Kia 2004.5 Spectra Service Technical Training page 222

2004.5 Spectra Technology
A/C COMPRESSOR
The A/C compressor is a swash plate type unit mounted
on the rear side of the engine. The magnetic clutch
enables the compressor to start and stop while the
engine is running. The compressor compresses the
evaporated refrigerant into high pressure (high
temperature) gas and pumps it out to the evaporator.
Note: The magnetic clutch has a thermal fuse (363.2°
F melt point), which disengages the clutch to protect
the drive belt and compressor.
A/C RELAY
The A/C relay is a normally open (NO) relay located in
the under hood relay box. An A/C ON request signal
is sent to the PCM when vehicle occupants push the
A/C switch. After checking the operating condition of
the engine, the PCM grounds the relay control coil to
close the NO switch and energize the magnetic clutch
from the 15A A/C fuse. The magnetic clutch uses
engine ground to complete the circuit.
Heating, Ventilation, & Air Conditioning (HVAC)
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