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Mass Air Flow Meter: Inspection

  1. INSPECT MASS AIR FLOW METER
    1. Check the output voltage.
      1. Apply battery voltage across terminals 1 (+B) and 2 (E2G)
      2. Connect the positive (+) tester probe to terminal VG, and negative (-) tester probe to terminal E2G.
      3. Blow air into the Mass Air Flow (MAF) meter, and check that the voltage fluctuates.
    2. Measure the resistance between terminals 4 (THA) and 5 (E2).

      Resistance

      RESISTANCE SPECIFIED CONDITION REFERENCE

      Condition Specified Condition
      -20°C (-4°F) 13.6 to 18.4 kΩ
      20°C (68°F) 2.21 to 2.69 kΩ
      60°C (140°F) 0.493 to 0.667 kΩ

      If the result is not as specified, replace the MAF meter.

      Fig 1: Measuring Resistance Between Terminals 4 (THA) And 5 (E2)
      G04427391Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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