Pic. 8.60. Mazda 3 air conditioner and heater: 1 - block of the air conditioning system; 2 - air filter; 3 - the main thrust of the air intake mode; 4 - rear air duct; 5 - compressor of the air conditioning system; 6 - capacitor; 7 - heater radiator hose; 8 - refrigerant line
The electronic control unit of the air conditioner has a self-diagnosis function. A system fault is stored in the DTC memory and the A/C switch indicator flashes.