C5 Electric Cooling Fan problem
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From: Conroe Texas
C5 Electric Cooling Fan problem
I recently changed my water pump and air conditioning compressor so I had the radiator, electric Fans, and condenser removed. I cleaned them all really good and reinstalled them. Now I cannot get my electric fans to come on. I noticed one of my maxi fuses was blown so I replaced it. I then tried again and still nothing even at 225 degrees. I jumped the high speed and low speed fan relays and everything comes on and runs good, I just cannot get the "Whatever" to tell the relay(s) to close to turn on fans. Temp in DIC reads correctly and all seems well, just cannot get fans to come on at all by themselves. What do I look for next. Please Help.
Mike
Mike
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Joined: Jan 2007
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From: Dyer, IN
I recently changed my water pump and air conditioning compressor so I had the radiator, electric Fans, and condenser removed. I cleaned them all really good and reinstalled them. Now I cannot get my electric fans to come on. I noticed one of my maxi fuses was blown so I replaced it. I then tried again and still nothing even at 225 degrees. I jumped the high speed and low speed fan relays and everything comes on and runs good, I just cannot get the "Whatever" to tell the relay(s) to close to turn on fans. Temp in DIC reads correctly and all seems well, just cannot get fans to come on at all by themselves. What do I look for next. Please Help.
Mike
Mike
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Joined: Apr 2007
Posts: 93
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From: Conroe Texas
I haven't charged the AC system up yet
and it was the 30 amp maxi fuse nearest the driver compartment. I put a new fuse checked continuity and all is great. ?I jump the relays and fans work fine. I don't exactly what the dual relay or coolingfan3 relay and fuse is for but I checked both of them and they are good to go also. What sends the signal to the cooling fan relays to tell them to close to turn on the fans?
Mike
Mike
Tech Contributor
Joined: Jan 2007
Posts: 19,465
Likes: 1,167
From: Dyer, IN
and it was the 30 amp maxi fuse nearest the driver compartment. I put a new fuse checked continuity and all is great. ?I jump the relays and fans work fine. I don't exactly what the dual relay or coolingfan3 relay and fuse is for but I checked both of them and they are good to go also. What sends the signal to the cooling fan relays to tell them to close to turn on the fans?
Mike
Mike
The cooling fans are controlled by the PCM, which provides a ground(s) to the appropriate relays depending on temperature, A/C pressure, etc. Based on your description, I assume that it was fuse #46, that was found blown.
Tech Contributor
Joined: Jan 2007
Posts: 19,465
Likes: 1,167
From: Dyer, IN
Perhaps it's the phrase you used. I used "cooling fans", and came up with the following.
http://forums.corvetteforum.com/c5-t...ne-doesnt.html
http://forums.corvetteforum.com/c5-t...-question.html
http://forums.corvetteforum.com/c5-t...-fan-help.html
http://forums.corvetteforum.com/c5-t...ling-fans.html
http://forums.corvetteforum.com/c5-t...chematics.html
http://forums.corvetteforum.com/c5-t...coming-on.html
http://forums.corvetteforum.com/c5-t...way-speed.html
http://forums.corvetteforum.com/c5-t...ne-doesnt.html
http://forums.corvetteforum.com/c5-t...-question.html
http://forums.corvetteforum.com/c5-t...-fan-help.html
http://forums.corvetteforum.com/c5-t...ling-fans.html
http://forums.corvetteforum.com/c5-t...chematics.html
http://forums.corvetteforum.com/c5-t...coming-on.html
http://forums.corvetteforum.com/c5-t...way-speed.html
