Diagnostic Procedure

WARNING: This page is about a different car, the 1998 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

Check for Diagnostic Trouble Codes (DTCs). See RETRIEVING DIAGNOSTIC TROUBLE CODES (DTCS) . If no DTCs exist, proceed to TROUBLE SHOOTING and diagnose vehicle by symptom. If DTCs exist, go to TESTING - MEMORY SEAT MODULE (MSM) DIAGNOSTIC TROUBLE CODES (DTCs) or TESTING - MEMORY MIRROR MODULE (MMM) DIAGNOSTIC TROUBLE CODES and perform appropriate DTC test. After repair is complete, clear DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES (DTCS) . Recheck system operation.