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Home >> Jeep >> 1997 >> Cherokee 4WD L6-4.0L VIN S >> Repair and Diagnosis >> Relays and Modules >> Relays and Modules - Powertrain Management >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Description and Operation >> Powertrain Control Module (PCM) >> Ignition Coil-PCM Output
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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.

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