Symptom Troubleshooting

Navigation System Symptom Troubleshooting - Picture has lines, rolls, or is blurry

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 client that it is a characteristic of the system.
- Make sure that the latest navigation software is installed.
- 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 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. Check for electronic aftermarket accessories (possibly hidden) mounted near the navigation display unit or the audio-navigation unit.

Are there any electronic accessories?

YES -

Remove the accessories, and recheck.

NO -

Go to step 2.

2. Turn the ignition switch to ON (II), and 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, the system is OK at this time.

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

4. Check for poor connections or loose terminals at audio-navigation unit connector G (8P) and the navigation display unit 28P connector.

Are the connections or terminals OK?

YES -

Go to step 5.

NO -

Repair poor connections or loose terminals, and recheck.

5. Disconnect audio-navigation unit connector G (8P) and the navigation display unit 28P connector.

6. Check for continuity between audio-navigation unit connector G (8P) terminal No. 2 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 7.

7. Check for continuity between the terminals of audio-navigation unit connector G (8P) according to the table.









Is there continuity between any of the terminals?

YES -

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

NO -

Go to step 8.

8. Check for continuity between audio-navigation unit connector G (8P) terminal No. 2 and navigation display unit 28P connector terminal No. 3.





Is there continuity?

YES -

Substitute a known-good navigation display unit Navigation Display Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original navigation display unit Navigation Display Unit Removal/Installation. If the symptom/indication is still present, replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.

NO -

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