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Home › Hyundai › 2007 › Azera GLS › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnosis (2 Of 2) › DTC Troubleshooting Procedures › DTC P0647 A/C Clutch Relay Control Circuit High › Component Inspection

Component Inspection

  1. Check A/C relay
    1. IG "OFF".
    2. Disconnect A/C relay.
    3. Measure the resistance between terminal 2 and 3 of A/C relay.
    4. Measure the resistance between terminal 1 and 4 of A/C relay.

      SPECIFICATION 

      TERMINALS REFERENCE CHART

      Terminal Power approval
      1~4 NO
      2~3 YES
      ( 70Ω ~ 120Ω)
      Fig 1: Measuring Resistance Between Terminal 1 And 4 Of A/C Relay
      G04879939
    5. Is the measured resistance within specification?

      YES 

      • Substitute with a known - good PCM and check for proper operation. If the problem is corrected, replace PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

      NO 

      • Substitute with a known - good A/C relay and check for proper operation. If the problem is corrected, replace A/C relay and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
      NOTE: There is a memory reset function on scantool that can erase optional parts automatically detected and memorized by PCM. After testing PCM on the vehicle, use this function to reuse the PCM on the others
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