Troubleshooting Index (Auto A/C)

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.

TROUBLESHOOTING INDEX (AUTO A/C)

Troubleshooting item	Description
Insufficient air (or no air) blown from vents (See INSUFFICIENT AIR (OR NO AIR) BLOWN FROM VENTS (AUTO A/C) .)	Insufficient airflow from vent or duct No airflow from vent or duct Front airflow mode does not change
Amount of air blown from vents does not change (See AMOUNT OF AIR BLOWN FROM VENTS DOES NOT CHANGE (AUTO A/C) (US) .)	Blower motor does not operate even if airflow volume control switch is operated (no airflow from vent) Blower motor operation does not change even if airflow volume control switch is operated (airflow volume from vent does not change)
Air intake mode does not change (See AIR INTAKE MODE DOES NOT CHANGE (AUTO A/C) .)	Air intake mode does not change when switching REC/FRESH mode No change in wind noise when airflow volume is set to 3 or more even if REC/FRESH switch is operated
No temperature control with climate control unit (See NO TEMPERATURE CONTROL WITH CLIMATE CONTROL UNIT (AUTO A/C) .)	Temperature does not change when operating temperature control dial
Windshield fogged (See WINDSHIELD FOGGED (AUTO A/C) .)	A/C compressor does not operate while airflow mode is in DEFROSTER or DEF/HEAT modes Air intake mode does not change to FRESH while airflow mode is in DEFROSTER or DEF/HEAT modes
Air from vents not cold enough (See AIR FROM VENTS NOT COLD ENOUGH (AUTO A/C) .)	Insufficient cooled-airflow even if airflow temperature setting is MAX COLD Excessive time required to cool to set temperature
No cool air (See NO COOL AIR (AUTO A/C) (US) .)	Magnetic clutch does not operate No cool airflow even if airflow temperature setting is MAX COLD
Dual A/C control does not operate (See DUAL A/C CONTROL DOES NOT OPERATE (AUTO A/C) .)	Driver or passenger side temperature control dial does not operate individually
Noise while operating A/C system (See NOISE WHILE OPERATING A/C SYSTEM (AUTO A/C) .)	Abnormal noise occurring from near A/C compressor during A/C operation Abnormal noise occurring from near A/C compressor regardless of A/C operation Occasional abnormal noise occurring from near A/C compressor during A/C operation
Switch/dial operation does not respond (See SWITCH/DIAL OPERATION DOES NOT RESPOND (AUTO A/C) .)	Specific switch/dial operation of climate control unit does not respond
All switch/dial operation does not respond (See ALL SWITCH/DIAL OPERATION DOES NOT RESPOND (AUTO A/C) (US) .)	All switch/dial operation of climate control unit does not respond Indicator light of front climate control unit does not turn on
Climate control unit does not store information (See CLIMATE CONTROL UNIT DOES NOT STORE INFORMATION (AUTO A/C) .)	When ignition is switched ON (engine off or on), climate control unit activated with set temperature at 22°C {72°F} while in AUTO Past malfunction code is not stored in climate control unit
No warm airflow from vent (See NO WARM AIRFLOW FROM VENT (AUTO A/C) .)	No warm airflow even if airflow temperature setting is MAX HOT