Circuit/System Testing

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Diagnose all vehicle DTCs before using this diagnostic.

With the scan tool, select instrument panel special functions Lamp Test. Command the instrument panel warning lamps On.

If the ABS warning lamp does not turn On, replace the IPC.
If the ABS lamp turns On and there are no DTCs stored in any vehicle systems, replace the EBCM.