Output Speed Sensor (A/T)

The output speed sensor is a two-wire magnetic pickup device that generates an AC voltage signal as rotation occurs. It is threaded into the transaxle case and sealed with an "O" ring. See Figure . The sensor is considered a primary input to the Transmission Control Module (TCM). The TCM converts this signal into a pulse per mile signal and sends it to the Powertrain Control Module (PCM). The PCM, in turn, sends the vehicle speed message across the communication bus to the Body Control Module (BCM). The BCM sends this signal to the instrument cluster to display vehicle speed to the driver. The vehicle speed signal pulse is roughly 8000 pulses per mile.