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Home >> Kia >> 2017 >> Optima Plug-In Hybrid EX >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition System (PHEV) >> Repair Procedures >> On-Vehicle Inspection >> Inspect Ignition Coil Assembly And Perform Spark Test
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Inspect Ignition Coil Assembly And Perform Spark Test

  1. Check for DTCs.
    NOTE: If a DTC is present, perform troubleshooting in accordance with the procedure for that DTC. (Refer to DTC (1 Of 3) INDEX /DTC (2 Of 3) INDEX /DTC (3 Of 3) INDEX DTC guide)
  2. Check if sparks occur.
    1. Remove the engine cover.
    2. Remove the ignition coils.

      (Refer to Ignition System - "IGNITION COIL ")

    3. Using a spark plug wrench, remove the spark plugs.
    4. Disconnect the injector extension connectors.
    5. Ground the spark plug to the engine.
      G12347115Courtesy of KIA MOTORS AMERICA, INC.
    6. Check if sparks occur at each spark plug while engine is being cranked.
    NOTE: Do not crank the engine for more then 5 seconds.
  3. If sparks do not occur, perform the following test.
    G12347116Courtesy of KIA MOTORS AMERICA, INC.
  4. Using a spark plug wrench, install spark plugs.
  5. Install the ignition coils.
  6. Install the engine cover.
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