Cooling Fan Description and Operation

Description

The cooling fan controls the voltage of the cooling fan motor according to the ECM output signal (frequency: 300 Hz). [Signal from ECM to PWM (Frequency: 300 Hz)]

Duty Cycle	Motor Voltage (V)	Type (B)
10%	0	±0,5
30%	4.1
60%	8.2
70%	9,57
90%	Greater than 12.5	-

[Cooling Fan Operating Condition]

A/C Switch	A/C Pressure [kgf/cm² G (psi G)]	Vehicle Speed [km/h (mph)]	Coolant Temperature [°C (°F)]	Duty (%)
OFF	?	Less than 45 (28)	98 (208.4) or higher	35 or higher
		45 (28) ? V < 80 (49,7)	101 (213.8) or higher	40 or higher
		80 (49.7) ? B	105 (221) or higher	80 or higher
ON	A/C Pressure less than 6 (85.3)	All	105 (221) or higher	90 or higher
	6 (85.3) ? A/C Pressure less than 12 (170.7)	Less than 45 (28)	82 (179.6) or higher	30 or higher
		45 (28) ? V < 80 (49,7)	96 (204.8) or higher	40 or higher
		80 (49.7) ? B	96 (204.8) or higher	60 or higher
	12 (170.7) ? A/C Pressure less than 15.5 (120.5)	Less than 45 (28)	101 (213.8) or higher	70 or higher
		45 (28) ? V < 80 (49,7)	- 30 (- 22) or higher	40 or higher
		80 (49.7) ? B	82 (179.6) or higher	60 or higher
	15.5 (120.5) ? A/C Pressure	B = 0	- 30 (- 22) or higher	70 or higher
		0 < B	- 30 (- 22) or higher	90 or higher