Symptom Troubleshooting

Navigation System Symptom Troubleshooting - Picture has lines or rolls

Picture has lines or rolls

Diagnostic Test: Monitor Check

NOTE:

- Check the vehicle battery condition first Testing and Inspection.
- Check any official Honda service website for more service information about the navigation system.
- Always check the connectors for poor connections or loose terminals.
- Check for aftermarket accessories that may interfere with the navigation system.
- Make sure the correct navigation DVD (color and version) is installed.
- Inspect the navigation DVD for dirt or damage.
- Check the navigation screen settings for brightness, contrast, black level and the color screen for map color and menu color.
- For problems with the rearview camera, do the rearview camera does not come on or work properly troubleshooting.
- Before troubleshooting, make sure you have anti-theft code for the audio system and 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 picture.

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).

4. Disconnect navigation unit connector B (32P) and the navigation display unit 28P connector.

5. Check for continuity between navigation unit connector B (32P) terminal No. 18 and body ground.





Is there continuity?

YES -

There is a short to body ground in the wire between the 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 navigation unit connector B (32P) according to the table.









Is there continuity between any of the terminals?

YES -

There is a short in the wires between the navigation unit and the navigation display unit. Replace the affected shielded harness. �

NO -

Go to step 7.

7. Check for continuity between navigation unit connector B (32P) terminal No. 18 and navigation display unit 28P connector terminal No. 23.





Is there continuity?

YES -

Go to step 8.

NO -

There is an open in the wire between the 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 Service and Repair.�

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 navigation unit Service and Repair, and recheck. If the problem is gone, replace the original navigation unit Service and Repair.�