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Home >> Hyundai >> 2014 >> Equus Ultimate >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) >> DTC P0685: ECM/PCM Power Relay Control Circuit/Open >> Wiring Inspection >> Control Circuit Inspection

Control Circuit Inspection

  1. IG "OFF" and disconnect the main relay and ECM connector.
  2. Measure the resistance between control terminal of main relay harness connector and main relay control terminal of ECM harness connector.

    Specification:  Approx. below 1Ω

  3. Is the measured resistance within specification?

    YES 

    NO