Throttle Position Sensor: Description and Operation

Throttle Sensor:

The Throttle Sensor, attached to the throttle body, provides the ECU with a throttle fully closed or throttle fully open signal by means of separate contacts within the sensor. The sensor is rotated by and in conjunction with the throttle shaft so that sensor and shaft positions correspond when the sensor is properly adjusted. At intermediate throttle positions (between fully closed and fully opened), neither sensor contact provides the ECU with a signal.