MASS AIR FLOW METER ON-VEHICLE INSPECTION

Note


  • Perform the mass air flow meter inspection according to the procedures below.

  • Only replace the mass air flow 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 INTAKE AIR FLOW METER

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    1. Read values using an intelligent tester (MAF).

      Note


      • Turn the ignition switch OFF.

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

      • Perform the inspection of the mass air flow meter while it is installed in the air cleaner case (installed on the vehicle).

      • During the test, do not use the exhaust air duct to perform suction on the exhaust pipe.


      1. Turn the ignition switch ON (do not run the engine).

      2. Turn the tester ON.

      3. Select the following menu items: Powertrain / Engine / Data List / MAF.

      4. Wait 30 seconds, and read the values on the intelligent tester.

        Standard condition
        Less than 0.38 g/sec.

        • If the result is not as specified, replace the mass air flow meter.

        • If the result is within the specified range, inspect the MAF meter Click here.