Picture Has Lines/Rolls/Other Issues
Picture has lines/rolls/other issuesNOTE:
- Always check the display settings in "setup".
- Always check the connectors for poor connections or loose terminals.
- Inspect the system for Non- OEM accessories like gaming consoles or TV tuners.
- Before troubleshooting, get the navigation system anti- theft codes.
- After troubleshooting, enter the navigation system anti- theft codes.
- Check for Non- OEM, setting and wrong DVD.
1. Check for electronic aftermarket accessories (possibly hidden) mounted near the navigation display or the navigation unit.
Are there any electronic accessories?
YES - Dissable 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 - Go to step 6.
NO - Go to step 3.
3. Go into the Diagnostic mode, and use the "RGB Color" test under Monitor Check.
Is the picture missing a red, green or blue color?
YES - Do the 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 OFF.
5. Substitute a known-good navigation display, and recheck.
Is the picture OK?
YES - Replace the navigation display.
NO - Replace the navigation unit.
6. Turn the ignition switch OFF.
7. Disconnect the navigation unit connector A (20P) and navigation display 20P connector.
8. Check for continuity between the navigation unit connector A (20P) terminal No. 12 to navigation display 20P connector terminal No. 19.
Is there continuity?
YES - Go to step 9.
NO - There is an open in the wire. Replace the affected shielded harness.
9. Check for continuity between navigation display 20P connector terminal No. 19 and terminal No. 20.
Is there continuity?
YES - There is a short to body ground in the circuit between the navigation display and the navigation unit. Replace the affected shielded harness.
NO - Replace the navigation unit. If the problem still doesn't go away, replace the navigation display.