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Home >> Lexus >> 2008 >> IS F >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - SFI System Diagnostics (1 Of 4) >> DTC P0111 Intake Air Temperature Sensor 1 Circuit Range / Performance >> Inspection Procedure
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Inspection Procedure

HINT.

Read freeze frame data using the Techstream The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0111) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG)
    3. Turn the Techstream ON.
    4. Enter the following menus" Powertrain / Engine / Trouble Codes.
    5. Read the DTCs.

      Result 

      RESULT CHART

      Result Proceed to
      DTC P0111 and other DTCs are output A
      DTC P0111 is output B

      HINT.

      If any DTCs other than P0111 are output, troubleshoot those DTCs first.

    B: REPLACE MASS AIR FLOW METER  (See REMOVAL )

    A: GO TO DTC CHART  (See DIAGNOSTIC TROUBLE CODE CHART )