Air Flow Meter/Sensor: Testing and Inspection

INTAKE AIR FLOW METER SUB-ASSY
a. Output voltage inspection.
1. Apply battery voltage across terminals 1 (+B) and 2 (E2G).
2. Using a voltmeter, connect the positive (+) tester probe to terminal VG, and negative (-) tester probe to terminal E2G.
3. Blow air into the intake air flow meter, and check that the voltage fluctuates.

b. Resistance inspection.
1. Using an ohmmeter, measure the resistance between terminals 4 (THA) and 5 (E2).

Resistance:
-20 °C (-4 °F) 13.6 - 18.4 KOhm
20 °C (68 °F) 2.21 - 2.69 KOhm
60 °C (140 °F) 0.493 - 0.667 KOhm