Display Day/Night Mode Does Not Work
Display day/night mode does not workNOTE:
- Always check for and resolve all CAN DTCs before troubleshooting the navigation system.
- Always check the connectors for poor connections or loose terminals.
- Before troubleshooting, make sure you have the navigation system anti-theft codes.
- After troubleshooting, enter the navigation system anti-theft codes.
- Full brightness on with the headlights on (there is a separate dimmer mode for night and day) the instrument panel brightness control causes the system to stay in the day mode, even when the lights are on.
1. Turn the ignition switch ON (II).
2. Make sure the instrument panel brightness control is not on full brightness. Turn the headlights on, and adjust the dash brightness to the middle range.
3. Change the day/night mode to AUTO under Set-up and recheck.
Does the display change to day and night modes when turning the headlights on and off?
YES - Intermittent failure. The system is OK at this time.
NO - Go to step 4.
4. Go into the Diagnostic Menu and use the "Car Status" test to check for an ILL signal.
Is the "ILL" signal OK?
YES - Substitute a known-good display unit and recheck the symptom. If the problem goes away, replace the original display unit. If the problem does not go away, replace the gauge control module.
NO - Check the ILL+ circuit between the navigation unit and relay module.