Measure the opening of magotan throttle valve by seeking the line of 5053.

The throttle plug is not waterproof. If you have the habit of flushing the engine, please check whether the plug is corroded by water first. In addition, after the EPC light is on, the output power of the engine will be controlled, so you will feel weak when accelerating. It is recommended to measure the opening angle and wiring connection of throttle valve. If it is normal, find a throttle body and try to change it. In addition, the fault of N249 will also affect the acceleration performance of the engine, so it is recommended to carry out maintenance at the same time.