Output Shaft Speed (OSS) Sensor

The OSS sensor is a magnetic pick-up that sends a voltage signal to the PCM. This signal tells the PCM transmission output shaft speed. Voltage is also used for shift schedules, modulated converter clutch control, and determining EPC pressure.

OSS sensor is located on the rear of transmission case, on driver's side of vehicle. Control functions associated with OSS sensor are limiting vehicle speed, converter clutch control and shift quality.