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Climate control fuse problem... S90-V90

posted by  CW on  Sun May 14 15:42 CST 2006
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last visit: Tue Feb 5 13:37 CST 2008
[RELATED]

Hey guys,

Ok, I've finally gotten a bit farther with the fuse problem for the ECC fan. I have confirmed that the fan is not the problem by unplugging it, installing a fuse and turning the fan speed selector. The 30A fuse melted in a short amount of time. So, I looked at the wiring diagram and discovered that the next thing to try was to unplug the ECC power unit. I did so, installed a new fuse and then turned the selector. Nothing happened to the fuse. So, from what I can see, this means the the ECC power unit is malfunctioning or it has a poor ground. Now, I don't know a whole lot about electronics so I wanted to hear what you guys think.

Oh, I don't understand what the Motronic (MFI) system control module has to do with the ECC system, it's connected to the ECC power unit (pink/white wire). I don't think it's the problem, but maybe?

Also, the pink/white wire has been repaired at some point before for an unknown reason and it currently has a small spot on it that is missing the insulation.

Thanks again for any help and/or ideas!
--
Chris. Halifax N.S. '98 V90 > 195K km, '94 964 > 88K mi. SOLD: '91 745T and '91 745 NA (I miss both of them!).






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