Automatic Air Conditioning

GENERAL DESCRIPTION




For the heater and air conditioning system, the heater and cooling units are combined in a single unit, which, with the a mode film damper and flow rate control valve in the heater unit, reduces ventilation resistance, increases fan power, and decreases noise.

OPERATION

CONDENSER FAN AND RADIATOR FAN CONTROL
- For the operation of each fan, refer to Engine Cooling - Diagnosis Symptom Chart.

COMPRESSOR CONTROL






When operating the air conditioning switch
- The air thermo sensor, which senses the temperature of the air flowing out of the evaporator, deactivates the compressor at 3 °C (37.4 °F) or below.
- The dual pressure switch turns OFF when the refrigerant pressure becomes excessively high or low, thus protecting the compressor circuit (See Table).
- When the air thermo sensor is activated, and the ignition switch, blower switch, and air conditioning switch are ON, the A/C compressor clutch relay is energized.

When operating the mode selection dial
- The air conditioning will work when the mode selection dial is set to the "Defroster" or "Defroster/foot" position, or the temperature control dial is set to the "MAX A/C" position. In other dial positions, when the air conditioning switch is turned on, the air conditioning will work.