Axiom 2WD V6-3.5L (2002)
Mass Air Flow Sensor: Description and Operation
The mass air flow (MAF) sensor measures the difference between the volume and the quantity of air that enters the engine. "Volume" means the size of
the space to be filled. "Quantity" means the number of air molecules that will fit into the space.This information is important to the PCM because
heavier, denser air will hold more fuel than lighter, thinner air.The PCM adjusts the air/fuel ratio as needed depending on the MAF value.The Tech 2
reads the MAF value and displays it in terms of grams per second (gm/s).At idle, the Tech 2 should read between 4-7 gm/s on a fully warmed up
engine.Values should change quickly on acceleration.Values should remain stable at any given RPM.A failure in the MAF sensor or circuit will set DTC
P0101, DTC P0102, or DTC P0103.
