DTC U0073: Control Module Communication Bus "A" Off; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0101: Lost Communication with TCM; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0155: Lost Communication with Instrument Panel Cluster (IPC) Control Module [09/2017 - ]: Procedure

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [09/2017 - 05/2019] , or refer to DTC CHECK / CLEAR [05/2019 - ]

   for Single Beam Headlight:

   Body Electrical > HL AutoLeveling > Clear DTCs 

   for Triple Beam Headlight:

   Body Electrical > AFS > Clear DTCs 

2. Check for DTCs.

   Refer to DTC CHECK / CLEAR [09/2017 - 05/2019] , or refer to DTC CHECK / CLEAR [05/2019 - ]

   for Single Beam Headlight:

   Body Electrical > HL AutoLeveling > Trouble Codes 

   for Triple Beam Headlight:

   Body Electrical > AFS > Trouble Codes 

   OK

   DTCs U0073, U0100, U0101, U0126, U0129, U0142 and U0155 output does not occur.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2017 - 05/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [05/2019 - 10/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2019 - 07/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [07/2020 - ] 

Result: 

NG 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2017 - 05/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [05/2019 - ]