Some success on various fronts...

I have tested both T & E side in bootstrap mode. The tester connector pins the same way for both and I have no problems running code on them. When I got the Tside up, I wrote some code to access the driver chips. In the system the Tside monitors all the fault conditions in the drivers and reports DTCs, sets/clears software flags for the conditions found.

For a while I have been looking into limp home mode as it relates to some of the 28 pin plccs on the Eside. I have found that backup mode, commanded by the field service enable pin (blue 20) will cause this. You can use a 3.9K between the FSE pin and ground to command this.

-Tom