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fertooos wrote: ↑Sat Mar 14, 2020 2:35 am The ScangaugeD looks like that would do a lot of the same and be a useful tool (of course, not at the moment for us)!

So I'm looking for any help with what may have happened, how to fix this / test and where to physically locate fuses and ECM for transmission, or any other thoughts?

Matt and fertooos
There are 6 plug-in relays and 2 12V fuses in the Allison VIM, (vehicle interface modual).

The VIM is a black box about 5 inches square and looks like this:

In my '96 Sahara the VIM is mounted on the front firewall, up-under the dash, forward of the center cabinet... but it can be most anywhere in the coach.

With the cover removed the VIM looks like this:

There are two modules the ECU on the engine and VIM module that controls the transmission. If you look at this presentation you can see some further pictures and explanations, although Mel has posted the essential information.

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