Vehicle Speed Sensor (VSS)

Vehicle Speed Sensor (VSS)




The PCM determines the speed of the vehicle by converting a pulsing voltage signal from the vehicle speed sensor (VSS) into miles per hour. The PCM uses this signal to operate the cruise control, speedometer, and the TCC and shift solenoids in the transmission. For more information on the TCC and shift solenoids, refer to Transmission Control System Diagnosis.