Throttle Position Sensor

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Throttle Position (TP) Sensor is a rotary potentiometer sensor that provides a signal to PCM that is linearly proportional to throttle plate/shaft position.
TP sensor housing has a 3-blade electrical connector that may be gold plated.
The gold plating increases corrosion resistance on terminals and increases connector durability.
Throttle Position (TP) Sensor is mounted on Throttle Body and has 4 operating conditions:
- Closed throttle (idle or deceleration).
- Part throttle (cruise or moderate acceleration).
- Wide open throttle.
- Throttle angle rate.
TP sensor signal affects air/fuel ratio, injector timing, idle speed, EGR flow and ignition timing.
On some applications, TP sensor input is used in determining transmission Electronic Pressure Control (EPC) pressure, shift and Torque Converter Clutch (TCC) scheduling.