Operation CHARM: Car repair manuals for everyone.

Ignition Coil-PCM Output

IGNITION COIL-PCM OUTPUT

System voltage from the Automatic Shutdown (ASD) relay is supplied to the ignition coil positive terminal. The Powertrain Control Module (PCM) operates the ignition coil. Ignition timing is not adjustable. The PCM adjusts ignition timing to meet changing engine operating conditions.

NOTE: Refer Ignition System for additional information.