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Home >> Mazda >> 2024 >> 3 Carbon Turbo, 4D Hatchback >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Symptom Troubleshooting - Heater, Ventilation & Air Conditioning (HVAC) >> Air From Vents Not Cold Enough >> Outline

Air From Vents Not Cold Enough: Outline

AIR FROM VENTS NOT COLD ENOUGH DESCRIPTION AND POSSIBLE CAUSE

Troubleshooting item Air from vents not cold enough
Description
  • Insufficient cooled-airflow even if airflow temperature setting is MAX COLD.
  • Excessive time required to cool to set temperature
Possible cause
NOTE:
  • If the coolant temperature increases due to a cooling system malfunction, the fail-safe function disables the A/C operation.
  • Blower unit or air filter clogging
  • Ambient temperature sensor malfunction
  • Malfunction in wiring harness (including connector/terminal) between PCM and ambient temperature sensor
  • Drive belt tension malfunction
  • Refrigerant pressure sensor malfunction
  • Cooling fan operation malfunction
  • Condenser fin blockage
System wiring diagram
  • Not applicable