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Home >> Nissan-Datsun >> 2014 >> Altima Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Introduction) (Qr25DE) >> System Description >> Component Parts >> Cooling Fan

Cooling Fan

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 operates at each speed when the current flows in the cooling fan motor.

Refer to "COOLING FAN CONTROL: SYSTEM DESCRIPTION (WITH AUTOMATIC AIR CONDITIONER) " for cooling fan operation.