Nissan Xterra. Manual - part 591

SRS AIR BAG SYSTEM

SRC-7

< SYSTEM DESCRIPTION >

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SRS Component Parts Location

INFOID:0000000009482973

Driver Air Bag Module

INFOID:0000000009482974

The driver air bag module is dual stage and located in the steering

wheel assembly.  It operates with the SRS system in a frontal colli-

sion exceeding a specified level.

1.

Side curtain air bag modules

2.

Front RH side air bag module

3.

Front RH seat belt pre-tensioner

4.

Belt tension sensor

5.

Seat belt buckle switch RH

6.

RH side air bag (satellite) sensor

7.

Occupant classification system sen-
sor

8.

Occupant classification system 
control unit

9.

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

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< SYSTEM DESCRIPTION >

SRS AIR BAG SYSTEM

Front Passenger Air Bag Module

INFOID:0000000009482975

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 Bag

INFOID:0000000009482976

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 Bag

INFOID:0000000009482977

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-tensioner with Load Limiter

INFOID:0000000009482978

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.

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SRS AIR BAG SYSTEM

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< SYSTEM DESCRIPTION >

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Direct-connect SRS Component Connectors

INFOID:0000000009482979

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

Always pull up to release locking tab prior to removing connector from SRS component.

Always push down to lock locking tab after installing connector to

SRS component. When locked, the locking tab is level with the con-

nector housing.

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SRC-10

< SYSTEM DESCRIPTION >

OCCUPANT CLASSIFICATION SYSTEM

OCCUPANT CLASSIFICATION SYSTEM

System Diagram

INFOID:0000000009482980

Occupant Classification System (OCS)

INFOID:0000000009482981

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 can be used to confirm the passenger air bag status (readiness).

Passenger Air Bag Status Conditions

NOTE:

ALHIA0205GB

Front Passenger Seat

(Condition)

PASS AIR BAG OFF Indicator

(Status)

Passenger Air Bag Status

(Readiness)

CONSULT Display

Seat occupied

OFF

Active (enabled)

ON

Seat occupied 

NOTE

ON

Deactivated (disabled)

OFF

Seat empty

OFF

Deactivated (disabled)

OFF