Display Day/Night Mode Does Not Work Or Does Not Work Properly (10 Model)

Navigation System Symptom Troubleshooting - Display day/night mode does not work or does not work properly

Display day/night mode does not work or does not work properly

Diagnostic: Car Status

NOTE:

- Check the vehicle battery condition first Testing and Inspection.
- Check the connectors for poor connections or loose terminals.
- Check if the Day mode color is set to same as the Night mode color (refer to the navigation system manual).
- Before troubleshooting, make sure you have the anti-theft codes for the audio system and the navigation system.
- After troubleshooting, enter the anti-theft codes for the audio system and the navigation system.
- Full brightness on the instrument panel brightness control with the head lights turned on causes the system to stay in the day mode, even when the lights are on.

1. Turn the ignition switch to 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 under Set-up to AUTO, and recheck.

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 4.

4. Go into the System Diagnostic Mode, and use the Car Status test to check for an ILL signal Navigation System Diagnostic Mode.

Is the ILL signal OK at this time?

YES -

Replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.�

NO -

Check the ILL+ circuit for an open or a short to ground between the audio-navigation unit and the No. 14 (7.5 A) fuse in the under-dash fuse/relay box. If OK, substitute a known-good audio-navigation unit Audio-Navigation Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation.�