Main Body ECU Communication Stop Mode [09/2022 - 11/2022]: Description

WARNING: This page is about a different car, the 2023 Toyota GR Corolla and 2023 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

Detection Item	Symptom	Trouble Area
Main Body ECU Communication Stop Mode	Any of the following conditions are met: Communication stop for "Main Body" is indicated on the "Communication Bus Check" screen of the Techstream. Refer to PROBLEM SYMPTOMS TABLE [09/2022 - 11/2022] Communication stop history for "Main Body" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Main Body" is 6 or more.) Refer to PROBLEM SYMPTOMS TABLE [09/2022 - 11/2022] Communication system DTCs (DTCs that start with U) that correspond to "Main Body ECU Communication Stop Mode" in "DTC Combination Table" are output. Refer to DTC COMBINATION TABLE [09/2022 - 11/2022]	Main body ECU (multiplex network body ECU) branch line or connector Power source circuit of main body ECU (multiplex network body ECU) or instrument panel junction block assembly Main body ECU (multiplex network body ECU) or instrument panel junction block assembly ground circuit Main body ECU (multiplex network body ECU) or instrument panel junction block assembly