TDM CAN Failure
Check each end of the can harness for 60ohms (CA414-11 to CA403-9, CA403-1 to CA414-10) Make sure the harness is still plugged in to the modules on both sides when testing.
If 60ohms is present, check the pins for damage or poor contact.
If 60ohms is not present but there is continuity in the cable, replace the TDM. If they test OL then the harness needs to be replaced.