How to test the throttle position sensor?

1 Answers
AthenaFitz
07/29/25 3:44pm
Throttle position sensor testing method: When the throttle is fully closed, the idle contact IDL should be conductive; when the throttle is fully open or nearly fully open, the full load contact PSW should be conductive; in other cases, both contacts should not be conductive. The following is an introduction to the engine throttle: 1. The car engine throttle is operated by the driver through the accelerator pedal to change the engine's intake air volume, thereby controlling the engine's operation. 2. Different throttle opening degrees indicate different operating conditions of the engine. 3. To ensure the fuel injection volume meets the requirements of different operating conditions, the electronic control gasoline injection system is equipped with a throttle position sensor on the throttle body. It can convert the throttle opening degree into an electrical signal and send it to the ECU as the basis for the ECU to determine the engine's operating conditions.
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