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So recently i got the P480 code. Fan was running non stop on high. When i turned the car off it kept running on high so i pulled the fuse and went to bed. In the morning i threw in the fuse and the fan didn't run.....turned the car on (Cold) and after a few seconds went to high again. Turned off the car and it ran on high for a while then shut off. So i had to do a bunch of work anyways so i pulled the fan assembly, here are the steps i've done so far: AC fan works fine, this is only the main fan. If i power the fan without connecting to the car (the small wires arent receiving signal) the fan stays off (which i think is good). If i measure the car harness side, it shows the standard 12v and 0v on the plug. The signal wires show ~.3V and 12V My guess was the 12v was the cause of the fan running. To rule out the temp sensor i unplugged it, but the 12v signal was still there. plugged the fan in anyways and it was still running. I did notice when it was unplugged the car only shows as "normal" temp, it didn't peg to the top like i'd think it would. Finally i found that F10 is the signal (Fan Final Stage) Anyone have the wiring diagram or know where this 12v is coming from? I'm 99% positive it does NOT come from the main coolant sensor. And i'm also 99% my fan is working correctly, but i don't have the "before" voltage check to know for sure. Any help would be appreciated. THanks