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Home >> Mazda >> 2005 >> 3 SP23, 4D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting [Engine] >> No.24 A/C Is Always On Or A/C Compressor Runs Continuously >> Notes
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No.24 A/C Is Always On Or A/C Compressor Runs Continuously: Notes

POSSIBLE CAUSES OF A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY

24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY.
DESCRIPTION  A/C compressor magnetic clutch does not disengage.
POSSIBLE CAUSE 
  • A/C compressor magnetic clutch engagement is stuck. A/C relay is stuck closed.
  • Short to GND in wiring harness between A/C switch and PCM
  • Short to GND in wiring harness between A/C relay and PCM
  • Short circuit to battery power in A/C relay to magnetic clutch