METHOD FOR DIAGNOSING FAILURE OF CRANK SHAFT POSITION SENSOR OF VEHICLE

摘要

The present invention is a method for diagnosing a failure of a crankshaft position sensor of a vehicle, the method comprising: determining whether an electrical abnormality occurs by measuring a voltage value from a crankshaft position sensor; And determining whether there is an abnormality in the crank signal by receiving a signal from the crankshaft position sensor. According to the present invention, it is possible to determine whether there is an electrical failure in the crankshaft position sensor and the type of the failure by using the internal diagnosis information of the smart IC provided in the control unit of the vehicle.