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Image Mass Air Flow(MAF)Sensor
The Mas s Air flow (MAT) sensor
measure s the amount of air flowing into the engine.
This value is used by the
Powertrain Control Module (PCM) in calculating the required
Fuel injector pulse within order
to provide the desired air fuel ratio. This input can also
be used in determining
Electronic Pressure Control (EPC). Shift and torque converter
The MAE sensor is located
directly in the airflow path between the air cleaner housing
and the throttle body. Ail air
entering the intake manifold must pass through the sensor.
Located in the MAT sensor
directly in the airstream are two platinum wires, a hot wire
heated by electrical current and
a cold reference wire. The MAF sensor uses the air flow
across these wires to calculate
The hot wire is maintained at
200CC (392CF) above ambient temperature as measured by
a constant cold *e. The current
required to maintain the temperature of the hot wire is
proportional to the air mass
flow. The MAE sensor then measures the amount of
electrical current required to
maintain this temperature difference and converts this
value to an analog DC voltage.
This output varies directly with the mass air flow rate.
Pay attention to the Paragraph about the torq converter.
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