Throttle Position Sensor

Throttle Position Sensor
The Throttle Position Sensor (TPS) comprises a potentiometer with a pointer that is rotated by the throttle shaft. The ECM supplies the potentiometer with a nominal 5 volts. The signal output from the TPS to the ECM depends on the position of the pointer and ultimately the position of the throttle shaft. The sensor's position in relation to the shaft cannot be adjusted, and the ECM compensates for wear and ageing in service.