Mass Air Flow Meter On-Vehicle Inspection


  1. INSPECT 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 or there is foreign matter on the MAF meter platinum hot wire (heater).


1. INSPECT MASS AIR FLOW METER

  1. Read the value using the intelligent tester.

    NOTICE:
    1. Perform the inspection with the vehicle indoors and on a level surface.
    2. Perform the inspection of the MAF meter while it is installed to the air cleaner case (installed to the vehicle).
    3. During the test, do not use the exhaust air duct to apply suction to the exhaust pipe.

    1. Turn the engine switch on (IG).

    2. Turn the intelligent tester on.

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

    4. Wait 30 seconds and read the value on the intelligent tester.

      Standard:
      Item
      		Condition
      		Specified Condition
      MAF
      1. Engine not running
      1. 30 seconds after ignition switch is turned ON
      		w/ Precleaner:
      Less than 0.87 g/sec.
      w/o Precleaner:
      Less than 0.86 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 mass air flow meter (LandCruiser RM000002S6O02BX.html).