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. CHECK MASS AIR FLOW METER


    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 MAF 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. Connect the intelligent tester to the DLC3.

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

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

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

        Standard
        Tester Display Condition Specified Condition
        MAF

        • Engine not running

        • 30 seconds after ignition switch turned to ON

        		 Below 0.29 g/sec.

        If the result is not as specified, replace the MAF meter.

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