DTC U0122: Lost Communication with Vehicle Dynamics Control Module: Procedure

CHECK CAN COMMUNICATION SYSTEM
1. Select "Bus Check" from the "System Select". Refer to DIAGNOSIS SYSTEM
2. Select "Communication Malfunction DTC" from the "Bus Check" screen, and then select "Enter". Refer to DIAGNOSIS SYSTEM
  OK
  
  CAN communication system DTC is not output.
NG → See step 3

OK → See step 2
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING
GO TO CAN COMMUNICATION SYSTEM. Refer to DIAGNOSTIC TROUBLE CODE CHART