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Home >> Nissan-Datsun >> 2003 >> Sentra SE-R, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 403 (Engine Control System) >> DTC P1217: Engine Over Temperature >> Description >> Component Description >> Cooling Fan Speed Control Solenoid Valve

Cooling Fan Speed Control Solenoid Valve

WARNING: This page is about a different car, the 2004 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

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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