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Home >> Jeep >> 1997 >> Grand 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 >> Outputs >> Ignition Coil

Ignition Coil

IGNITION COIL-PCM OUTPUT

System voltage is supplied to the ignition coil positive terminal. The Powertrain Control Module (PCM) operates the ignition coil. Base (initial) ignition timing is not adjustable. The PCM adjusts ignition timing to meet changing engine operating conditions.

Fig. 19 Ignition Coil - 4.0:




The ignition coil is located near the distributor.

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