Diagnostic apparatus and methods for ignition circuits.

摘要

Diagnostic apparatus (30) for detecting the correct operation of an exciter circuit (10) connected to the igniter of an ignition system by a conductor (20) is disclosed. The current discharged from the exciter circuit (10) through the igniter, and the current discharged from the exciter circuit (10) other than through the igniter, is detected by a discharge current pulse detection device (32). A single output (50) is given, indicating the type of the discharge from the exciter circuit (10). <IMAGE>