre-tensioner x — — x
Front LH seat belt buckle pre-tensioner assembly x — — x
Front RH seat belt pre-tensioner x — — x
Front RH seat belt buckle pre-tensioner assembly x — — x
Front LH side air bag module — x — —
Front RH side air bag module — — x —
LH side curtain air bag module — x — x
RH side curtain air bag module — — x x

SRS-6
< SERVICE INFORMATION >
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Front Seat Belt Pre-tensioner with Load Limiter
INFOID:0000000003532858
The seat belt pre-tensioner system with 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 impact 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.
Occupant Classification System (OCS)INFOID:0000000003532859
The occupant classification system (OCS) identifies different size occupants, out of position occupants, and
detects if child seat is present in the front passenger seat. The OCS receives inputs from the occupant classi-
fication sensor (located inside the passenger seat cushion assembly) and belt tension sensor (part of the pas-
senger front seat belt assembly and located at the belt anchor location). Depending on classification of the
passenger, the OCS sends a signal to the air bag diagnosis sensor unit. The air bag diagnosis sensor unit
uses this signal and the seat belt buckle switch RH signal to determine deployment or non deployment of the
passenger front air bag in the event of a collision. Depending on the signals received, the air bag diagnosis
sensor unit can disable the passenger front air bag completely.
NOTE:
In case of customer concern, CONSULT-II can be used to confirm the passenger air bag status (readiness).
Passenger Air Bag Status Conditions
NOTE:
Passenger does not meet Occupant Classification System specifications for passenger air bag activation.
Direct-connect SRS Component ConnectorsINFOID:0000000003532860
The following SRS components use direct-connect style harness connectors.
• Driver air bag module
• Front passenger air bag module
• LH side front curtain air bag module
• LH side rear curtain air bag module
• RH side front curtain air bag module
• RH side rear curtain air bag module
• Front LH seat belt pre-tensioner
• Front RH seat belt pre-tensioner
• Seat belt buckle pre-tensioner assembly LH
WHIA0324E
Front Passenger Seat
(Condition)PASS AIR BAG OFF Indicator
(Status)Passenger Air Bag Status
(Readiness)CONSULT-II Display
Seat occupied OFF Active (enabled) ON
Seat occupied
NOTEON Deactivated (disabled) OFF
Seat empty OFF Deactivated (disabled) OFF
WHIA0187E

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SRS-7
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SRS
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• Seat belt buckle pre-tensioner assembly RH
Always pull up to release black locking tab prior to removing connector from SRS component.
Always push down to lock black locking tab after installing connector
to SRS component. When locked, the black locking tab is level with
the connector housing.
WHIA0103E

SRS-10
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
SRS Component Parts Location
INFOID:0000000003532862
1. Side curtain air bag modules 2. Front RH side air bag module 3. Belt tension sensor
4. RH side air bag (satellite) sensor 5. Front RH seat belt pre-tension-
er6. Seat belt buckle pre-tensioner assembly
RH
7. Occupant classification system sen-
sor8. Occupant classification system
control unit9. Front passenger air bag off indicator
10. Front passenger air bag module 11. Crash zone sensor 12. Air bag warning lamp
13. Spiral cable 14. Driver air bag module 15. LH side air bag (satellite) sensor
16. Front LH seat belt pre-tensioner 17. Air bag diagnosis sensor unit 18. Front LH side air bag module
WHIA0216E