•  The PCM determines the engine operation conditions based on input signals from the sensors, calculating the optimum fan motor rotation speed as the fan motor drive duty ratio, and sends a signal to the fan control module to control the cooling fan rotation speed.

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1	ECT sensor
2	MAF sensor
3	APP sensor No.1, No.2
4	CKP sensor
5	BARO sensor
6	Refrigerant pressure switch (middle)
7	Refrigerant pressure switch (high and low)
8	Ignition switch
9	Vehicle speed signal
10	Instrument cluster (A/C on request signal)
11	IAT sensor
12	Fan control module
13	Cooling fan relay