Throttle Position (TP) Sensor

The throttle position sensor (TP sensor) (9B989) is a rotary potentiometer in which the PCM determines four operating modes from the TP signal. These are:

• Closed throttle (idle or deceleration).
• Part throttle (cruise, moderate acceleration).
• Wide open throttle (WOT) (maximum acceleration, de-choke on crank and A/C cutout).
• Throttle angle rate.