TDM CAN communication failure

Check for 60 ohms at each end of harness:

TDM
CA414-13 v-comm
CA414-12 CAN term
CA414-11 CAN H
CA414-10 CAN L

Access 3
CA403-10 V-comm
CA403-1 V-comm (I suspect this should be CAN TERM & manual is incorrect)
CA403-9 CAN H
CA403-2 CAN L

Check continuity of CAN lines, plug to plug

If all good, renew TDM