DTC U0100, U0122 (Body Control Module): Notes
DTC U0100 : BCM (Body Control Module) Lost Communication with ECM/PCM
DTC U0122 : BCM (Body Control Module) Lost Communication with VSA/ABS
How To Use This Service Information .
NOTE:
- If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Refer to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks .
- Before you troubleshoot, review the How to Troubleshoot - Refer to: How to Troubleshoot the Body Electrical (2019 2020 2021) or How to Troubleshoot the Body Electrical (2022 2023) .
- According to the detected DTC (s), check for the power circuit and the ground circuit of the control unit which cannot communicate with the body control module.