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Home › Kia › 2018 › Sedona SX › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnosis (3 Of 3) › DTC P0685: ECM/PCM Power Relay Control Circuit/Open › Component Inspection › Confirm Part Inspection

Confirm Part Inspection

  1. Does the Main Relay operate properly? (Check variation)

    YES 

    • Carefully re-do this troubleshooting guide steps.
    • If the diagnostics have been performed correctly with no failure found, replace the PCM and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

    • Carefully re-do this troubleshooting guide steps.
    • If the diagnostics have been performed correctly with no failure found, replace the Main Relay and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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