Ignition System: Operation

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When ignition is on, ignition coil primary circuit is energized. As distributor shaft rotates, the reluctor rotates inside the stator assembly.

As armature teeth pass the pegs of the pick-up coil, a signal is sent to the ignitor. The ignitor then breaks the primary circuit in the coil. This causes a high voltage surge in the coil secondary circuit. This high voltage is required to fire the spark plugs.

Fig 1: Electronic Ignition System With Internal Control Module

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

NOTE: For wiring schematic of Chrysler Motors Imports, see the appropriate article in 1988 COMPUTERIZED ENGINE CONTROLS section.