MASS AIR FLOW METER ON-VEHICLE INSPECTION

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

      
      

      1. Connect the GTS to the DLC3.

      2. Start the engine.

      3. Turn the GTS on.

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

         
         Powertrain > Engine > Data List

         Tester Display
         Mass Air Flow Sensor

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

         Standard Condition
         GTS Display Condition Specified Condition Mass Air Flow Sensor Idling (engine warmed up) 2.0 to 5.0 gm/sec 2000 rpm (without load) 18.0 to 22.0 gm/sec 3000 rpm (without load) 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, remove and inspect the mass air flow meter sub-assembly.

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2. PERFORM INITIALIZATION

   
   

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

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