DTC U0100: Lost Communication with ECM / PCM "A"; 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" [08/2019 - ]: Procedure

1. Clear the DTCs (Refer to DTC CHECK / CLEAR [08/2015 - ] ).
2. Check for DTCs (Refer to DTC CHECK / CLEAR [08/2015 - ] ).
   RESULT
   
   

   Result	Proceed to
   DTC U0100, U0126, U0129 and U0142 are not output	A
   DTC U0100, U0126, U0129 and/or U0142 is output	B

   HINT: 

   • If CAN communication system DTCs are stored, they may also be stored for other systems.
   • If the CAN communication system has been inspected and repaired, the DTCs will not be output when rechecking for DTCs.
   • If these DTCs are output frequently, duplicate the conditions that cause the problem symptoms and perform the inspection again, even though the DTC was not output when rechecking for DTCs (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - 08/2020] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2020 - 08/2021] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2021 - 08/2022] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2022 - ] ).

Result: 

A 

USE SIMULATION METHOD TO CHECK 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - 08/2020] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2020 - 08/2021] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2021 - 08/2022] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2022 - ] )

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM 

(Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] )