Symptom Troubleshooting

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

NOTE:

- Check the vehicle battery condition first. Testing and Inspection

- Check the connectors for poor connection or loose terminals.

- Before troubleshooting, get the navigation system anti-theft code.

- After troubleshooting, enter the navigation system anti-theft code.

- 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.

- Check any official Honda service website for more service information about the navigation system.

1. 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.

2. 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 3.


3. 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?
YES - Replace the audio-navigation unit. Audio-Navigation Unit Removal/Installation (With Navigation)

NO - Check the ILL+ circuit between the audio-navigation unit and the No. 14 (7.5 A) fuse in the under-dash fuse/relay box.