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Home >> Nissan-Datsun >> 2007 >> Altima Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Introduction (Qr25DE) (Except For CALIFORNIA) >> Cooling Fan Control >> System Description >> System Description >> Notes
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System Description: Notes

ECM controls cooling fan speed corresponding to vehicle speed, engine coolant temperature, refrigerant pressure, air conditioner ON signal. Then control system has 3-step control [HIGH/LOW/OFF].

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