Haima m3 throttle ground short circuit

Only the ground wire affects each other.

There are many reasons for the failure of refueling when the driving computer does not turn on the light. It is necessary to use a special computer detector to read the fault code, and then carry out maintenance according to the relevant tips after reading the code.

Focus on checking the grounding wire of the engine computer and headlights, which is generally caused by false grounding.