Wondering if anyone out there has taken on troubleshooting the 2 axle SLS controller? Hoping there is a schematic of the controller with internal system specs as far as voltage and resistance ranges. If that info isn't available does anyone have a shop they've sent there controller in to for repair?

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2005 Titanium Silver X5 4.8is (DD winter) * 2001 Steel Blue 750iL (DD summer) * 2001 Ford Excursion 7.3 L <> 2005 X5 3.0 * 2003 X5 4.4i * 2009 X3 3.0 * 2009 X5 3.0 * 2007 Toyota Avalon Limited