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Home >> Lexus >> 2011 >> ES 350 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0010 - P0339)) >> SFI System >> DTC P0171, P0172, P0174, P0175: System Too Lean (Bank 1); System Too Rich (Bank 1); System Too Lean (Bank 2); System Too Rich (Bank 2) >> Confirmation Driving Pattern

Confirmation Driving Pattern

Fig 1: Identifying Confirmation Driving Pattern
GTY351650Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Connect the Techstream to the DLC3.
  2. Turn the engine switch on (IG) and turn the Techstream on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure). Refer to DTC CHECK/CLEAR .
  4. Turn the engine switch off and wait for 30 seconds.
  5. Turn the engine switch on (IG) and turn the Techstream on [A].
  6. Start the engine and warm it up (until the engine coolant temperature is 75°C (167°F) or higher) with all the accessories switched off [B].
  7. With the engine warmed up, idle the engine for 2 minutes or more [C].
  8. Drive the vehicle at between 37 and 75 mph (60 and 120 km/h) for 5 minutes or more [D].
    WARNING: When performing the confirmation driving pattern, obey all speed limits and traffic laws.
  9. Enter the following menus: Powertrain/Engine/Trouble Codes/Pending.
  10. Read the pending DTC [E].
  11. If a pending DTC is output, the system is malfunctioning.

    HINT: 

    If a pending DTC is not output, perform the following procedure.

  12. If 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.