Picture Has Lines/Other Issues
Picture has lines/other issuesDiagnostic Test: Monitor Check
NOTE:
- Always check the connectors for poor connections or loose terminals.
- Before troubleshooting, get the navigation system anti-theft codes.
- After troubleshooting, enter the navigation system anti-theft codes.
1. Check for electronic aftermarket accessories (passibly 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 C SIG wire from navigation unit connector A (20P) terminal No.12 to display unit 20P connector terminal No.19. Also check for a short to ground between display unit 20P connector terminal No.19 and terminal No.20.
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 red, green or blue color or tone.
NO - Go to step 4.
4. Turn the ignition switch OFF.
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.