Symptom Troubleshooting

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

NOTE:

- Check the vehicle battery condition first Testing and Inspection.
- Check the connectors for poor connection or loose terminals.
- Check any official Honda service website for more service information about the navigation system.
- Before troubleshooting, make sure you have the anti-theft code.
- After troubleshooting, enter the 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.

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.

Is the ILL signal OK?

YES -

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

NO -

Go to step 4.

4. Turn the ignition switch to LOCK (0).

5. Disconnect audio-navigation unit connector A (24P).

- Eject all the CDs before removing the audio-navigation unit to prevent damaging the CD player's load mechanism.
- Remove the PC card before removing the audio-navigation unit.

6. With the headlight switch on, measure the voltage between body ground and audio-navigation unit connector A (24P) terminal No. 13.





Is there battery voltage?

YES -

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

NO -

Repair an open or short in the wire between the audio-navigation unit and the under-hood fuse/relay box.�