Vehicle Speed Sensor: Description and Operation

The Vehicle Speed Sensor (VSS) is a small signal generator that is turned by a gear inside the transaxle assembly. In this way, the Vehicle Speed Sensor (VSS) produces a signal that is proportional to vehicle road speed.

The Vehicle Speed Sensor (VSS supplies a signal to the components that require vehicle speed information: the Speed Control Amplifier (on Speed Control-equipped vehicles) and the Electronic Engine Control (EEC) Module.