MASS AIR FLOW METER ON-VEHICLE INSPECTION

CAUTION / NOTICE / HINT

Note


  • Perform the MAF meter inspection according to the procedures below.

  • Only replace the MAF 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).

PROCEDURE


  1. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY


    1. Read the value using the intelligent tester (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 to the air cleaner case (installed to the vehicle).

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


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

      2. Turn the tester on.

      3. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / MAF Bank 1 or MAF Bank 2.

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

        Standard
        Item Condition Specified Condition
        MAF Bank 1

        • Engine not running


        • Wait 30 seconds after power switch is turned ON (IG)

        		 Below 0.30 g/sec.
        MAF Bank 2

        • Engine not running


        • Wait 30 seconds after power switch is turned ON (IG)

        		 Below 0.34 g/sec.

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

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