Ignition System: Description
The electronic ignition system uses a Hall Effect distributor, engine sensors and a Single Module Engine Controller (SMEC). The SMEC controls entire ignition system. Different engine conditions require changes in timing advance. The SMEC has a built in microprocessor which continually receives input from engine sensors. The SMEC electronically advances or retards ignition timing, providing an infinite number of advance curves.
SMEC contains a built-in microprocessor which continually receives input voltage signals from various engine sensors. An analysis of these voltage signals determines current engine mode and the SMEC responds by electronically adjusting ignition timing. The SMEC determines when ignition is required and signals the ignition coil to produce electrical impulses that fire the spark plugs. With ignition in "RUN" position and no ignition signal is present, the Auto Shutdown (ASD) relay interrupts power to electric fuel pump, fuel injectors, and ignition coil.