Nissan Altima L32. Manual - part 1369

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< FUNCTION DIAGNOSIS >

SRS AIR BAG SYSTEM

FUNCTION DIAGNOSIS

SRS AIR BAG SYSTEM

SRS Configuration

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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 and front seat belt pre-tension-

ers are activated in a frontal collision but not in a side collision.

SRS configurations for some collision modes are as follows:

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SRS configuration

Frontal collision

Left side collision

Right side collision

Driver air bag module

×

—

—

Front passenger air bag module

×

—

—

Front LH seat belt pre-tensioner

×

—

—

Front RH seat belt pre-tensioner

×

—

—

Front LH side air bag module (if equipped)

—

×

—

Front RH side air bag module (if equipped)

—

—

×

LH side curtain air bag module (if equipped)

—

×

—

RH side curtain air bag module (if equipped)

—

—

×

SRS AIR BAG SYSTEM

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SRS Component Parts Location

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Driver Air Bag Module

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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.

Crash zone sensor

2.

Spiral cable

3.

Front passenger air bag off indicator
(if equipped)

4.

Front LH seatbelt pre-tensioner
LH side air bag (satellite) sensor
(if equipped)

5.

Air bag diagnosis sensor unit

6.

Front LH side air bag module
(if equipped)

7.

Seat belt buckle switch (LH)
Seat belt buckle switch (RH)

8.

Occupant classification system 
control unit and sensor mat
(if equipped)

9.

Front RH seatbelt pre-tensioner
RH side air bag (satellite) sensor
(if equipped)

10. Front RH side air bag module

(if equipped)

11. RH side curtain air bag module

(if equipped)

12. LH side curtain air bag module

(if equipped)

13. Front passenger air bag module

14. Driver air bag module

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SRS AIR BAG SYSTEM

Front Passenger Air Bag Module

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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

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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

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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

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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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Direct-connect SRS Component Connectors

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The following SRS components use direct-connect style harness connectors.

• Driver front air bag module

• Passenger front air bag module

• LH side curtain air bag module

• RH side 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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