Ford Focus Forum, Ford Focus ST Forum - View Single Post - does the 2012 focus ecu need to have ground
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Old 11-10-2012, 12:25 AM   #2
iminhell
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Yes it has to have a ground.

I don't believe it's grounded through the case though.


If you're having start issues and have removed the ECU from it's home, odds are something you removed/moved during that process is causing the no start.
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