Test Conditions (2):
WARNING: This page is about a different car, the 1990 Cadillac Seville and 1990 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.
ISC throttle switch open, engine speed at less than or equal to 1800 RPM, throttle angle less than or equal to 18 degrees and not in Park or Neutral.