Idle Control System
WARNING: This page is about a different car, the 1998 Cadillac Seville, 1998 Cadillac Eldorado, and 1998 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Manufacturer does not provide system testing for 4.6L. For idle control system testing not listed, perform related DTC testing procedure. See DIAGNOSTIC TROUBLE CODES in TESTS W/CODES
article.