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Home >> Kia >> 2009 >> Sorento Base, A5SR2 >> Repair and Diagnosis >> Engine Performance >> System >> DTC Troubleshooting Procedures (3 Of 3) >> P0685: ECM/Pcm Power Relay Control Circuit/Open >> Control Circuit Inspection
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Control Circuit Inspection

  1. Check short in harness
    1. IG "OFF".
    2. Disconnect Main Relay and ECM connector.
    3. Measure resistance between terminal 86 of Main Relay and chassis ground.
    4. Measure resistance between terminals 86 and 85 of Main Relay.

      Specification: Infinite

      Fig 1: Measuring Resistance Between Terminals 86 And 85 Of Main Relay
      G06412058Courtesy of KIA MOTORS AMERICA, INC.
    5. Is the measured resistance within specification?

      YES 

      • Go to step  2.

      NO 

  2. Check open in harness
    1. IG "OFF".
    2. Disconnect Main Relay and ECM connector.
    3. Measure resistance between harness terminal 85 of Main Relay and harness terminal 43 of ECM harness Connector (C144-A).

      Specification: Prix. below 1Ω

      Fig 2: Measuring Resistance Between Harness Terminal 85 Of Main Relay And Harness Terminal 43 Of ECM Harness Connector (C144-A)
      G06412059Courtesy of KIA MOTORS AMERICA, INC.
    4. Is the measured resistance within specifications?

      YES 

      NO