Idle Speed Control (ISC) Motor - Cadillac
WARNING: This page is about a different car, the 1992 Oldsmobile Toronado, 1992 Cadillac Eldorado, and 1992 Buick Riviera. However, it is still accessible from the selected car via links, so may be relevant.
A malfunction in the ISC circuit will set a trouble code. For testing procedures, see appropriate G - TESTS W/ CODES article in this section. Also, see ISC minimum and maximum adjustment procedures in ADJUSTMENTS article in this section.