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Home >> Hyundai >> 2007 >> Veracruz GLS, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 2) >> DTC Troubleshooting Procedures >> DTC P0646 A/C Clutch Relay Control Circuit Low >> Control Circuit Inspection >> Check Open In Harness

Check Open In Harness

  1. IG "OFF".
  2. Disconnect A/C relay and PCM connector.
  3. Measure the resistance between control terminal of A/C relay harness connector and A/C relay control terminal of PCM harness connector.

    Specification : Approx. below 1 Ω

Is the measured resistance within specification ?

YES: 

NO: 

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