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Home >> Lexus >> 2024 >> LX 600 F Sport >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Automatic Transmission System - Diagnostic Codes (4 Of 4) & Circuit Tests >> Automatic Transmission System >> DTC U0129-87: Lost Communication With Brake System Control Module Missing Message [12/2021 - 11/2022] >> Confirmation Driving Pattern
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Confirmation Driving Pattern

HINT: 

  1. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  2. Turn the ignition switch off and wait for at least 30 seconds.
  3. Turn the ignition switch to ON.
  4. Wait for 5 seconds or more with the ignition switch ON. [*1]

    HINT: 

    [*1]: Normal judgment procedure.

    The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

  5. Enter the following menus: Powertrain / Transmission / Utility / All Readiness.
  6. Input the DTC: U0129-87.
  7. Check the DTC judgment result.
    GTS Display Description
    NORMAL
    • DTC judgment completed
    • System normal
    ABNORMAL
    • DTC judgment completed
    • System abnormal
    INCOMPLETE
    • DTC judgment not completed
    • Perform driving pattern after confirming DTC enabling conditions
    N/A
    • Unable to perform DTC judgment
    • Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

    HINT: 

    • If the judgment result shows NORMAL, the system is normal.
    • If the judgment result shows ABNORMAL, the system has a malfunction.
    • If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.