DTC B1321-87: Lost Communication with EMV Missing Message [09/2022 - ]: Procedure
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, 2021 Lexus ES 300h, and 2020 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK FOR DTC (AUDIO AND VISUAL SYSTEM)
- Check if audio and visual system DTCs are output.
Body Electrical > Navigation System > Trouble Codes
Result
Result Proceed to DTCs are not output A DTCs are output B
Result:
B
GO TO AUDIO AND VISUAL SYSTEM
For 12.3 Inch Display: Refer to DIAGNOSTIC TROUBLE CODE CHART [09/2022 - ]
For 8 Inch Display: Refer to DIAGNOSTIC TROUBLE CODE CHART [09/2022 - ]
Result:
A
See step 2
- Check if audio and visual system DTCs are output.
- CHECK FOR DTC (AUDIO AND VISUAL SYSTEM)
- Disconnect the G17 combination meter assembly connector.
- Check if audio and visual system DTCs are output.
Body Electrical > Navigation System > Trouble Codes
HINT:
If audio and visual system DTCs are output, it can be judged that the radio receiver assembly could perform local bus communication line diagnosis, therefore the audio and visual system may not be malfunctioning.
Result
Result Proceed to DTCs are not output A DTCs are output B
Result:
A
REPLACE RADIO RECEIVER ASSEMBLY. Refer to REMOVAL [09/2022 - ]
Result:
B
REPLACE COMBINATION METER ASSEMBLY. Refer to REMOVAL [08/2021 - ]