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

- Turn the headlight on, and check that the dash brightness setting is not set to high.
- Verify that the correct audio-navigation unit is installed for this model. Go into the System Diagnostic Mode, and use the Version.
- Before troubleshooting, make sure you have the anti-theft code.
- After troubleshooting, enter the anti-theft code.
- Check the connectors for poor connections or loose terminals.
- Check any official Honda service website for more service information about the navigation system.

1. Turn the ignition switch to ON (ll).

2. Press the Day/Night () button to see if the display changes to day and night modes.

Does the display change to day and night modes when pressing the Day/Night button?

YES -

Go to step 3.

NO -

Go to Interface dial buttons do not work troubleshooting Symptom Troubleshooting.

3. Turn the headlights on, and adjust the dash brightness up and down, then to the middle range.

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. Check for the hard error code.

Are there any navigation DTCs indicated?

YES -

Troubleshoot the indicated navigation DTC(s).

NO -

Go to step 5.

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

6. Disconnect audio-navigation unit connector H (28P).

7. Turn the ignition switch to ON (ll).

8. With the headlight switch on, measure the voltage between body ground and audio-navigation unit connector H (28P) terminal No. 4.





Is there battery voltage?

YES -

Substitute a known-good audio-navigation unit (including the HDD) Audio-Navigation Unit Removal/Installation, then reconnect all of the connectors, and recheck. If the symptom/indication goes away, replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation. If the symptom/indication is still present, replace the navigation display unit Navigation Display Unit Removal/Installation.

NO -

Repair an open in the wire between the passenger's under-dash fuse/relay box and the audio-navigation unit.