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Home >> Lexus >> 2024 >> TX 550h+ >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (3 Of 6) >> SFI System >> DTC P0403-14: Exhaust Gas Recirculation "A" Control Circuit 1 Open; DTC P1400-00: Exhaust Gas Recirculation "A" Control Circuit 2 Open; DTC P1405-96: Exhaust Gas Recirculation "A" Control Circuit 3 Open; DTC P1410-04: Exhaust Gas Recirculation "A" Control Circuit 4 Open [12/2023 - ] >> Confirmation Driving Pattern
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Confirmation Driving Pattern

HINT: 

GTY1240870Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  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 ON [A].
  4. Put the engine in Inspection Mode (2WD for measuring Exhaust Gas).

    Refer to INSPECTION MODE PROCEDURE [09/2023 - ]

  5. Start the engine and warm it up [B].
  6. Press the EV/HV mode selection switch to select HV mode.
  7. With the engine running, drive the vehicle at 20 km/h (12 mph) or more for 10 minutes or more [C].
    WARNING:

    When performing the confirmation driving pattern, obey all speed limits and traffic laws.

    HINT: 

    If the engine stops, further depress the accelerator pedal to restart the engine.

  8. Enter the following menus: Powertrain / Engine / Trouble Codes [D].
  9. 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.
  10. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  11. Input the DTC: P0403-14, P1400-00, P1405-96 or P1410-04.
  12. Check the DTC judgment result.

    HINT: 

    • If the judgment result shows NORMAL, the system is normal.
    • If the judgment result shows ABNORMAL, the system is malfunctioning.
    • [B] to [D]: 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.