The 1993 Toyota Pickup consists of battery, ignition switch, heater relay, blower switch, heater, blower motor, low pressure switch, A/C switch, A/C amplifier, thermistor, and magnetic clutch. The following figure illustrates the 1993 Toyota Pickup Wiring.

1993 Toyota Pickup Air Conditioning Electrical System Wiring

Compressor draws off gaseous refrigerant from the evaporator and compresses it. This cause the refrigerant gas temperature and pressure to rise rapidly. Condenser through which the heated refrigerant gas gives off heat to the engine cooling air. The refrigerant gas cools off and once again becomes liquid.

Receiver removes any traces of moisture and filters out  dirt in the system. It also serves as a reservoir for excess refrigerant. Expansion valve meters liquid refrigerant into the evaporator cores, causing a drop in pressure and consequent drop in temperature.

Evaporator, in which the released refrigerant expands and flows through the evaporator tubes. It then removes heat from the air blowing across the fins and tubes, and evaporators, causing the temperature inside the car to be gradually lowered.



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