MASS AIR FLOW METER ON-VEHICLE INSPECTION

CAUTION / NOTICE / HINT

PROCEDURE

1. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY

   Tech Tips

   Perform "Inspection After Repair" after replacing the mass air flow meter sub-assembly.

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   1. Read the value of Data List item "Mass Air Flow Sensor" using the GTS.

      Note

      
      

      • Perform the inspection with the vehicle indoors and on a level surface.

      • Perform the inspection of the mass air flow meter sub-assembly while it is installed to the air cleaner cap sub-assembly (installed to the vehicle).

      
      

      1. Warm up the engine.

      2. Turn the A/C switch off.

      3. Turn the engine switch off.

      4. Connect the GTS to the DLC3.

      5. Turn the engine switch on (IG).

      6. Turn the GTS on.

      7. Enter the following menus: Powertrain / Engine / Data List / Mass Air Flow Sensor.

         
         Powertrain > Engine > Data List

         Tester Display
         Mass Air Flow Sensor

      8. According to the display on the GTS, read the Data List when the engine is running.

         Standard Condition
         Tester Display Condition Specified Condition Mass Air Flow Sensor Idling 2.0 to 5.0 gm/sec 2500 rpm 18.0 to 22.0 gm/sec 3000 rpm 28.0 to 34.0 gm/sec

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

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

         Fasten the mass air flow meter sub-assembly again after the inspection.

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