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Home >> Hyundai >> 2017 >> Santa Fe XL Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) >> DTC P0685: ECM/PCM Power Relay Control Circuit/Open >> Wiring Inspection >> Control Relay Power Circuit Inspection >> Check open in harness
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Check open in harness

  1. IG "OFF". Disconnect EMS box and PCM connector.
  2. Measure the resistance between control relay power terminal of main relay (EMS box) harness connector and main relay control terminal of PCM harness connector.

    Specification:  Approx. below 1Ω

  3. Is the measured resistance within specification?

    YES 

    NO