Operation CHARM: Car repair manuals for everyone.

Ignition Control Module: Description and Operation

Ignition System:





PURPOSE
Controls ignition discharge by interrupting the ignition coil primary current ground. The igniter is a solid state component.

#6 - Igniter:





LOCATION
On the firewall.


OPERATION
The igniter is a switching device used to interrupt the ignition coil ground connection and induce high voltage from the coil secondary windings. A signal from the ECM controls igniter switching, enabling the ECM to regulate ignition timing based engine operating condition information received from various sensors.