Display Day/Night Mode Does Not Work
Display day/night mode does not workNOTE:
- Check that the dash brightness setting is not set to high.
- Always check the connectors for poor connections or loose terminals.
- Before troubleshooting, get the navigation system anti-theft codes.
- After troubleshooting, enter the anti-theft codes for the audio system and navigation system.
1. Turn the headlights on, and adjust the dash brightness to the middle range.
Does the display change to day and night modes when turning the headlights on and off?
YES - The system is OK at this time.
NO - Go to step 2.
2. Go into the Diagnostic Mode, and use the "Car Status" diagnostic to check for an ILL signal.
Is the "ILL" signal OK?
YES - The system is OK.
NO - Check the ILL+ circuit for an open or short to ground between the navigation unit and gauge control module. If OK, substitute a known-good navigation unit and recheck.