Main Body ECU Communication Stop Mode [09/2017 - 05/2019]: Description

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 DIAGNOSIS SYSTEM [09/2017 - 05/2018] , or refer to DIAGNOSIS SYSTEM [05/2018 - 05/2019] 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 [09/2017 - 05/2018] , or refer to DTC COMBINATION TABLE [05/2018 - 05/2019]	Main body ECU (multiplex network body ECU) branch wire 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