Manuals through 2025 now available!
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LEMON is the spiritual successor to CHARM, I recommend you try it!
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Radiator Cooling Fan Control Module: Description and Operation
System DescriptionCOOLING FAN CONTROLThe ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, air conditioner high pressure signal, and air conditioner
ON signal. The control system has 3-step control [HIGH/LOW/OFF].
When both air conditioner switch and high pressure switch are
"ON", cooling fan operates at "HIGH" speed.
