RAM 1500 Truck 2WD V8-5.7L VIN 2 (2006)
Seat Sensor/Switch: Description and Operation
The seat track position sensor (2) is a Hall Effect-type sensor used on some models. This sensor consists of a Hall Effect Integrated Circuit (IC) chip
encased in potting material within a cavity of the molded plastic sensor housing.
The sensor housing has a mounting slot containing an integral latch feature (1) and slides and latches onto a stamped metal blade-type bracket located on
the inboard side of the upper inboard seat adjuster track near the rear of the driver side front seat. A molded connector receptacle (3) integral to the
sensor housing is connected to the vehicle electrical system through a connector and take out of the driver seat wire harness beneath the front seat
cushion frame.
The seat track position sensor cannot be adjusted or repaired and, if faulty or damaged, the entire sensor must be replaced.
The seat track position sensor is designed to provide a seat position data input to the Occupant Restraint Controller (ORC) indicating whether the driver
side front seat is in a full forward or a not full forward position. The ORC uses this data as an additional logic input for use in determining the
appropriate deployment force to be used when deploying the multistage driver side front airbag.
The seat track position sensor receives a nominal five volt supply from the ORC. The sensor communicates the seat position by modulating the voltage
returned to the ORC on a sensor data circuit. The ORC also monitors the condition of the sensor circuits and will store a Diagnostic Trouble Code
(DTC) for any fault that is detected, and sends messages over the CAN data bus to illuminate the airbag indicator in the instrument cluster. For proper
diagnosis of the seat track position sensor, a diagnostic scan tool is required. Refer to Trouble Code Diagnostic Charts.
