CPC F02P 17/12 (2013.01) [G07C 5/0808 (2013.01); G07C 5/0825 (2013.01)] | 8 Claims |
1. A method for self-diagnosing an ignition coil of an engine of a vehicle, which self-diagnoses an error of the ignition coil configured to supply voltage to a spark plug, the method comprising:
generating, by a self-diagnosis signal generating device included in the ignition coil, a fault flag signal by monitoring a discharge time of a secondary current which flows on a secondary coil of the ignition coil; and
generating, by a controller, a diagnostic trouble code (DTC) according to a duration of the fault flag signal.
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