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Ignition Coils

WARNING: This page is about a different car, the 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

Each ignition coil contains a solid state driver module as its primary element. The engine control module (ECM) signals the coil driver to initiate a firing event by applying ignition control (IC) circuit current for the appropriate time, or dwell. When the current is removed the coil fires the spark plug. The ignition coils use the following circuits:

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