What is the reason for the failure of initialization self-learning of the lower limit position of electronic throttle?

The reasons for the failure of initialization self-learning of the lower limit position of electronic throttle may be: the throttle is too dirty or mechanical failure, and it is not in the idle position; Throttle potentiometer failure; Battery voltage is too low; There is a fault in the fault memory of the relevant control unit; Do not close all accessories, etc.

Electronic throttle is an important control part of automobile engine. The basic structure of the electronic throttle system consists of the following parts: 1, engine 2, speed sensor 3, throttle position sensor 4, throttle actuator 5, throttle 6, throttle pedal position sensor 7, speed sensor 8, transmission 9, throttle pedal 10 and throttle electronic control unit (ECU).