Picture Has Lines or Rolls

Picture has lines or rolls

Diagnostic Test: Monitor Check

NOTE:
- Always make sure that the correct DVD color and version are installed.
- Check any official Honda Web site for more service information about the navigation system.
- 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.
- Always check the connectors for poor connections or loose terminals.
- Before troubleshooting, make sure you have the navigation and audio system anti-theft codes.

1. Check for electronic aftermarket accessories (possibly hidden) mounted near the 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).
3. Start up the navigation picture.

Is the picture scrolling horizontally (left to right or right to left)?

YES - Check for an open or short to ground in the C SIG wire from navigation unit connector A (20P) No. 12 terminal to navigation display unit 20P connector No. 19 terminal. Also check for a short to ground between navigation display unit 20P connector No. 19 terminal and No. 20 terminal.

NO - Go to step 4.

4. Go into the Diagnostic mode, and use "RGB Color" diagnostic under Monitor Check.

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

YES - Do troubleshooting for the picture is missing a color or tone or is an odd color.

NO - Go to step 5.

5. Turn the ignition switch to LOCK (0).
6. Substitute a known-good navigation display unit, 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 navigation unit and recheck. If the problem is gone, replace the original navigation unit.