Electric fan does not come on with A/C
My 2004 SE does not run excessively hot, but I have noticed that external electric fan does not come on when the A/C is on. Being that I am in South Carolina, the A/C is on most of the time. Any thoughts and /or am I missing something obvious? BTW, the fan itself spins freely to the touch.
Thanks, JEFIII
Thanks, JEFIII
Thanks to all who responded. I checked the fuse and the relay...all was good. When I start the vehicle in the morning with the A/C on the fan comes on initially then turns off after about a minute or two. Is this normal or should it be on whenever the A/C is on?
Thanks again, JEFIII
Thanks again, JEFIII
Thanks to all who responded. I checked the fuse and the relay...all was good. When I start the vehicle in the morning with the A/C on the fan comes on initially then turns off after about a minute or two. Is this normal or should it be on whenever the A/C is on?
Thanks again, JEFIII
Thanks again, JEFIII
"While the A/C system is on, operation of the electric engine cooling fan, to assist refrigerant condenser operation, is
determined by a combination of vehicle speed and external air temperature. When cooling fan operation is required,
the ATC ECU outputs a cooling fan request to the ECM, which then energises the cooling fan relay. The cooling fan
request is output if vehicle speed is 80 km/h or less while the external air temperature is 28 °C (82 °F) or more. The
request is cancelled, and the cooling fan switched off, if either the vehicle speed increases to 100 km/h, or the external
air temperature decreases to 25 °C (77 °F)"
Depends
"While the A/C system is on, operation of the electric engine cooling fan, to assist refrigerant condenser operation, is
determined by a combination of vehicle speed and external air temperature. When cooling fan operation is required,
the ATC ECU outputs a cooling fan request to the ECM, which then energises the cooling fan relay. The cooling fan
request is output if vehicle speed is 80 km/h or less while the external air temperature is 28 °C (82 °F) or more. The
request is cancelled, and the cooling fan switched off, if either the vehicle speed increases to 100 km/h, or the external
air temperature decreases to 25 °C (77 °F)"
"While the A/C system is on, operation of the electric engine cooling fan, to assist refrigerant condenser operation, is
determined by a combination of vehicle speed and external air temperature. When cooling fan operation is required,
the ATC ECU outputs a cooling fan request to the ECM, which then energises the cooling fan relay. The cooling fan
request is output if vehicle speed is 80 km/h or less while the external air temperature is 28 °C (82 °F) or more. The
request is cancelled, and the cooling fan switched off, if either the vehicle speed increases to 100 km/h, or the external
air temperature decreases to 25 °C (77 °F)"
My A/C fan seems to turn on at lower temperatures when starting up. Not saying it's normal, but it is what happens.


