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Home >> Lexus >> 2011 >> GX 460 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0401-P1605)) >> SFI System >> DTC P0403: Exhaust Gas Recirculation Control Circuit >> Confirmation Driving Pattern
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Confirmation Driving Pattern

Fig 1: Identifying Confirmation Driving Pattern
GTY283813Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Connect the Techstream to the DLC3.
  2. Turn the engine switch on (IG) and turn the Techstream on [A].
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure). Refer to DTC CHECK / CLEAR .
  4. Start the engine and warm it up [B].
  5. Drive the vehicle at 20 km/h (12 mph) or more for 10 minutes [C].
    WARNING:

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

  6. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [D].
  7. 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.
  8. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
  9. Input the DTC: P0403.
  10. Check the DTC judgment result.
    Techstream 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
    UNKNOWN
    • 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.
  11. If the judgment result is INCOMPLETE or UNKNOWN and no pending DTC is output, perform a universal trip and check for permanent DTCs. Refer to DTC CHECK / CLEAR .

    HINT: 

    • If a permanent DTC is output, the system is malfunctioning.
    • If no permanent DTC is output, the system is normal.