DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U1104: Lost Communication with Driving Support ECU: Procedure

CHECK FOR DTC (CAN COMMUNICATION SYSTEM)
1. Clear the DTCs. Refer to DTC CHECK / CLEAR [06/2012 - ] .
2. Check for DTCs. Refer to DTC CHECK / CLEAR [06/2012 - ] .
  OK
  
  CAN communication system DTCs are not output.
NG → See step 3

OK → See step 2
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2012 - ]
GO TO CAN COMMUNICATION SYSTEM. Refer to DIAGNOSIS SYSTEM [06/2012 - ]