Subject	Testing Aux. Fan on a TT.
Posted by	MixManMash on July 13, 2012 at 8:29 AM
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Message	In my quest to diagnose a slight overheating condition, I thought I would have a look at the aux fan. In Nistune, using Consult Active Tests, I manually forced the "Fan Speed Low" and the fan came on via the radiator fan relay. I then manually forced the "Fan Speed High" and nothing. This should typically trigger the Sub Relay, but no click. I even tried swapping relays and nothing. So my question is, does this trigger in Nistune not work on our cars? If it does work, why won't my ECU trigger the relay? Is it possible that I have an NA ECU when I really need a TT ECU?
Follow Ups	Testing Aux. Fan on a TT. - MixManMash 08:29:36 07/13/12 Isn't there a temp sensor input for High Speed activation? (n/m) - Gordo 93TT Daytona 11:27:39 07/13/12 It goes off the coolant temp sensor. - MixManMash 11:56:37 07/13/12 Is the relay getting power? Is the other flap getting it - fuzzymonkey 11:56:31 07/13/12 The relay coil is not getting energized. Tried a diff relay. - MixManMash 12:02:41 07/13/12 is it actually a TT ecu or NA ecu? - Dane (Houston) 12:51:49 07/13/12 Thanks for your help! I certainly appreciate it. - MixManMash 13:15:52 07/13/12 Re: Thanks for your help! I certainly appreciate it. - Dane (Houston) 11:13:28 07/15/12 So I ran the p/n. - MixManMash 12:52:30 07/18/12 Re: Thanks for your help! I certainly appreciate it. - Dane (Houston) 14:56:50 07/15/12
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