MASS AIR FLOW METER INSPECTION


  1. INSPECT MASS AIR FLOW METER


    1. Check the output voltage.


      1. A01BHN0E08
        Text in Illustration
        *a Air

        Apply battery voltage across terminals 1 (+B) and 2 (E2G).

        Note

        While using the battery during inspection, do not bring the positive and negative tester probes too close to each other as a short circuit may occur.

      2. Using a voltmeter, connect the positive (+) tester probe to terminal 3 (VG) and the negative (-) tester probe to terminal 2 (E2G).

      3. Blow air into the mass air flow meter and check that the voltage fluctuates.

        If the voltage does not fluctuate, replace the mass air flow meter.

    2. Check the resistance.


      1. A01BDI4E06
        Text in Illustration
        *a

        Component without harness connected

        (Mass Air Flow Meter)
        *b Resistance
        *c Temperature
        *d Acceptable Range

        Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        Tester Connection Condition Specified Condition
        4 (THA) - 5 (E2) -20°C (-4°F) 12.5 to 16.9 kΩ
        4 (THA) - 5 (E2) 20°C (68°F) 2.19 to 2.67 kΩ
        4 (THA) - 5 (E2) 60°C (140°F) 0.50 to 0.68 kΩ

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