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Home >> Jeep >> 2001 >> Cherokee Limited, RWD >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Ignition Systems >> Timing Control Systems >> Ignition Coils (4.7L)

Ignition Coils (4.7L)

On 4.7L, 8 individual coils are used. Each coil is mounted directly on spark plug. Battery voltage is supplied to all 8 coils through ASD relay. PCM operates coils and adjusts ignition timing by controlling coil ground circuits.