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CARAVAN, TOWN & COUNTRY, & VOYAGER The dual, 2-speed cooling fans operate simultaneously and are turned on when coolant temperature becomes excessive or A/C head pressure indicates A/C operation. Fan should not operate during engine cranking. With A/C off, cooling fans turn on or off when coolant temperature sensor signals PCM that coolant temperature has reached a specified temperature. Regardless of vehicle speed, fans will turn off when coolant temperature drops. COOLING FAN MOTOR NOTE: If fan motor is noticeably overheated, system voltage may be too high. Check charging system. Disconnect cooling fan motor harness connector. Observe correct polarity. Connect battery voltage to fan motor harness connector terminals. See Fig. 1 or Fig. 2 . If cooling fan motor fails to operate, replace fan motor.