MASS AIR FLOW METER ON-VEHICLE INSPECTION

PROCEDURE


  1. INSPECT INTAKE MASS AIR FLOW METER SUB-ASSEMBLY


    1. Read the value using the GTS (MAF).

      Note

      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).


      1. Connect the GTS to the DLC3.

      2. Start the engine.

      3. Turn the GTS on.

      4. Enter the following menus: Powertrain / Engine / Data List / MAF.


        Powertrain > Engine > Data List
        Tester Display
        MAF

      5. Wait for 30 seconds, and read the value on the GTS.

        Click here

        w/ DPF:

        Click here

        w/ Urea SCR System:

        Click here

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

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

        Click here

  2. CLEAN INTAKE MASS AIR FLOW METER SUB-ASSEMBLY

    Note

    Do not loose a screw for fixing intake air flow meter sub-assembly. The resin of air cleaner cap sub-assembly would be damaged by repetition of fasten and loose more than 10 times.


    1. Detach the 4 clips and disconnect the air cleaner cap sub-assembly.

    2. Remove the air cleaner filter element sub-assembly.

    3. Perform air blowing:


      1. B0068TDC01
        *a Intermittently
        *b 3 to 6 seconds
        *c 1 second
        *d On
        *e Off

        Intermittently air blow the intake air flow meter sub-assembly entrance hole with a pressure of approximately 392 to 981 kPa (4.0 to 10.0 kgf/cm2, 57 to 142 psi) more than 10 times over 30 seconds or more.

        Note

        Do not touch the tip of the air gun nozzle to the air flow meter, and do not insert the tip of the air gun nozzle into the air flow meter entrance hole.

        B0068IAC01
        *a Intake Air Flow Meter Sub-assembly
        *b Air Gun
        *c 0 to 30 mm (0 to 1.18 in.)

    4. Install the air cleaner filter element sub-assembly.

    5. Attach the 4 clips and connect the air cleaner cap sub-assembly.