MASS AIR FLOW METER ON-VEHICLE INSPECTION

PROCEDURE


  1. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY

    Tech Tips

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



    1. Read the value of Data List item "Mass Air Flow Sensor" using the GTS.

      Note

      Perform the inspection of the mass air flow meter sub-assembly while it is installed to the air cleaner assembly (installed to the vehicle).


      1. Connect the GTS to the DLC3.

      2. Start the engine.

      3. Turn the GTS on.

      4. Warm up the engine.

      5. Turn the A/C switch off.

      6. Enter the following menus: Powertrain / Engine / Data List / MAF Sensor Bank 1 and MAF Sensor Bank 2.


        Powertrain > Engine > Data List
        Tester Display
        MAF Sensor Bank1
        MAF Sensor Bank2

      7. According to the display on the GTS, read the Data List when the engine is running.

        Standard Condition
        GTS Display Condition Specified Condition

        MAF Sensor Bank 1

        MAF Sensor Bank 2

        		 Idling (engine warmed up) 1.8 to 3.0 gm/sec
        2000 rpm (without load) 5.0 to 25.0 gm/sec
        3000 rpm (without load) 6.5 to 30.0 gm/sec

        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.

        Fasten the mass air flow meter sub-assembly again after the inspection.

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