Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la or
lemon-manuals.org.ua
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Ignition Coil: Description and Operation
Each
ignition coil has an ignition 1 feed and a ground. The ECM supplies a low reference and an Ignition Control (IC) Circuit. Each ignition coil contains a solid state driver module as its primary element. The ECM signals the coil driver to initiate a firing event by applying the IC circuit voltage for the appropriate time, or dwell. When the voltage is removed the coil fires the
spark plug.