High frequency test

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 1997 GMC Savana Special, 1997 GMC Savana Camper Special, 1997 GMC Savana, 1997 Chevrolet RV Cutaway, and 1997 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

Engine is running.
Engine run time is at least 0.4 second.
System voltage is at least 8 volts.
Throttle position is less than 89.8 percent.
MAF sensor is at least 10.44 Hz.
Conditions are present for zero seconds.