DTC U0073: Control Module Communication Bus Off; DTC U0100: Lost Communication With ECM/PCM "A"; DTC U0123: Lost Communication With Yaw Rate Sensor Module; DTC U0126: Lost Communication With Steering Angle Sensor Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0151: Lost Communication With Restraints Control Module [04/2018 - 08/2021]: Procedure
WARNING: This page is about a different car, the 2022 Toyota Avalon, 2021 Toyota Avalon, 2020 Toyota Avalon, and 2019 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK DTC OUTPUT (HEALTH CHECK)
- Clear the DTCs.
Chassis > ABS/VSC/TRAC/EPB > Clear DTCs
- Turn the engine switch off.
- Turn the engine switch on (IG).
- Enter the following menus: System Select / Health Check.
- Check for DTCs.
Result
Result Proceed to DTCs for related systems are output together with DTC U0073, U0100, U0123, U0126, U0142 or U0151. A U0073, U0100, U0123, U0126, U0142 or U0151 is output B DTCs are not output C
Result:
A
GO TO DIAGNOSTIC TROUBLE CODE CHART (RELATED SYSTEM)
Result:
B
INSPECT CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [04/2018 -]
Result:
C
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [04/2018 -]
- Clear the DTCs.