What are the common faults of the throttle position sensor?

[Morris]

Common faults of the throttle position sensor include: short circuit or open circuit of the idle switch; poor contact of the sliding contact of the linear variable resistor; and improper installation or adjustment of the throttle position sensor, causing the idle switch not to close when the throttle is fully closed, or the idle switch to remain closed when the throttle is partially open. The throttle position sensor is also known as the throttle opening sensor or throttle switch. Its main function is to detect whether the engine is in idle condition or under load, whether it is accelerating or decelerating. Essentially, it is a variable resistor and several switches installed on the throttle body.