Diagnostic Procedures

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.

Perform On-Board Diagnostic (OBD) System Check. After performing OBD system check, go to next step.
Using scan tool, check for ABS/TCS related DTC(s). If DTC(s) are present, diagnose affected DTC(s) first. If other DTC(s) are not present, go to next step.
Check for intermittent terminal connection, intermittent open or short to the desired torque PWM input circuit between PCM connector C2 and EBTCM harness connector terminals. Repair as necessary. If circuit or terminal is okay, fault is not present. See DIAGNOSTIC AIDS.