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Home >> Infiniti >> 2004 >> FX35 RWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control System >> DTC P1217 Engine Over Temperature >> Description >> Cooling Fan Control
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Cooling Fan Control

Fig 1: Identifying Sensors Providing ECM Inputs For Cooling Fan Control
G00727196Courtesy of NISSAN MOTOR CO., U.S.A.

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].

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