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Home >> Lexus >> 2010 >> HS 250h >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control (Diagnostic Codes (P0010-P0420) >> SFI System >> DTC P0111: Intake Air Temperature Sensor Gradient Too High >> Confirmation Driving Pattern
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Confirmation Driving Pattern

Fig 1: Identifying Power Switch / Scantool Operation Graph
GTY212051Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Connect the Techstream to the DLC3.
  2. Turn the power switch on (IG) and turn the Techstream on.
  3. Clear the DTCs. Refer toDTC CHECK / CLEAR .
  4. Turn the power switch off and wait for at least 30 seconds.
  5. Turn the power switch on (IG) and turn the Techstream on [A].
  6. Put the engine in inspection mode. Refer toINSPECTION MODE PROCEDURE .
  7. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher [B].
  8. Idle the engine for 5 minutes or more [C].

    HINT: 

    During steps [A] through [C], if the change in the intake air temperature is below 1°C (1.8°F), the intake air temperature sensor (mass air flow meter sub-assembly) is malfunctioning. It is not necessary to continue this procedure.

  9. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.
  10. Read the pending DTC [D].

    HINT: 

    • If a pending DTC is outputs, 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: P0111.
  13. 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 ABNORMAL, the system has a malfunction.
    • If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [E] and [F].
  14. Drive the vehicle at 25 mph (40 km/h) or more for a total of 5 minutes or more [E].
  15. Check the DTC judgment result again [F].

    HINT: 

    If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [E] and [F] again.