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Home >> Mazda >> 2007 >> 6 Mazdaspeed >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting [Engine Control System L3 With TC) >> Engine Control System Operation Inspection >> A/C Cut-off Control System Inspection
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A/C Cut-off Control System Inspection

  1. Start the engine.
  2. Turn the A/C switch and fan switch on.
  3. Verify that the A/C compressor magnetic clutch actuates.
    • If it does not actuate, go to symptom troubleshooting "No.23 A/C does not work sufficiently".
  4. Fully open the throttle valve and verify that the A/C compressor magnetic clutch does not actuate for 2-5 s. 
    • If it actuates, inspect as follows:
      • A/C relay
      • Open or short to ground circuit in the wiring harness and connectors (Ignition switch-A/C relay-PCM terminal 4N)
      • A/C related parts
      • APP1, APP2 PIDs
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