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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 743 (Engine Controls - Theory & Operation - 6.0L Diesel (99P E-Series & 99P F450/550)) >> Diesel PCM Inputs >> Fan Speed Sensor (FSS)

Fan Speed Sensor (FSS)

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The fan speed sensor is a Hall effect sensor integral to the visctronic drive fan (VDF). The PCM will monitor the sensor input and control the VDF speed based upon engine coolant temperature (ECT), transmission fluid temperature (TFT) and intake air temperature (IAT) requirements. When an increase in fan speed for vehicle cooling is requested, the PCM will monitor the FSS signal and output the required pulse width modulated (PWM) signal to a fluid port valve within the VDF.

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