Firebird V8-350 5.7L VIN P SFI (1996)
Vehicle Speed Sensor/Transducer - Cruise Control: Description and Operation
DESCRIPTION
The vehicle speed sensor is mounted to the automatic transmission and produces and Alternating Current (AC) signal. The frequency of this signal is
proportional to the speed in which the transmission output shaft rotates, which is proportional to the speed of the vehicle.
OPERATION
The AC signal produced by the sensor is supplied to the Engine Control Module (ECM), cruise control module and instrument cluster. The signal is
transmitted at a rate of 4000 pulses per mile. The ECM, cruise control module and speedometer internally convert the number of pulses per miles per
second to determine vehicle speed.
