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Home >> Lexus >> 2020 >> LS 500 Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Navigation System - Diagnostic Codes (2 Of 2) & Symptom Tests (1 Of 2) >> Navigation System >> DTC U0073: Sending Malfunction (Navigation to APGS); DTC U0100: Engine ECU Communication; DTC U0129: VSC(ECB)ECU Communication; DTC U0140: Lost Communication with Body Control Module; DTC U0155: Meter ECU Communication; DTC U0164: Air Conditioner ECU Communication; DTC U0198: Lost Communication with Telematic Control Module; DTC U0208: Lost Communication with "Seat Control Module A"; DTC U0209: Lost Communication with "Seat Control Module B"; DTC U023B: Lost Communication with Image Processing Module "B"; DTC U0265: Lost Communication with Image Processing Sensor A; DTC U1110: Clearance Sonar ECU Communication [12/2017 - 10/2022] >> Procedure
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DTC U0073: Sending Malfunction (Navigation to APGS); DTC U0100: Engine ECU Communication; DTC U0129: VSC(ECB)ECU Communication; DTC U0140: Lost Communication with Body Control Module; DTC U0155: Meter ECU Communication; DTC U0164: Air Conditioner ECU Communication; DTC U0198: Lost Communication with Telematic Control Module; DTC U0208: Lost Communication with "Seat Control Module A"; DTC U0209: Lost Communication with "Seat Control Module B"; DTC U023B: Lost Communication with Image Processing Module "B"; DTC U0265: Lost Communication with Image Processing Sensor A; DTC U1110: Clearance Sonar ECU Communication [12/2017 - 10/2022]: Procedure

  1. CHECK DTC (CAN COMMUNICATION SYSTEM) 
    1. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [12/2017 - 10/2020] , or refer to DTC CHECK / CLEAR [10/2020 - 10/2022]

      Body Electrical > Navigation System > Clear DTCs 

    2. Turn the engine switch off.
    3. Turn the engine switch on (IG) and wait for 30 seconds.
    4. Recheck for DTCs and check if the same DTC is output again.

      Refer to DTC CHECK / CLEAR [12/2017 - 10/2020] , or refer to DTC CHECK / CLEAR [10/2020 - 10/2022]

      Body Electrical > Navigation System > Trouble Codes 

      OK

      No DTCs are 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] 

    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]