THROTTLE POSITION (TP) SENSOR CONSTRUCTION/OPERATION [MZI-3.7]

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• The TP sensor is a rotary potentiometer sensor that provides a signal to the PCM that is linearly proportional to the throttle plate/shaft position.

• The TP sensor is mounted on the throttle body.

• As the TP sensor is rotated by the throttle shaft, 4 operating conditions are determined by the PCM from the TP.

The operating conditions

― Closed throttle (includes idle or deceleration)

― Part throttle (includes cruise or moderate acceleration)

― Wide open throttle (includes maximum acceleration or de-choke on crank)

― Throttle angle rate