Why is there no power supply at the positive electrode of throttle position sensor?

Maybe the power fuse of the accelerator is broken.

When the throttle position sensor fails, the engine ECU can diagnose it and make the engine run in an emergency. With the V.A.G.1551or V.A.G.1552 scan tool, the fault information can be read through the fault diagnosis socket. When checking the resistance, please turn off the ignition switch and unplug the wire connector. The resistance between terminals on two plugs of ECU and sensor shall meet the requirements.

introduce

Throttle position sensor, also known as throttle opening sensor or throttle switch, is a device for detecting engine state.

When the throttle valve is in the idle position, the idle contact is closed and the idle working condition signal is output to the computer; When the throttle valve is in other positions, the idle contact is opened, and voltage signals with different angles relative to the throttle valve are output, and the computer identifies the engine load according to the signal voltage value; According to the change rate of signal voltage in a certain period of time, whether it is an acceleration state or a deceleration state is identified.