DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module "A" Missing Message; DTC U0131-87: Lost Communication with Power Steering Control Module "A" Missing Message [10/2023 - ]: Procedure
WARNING: This page is about a different car, the 2024 Lexus LS 500. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK FOR DTCs
- Check for DTCs.
HINT:
If the detection conditions are not met, the system cannot detect the malfunction.
Body Electrical > Front Side Radar "A" > 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 [10/2023 - ]
Result:
B
GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ]
- Check for DTCs.