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Home >> Kia >> 2005 >> Optima EX, 2.4 6 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System/Fuel System - 2.4L (A/T) >> MFI Control System >> Ignition Coil >> Notes

Ignition Coil: Notes

The ignition power transistor functions to control the ignition timing by controlling the ignition coil primary current through signals from the ECU.