Vehicle Speed Sensor (3-Speed A/T)
Vehicle Speed Sensor (VSS) delivers input signal to Powertrain Control Module (PCM) to indicate transaxle output shaft speed. PCM uses input signal from VSS, 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. Vehicle speed sensor is mounted on extension housing for passenger's side axle shaft at firewall side of transaxle. See Fig 1 .