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Things to know before starting your vehicle » Occupant restraint systems » Supplemental Restraint System (SRS)
Occupant Classification Module (OCM) and Sensor

The Occupant Classification Module (OCM) is located underneath the front passenger seat. The Sensor is located beneath the passenger seat cushion foam. Any weight on the seat will be sensed by the Sensor. The OCM uses input from the Sensor to determine the front passenger's most probable classification. The OCM communicates this information to the ORC. The ORC may reduce the inflation rate of the Passenger Advanced Front Air Bag deployment based on occupant classification. In order for the OCS to operate as designed, it is important for the front passenger to be seated properly and properly wearing the seat belt.

The OCS will NOT prevent deployment of the Passenger Advanced Front Air Bag. The OCS may reduce the inflation rate of the Passenger Advanced Front Air Bag if the OCS estimates that:

  • The front passenger seat is unoccupied or has very light objects on it; or
  • The front passenger seat is occupied by a small passenger, including a child; or
  • The front passenger seat is occupied by a rear-facing child restraint; or
  • The front passenger is not properly seated or his or her weight is taken off of the seat for a period of time.
Front Passenger Seat Occupant Status Front Passenger Air Bag Output
Rear-facing child restraint Reduced-power deployment
Child, including a child in a forward-facing child restraint or booster seat* Reduced-power deployment OR Fullpower deployment
Properly seated adult Full-power deployment OR reduced-power deployment
Unoccupied seat Reduced-power deployment

* It is possible for a child to be classified as an adult, allowing a full-power Passenger Advanced Front Air Bag deployment. Never allow children to ride in the front passenger seat and never install a child restraint system, including a rear-facing child restraint, in the front passenger seat.

WARNING!

  • Never place a rear-facing child restraint in front of an air bag. A deploying Passenger Advanced Front Air Bag can cause death or serious injury to a child 12 years or younger, including a child in a rearfacing child restraint.
  • Only use a rear-facing child restraint in a vehicle with a rear seat.
  • Children 12 years or younger should always ride buckled up in a rear seat.

The OCS determines the front passenger's most probable classification. The OCS estimates the seated weight on the front passenger seat and where that weight is located.

The OCS communicates the classification status to the ORC. The ORC uses the classification to determine whether the Passenger Advanced Front Air Bag inflation rate should be adjusted.

In order for the OCS to operate as designed, it is important for the front passenger to be seated properly and properly wearing the seat belt. Properly seated passengers are:

  • Sitting upright
  • Facing forward
  • Sitting in the center of the seat with their feet comfortably on or near the floor
  • Sitting with their back against the seatback and the seatback in an upright position

Seated Properly
Seated Properly

Lighter Weight Passengers (Including Small Adults)

When a lighter weight passenger, including a small adult, occupies the front passenger seat, the OCS may reduce the inflation rate of the Passenger Advanced Front Air Bag. This does not mean that the OCS is working improperly.

    More about «Supplemental Restraint System (SRS)»:

    Air Bag System Components

    Advanced Front Air Bags

    Advanced Front Air Bag Features

    Advanced Front Air Bag Operation

    Occupant Classification System (OCS) - Front Passenger Seat

    Occupant Classification Module (OCM) and Sensor

    Do not decrease OR increase the front passenger's seated weight on the front passenger seat

    Knee Impact Bolsters

    Supplemental Side Air Bags

    Side Impacts

    Rollover Events

    If A Deployment Occurs

    Enhanced Accident Response System

    Air Bag Warning Light

    Redundant Air Bag Warning Light

    Maintaining Your Air Bag System

    Event Data Recorder (EDR)

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