Mass Air Flow Meter: Inspection
WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT MASS AIR FLOW METER
- Output voltage inspection.
- Apply battery voltage across terminals 1 (+B) and 2 (E2G).
- Connect the position (+) tester probe to terminal 3 (VG), and negative (-) tester probe to terminal 2 (E2G).
- Blow air into the MAF meter, and check that the voltage fluctuates.
- Resistance inspection.
- Using an ohmmeter, measure the resistance between terminals 4 (THA) and 5 (E2).
Resistance
SYMBOLS (TERMINAL NO.) AND RESISTANCE REFERENCESymbols (Terminal No.) Resistance Temperature THA (4) - E2 (5) 13.6 to 18.4 kΩ -20° (-4°F) THA (4) - E2 (5) 2.21 to 2.69 kΩ 20° (68°F) THA (4) - E2 (5) 0.49 to 0.67 kΩ 60° (140°F)
- Using an ohmmeter, measure the resistance between terminals 4 (THA) and 5 (E2).
- Output voltage inspection.