Circuit Description
WARNING: This page is about a different car, the 1996 Cadillac Seville, 1996 Cadillac Eldorado, and 1996 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
The PCM stores a calibrated time that it considers to be a valid spark knock duration. If PCM sees a knock event that is longer in duration that the acceptable stored time, DTC will set.