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5. A/C INPUT/OUTPUT DIAGRAM
Below diagram shows the input/output mapping between the components of FATC A/C and A/C
controller briefly.
▶ A/C compressor control by engine ECU
In case of current vehicle models, the system turns ON or OFF the compressor switch according to the
refrigerant pressure, ambient temperature and condenser temperature to protect the A/C circuits.
However, for the vehicles equipped with DI engine, the engine ECU turns off the A/C compressor unde
r
below conditions, including those above.
Coolant temperature: 20℃ or less
Coolant temperature: 115℃ or more
For approx. 4 sec. after starting the engine
Engine speed: 650 rpm or less
Engine speed: 4,500 rpm or more
During abrupt acceleration for the vehicle equipped with manual transmission 1.
2.
3.
4.
5.
6.
