Checking the power of the air conditioner

Checking the power of the air conditioner must be carried out in the following order.

Prepare the MoDiC unit or DIS tester for operation, connect it to the vehicle and display the temperature value in the evaporator on the display screen. Install a thermometer 5 cm from the ceiling of the passenger compartment, bring its indication out of the passenger compartment. Warm up the engine and bring it to partial load mode (speed about 2000 min^-1).

Close all doors and windows, set the recirculation mode. Select the air distribution mode for the footwell and the heated glass mode. Set the temperature and fan speed to maximum. Warm up the air in the cabin to 50°C and turn on the air conditioning compressor. After 2–3 minutes, the temperature of the evaporator on the display should be about 10°C.

If the temperature is not reached, pump out the R134a refrigerant from the air conditioner and check its quantity, which should be 440±10 g (see passport), if necessary, restore it.