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      08-02-2008, 03:09 PM   #108
Private First Class

Drives: e92m3 f25x3 e71x6
Join Date: May 2008
Location: VA

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Wiring Diagrams at last!

Here are some sample wiring diagrams in PDF format.
As has already been said, the factory-fitted 6FL option uses both the TCU unit and the ULF-SBX-High unit in parallel. The latter box is only there to provide the 6FL capability (so presumably its other capabilities are ignored or are duplicated by the TCU).
I have included the standard (non-High) ULF-SBX diagram for completeness.
The power wiring schema is in separate diagrams which I can provide if anyone is interested.
It does seem that the European 6FL retrofit works in a different fashion to this.
For reference these diagrams are from 09/2007.
Attached Images
File Type: pdf E90 Interface Box ULF-SBX WD.pdf (43.0 KB, 689 views)
File Type: pdf E90 TCU Telematics Control Unit WD.pdf (49.9 KB, 575 views)
File Type: pdf E90 ULF-SBX-H Interface Box High WD.pdf (48.1 KB, 617 views)