Headlight ECU LH Communication Stop Mode [10/2018 - ]: 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 [10/2018 - 10/2019] , or refer to PROBLEM SYMPTOMS TABLE [10/2019 - 08/2021] , or refer to PROBLEM SYMPTOMS TABLE [08/2021 - 07/2022] , or refer to PROBLEM SYMPTOMS TABLE [07/2022 - ] 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 [10/2018 - 10/2019] , or refer to PROBLEM SYMPTOMS TABLE [10/2019 - 08/2021] , or refer to PROBLEM SYMPTOMS TABLE [08/2021 - 07/2022] , or refer to PROBLEM SYMPTOMS TABLE [07/2022 - ] 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 [10/2018 - 10/2019] , or refer to DTC COMBINATION TABLE [10/2019 - 08/2021] , or refer to DTC COMBINATION TABLE [08/2021 - 07/2022] , or refer to DTC COMBINATION TABLE [07/2022 - ]	No. 1 headlight ECU sub-assembly LH branch line or connector Power source circuit of no. 1 headlight ECU sub-assembly LH No. 1 headlight ECU sub-assembly LH ground circuit No. 1 headlight ECU sub-assembly LH