DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0163: Lost Communication with Navigation Control Module; DTC U023A: Lost Communication with Front Camera Module; DTC U1104: Lost Communication with Driving Support ECU [12/2017 - 08/2019]: Procedure

1. Check if CAN communication DTCs are output.

   Refer to DIAGNOSIS SYSTEM [12/2017 - 08/2018] , or refer to DIAGNOSIS SYSTEM [08/2018 - 08/2019]

   Result

   Result	Proceed to
   CAN communication DTCs are output.	A
   CAN communication DTCs are not output.	B

Result: 

A 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2015 - 08/2019] 

Result: 

B 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - 03/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [03/2018 - 08/2019]