Volkswagen LaVida throttle line part

Generally speaking, there are two possibilities when EPC light is on. First, the throttle should be cleaned when it is dirty. On the other hand, if the brake light does not light up, it is necessary to check the brake switch and wiring. Generally, the EPC fault light will also light up on vehicles with EPC signs because of oil problems. After the key door is opened, the EPC indicator will light up for a few seconds and then go out. If the vehicle does not go out after starting, it means that the mechanical and electronic systems of the vehicle have failed.

Volkswagen lavida maintenance

In EPC system, the former accelerator cable is replaced by the sensor of pedal device, and the engine control unit ECU calculates the optimal target accelerator opening according to the position data fed back by the sensor of pedal device, and sends a signal to the accelerator drive motor to make the accelerator rotate to this angle.

This method is superior to the pull-wire acceleration control, because the electronic throttle knows the power demand of the engine by calculating and analyzing the input signal of the accelerator pedal position, and converts this information into the torque of the engine through various actuators. When the engine speed needs to be adjusted due to safety, fuel consumption and other reasons.