Test Conditions:
WARNING: This page is about a different car, the 1988 Cadillac Seville and 1988 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.
With ISC throttle switch closed, engine speed at less than or equal to 700 RPM, TPS position should be less than or equal to 12 degrees. With ISC throttle switch open, TPS position should be greater than or equal to 9.6 degrees.