Nissan Frontier D40. Manual - part 989

SRC-8

< FUNCTION DIAGNOSIS >

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

SRC-9

< FUNCTION DIAGNOSIS >

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Direct-connect SRS Component Connectors

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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

< FUNCTION DIAGNOSIS >

OCCUPANT CLASSIFICATION SYSTEM

OCCUPANT CLASSIFICATION SYSTEM

System Diagram

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Occupant Classification System (OCS)

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

Passenger Air Bag Status Conditions

NOTE:

ALHIA0042GB

Front Passenger Seat

(Condition)

PASS AIR BAG OFF Indicator

(Status)

Passenger Air Bag Status

(Readiness)

CONSULT-III Display

Seat occupied

OFF

Active (enabled)

ON

Seat occupied 

NOTE

ON

Deactivated (disabled)

OFF

Seat empty

OFF

Deactivated (disabled)

OFF

OCCUPANT CLASSIFICATION SYSTEM

SRC-11

< FUNCTION DIAGNOSIS >

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Passenger does not meet Occupant Classification System specifications for passenger air bag activation.

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