Vehicle Speed Sensor: Description and Operation

PURPOSE
The Vehicle Speed Sensor (VSS) sends a pulsing voltage signal to the Powertrain Control Module (PCM) which the PCM converts to mph/km/h. This sensor mainly controls the operation of the Torque Converter Clutch Solenoid (TCC) system. See TCC Solenoid.. Under Transmission and Drive Train/Automatic Transmission /Transaxle/.

Also See Diagnostic Trouble Code (DTC) 24. Under Systems Diagnosis/Procedures/Diagnostic Charts/Powertrain Control Module (PCM) Diagnostic Trouble Codes. Powertrain Controls - ECM/PCM