Air Flow Meter/Sensor: Testing and Inspection

Mass Air Flow Sensor Testing:

MASS AIR FLOW SENSOR

1. Peel mass air flow sensor harness connector rubber as shown in the figure if the harness connector is connected.

2. Turn ignition switch "ON".

3. Start engine and warm it up sufficiently.

4. Check voltage between terminal (b) and ground.


Conditions Voltage V
Ignition switch "ON" (Engine OFF) Less than 0.5
Idle (Engine at operating temp.) Approximately 1.0 - 1.3


5. If NG, remove mass air flow sensor from air duct. Check hot wire for damage or dust.