, in other thread (Software and map update), you mentioned idea of connecting directly to CAN somewhere on "car side" of CAN (say at BCM) - wonder if that is safe to do (especially for proxi), are you convinced? Have anybody tried that?
In your diagram, you can see the CAN networks also end op on the Bodycomputer (M001 ?), located in the passenger footwell....
See also network diagrams I posted earlier in this thread.
As CAN is a simple bus network, I see no reason why you couldn't just tie into the network there, bypassing the SGW. Just buy an OBD expansion cord, cut of one of the plugs on this and connect the wires to the CAN network to create your own "private" OBD bus connector. This way you can leave the SGW intact, no one the wiser
I think most/all CAN networks go through the bodycomputer, although you might have to hunt for 1 or 2 of the special ones
The OBD plug is only that, a dumb plug, so no impact on proxy alignments etc.
Haven't tried it myself, as I have no need for it (an advantage of having an earlier model giulia
), however, if you look at the info on the MES site you can see there is also mention of people connecting to the bodycomputer.
You can see required connections for standard OBD here:
From MES site:
2018 MODELS WARNING: Some 2018 vehicles have a "security gateway" module (SGW). The SGW module blocks any diagnostic tool from executing commands on the vehicle (like actuators, procedures and even clearing of DTCs). It is not possible to unlock the SGW module with Multiecuscan. The only diagnostic tool that can unlock full access to the affected vehicles is the factory tool. Another option is to physically connect the diagnostic tool to CAN lines behind SGW module.
The 2018 models with confirmed presence of SGW are: 500X/Renegade, 500L MCA, Doblo, Giulia/Stelvio. The module is also present in some late 2017 vehicles.
You can run the SCAN function (which is also available in the FREE version of Multiecuscan) to check if your vehicle has SGW module.