Seat Weight Sensor: Description

Fig 1: Seat Weight Sensor

Courtesy of DAIMLERCHRYSLER CORP.

The seat weight sensors (4) are strain gauge-type units. The electronic elements of the sensor are encased in a potting material within the molded plastic sensor housing. Four sensors (4) are used in the Occupant Classification System (OCS). A sensor is located at each corner of the passenger side front seat.

The strain gauge for each sensor is secured by three screws and nuts (2) between the seat cushion frame and the seat adjusters (3). A molded connector receptacle (1) integral to each sensor housing is connected to the vehicle electrical system through a dedicated connector and take out of the passenger seat wire harness beneath the seat cushion frame.

The seat weight sensors cannot be adjusted or repaired and, if faulty or damaged, the entire sensor must be replaced.

WARNING: The Seat Weight Sensor is a sensitive, calibrated unit and must be handled carefully. Do not drop or handle roughly. If dropped or damaged, replace with another sensor. Failure to do so may result in occupant injury or death.

WARNING: The front passenger seat must be handled carefully as well. When removing the seat, be careful when setting on floor not to drop. If dropped, the sensor may be inoperative, could result in occupant injury, or possibly death.

WARNING: When the seat is on the floor, no one should sit in the front passenger seat. This uneven force may damage the sensing ability of the seat weight sensors. If sat on and damaged, the sensor may be inoperative, could result in occupant injury, or possibly death.