MASS AIR FLOW METER INSPECTION

PROCEDURE


  1. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY


    1. Visually check the mass air flow meter.


      1. A00495HC10
        *a View A
        *b Platinum Hot Wire (Heater) and Temperature Sensing Element

        Perform a visual check for any foreign matter on the platinum hot wire (heater) and temperature sensing element of the mass air flow meter shown in the illustration.

        OK
        There is no foreign matter.

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

    2. Check the resistance.


      1. A004AK8C05
        *a

        Component without harness connected

        (Mass Air Flow Meter sub-assembly)

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        1 (THA) - 2 (E2) -20°C (-4°F) 13.6 to 18.4 kΩ
        20°C (68°F) 2.21 to 2.69 kΩ
        60°C (140°F) 0.49 to 0.67 kΩ

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