Symptom Troubleshooting

Symptom Troubleshooting: Picture has lines or rolls

Picture has lines or rolls

Diagnostic Test: Monitor Check

NOTE:

- Check the vehicle battery condition first.

- Always compare the screen image to a known-good vehicle. If the screen looks the same, inform the client that it is a characteristic of the system.

- Check the connectors for poor connections or loose terminals.

- Make sure that the latest navigation software is installed.

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

- Check the navigation screen settings for brightness, contrast, and black level, and check the color screen for map color and menu color.

- Before troubleshooting, make sure you have anti-theft codes for the navigation system.

- After troubleshooting, enter the anti-theft codes for the navigation system.

1. Check for electronic aftermarket accessories (possibly hidden) mounted near the navigation display unit or the navigation unit.

Are there any electronic accessories?
YES - Disable the accessories, and recheck.

NO - Go to step 2.


2. Start up the navigation system (screen).

Is the picture scrolling horizontally (left to right or right to left)?
YES - Go to step 3.

NO - Intermittent failure.


3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

4. Disconnect navigation unit connector G (16P) and the navigation display unit 32P connector.

5. Check for continuity between audio-navigation unit connector G (16P) terminal No. 16 and body ground.

Is there continuity?
YES - There is a short to body ground in the wire between the audio-navigation unit and the navigation display unit. Replace the affected shielded harness.

NO - Go to step 6.






6. Check for continuity between the terminals of audio-navigation unit connector G (16P) according to the table.





Is there continuity between any of the terminals?
YES - Go to step 7.

NO - There is a short in the wire(s) between the audio-navigation unit and the navigation display unit. Replace the affected shielded harness.






7. Check for continuity between audio-navigation unit connector G (16P) terminal No.16 and navigation display unit 28P connector terminal No. 15.

Is there continuity?
YES - Go to step 8.

NO - There is an open in the wire(s) between the audio-navigation unit and the navigation display unit. Replace the affected shielded harness.






8. Substitute a known-good navigation display unit, Service and Repair and recheck.

Is the picture OK?
YES - Check for loose connections, then replace the original navigation display unit.

NO - Check for loose connections, and recheck. If a poor connection or loose terminal is found, replace the shielded harness. If no poor or loose terminals are found, substitute a known-good audio-navigation unit (including the HDD), Audio-Navigation Unit Removal/Installation (With Navigation) and recheck. If the problem is gone, replace the original audio-navigation unit.