DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0125-87: Lost Communication with Multi-axis Acceleration Sensor Module Missing Message; DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message [09/2020 - ]: Procedure
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2024 Lexus IS 500, 2024 Lexus IS 350, 2024 Lexus IS 300, 2023 Lexus IS 500, and 2023 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK FOR DTCs
- Clear the DTCs.
Chassis > Front Recognition Camera > Clear DTCs
- Make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the system cannot detect the malfunction.
- Check for DTCs.
Chassis > Front Recognition Camera > Trouble Codes
Result
Result Proceed to CAN communication system DTC is not output A CAN communication system DTC is output B
Result:
A
USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2020 - 11/2021] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 09/2022] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2022 - ]
Result:
B
GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - ]
- Clear the DTCs.