RAM 3500 Truck 2WD V10-8.0L VIN W MDC (1999)
Vehicle Speed Sensor/Transducer - Cruise Control: Description and Operation
The Vehicle Speed Sensor (VSS) is no longer used for any Dodge Truck.
Vehicle speed and distance covered are measured by the Rear Wheel Speed Sensor. The sensor is mounted to the rear axle. A signal is sent from this
sensor to the Controller Antilock Brake (CAB) computer. A signal is then sent from the CAB to the Powertrain Control Module (PCM) to determine
vehicle speed and distance covered. The PCM will then determine strategies for speed control system operation.
Testing for the Rear Wheel Speed Sensor can be found at Antilock Brakes / Traction Control Systems. See: Brakes and Traction Control/Antilock
Brakes / Traction Control Systems/Testing and Inspection
All other testing for the Vehicle Speed Signal can be found at Computers and Control Systems. See: Powertrain Management/Computers and Control
Systems/Testing and Inspection
