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Home >> Lexus >> 2025 >> NX 350h >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (P064A-P11EA) >> SFI System >> DTC P064A-49: Fuel Pump Control Module Internal Electronic Failure [03/2022 - ] >> Confirmation Driving Pattern
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Confirmation Driving Pattern

HINT: 

  1. Connect the GTS to the DLC3.
  2. Turn the ignition switch to ON.
  3. Turn the GTS on.
  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  5. Turn the ignition switch off and wait for at least 30 seconds.
  6. Turn the ignition switch to ON.
  7. Turn the GTS on.
  8. Put the engine in Inspection Mode (Maintenance Mode).

    Refer to INSPECTION MODE PROCEDURE [11/2021 - ]

  9. Start the engine and wait 10 seconds or more [A].
  10. Enter the following menus: Powertrain / Engine / Trouble Codes [B].
  11. Read the pending DTCs.

    HINT: 

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
  12. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  13. Input the DTC: P064A-49.
  14. 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

    HINT: 

    • If the judgment result is NORMAL, the system is normal.
    • If the judgment result is ABNORMAL, the system is malfunctioning.
    • If the judgment result is INCOMPLETE, run the engine at an engine speed of 2500 rpm or more for 10 seconds or more and check the DTC judgment result again.
    • [A] to [B]: Normal judgment procedure.

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

    • When clearing the permanent DTCs, do not disconnect the cable from the auxiliary battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.