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What is the reason for the EPC light on the Jianghuai Junling and inability to accelerate?

1 Answers

LeMaggie

07/29/25 4:07pm

The illumination of the EPC light on the dashboard indicates a problem with the power control management system of the vehicle's engine. It is necessary to clean the throttle or inspect the brake switch and wiring, and then identify the fault location for repair. Below are the functions and working principles of the EPC light: Functions of the EPC light: The EPC indicator light is more commonly seen in Volkswagen vehicles. After turning the ignition key, the vehicle begins a self-check, and the EPC light will illuminate for a few seconds before turning off. If the light remains on after starting the vehicle, it indicates a fault in the mechanical and electronic systems. Generally, there are two scenarios when the EPC light is on. One is a dirty throttle, which should be cleaned. The other scenario is when the brake light is not working, requiring inspection of the brake switch and wiring. Additionally, due to fuel quality issues, the EPC fault light may also illuminate. Working principles of the EPC light: Traditionally, drivers controlled the throttle opening by manipulating the accelerator pedal through a cable. In the EPC system, the previous throttle cable is replaced by sensors in the pedal assembly. The engine control unit (ECU) calculates the optimal target throttle opening based on the position data fed back by the pedal assembly sensors and sends a signal to the throttle drive motor to rotate the throttle to the desired angle.

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