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Home >> Lexus >> 2020 >> LS 500h AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 48 (Left Side Lidar System - Diagnostic Codes) >> LEFT SIDE LiDAR SYSTEM >> DTC U0322-51: Software Incompatibility with Body Control Module Not Programmed; DTC U1320-51: Software Incompatibility with Advanced Drive Control Module Not Programmed [11/2021 - ] >> Procedure

DTC U0322-51: Software Incompatibility with Body Control Module Not Programmed; DTC U1320-51: Software Incompatibility with Advanced Drive Control Module Not Programmed [11/2021 - ]: Procedure

WARNING: This page is about a different car, the 2024 Lexus LS 500h, 2023 Lexus LS 500h, and 2022 Lexus LS 500h. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DTC (ETHERNET COMMUNICATION SYSTEM) 

    HINT: 

    Refer to DTC CHECK / CLEAR [11/2021 - ]

    1. Check for DTCs.

      Body Electrical > Ethernet Switch1 > Trouble Codes 

      Body Electrical > Ethernet Switch2 > Trouble Codes 

      Result

      Result Proceed to
      No DTCs output from Ethernet switch 1 and Ethernet switch 2 A
      DTC output from Ethernet switch 1 or Ethernet switch 2 B

    Result: 

    B 

    GO TO ETHERNET COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 10/2023]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ] 

    Result: 

    A 

    See step  2

  2. UPDATE VEHICLE SPECIFICATION INFORMATION 
    1. Update the vehicle specification information.

      Chassis > Advanced Drive Control > Utility 

      Tester Display
      Vehicle Information Registration

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  3

  3. CHECK DTC 
    1. Clear the DTCs.

      Chassis > Left Side LiDAR > Clear DTCs 

    2. Check for DTCs.

      Chassis > Left Side LiDAR > Trouble Codes 

      Result

      Result Proceed to
      DTCs U0322-51 or U1320-51 are output. A
      DTCs are not output. B

    Result: 

    B 

    END (UPDATE MALFUNCTION) 

    Result: 

    A 

    See step  4

  4. CHECK VEHICLE CONTROL HISTORY (RoB) (ADVANCED DRIVE SYSTEM) 
    1. Clear the vehicle control history (RoB).

      Chassis > Advanced Drive Control > Utility 

      Tester Display
      Vehicle Control History (RoB)
    2. Wait at least 5 minutes.
    3. Check the vehicle control history (RoB).

      Chassis > Advanced Drive Control > Utility 

      Tester Display
      Vehicle Control History (RoB)

      Result

      Result Proceed to
      X2603, X2642 and X2651 are not output A
      X2603, X2642 or X2651 are output B

    Result: 

    A 

    REPLACE LIDAR ADVANCED DRIVE ECU ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

    Result: 

    B 

    REPLACE ADVANCED DRIVE ECU ASSEMBLY. Refer to  REMOVAL [11/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ]