Circuit/System Verification
WARNING: This page is about a different car, the 2020 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON.
- Verify there are no DTCs set.
- If any DTCs are set
- Go to next step: If no DTCs are set
- Use the following K124 Image Processing Module scan tool Disable History Data parameters as described in Diagnostic Aids to identify the potential cause of the Service Driver's Assist message to diagnose and repair as necessary:
- Adaptive Cruise Control Disengage History
- Adaptive Cruise Control Inhibit History
- Lane Keep Assist Event History
- Front Impact Mitigation Event History
- Drive the vehicle.
- Verify the parking assist indicator turns on and off when pressing and releasing the parking assist switch function properly, and there are no service messages displayed related to the system.
- If the parking assist system is not operating properly
Diagnose any faults in the system. Refer to:Parking Assist System Malfunction
- Go to next step: If the parking assist system is operating properly
- If the parking assist system is not operating properly
- Verify the lane keep assist and forward collision alert systems are able to be turned on and off using their respective control switches, function properly, and there are no service messages displayed related to either system.
- If the lane keep assist and forward collision alert system is not operating properly
Diagnose any faults in the system. Refer to:Symptoms - Driver Assistance Systems
- Go to next step: If the lane keep assist and forward collision alert system are operating properly
- If the lane keep assist and forward collision alert system is not operating properly
- Press and release the Adaptive Cruise Control Gap Switch. Verify the adaptive cruise control gap setting on the P9 Driver Information Center Display changes between Far, Medium, and Near with each button press.
- If the gap setting does not change
Diagnose any faults in the system. Refer to:Adaptive Cruise Control Malfunction
- Go to next step: If the gap setting changes
- If the gap setting does not change
- Drive the vehicle.
- Verify the adaptive cruise control system is able to be engaged and disengaged normally and all systems functions are operating as designed.
- If an adaptive cruise control system malfunction is identified
Diagnose any faults in the system. Refer to:Adaptive Cruise Control Malfunction
- Go to next step: If the adaptive cruise control system is operating as designed
- If an adaptive cruise control system malfunction is identified
- All OK. A fault is currently not present and may be an intermittent condition. Refer to Diagnostic Aids.