What is the main function of the throttle position sensor?

[FrankLee]

The main function of the throttle position sensor is to detect the changes in throttle opening, determine the operating conditions of the engine, and primarily used in the engine electronic fuel injection system and electronically controlled automatic transmission system. It converts the changes in throttle opening into electrical signals and inputs them to the electronic control unit (ECU). The ECU determines the operating conditions of the engine based on the throttle position signal, and then the computer adjusts the fuel injection quantity according to the operating condition information. Essentially, it is a variable resistor. Throttle position sensors can be divided into linear output type throttle position sensors and dry output type throttle position sensors.