Vehicle Speed Sensor/Transducer - Cruise Control: Description and Operation

Underhood Cruise Control Components:

The VSS is an electronic relay that is mounted on the transaxle. As the transaxle turns the VSS, the VSS provides the speedometer with a vehicle speed input (voltage pulses). This input is used to drive the speedometer. The speedometer then converts the vehicle speed input into a more precise waveform and provides the Powertrain Control Module (PCM) and the cruise control module with its own vehicle speed input. The cruise control module converts this input into a vehicle speed.