ECM Chart A - Multiple Codes Stored Hard: Notes
WARNING: This page is about a different car, the 1990 Cadillac Seville and 1990 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.
The conditions, diagnosed by this chart, are caused by a single circuit failure and result in multiple diagnostic codes. If any of these conditions are met, follow the appropriate correction procedure before using the procedures for individual codes.