| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem of a conventional igniter executing CDI + multiple ignition, wherein a failure position cannot be properly monitored. SOLUTION: In the case that a current i1 detected by a current value monitor means 16 is larger than a first current value when a capacitor 1 is discharged by the operation of a second switch means 12, an ECU 11 detects the generation of an ignition coil short circuit abnormality. In the case that the detected current i1 is smaller than a second current vale, the ECU 11 detects the generation of a capacitor charge abnormality. When the abnormality is detected, a maximum value of a discharge section signal IGw of the ECU 11 is changed over from 5 V to 12 V, and a mode is changed over from a normal mode to a failure mode. In the case that the current i1 detected by the monitor means 16 does not reach a third current value when a current is carried through a primary coil 3a by the operation of an auxiliary circuit 13, the ECU 11 detects the generation of failure in an ignition coil 3 or an ignition circuit 4 to warn an occupant.
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