Display day/night mode does not work
NOTE:
- Turn the headlight on and check that the dash brightness setting is not set to high.
- Always check the connectors for poor connections or loose terminals.
- Before troubleshooting, make sure you have the navigation system anti-theft code.
- After troubleshooting, enter the navigation system anti-theft code.
- Turn the ignition switch ON (II).
- 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 3.
- Go into the Diagnostic Mode, and use the "Car Status" diagnostic to check for an ILL signal (see
CAR STATUS ).
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 small light relay. If OK, substitute a known-good navigation unit (see NAVIGATION UNIT REMOVAL/INSTALLATION ). and recheck.