LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2008 >> IS F >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - System & Component Testing, R & I >> Mass Air Flow Meter >> On-Vehicle Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

On-Vehicle Inspection

NOTE:
  • Perform the MAF meter inspection according to the procedure below.
  • Only replace the MAF meter when the MAF value in the DATA LIST (with the engine stopped) is not within the normal operating range or there is foreign matter on the MAF meter platinum hot wire (heater).
  1. INSPECT MASS AIR FLOW METER 
    1. Read the value (MAF) using the Techstream.
      NOTE:
      • Perform the inspection with the vehicle indoors and on a level surface.
      • Perform the inspection of the MAF meter while it is installed to the air cleaner case (installed to the vehicle).
      • During the test, do not use the exhaust air duct to perform suction on the exhaust pipe.
      1. Connect the Techstream to the DLC3
      2. Turn the engine switch on (IG)
        NOTE: Do not run the engine.
      3. Turn the Techstream ON
      4. Enter the following menus. Powertrain / Engine / Data List / MAF
      5. Wait 30 seconds, and read the values on the Techstream.

        Specified Condition 

        ITEM SPECIFIED CONDITION CHART

        Item Condition Specified Condition
        MAF
        • Engine not running
        • 30 seconds after engine switch is turned on (IG)
        		 Below 0.62 gm/sec

        If the result is not as specified, replace the MAF meter

        If the result is within the specified range, inspect the MAF meter (See INSPECTION  )

scientia non olet · About LEMON Manuals