METHOD FOR DISTINGUISHING THE REASON OF MISFIRE

摘要

The present invention includes a step of confirming a voltage detected from a rear oxygen sensor when a misfire of the vehicle is sensed, and a step of checking a voltage detected from the rear oxygen sensor, And determining whether the cause of the misfire is an ignition coil abnormality or an injector abnormality. According to the present invention, it is possible to determine whether a cause of a failure in a vehicle misfire condition exists in an ignition coil or in an injector .