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Home >> Lexus >> 2010 >> LX 570 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control (Diagnostic Codes (P0327-P1607) >> SFI System >> DTC P0505: Idle Control System Malfunction >> Confirmation Driving Pattern
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Confirmation Driving Pattern

Fig 1: Confirmation Driving Pattern
GTY218338Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Connect 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 operation).
  4. Turn the engine switch off and wait for at least 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 more) with all the accessories switched OFF [B].
  7. Idle the engine for 10 minute or more [C].
  8. Accelerate the vehicle to 10 km/h (6.25 mph) or more, and then idle the engine [D].
    WARNING:

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

  9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [E].
  10. 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.
  11. Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
  12. Input the DTC: P0505.
  13. Check the DTC judgment result.
    Tester 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's memory limit

    HINT: 

    • If the judgment result shows ABNORMAL, the system has a malfunction.
    • If the judgment result shows INCOMPLETE or UNKNOWN, repeat step [D] 4 times, allowing 20 seconds or more between each repetition, and then check the DTC judgment result [F].
  14. If the test 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.