Hyundai Santa Fe: Cooling Fan. Description and Operation - Cooling System - Engine Mechanical SystemHyundai Santa Fe: Cooling Fan. Description and Operation

Description

Control the cooling motor voltage in according to the duty(300Hz) of ECM.
[ECU → PWM Input Signal(SI : 300Hz)]

SI Duty
Motor Voltage (V)
 
10%
0

30%
4.1
± 0.65
60%
8.2
± 0.66
70%
9.57
± 0.67
90%
12.5


[Cooling Fan Operation Condition]
A/C Switch
A/C Pressure (Kgf/cm² G)
Vehicle Speed (Km/h)
Coolant Temp (°C)
Duty (%)
OFF

V < 45
98 above
35
45 ≤ V < 80
101 above
40
80 ≤ V
105 above
80
ON
A/C Pressure < 6
ALL
105 above
90
6 ≤ A/C Pressure < 12
V < 45
82 above
30
45 ≤ V < 80
96 above
40
80 ≤ V
96 above
60
12 ≤ A/C Pressure < 15.5
V < 45
101 above
70
45 ≤ V < 80
-30 above
40
80 ≤ V
82 above
60
15.5 ≤ A/C Pressure
V = 0
-30 above
60
0 < V
-30 above
90


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