(DG) Auto Pilot Failure

[davidroger527]

I think I’ve narrowed it down to the ACU 100. All other devices work correctly and display on the MFD under devices and update successfully. Except the ACU is not listed under devices and update page on the MFD, so I’m not able to update it. The ACU has a green light and I checked all the connections. Everything appears to be normal. I also swapped ports with another device on the network backbone and still the ACU does not show up under devices on the MFD. Could it be the ACU is bad even though it has a green light? Or maybe the plug harness for the ACU is bad? The ACU is mounted in a clean/dry location and is only 3 years only. Any suggestions?