A throttle position sensor is a sensor used to monitor the position of the throttle in an engine. The sensor is usually located on the throttle-body spindle so that it can directly monitor the position of the throttle valve butterfly.
The Throttle Position Sensor is conneceted to the end of the Throttle Shaft inside the Throttle Body. P.S. The Throttle Position Sensor is part of the Throttle Body and must be replaced as a unit. Hope this helps ya.