club.liberty.asn.au

bigBADbenny wrote:So we might focus on the high speed canbus network, here’s a great video series that focuses on the diagnostics.
Bear in mind the age of your vehicle puts it in the midrange of canbus development, eg it’s not a single network: it has high and low speed canbus, but neither does it have a gateway module.

So we know it’s a high speed can issue, it’s the network between the ecu, bcm and abscm.
As per the video, we can use the wiring diagrams to check the layout of that canbus, see if one single fault is bringing down the house of cards.

We need to map the canbus well before doing any testing since the layout and connected modules dictate the scope of diagnostics.
In all the “er hc” posts on various Subaru forums, the issue is almost always a ground, but which one exactly?
We’ll have more clues once we map the canbus. Eg there might be specifically related grounds.
I’m looking at the second video in the series atm, plus getting to those fsm diagrams but starting with C0140 diagnostics.
https://www.youtube.com/watch?v=YbF3idCk4EQ