Picture Has Lines or Rolls

Picture has lines or rolls

Diagnostic Test: Monitor Check

NOTE:
- Check the vehicle battery condition first.
- Always check the navigation screen settings for brightness, black level and the color screen for map color and menu color.
- Always check the connectors for poor connections or loose terminals.
- Before troubleshooting, make sure you have the anti-theft codes for the audio system and the navigation system.
- Always make sure that the correct DVD color and version are installed.
- Inspect the DVD for dirt or damage.
- Check on-line for service bulletins or other service information for the navigation system.
- Enter the anti-theft codes for the audio system and the navigation system.

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. 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 CSIG wire from navigation unit connector A (20P) No. 12 terminal to display unit 20P connector No. 19 terminal. Also check for a short to ground between display unit 20P connector No. 19 terminal and No. 20 terminal.

NO - Go to step 3.

3. 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 4.

4. Turn the ignition switch to LOCK (0).
5. Substitute a known-good display unit, and recheck.

Is the picture OK?

YES - Check for loose connections, then replace the original 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.