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Home >> Lexus >> 2021 >> LS 500h AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Can Communication System - Circuit Tests (2 Of 9) >> Can Communication System >> Sub Battery Module Communication Stop Mode [10/2020 - 11/2021] >> Description

Sub Battery Module Communication Stop Mode [10/2020 - 11/2021]: Description

Detection Item Symptom Trouble Area
Sub Battery Module Communication Stop Mode Any of the following conditions are met:
  • Communication stop for "Sub Battery System" is indicated on the "Communication Bus Check" screen of the Techstream.

    Refer to DIAGNOSIS SYSTEM [10/2020 - 11/2021]

  • Communication stop history for "Sub Battery System" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Sub Battery System" is 6 or more.)

    Refer to PROBLEM SYMPTOMS TABLE [10/2020 - 11/2021]

  • Communication system DTCs (DTCs that start with U) that correspond to "Sub Battery Module Communication Stop Mode" in "DTC Combination Table" are output.

    Refer to DTC COMBINATION TABLE [10/2020 - 11/2021]

  • Sub-battery with control assembly branch wire or connector*1
  • Power source circuit of sub-battery with control assembly*1
  • Sub-battery with control assembly ground circuit*1
  • Sub-battery with control assembly*1
  • Multi power control ECU assembly branch wire or connector*2
  • Power source circuit of multi power control ECU assembly*2
  • Multi power control ECU assembly ground circuit*2
  • Multi power control ECU assembly*2

*1: w/o Advanced Drive

*2: w/ Advanced Drive