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Home >> Infiniti >> 2004 >> FX35 AWD V6-3.5L (VQ35DE) >> Repair and Diagnosis >> Relays and Modules >> Relays and Modules - Cooling System >> Radiator Cooling Fan Control Module >> Description and Operation
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Radiator Cooling Fan Control Module: Description and Operation

Cooling Fan Control

Cooling Fan Control:




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 Operation:




Cooling Fan Operation

Cooling Fan Relay Operation:




Cooling Fan Relay Operation

Cooling Fan Motor




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

The cooling fan operates at low (LOW) speed when cooling fan motors-1 and -2 are circuited in series under middle speed condition.
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