Air Flow Meter/Sensor: Testing and Inspection

The scan tool reads the MAF value and displays it in grams per second (gm/Sec). At idle, it should read between 5-7 gm/Sec on a fully warmed up engine.

Values should change rather quickly on acceleration, but values should remain fairly stable at any given RPM. When the VCM detects a malfunction in the MAF sensor circuit, the following Diagnostic Trouble Code (DTC)s will set:

^ DTC P0101 system performance.
^ DTC P0102 frequency low.
^ DTC P0103 frequency high.