Corvette V8-350 5.7L VIN P SFI (1996)
Vehicle Speed Sensor: Description and Operation
PURPOSE
The Vehicle Speed Sensor (VSS) is a pulse counter type input that informs the Powertrain Control Module (PCM) how fast the vehicle is being
driven. The VSS system uses an inductive sensor mounted in the tail housing of the transmission and a toothed reluctor wheel on the tail shaft. As the
reluctor rotates, the teeth alternately interfere with the magnetic field of the sensor creating an induced voltage pulse.
OPERATION
The VSS produces an AC voltage signal that increases with vehicle speed. The PCM processes this signal and sends it to the following components:
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Instrument Panel.
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Radio control head.
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Central Control Module (CCM).
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Chime Module.
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Cruise Control Module.
