Eaton Auto Shift will not go into Gear

Hello everyone. Here is brain teaser for you people who have worked on these transmissions.
I have a Eaton 3 pedal Auto shift transmission. It will not go into gear. Here is the problem, what happened, and what it is now doing.

The truck quit shifting, and had to be towed to the shop. The service light was on, and we were getting shift rail error codes. We replaced the main wiring harness for the transmission as it was old, and replaced with the updated version from Eaton. We doubted this would fix the problem, but felt it needed to be done. Next we replaced the XY shifter with a new genuine Eaton ( correct part number was used). Now the display went from dashes, and we had a "N" for neutral on the display. We were ready for the road ! Hold on Amigos, the display on the key pad would flash in the D mode, and the N for neutral on the display stayed solid N with no down or up arrows.

We had calibrated the new XY shifter several times during installation as per Eaton instructions, so we removed the XY shifter to verify correct operation in the cycle. it went side to side and forward and back, than to center.
Reinstalled the XY shifter, re-calibrated, and still the same problem. We are getting no new codes, all codes shown inactive. Tested the input speed shaft sensor and tested good (2k ohms). Checked the input shaft, pushed on the clutch pedal, and input shaft is not turning. replaced with new input speed shaft sensor, knowing they will test good, but have weak magnets. Still showing solid N with no up or down arrows. Forgot to mention the brake lights work, and their is only one sensor in this truck according to Volvo.

Have spoken with Eaton, and they have not really been much help. Anyone who has ran into this before, your advice would be greatly appreciated.

Thank you

 

Dune, kind of next in line, but hate to change parts out that are not bad, was kind of hoping for some direction on this thing. Thanks