Test Conditions:

WARNING: This page is about a different car, the 1989 Cadillac Fleetwood and 1989 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

No problems on throttle switch, 4th gear, or MAP circuits.
Gear shift in Drive or Reverse.
Brake not applied.
ISC throttle switch open.
MAP less than or equal to 85 kPa.
Transmission is 4th gear (4th gear switch open).
RPM greater than or equal to 1400.