Transmission Output Speed Sensor (4-Speed A/T)

Transmission output speed sensor provides input signal to Powertrain Control Module (PCM) to indicate vehicle speed. The PCM uses input signal along with TP sensor closed throttle input signal to determine if a closed throttle deceleration or normal idle condition exists. During deceleration, PCM controls Idle Air Control (IAC) motor to maintain a desired MAP value. During idle conditions, PCM controls IAC motor to maintain a desired idle speed. Transmission output speed sensor is located inside transmission. Connector is located above TR sensor, on side of transmission.