Vehicle Speed Sensor: Description and Operation

OPERATION
The vehicle speed sensor signal is provided to the PCM by the TCM. The signal is calculated by the TCM based on the output speed sensor signal and the speedometer pinion factor. The PCM supplies a 5 volt pull up voltage from cavity 66 to TCM cavity 58. The sensor signal is created by the TCM alternating the signal from 5V to 0.3V.