Ignition System - Electronic: Operation
Whenever 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.
NOTE:
For wiring schematic of Mitsubishi models with Turbo engines and ECI, see the appropriate article in COMPUTERIZED ENGINE CONTROLS section.