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Home › Hyundai › 2011 › Azera GLS › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnosis (3 Of 3) › DTC P0685: ECM/PCM Power Relay Control Circuit/Open › Inspection/Repair › W/Harness 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 chassis ground.

    Specification: Infinite

    Fig 1: Measuring Resistance Between Control Terminal Of Main Relay Harness Connector And Chassis Ground
    G07252201Courtesy of HYUNDAI MOTOR CO.
  3. Is the measured resistance within specification?

    YES

    • Go to "Check open in harness".

    NO

  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

    Fig 2: Measuring Resistance Between Control Terminal Of Main Relay Harness Connector And Main Relay Control Terminal Of ECM Harness Connector
    G07252202Courtesy of HYUNDAI MOTOR CO.
  3. Is the measured resistance within specification?

    YES

    NO

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