DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0122: Lost Communication With Vehicle Dynamics Control Module [08/2019 - ]: Procedure

RECONFIRM DTC

Clear the DTCs.
Refer to DTC CHECK / CLEAR [08/2019 - ]

Check if the same DTCs are output.

Refer to DTC CHECK / CLEAR [08/2019 - ]

Result

Result	Proceed to
DTCs are output	A
DTCs are not output	B

Result:

A

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

Result:

B

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 - ]