Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Hyundai >> 2007 >> Azera GLS >> 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 >> Power Circuit Inspection

Power Circuit Inspection

  1. Check voltage
    1. IG "OFF".
    2. Disconnect A/C relay connector.
    3. IG "ON" and ENG "OFF"
    4. Measure the voltage between terminal 2 of A/C relay harness connector and chassis ground.
    5. Measure the voltage between terminal 4 of A/C relay harness connector and chassis ground.

      Specification: B+

    6. Is the measured voltage normal?

      YES 

      NO 

      • Check the fuse between Battery and A/C relay.
      • Check Chassis ground 1 and 2 for looseness.
      • Repair Open or Short to ground in power circuit and go to "VERIFICATION OF VEHICLE REPAIR " procedure.