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Home >> Mazda >> 2019 >> 3 Base, 4D Hatchback, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting - Engine >> A/C Does Not Work Sufficiently [SKYACTIV-G] >> Notes
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A/C Does Not Work Sufficiently [SKYACTIV-G]: Notes

A/C DOES NOT WORK SUFFICIENTLY [SKYACTIV-G] DETECTION CONDITION AND POSSIBLE CAUSE

Troubleshooting item A/C does not work sufficiently
Description
  • A/C compressor magnetic clutch does not engage when A/C switch is turned on.
  • Compressor valve inoperative
Possible cause
  • PCM, body control module (BCM) or dash-electrical supply unit DTC is stored
  • Refrigerant pressure sensor No. 1 malfunction
  • Refrigerant pressure sensor No. 2 malfunction
  • Improper refrigerant charging amount
  • Seized A/C compressor
  • Evaporator temperature sensor malfunction
  • Short or open circuit in any of the following evaporator temperature sensor circuits.
    • Signal circuit
    • Ground circuit
  • Body control module (BCM) malfunction (Does not receive A/C request signal from climate control unit or transmit it to PCM)
  • Climate control unit malfunction (A/C switch malfunction or climate control unit does not determine A/C request or transmit A/C request signal)
  • Open circuit in wiring harness between magnetic clutch and body ground
  • A/C relay stuck open
  • Compressor valve malfunction (built-into A/C compressor)
  • Open circuit in A/C relay primary side power supply circuit
  • Open circuit in A/C relay secondary side power supply circuit
  • Open circuit in A/C relay control circuit
  • Open circuit in magnetic clutch power supply circuit
  • Open circuit in compressor valve power supply circuit
  • Open circuit in compressor valve control circuit
G13174034Courtesy of MAZDA MOTORS CORP.
G13174035Courtesy of MAZDA MOTORS CORP.
G13174036Courtesy of MAZDA MOTORS CORP.
G13174037Courtesy of MAZDA MOTORS CORP.
G13174038Courtesy of MAZDA MOTORS CORP.
G13174039Courtesy of MAZDA MOTORS CORP.
G13174040Courtesy of MAZDA MOTORS CORP.
Troubleshooting item  A/C does not work sufficiently 
G13174041Courtesy of MAZDA MOTORS CORP.
G13174042Courtesy of MAZDA MOTORS CORP.
G13174043Courtesy of MAZDA MOTORS CORP.
G13174044Courtesy of MAZDA MOTORS CORP.
G13174045Courtesy of MAZDA MOTORS CORP.
CAUTION:
  • Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.