Giulietta CAN-BUS fault and other issues, at a dead end

[dead-luigi]

I have a similar issue to the one mentioned here:-

https://www.alfaowner.com/threads/reset-can-bus.1202952/?post_id=17769120&nested_view=1&sortby=oldest

I can't get rid of this CAN-BUS fault and I don't know how proceed.

I can connect to all the modules using MES and the Yellow cable, although in my case several of them report the CAN-BUS error. The actual fault is the dynamic control switch and neutral position sensor. The Neutral sensor has been replaced, but I can't do learning, as it reports a value out of range. Doing a Proxy alignment reports that it's already configured properly.


I think I may have either a BCM issue, or a wiring fault, or both, but I'm struggling a little to know where to look. Can't find any wiring diagrams to aid my quest. 

Not sure if the CAN fault is causing the Neutral Position Sensor and Dynamic Control switch faults or if they are separate.



Attached MES scans from before and after the Neutral Sensor replacement

Help gratefully received