Cooling Fan: Description
WARNING: This page is about a different car, the 2013 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.
The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refrigerant pressure, and air conditioner ON signal. The control system has 4-step control [HIGH/MIDDLE/LOW/OFF].
COOLING FAN MOTOR
The cooling fan operates at each speed when the current flows in the cooling fan motor as per the following.
| Cooling fan speed | Cooling fan motor terminals | |
|---|---|---|
| (+) | (--) | |
| Middle (MID) | 1 | 3 and 4 |
| 2 | 3 and 4 | |
| 1 and 2 | 3 | |
| 1 and 2 | 4 | |
| High (HI) | 1 and 2 | 3 and 4 |
The cooling fan operates at low (LOW) speed when cooling fan motors-1 and -2 are circuited in series under the middle speed condition.
Refer to "SYSTEM DIAGRAM ".