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

The vehicle speed sensor (VSS) is mounted to the automatic transaxle assembly and produces an AC signal. The frequency of this signal is proportional to the speed at which the automatic transaxle assembly output shaft rotates, which in turn, is proportional to the speed of the vehicle.

The AC signal is supplied to the cruise control module assembly and speedometer assembly by the PCM.

The signal sent to the cruise control module assembly and speedometer assembly is at a rate of 4000 pulses per mile. The Powertrain Control Module (PCM) converts the number of pulses per mile per second to determine vehicle speed.