ELECTRICAL FAN CONTROL BLOCK DIAGRAM [LF]
B3E014018881T41
• The PCM determines the engine operation conditions based on input signals from the sensors, calculating the optimum fan motor rotation speed as the fan motor drive duty ratio, and sends a signal to the fan control module to control the cooling fan rotation speed.
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1
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ECT sensor
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2
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TP sensor
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3
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Vehicle speed signal (CAN)
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4
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A/C on request signal
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5
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Battery voltage
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6
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Fan control module
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