Hyundai Genesis: Cooling System / Cooling Fan Description and Operation
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
|
Components
1. Cooling fan shroud2. Cooing fan3. Cooling fan motor4. Cooling far rear cover5. Cooling fan controller (PWM)6. Reservoir tank
...
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:
Description
The Alternator has built-in diodes, each rectifying AC
current to DC current, to supply DC current to the alternator “B”
terminal.
In addition, the charging voltage of this alternator is regulated by the battery voltage detection system.
The alternator is regulated by the b ...
Removal
•
Use fender covers to avoid damaging painted surfaces.
•
To avoid damaging the cylinder head, wait until the engine
coolant temperature drops below normal temperature (20°C [68°F])
before removing it.
•
When handling a metal gasket, take ...