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0 © 200528 1-41 DMCI engine management system TECHNICAL DATA XF105 series (1) Measured with plus probe on pin B60 and minus probe on pin C16 i400848 0 2 4 6 U (V) Type of speed sensor Hall Speed sensor output signal Square-wave signal 5 V Frequency at 1000 rpm fan speed 100 Hz Pulses per fan revolution 6 U (V) 15 20 25 10 5 0 i400847 Fan clutch control earth-controlled duty cycle (0 - 100% Duty cycle voltage level 24 V Frequency of duty cycle signal 2 Hz Duty cycle high Decreasing fan speed Duty cycle low Increasing fan speed 5 4 3 1 2 i 400456 1. Fan speed sensor output signal 2. Fan speed sensor earth 3. Fan clutch control signal 4. Fan clutch supply voltage 24V 5. Fan speed sensor supply voltage 5V |