So likme the various OBDII programming systems can you program out the electic PS mondule in the same fashion as a Tazon programmer would? this would turn off the code and basicly kill the circut to the data bus. In this way you can taylor the program to include or exclude components or modules that are not required.
Just a thought from the cheap seats....
Heading to PA this weekend if you want to test you beast out a bit...we have at least one trailer coming if problems arrise.
Aww this is a really fun question to dive into! We actually have already used a Tazer Mini to tell the PCM not to expect communications from the power steering module. The quirk with this particular issue is that it was not a faulting module that was causing the issue, rather errant voltage on the bus.
Since the canbus physical layer is shared and accessed concurrently between all nodes on the bus, rather than a dedicated circuit to each module, impacts to the shared broadcast domain impacts all things on the network. A good analogy would be radios - each radio acts a bit like a module on the canbus, when things are operating well - everyone can communicate clearly using a shared frequency. You, and the other radio users may have a pre-defined protocol on how to speak on the shared frequency, as to not interfere with one another, and everyone is happy. Now if someone were to show up with an excessively high powered transmitter, and just flood the frequency with energy, the receiving radios would likely not be able to overcome the jamming effect of the high powered transmitter.
In this scenario - the modules expect to communicate on the shared bus using about 2.6v of energy. However with a short to voltage, the 12v system was effectively "jamming" the other modules from communicating (at least that is my theory).
Here is actually a Youtube video of someone testing this theory
As for this weekend - we will be closing on a new house next Friday and are packing / getting the current house cleaned up, and I still need to get those darn sliders trimmed up, welded, painted, and mounted.... Not enough time in the day