DTC U11B9-87: Lost Communication with ECM/PCM "A" (ch6) Missing Message [09/2023 - ]: Wiring Diagram
WARNING: This page is about a different car, the 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.
Refer to the wiring diagram for the ECM Power Source Circuit.
Refer to WIRING DIAGRAM
Refer to the DTC P2533-14.
Refer to WIRING DIAGRAM
Refer to the wiring diagram for DTC U1156-87
Refer to WIRING DIAGRAM