MASS AIR FLOW METER ON-VEHICLE INSPECTION

CAUTION / NOTICE / HINT

Note


  • Perform the intake mass air flow meter sub-assembly inspection according to the procedures below.

  • Only replace the intake mass air flow meter sub-assembly when the intake mass air flow value in the Data List (with the engine stopped) is not within the normal operating range or there is foreign matter on the intake mass air flow meter platinum hot wire (heater).

Tech Tips

Perform "Inspection After Repairs" after replacing the intake mass air flow meter sub-assembly.


PROCEDURE


  1. INSPECT INTAKE MASS AIR FLOW METER SUB-ASSEMBLY

    Note


    • Perform the inspection with the vehicle indoors and on a level surface.

    • Perform the inspection of the intake 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.

    Tech Tips

    Perform "Inspection After Repairs" after replacing the intake mass air flow meter sub-assembly.



    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG) (do not run the engine).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine / Data List / Mass Air Flow Sensor.


      Powertrain > Engine > Data List
      Tester Display
      Mass Air Flow Sensor

    5. Wait 30 seconds, and then read the values on the GTS.

      Standard
      Item Condition Specified Condition
      Mass Air Flow Sensor

      • Engine not running

      • 30 seconds after engine switch turned on (IG)

      		 0.57 gm/sec or less

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

      If the result is as specified, inspect the intake mass air flow meter sub-assembly.

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