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Home >> Kia >> 2017 >> Optima Plug-In Hybrid EX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 3) (PHEV) >> DTC P0300-00: Random/Multiple Cylinder Misfire Detected >> System Inspection >> Ignition System Inspection >> Ignition Coil Inspection
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Ignition Coil Inspection

  1. Refer to IGNITION COIL and visually and/or physically inspect following conditions:
    • Damage, cracks, carbon and flashover.
    • Poor connection or damaged harness.
  2. Connect VMI to KDS/GDS and set up an oscilloscope as follow (2-channel);

    Channel A (+): Ground terminal of Ignition coil.

    Channel A (-): Chassis ground

    Channel B (+): Control terminal of Ignition coil.

    Channel B (-): Chassis ground

  3. Ignition "ON" & Engine "ON"

    Specification:  Refer to Figure below

    G12356699Courtesy of KIA MOTORS AMERICA, INC.
  4. Has any problems been found?

    YES 

    NO 

    • Go to "Spark Plug Inspection" procedure below.