Headlight ECU LH Communication Stop Mode [08/2019 -]: Description

Detection Item	Symptom	Trouble Area
Headlight ECU LH Communication Stop Mode	Any of the following conditions are met: Communication stop for "HL AutoLeveling/AFS/AHS" is indicated on the "Communication Bus Check" screen of the Techstream. Refer to PROBLEM SYMPTOMS TABLE [04/2018 - 08/2020] , or refer to PROBLEM SYMPTOMS TABLE [08/2020 - 08/2021] , or refer to PROBLEM SYMPTOMS TABLE [08/2021 -] Communication stop history for "HL AutoLeveling/AFS/AHS" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "HL AutoLeveling/AFS/AHS" is 6 or more.) Refer to PROBLEM SYMPTOMS TABLE [04/2018 - 08/2020] , or refer to PROBLEM SYMPTOMS TABLE [08/2020 - 08/2021] , or refer to PROBLEM SYMPTOMS TABLE [08/2021 -] Communication system DTCs (DTCs that start with U) that correspond to "Headlight ECU LH Communication Stop Mode" in "DTC Combination Table" are output. Refer to DTC COMBINATION TABLE [04/2018 - 08/2020] , or refer to DTC COMBINATION TABLE [08/2020 - 08/2021] , or refer to DTC COMBINATION TABLE [08/2021 -]	Headlight ECU sub-assembly LH branch line or connector Power source circuit of headlight ECU sub-assembly LH Headlight ECU sub-assembly LH ground circuit Headlight ECU sub-assembly LH