| 1. | Go into the Diagnostic Menu, and use ‘‘RGB Color'' test under Monitor Check. Are the red, green, and blue colored circles shown? YES - The system is OK at this time.n NO - Go to 2. |
| 2. | Turn the ignition switch to OFF. |
| 3. | Disconnect navigation unit connector A (20P) and the navigation display 20P connector. |
| 4. | Check for loose terminals at navigation unit connector A (20P) and the navigation display 20P connector. Are there loose terminals? YES - Repair the terminal.n NO - Go to 5. |
| 5. | Check for continuity between the appropriate terminals of navigation unit connector A (20P) and the navigation display 20P connector based on the missing color(s).
Is there continuity? YES - Go to 6. NO - There is an open in the circuit between the navigation display and the navigation unit. Check for poor connections or loose terminals at the display and navigation units. If a poor connection or loose terminal is found, replace the affected shielded harness.n |
| 6. | Check for continuity between the appropriate terminals of navigation unit connector A (20P) and the navigation display 20P connector besed on the missing color(s).
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.n NO - Replace the navigation unit. If the problem is still unresolved, replace the navigation display.n |