MASS AIR FLOW METER INSPECTION

PROCEDURE

  1. INSPECT MASS AIR FLOW METER SUB-ASSEMBLY

    1. A190679C20

      *a

      Platinum Hot Wire (Heater)

      *b

      Temperature Sensor (Thermistor)

      Perform a visual check for any foreign matter on the platinum hot wire (heater) and temperature sensor (thermistor) of the mass air flow meter sub-assembly as 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. A226758C02

      *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.