MASS AIR FLOW METER ON-VEHICLE INSPECTION

CAUTION / NOTICE / HINT

Note


  • Perform the mass air flow meter sub-assembly inspection according to the procedures below.

  • Only replace the mass air flow meter sub-assembly when the mass air flow value in the Data List (with the engine stopped) is not within the normal operating range or there is foreign matter on the mass air flow meter platinum hot wire (heater).

PROCEDURE


  1. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY


    1. Connect the GTS to the DLC3.

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

    3. Turn the GTS on.

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


      Powertrain > Engine and ECT > Data List
      Tester Display
      MAF

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

      Standard
      Item Condition Specified Condition
      MAF

      • Engine not running

      • 30 seconds after turning ignition switch to ON

      		 0.51g/sec. or less

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

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

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