8D–228
WIRING SYSTEM
Heater and Air Conditioning
General Description
The heater and air conditioning system consists of
pressure switch, A/C switch, electronic thermostat,
blower motor, fan switch, magnetic clutch for A/C
compressor, blower resistor, relays and PCM (or ECM).
Basically the air conditioning system works while the A/C
switch and the fan switch are turned on, and stops
working when the pressure switch turns off or the
electronic thermostat cuts off the circuit.
The PCM (or the ECM) also stops working of the air
conditioning system to reduce the engine load.
Refer to Heating and Ventilation System, and Air
Conditioning System in HVAC System.