DTC U0100: Lost Communication with ECM/PCM "A"; DTC U0129: Lost Communication with Brake System Control Module; DTC U0130: Lost Communication with Steering Effort Control Module [09/2020 - ]: Procedure

1. Clear the DTCs.

   Refer to DTC CHECK / CLEAR [09/2020 - ]

   Chassis > DRS > Clear DTCs 

2. Check for DTCs.

   Refer to DTC CHECK / CLEAR [09/2020 - ]

   Chassis > DRS > Trouble Codes 

   Result

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

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2020 - 10/2022]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ] 

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - ]