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 connectors for poor connections or loose terminals.
- Before troubleshooting, make sure you have the navigation system anti-theft codes.
- After troubleshooting, enter the anti-theft codes for the navigation system.
- Check for and resolve all CAN DTCs before troubleshooting the navigation system.
- Verify that the correct navigation unit is installed for this model. Go into the Diagnostic mode and use Version Navigation System Diagnostic Mode.
- Make sure that the correct DVD color and version are installed.
- Check any official Honda service website for more service information about the navigation system.
- Full brightness on the instrument panel brightness control when the headlights are turned on causes the system to stay in the day mode, even when the lights are on.

1. Adjust the A/C using voice command.

Can you control the A/C by voice command?

YES -

Go to step 2.

NO -

Do the symptom troubleshooting for Navigation cannot control HVAC by voice command. If the symptom/indication does not go away, substitute a known-good navigation unit Service and Repair. If the symptom/indication goes away, replace the original navigation unit. If the symptom/indication does not go away, substitute a known-good front climate control unit Front Climate Control Unit Removal/Installation. If the symptom/indication goes away, replace the original front climate control unit. If the symptom/indication does not go away, replace the gauge control module Service and Repair.�

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 -

Intermittent failure. The system is OK at this time. Check for loose or poor connections.�

NO -

Go to step 4.

4. Go into the Diagnostic Menu and use the Car Status test to check for an ILL+ and illumination cancel signals Navigation System Diagnostic Mode.

Is the ILL signals OK?

YES -

Go to step 5.

NO -

Check the ILL+ circuit between the navigation unit and No. 7 (7.5 A) fuse in the passenger's under-dash fuse/relay box.�

5. Check the illumi cancel signal.

Is the illumi cancel signal OK?

YES -

The system is OK at this time.�

NO -

Substitute a known-good navigation unit Service and Repair, front climate control unit Front Climate Control Unit Removal/Installation, and gauge control module Service and Repair, one at a time, in this order. Retest the system function after each unit substitution until the problem is resolved, then replace the malfunctioning unit.�