Circuit/System Verification
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.
- Ignition ON, Clear the DTC. Observe the scan tool BCM Brake Applied Output Signal parameter. The parameter should change from ON to OFF when the brake pedal is depressed and released.
- If the parameter does not change, refer to Stop Lamps Malfunction .
- Ignition ON, observe the scan tool BCM Shift Lock Command parameter. The parameter should change from ON to OFF when the brake pedal is depressed and released.
- If the parameter does not change, replace the BCM.