Air Flow /Mass Sensor ( MAF )

Air Flow / Mass Sensor (MAF)

What voltage did you get when you first powered up the sensor without passing air over the sensor?

1.802V

How did the voltage change when air was passed over the sensor?

The voltage changes depending on the amount of air being passed through the sensor.

Are your results within the manufactures's specifications, why or why not?

Yes it does match the manufactures specification.

Explain the internal operation of this sensor.

Air flow sensor measures the amount of air flowing into the inlet manifold. There are various types of air flow sensors namely for vane type, carmen vortex, hot wire type and MAP type. Each have different operations but same functions e.g MAP sensor works with the vacuum pressure inside the inlet manifold. The higher the vacuum the lower the manifold pressure and the lower the vacuum the higher the mnifold pressure. The changes in voltage is then picked up by the ECU which determines the injection amount.