Hyundai Genesis: Cooling System / Cooling Fan Description and Operation

Description
The cooling fan controlsx the cooling fan motor voltage depending on the duty output from the ECU (Freq.: 300Hz).
[Signal from the ECU to the PWM (SI: 300Hz)]

SI Duty
Motor Voltage (V)
Variation (V)
10%
0
±0.5
30%
4.1
60%
8.2
70%
9.57
90%
more than 12.5
-

[Operating condition of the cooling fan]
A/C switch
A/C pressure [kgf/cm? G (psi G)]
Vehicle speed
[km/h (mph)]
Water Temperature
 [°C (°F)]
Duty (%)
OFF
?
V < 45 (28)
98 (208.4) or above
35 or above
45 (28) ? V < 80 (49.7)
101 (213.8) or above
40 or above
80 (49.7) ? V
105 (221) or above
80 or above
ON
A/C pressure < 6 (85.3)
All
105 (221) or above
90 or above
6 (85.3) ? A/C pressure < 12 (170.7)
V < 45 (28)
82 (179.6) or above
30 or above
45 (28) ? V < 80 (49.7)
96 (204.8) or above
40 or above
80 (49.7) ? V
96 (204.8) or above
60 or above
12 (170.7) ? A/C pressure < 15.5 (120.5)
V < 45 (28)
101 (213.8) or above
70 or above
45 (28) ? V < 80 (49.7)
 - 30 (- 22) or above
40 or above
80 (49.7) ? V
 82 (179.6) or above
60 or above
15.5 (120.5) ? A/C Pressure
V = 0
 - 30 (- 22) or above
70 or above
0 < V
 - 30 (- 22) or above
90 or above

Cooling Fan Components and Components Location
Components 1. Cooling fan shroud2. Cooing fan3. Cooling fan motor4. Cooling far rear cover5. Cooling fan controller (PWM)6. Reservoir tank ...

Cooling Fan Specifications
Specifications [Cooling fan control (PWM)] ItemsPerformance specMAX, load current consumption (12V)23.3 + 10% AInputCommunication frequency300 ± 5%Duty10, 30 ~ 90 % Voltage levelHImore than 0.7 V ...

Other information:

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