DTC P0500: Vehicle Speed Sensor (M/T): Description
WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Vehicle speed information is provided to the Powertrain Control Module (PCM) by the Vehicle Speed Sensor (VSS). The VSS is a permanent magnet generator that is mounted on the differential and produces a pulsing voltage. The AC voltage amplitude and frequency increases with vehicle speed. The PCM converts the pulsing voltage into MPH. The PCM supplies the necessary signal to the instrument panel for speedometer, odometer operation and to the cruise control module. The PCM also supplies the signal to the Body Control Module (BCM), and the electronic suspension control module, if equipped. If the PCM detects no vehicle speed for 50 seconds, DTC P0500 sets. DTC P0500 is a type "B" DTC.