1. Disconnect the negative battery cable.
2. Disconnect the air mix and airflow mode wires from each wire clamp and link. (Manual air conditioner)
3. Remove the center panel. (See CENTER PANEL MODULE REMOVAL/INSTALLATION.)
4. Remove the screws and climate control unit. (Full-auto air conditioner)
5. Release the hook and pull the climate control unit toward you. (Manual air conditioner)
6. Disconnect the climate control unit connectors and remove the climate control unit. (Manual air conditioner)
Mazda 6 Service Manual: Windshield Defrosting and Defogging
Press the windshield defroster switch. In this position, the outside air position
is automatically selected, and the air conditioner automatically turns on. The air
conditioner will directly dehumidify the air to the front windshield and side windows.
Airflow amount will be increased.
WARNING
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Mazda 6 Service Manual: Service cautions
HANDLING INSUFFICIENT REFRIGERANT LEVEL
If an insufficient refrigerant level is detected at troubleshooting,
do not charge (add) the refrigerant. Because an accurate amount of
refrigerant cannot be determined from the pressure indicated on the manifold
gauge, never charge the refrigeran ...