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Home >> Lexus >> 2020 >> LS 500 Base, AWD >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating / Air Conditioning System - Diagnostic Codes (1 Of 2), Circuit & Symptom Tests >> Air Conditioning System >> DTC U0100: Communication Stop from ECM to Distance Control ECU, VSC; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0142: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Restraints Control Module; DTC U0155: Lost Communication with Combination Meter; DTC U0163: Lost Communication with Navigation Control Module; DTC U0201: Lost Communication with "Door Control Module C"; DTC U0202: Lost Communication with "Door Control Module D"; DTC U0210: Lost Communication with "Seat Control Module C" [12/2017 - ] >> Procedure
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DTC U0100: Communication Stop from ECM to Distance Control ECU, VSC; DTC U0131: Lost Communication with Power Steering Control Module; DTC U0142: Lost Communication with Main Body ECU; DTC U0151: Lost Communication with Restraints Control Module; DTC U0155: Lost Communication with Combination Meter; DTC U0163: Lost Communication with Navigation Control Module; DTC U0201: Lost Communication with "Door Control Module C"; DTC U0202: Lost Communication with "Door Control Module D"; DTC U0210: Lost Communication with "Seat Control Module C" [12/2017 - ]: Procedure

  1. GO TO CAN COMMUNICATION SYSTEM 
    1. Check for DTCs.

      Refer to DTC CHECK / CLEAR [12/2017 - ]

      Body Electrical > Air Conditioner > Trouble Codes 

      OK

      DTC U0100, U0131, U0142, U0151, U0155, U0163, U0201, U0202 and U0210 are not output

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - 09/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - 10/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2020 - 11/2021]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 10/2022]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 10/2023]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ] 

    Result: 

    NG 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - 09/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - 10/2020]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2020 - 10/2023]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ]