MASS AIR FLOW METER ON-VEHICLE INSPECTION

CAUTION / NOTICE / HINT

Note


  • Perform the mass air flow meter inspection in accordance with the following procedure.

  • Replace the mass air flow meter only when foreign matter adheres to the sensor and the MAF value in the Data List (with the engine stopped) is not within the normal operating range.

PROCEDURE


  1. INSPECT MASS AIR FLOW METER


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

      Note


      • 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 into the air cleaner case (installed on the vehicle).

      • During the test, do not use an exhaust air duct on the exhaust pipe.


      1. Connect the GTS to the DLC3.

      2. Turn the ignition switch to ON (IG) (do not run the engine).

      3. Turn the GTS on.

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

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

        Standard Condition
        Tester Display Condition Standard Condition
        MAF

        • Engine not running

        • 30 seconds after ignition switch is turned to on (IG)

        		 0.18 g/sec or less

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

        • If the result is within the specified range, remove and inspect the mass air flow meter Click here.