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Home >> Lexus >> 2017 >> ES 350 >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Control System (Service Information) >> Mass Air Flow Meter >> On-Vehicle Inspection [07/2015 - ] >> Procedure

On-Vehicle Inspection [07/2015 - ]: Procedure

  1. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY 
    1. Read the values using the Techstream (MAF).
      NOTE:
      • Perform the inspection with the vehicle indoors and on a level surface.
      • Perform the inspection of the mass air flow meter sub-assembly while it is installed to the air cleaner cap sub-assembly (installed to the vehicle).
      • During the test, do not use an exhaust air duct on the exhaust pipe.
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG) (do not start the engine).
      3. Enter the following menus: Powertrain / Engine / Data List / MAF.
      4. Wait for 30 seconds, and read the values on the Techstream.

        Standard Condition

        Tester Display Condition Specified Condition
        MAF
        • Engine not running
        • 30 seconds after engine switch turned on (IG)
        0.49 g/sec. or less

        If the result is not as specified, replace the mass air flow meter sub-assembly.

        If the result is within the specified range, remove and inspect the mass air flow meter sub-assembly (See step  1).