Symptom Troubleshooting

Navigation System Symptom Troubleshooting - Picture has lines or rolls

Picture has lines, rolls, or is blurry

NOTE:

- Check the vehicle battery condition first Battery Test.
- Always compare the screen image to a known-good vehicle. If the screen looks the same, inform the customer that it is a characteristic of the system.
- Check the connectors for poor connections or loose terminals.
- Make sure that the correct navigation DVD color and version are installed.
- Inspect the navigation DVD for dirt or damage.
- Check any official Honda service website 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 the anti-theft codes for the audio system and the navigation system.
- After troubleshooting, enter the anti-theft codes 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. Turn the ignition switch to ON (II), and start up the navigation screen and check it.

Is the picture scrolling horizontally (left to right or right to left), has lines across the screen, or is blurry?

YES -

Go to step 4.

NO -

Go to step 3.

3. Go into the System Diagnostic Mode, and use the RGB Color test under the Monitor Check.

Is the picture missing a red, green, or blue color?

YES -

Do the Picture is missing a color or tone or is an odd color troubleshooting Symptom Troubleshooting.

NO -

Operation is normal at this time. Check for loose connections.

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

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

6. 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 7.

7. 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 8.

8. 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 -

Substitute a known-good navigation display unit Service and Repair, and recheck. If the symptom/indication goes away, replace the original navigation display unit Service and Repair. If the symptom/indication is still present, replace the navigation unit Service and Repair.

NO -

There is an open in the wire between the navigation unit and the navigation display unit. Replace the affected shielded harness.