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.
- Check the connectors for poor connections or loose terminals.
- Make sure that the latest navigation software is installed.
- 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 code.
- After troubleshooting, enter the anti-theft code.

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

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

Is the connection OK?

YES -

Go to step 6.

NO -

Repair poor connections or loose terminals, and recheck.�

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 -

Go to step 9.

NO -

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

9. Substitute a known-good navigation display unit Navigation Display Unit Removal/Installation, and recheck.

Is the picture OK?

YES -

Replace the original navigation display unit Navigation Display Unit Removal/Installation.�

NO -

Substitute a known-good audio-navigation unit (including the HDD) Audio-Navigation Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation.�