Diagnostic Aids
WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
When the ignition is turned ON, the K85P Restraints Occupant Classification System (ROCS) module performs tests to diagnose critical malfunctions within itself. When the ROCS module has completed the power-up mode, the module will establish communication with other related modules. The module will set DTC U3000, and communicate with other related modules that an internal fault DTC has been set.