Mass Air Flow Meter On-Vehicle Inspection


  1. CHECK MASS AIR FLOW METER

Mass Air Flow Meter -- On-Vehicle Inspection


NOTICE:
  1. Perform the MAF meter inspection according to the procedures below.
  2. Only replace the MAF meter when the MAF value in the DATA LIST (with the engine stopped) is not within the normal operating range.


1. CHECK MASS AIR FLOW METER


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Mass Air Flow Meter.Mass Air Flow Meter On-Vehicle Inspection

  1. Read value using intelligent tester (MAF).

    NOTICE:
    1. Turn off the engine.
    2. Perform the inspection with the vehicle indoors and on a level surface.
    3. Perform the inspection of the MAF meter while it is installed to the air cleaner case (installed to the vehicle).
    4. 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 and ECT / Data List / Primary / MAF.

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

      Standard condition:
      Less than 0.35 g/sec.
      1. If the result is not as specified, replace the MAF meter.