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Home >> Ford >> 2021 >> Expedition XL, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 109 (Sunroof - Roof Opening Panel - Vehicles With: Vista Roof Opening Panel) >> Diagnosis And Testing >> Roof Opening Panel >> Pinpoint Tests >> Pinpoint Test F : The Shield (Sunshade) Does Not Open Or Close >> Pinpoint Test F : The Shield (Sunshade) Does Not Open Or Close

Pinpoint Test F : The Shield (Sunshade) Does Not Open Or Close

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  1. F1 CHECK ROOF OPENING PANEL GLASS OPERATION

    • Ignition ON.

    • Press and hold roof opening panel open switch for 3 seconds.

    Does the roof opening panel open at least part way? 

    Yes  GO to  F2
    No  GO to Pinpoint Test E 

  2. F2 CHECK THE SHIELD CONTROL CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition OFF.

    • Disconnect Shield motor C9040 .

    • Disconnect Roof opening panel control switch C930 .

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C9040-2
      GFD200491Courtesy of FORD MOTOR COMPANY
      		 Ground
      C9040-4
      GFD200491Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  Repair the circuit.
    No  GO to  F3

  3. F3 CHECK THE SHIELD CONTROL CIRCUITS FOR A SHORT TO SHORT TO GROUND

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C9040-2
      GFD200490Courtesy of FORD MOTOR COMPANY
      		 Ground
      C9040-4
      GFD200490Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  F4
    No  REPAIR the circuit.

  4. F4 CHECK THE SHIELD CONTROL CIRCUITS FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C9040-2
      GFD200490Courtesy of FORD MOTOR COMPANY
      		 C930-22
      C9040-4
      GFD200490Courtesy of FORD MOTOR COMPANY
      		 C930-23

    Are the resistances less than 3 ohms? 

    Yes  GO to  F5
    No  REPAIR the circuit.

  5. F5 CHECK THE SHIELD CONTROL CIRCUITS FOR A SHORT TOGETHER

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  F6
    No  REPAIR the circuit.

  6. F6 CHECK THE ROOF OPENING PANEL MOTOR/MODULES AND SWITCH FOR CORRECT OPERATION

    • Ignition OFF.

    • Disconnect All roof opening panel system and related in-line connectors.

    • Check for:

      • corrosion - install new connector or terminals and clean module pins
      • damaged or bent pins - install new terminals or pins
      • pushed-out pins - install new pins as necessary

    • Connect all roof opening panel system and related in-line connectors and make sure they seat correctly.

    • Operate the system and verify the concern is still present.

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new roof opening panel motor and shield motor. Refer to: Roof Opening Panel Motor . TEST the system for normal operation. If the concern still exists, INSTALL a new roof opening panel control switch. REFER to: Roof Opening Panel Control Switch .
    No  The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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