Occupant Classification System (OCS)

WARNING: This page is about a different car, the 2009 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

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 classification system sensor (located under the passenger seat cushion assembly) and belt tension sensor (part of the passenger 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 front passenger air bag module in the event of a collision. Depending on the signals received, the air bag diagnosis sensor unit can disable the front passenger air bag module 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

PASSENGER AIR BAG STATUS CONDITIONS CHART

Front Passenger Seat (Condition)

PASS AIR BAG OFF Indicator (Status)

Passenger Air Bag Status (Readiness)

CONSULT-III Display

Seat occupied

OFF

Active (enabled)

Seat occupied ⁽¹⁾

Deactivated (disabled)

OFF

Seat empty

OFF

Deactivated (disabled)

OFF

⁽¹⁾	Passenger does not meet Occupant Classification System specifications for passenger air bag activation.

Fig 1: Identifying Occupant Classification System

Courtesy of NISSAN MOTOR CO., U.S.A.