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Because of coil design, spark plug cables (secondary cables) are not used with the 3.7L V-6 engine. 4.7L V-8 Battery voltage is supplied to the 8 individual ignition coils from the ASD relay. The Powertrain Control Module Base ignition timing is not adjustable. By controlling the coil ground circuit, the PCM is able to set the base The ignition coil is not oil filled. The windings are embedded in an epoxy compound. This provides heat and vibra- Because of coil design, spark plug cables (secondary cables) are not used with the 4.7L V-8 engine. REMOVAL 3.7L V-6 An individual ignition coil is used for each spark plug 1. Depending on which coil is being removed, the throttle body air intake tube or intake box may 2. Disconnect electrical connector from coil by push- ing downward on release lock on top of connector 3. Clean area at base of coil with compressed air before removal. 8I - 14 IGNITION SYSTEM - SERVICE INFORMATION ND |