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Home >> Infiniti >> 2004 >> Q45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P1217: Engine Over Temperature >> Description >> Component Description
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Component Description

Cooling Fan Speed Control Solenoid Valve 

The cooling fan speed control solenoid valve uses a ON/OFF duty to control the pressure of the cooling fan fluid from the cooling fan pump. This solenoid valve is moved by ON/OFF pulse from the ECM. The longer the ON pulse is sent to the solenoid valve, the lower speed the cooling fan operates.

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