Mass Air Flow (MAF) Sensor

The mass air flow (MAF) sensor directly measures the mass of the air flowing into the engine. The sensor output is a DC (analog) signal ranging from about 0.5 volt to 5.0 volts by the PCM to calculate the injector pulse width for the correct air fuel combustion ratio. The MAF sensor input is used for EPC pressure control, shift and torque converter clutch (TCC) control.