Mass Air Flow Meter: Inspection

1. Check the output voltage.
   1. Apply battery voltage across terminals 1 (+B) and 2 (E2G).
   2. Using a voltmeter, connect the positive (+) tester probe to terminal 3 (VG), and negative (-) tester probe to terminal 2 (E2G).
   3. Blow air into the MAF meter, and check that the voltage fluctuates.
2. Measure the resistance between terminals 4 (THA) and 5 (E2).

Standard resistance 

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

Fig 1: Inspecting Mass Air Flow Meter

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