Pinpoint Test F: Navigation System Does Not Operate Correctly - The Navigation Screen Is Inoperative

WARNING: This page is about a different car, the 2005 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.

F1 CHECK THE SWITCH DISPLAY
- Key in ON position.
- Turn the audio unit on.
- Press and hold the AUDIO and MENU buttons for 5 seconds.
  
  Fig 1: Pressing AUDIO And MENU Buttons
  Courtesy of FORD MOTOR CO.
- Press 917 Enter.
  
  Fig 2: Pressing 917 Enter
  Courtesy of FORD MOTOR CO.
- Select Manual Check.
  
  Fig 3: Selecting Manual Check
  Courtesy of FORD MOTOR CO.
- Select Hard Switch Test.
  
  Fig 4: Selecting Hard Switch Test
  Courtesy of FORD MOTOR CO.
- Push each switch on the display.
  
  Fig 5: Pushing Switches On Display
  Courtesy of FORD MOTOR CO.
- Are all of the switches operating correctly?
- Yes : GO to F2.
- No : REMOVE the audio unit and SEND it to an authorized Ford audio system repair facility. REFER to AUDIO UNIT . TEST the system for normal operation.
F2 CHECK THE MAP DISC SURFACE
- Key in OFF position.
- Key in ON position.
- Remove and visually inspect the map disc surface.
- Is the map disc dirty or scratched?
- Yes : INSTALL a new map disc. TEST the system for normal operation.
- No : REINSTALL the map disc. GO to F3.
F3 CHECK THE MAP DISPLAY
- Key in OFF position.
- Key in ON position.
- Press the MAP button.
  
  Fig 6: Identifying Audio/Map/Navigation Buttons
  Courtesy of FORD MOTOR CO.
- Is the map displayed?
- Yes : The system is operating correctly at this time.
- No : GO to F4.
F4 CHECK FOR CORRECT NAVIGATION SYSTEM MODULE OPERATION
- Disconnect all the navigation system module connectors.
- Check for:
  - corrosion
  - pushed-out pins
- Connect all the navigation system module connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes : INSTALL a new navigation system module. REFER to NAVIGATION SYSTEM MODULE . TEST the system for normal operation.
- No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.