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Home >> Subaru >> 1991 >> Legacy Sedan 4WD F4-2.2L SOHC >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Ignition Control Module >> Description and Operation >> Ignitor
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Ignitor

Ignition Circuit:





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

LOCATION
On the firewall.


OPERATION
The ignitor 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 ECU controls ignitor switching, enabling the ECU to regulate ignition timing based engine operating condition information received from various sensors.