Diesel Data: Automotive Repair

Vehicle Speed Sensor

T350 MANUAL TRANSAXLE

VEHICLE SPEED SENSOR

The Vehicle Speed Sensor(VSS) is a pulse generator mounted to an adapter near the transmission output shaft. The sensor is driven through the adapter by a speedometer pinion gear. The VSS pulse signal to the speedometer/odometer is monitored by the PCM speed control circuitry to determine vehicle speed and to maintain speed control set speed.