Circuit Description
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 1997 GMC Yukon, 1997 GMC Suburban, 1997 GMC Pickup, 1997 GMC Cab & Chassis, and 1997 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
Mass Airflow (MAF) sensor measure amount of air entering engine at a given time to determine fuel delivery. MAF sensor produces a frequency signal of 2000 Hz at idle to 8000 Hz at maximum engine load. DTC will set if MAF signal is less than possible range of a normally operating MAF sensor. DTC will test when the following conditions are present: