Volkswagen Jetta throttle deliberate drive circuit

According to the fault code. First measure the harness and troubleshoot it.

If the fault of replacing the throttle valve is not solved, judge that the computer is damaged.

Before checking the transmission or carrying out fault diagnosis, check the oil level and quality of the transmission first. Put the shift lever in the P position, let the engine idle for at least a few minutes, the oil reaches the normal working temperature, and the car must stop on a flat road, so as to ensure the normal and stable oil level between the differential and the transmission.