When I fire up the IID BT tool, for a moment before it shows the normal main menu it shows the subject error.

Is there any diagnostics I can do with the IID tool to help me locate the source of the failure on the MS CAN bus loom?

I know its a hub and spoke arrangement, and I am happy to work with a multimeter, but if the IID tool can show me which MS CAN bus ecus it can see that might help me start looking?

That's rather technical, speak to Pat at GAP, he is very helpful...  Pete
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2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-

Thanks Pete. I thought that the GAP website said that ffrr forum was the correct place to seek feedback from GAP, as they had closed down their forums in favor of these ones?

Yes, you are right but I've never heard of that fault before so think you need more help than you will get here...

Drop Pat a detailed message on your issue and I'm sure he'll help if he can...

https://www.fullfatrr.com/forum/member-patgapinnov.html

 Pete
__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-