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Pinpoint Test C: Both Rear Power Windows Are Inoperative

  1. Refer to POWER WINDOWS for schematic and connector information.

    Normal Operation and Fault Conditions 

    REFER to: Glass, Frames and Mechanisms - Vehicles With: One-Touch Open Driver Window - System Operation and Component Description .

    Possible Sources 

    • Fuse
    • Wiring, terminals or connectors
    • Master window control switch

    Visual Inspection and Pre-checks 

    • Make sure the master window control lock-out switch is in the UNLOCK position.

  2. C1 CHECK FOR VOLTAGE TO THE LH (LEFT-HAND) REAR WINDOW CONTROL SWITCH

    • Ignition OFF.

    • Disconnect: LH Rear Window Control Switch C717.

    • Ignition ON.

    • Make sure the rear passenger window lock-out switch is in the UNLOCK position.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C717-2
      GFD574097Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts? 

    Yes  GO to  C2
    No  GO to  C3

  3. C2 CHECK THE MASTER WINDOW CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Disconnect: Master Window Control Switch C504C.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C504C-3
      GFD574098Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance less than 3 ohms? 

    Yes  INSTALL a new master window control switch. REFER to: Front Door Window Control Switch .
    No  REPAIR the circuit.

  4. C3 CHECK FOR VOLTAGE TO THE MASTER WINDOW CONTROL SWITCH

    • Ignition OFF.

    • Disconnect: Master Window Control Switch C504C.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C504C-4
      GFD574097Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts? 

    Yes  GO to  C4
    No  REPAIR the circuit.

  5. C4 CHECK THE LH (LEFT-HAND) REAR WINDOW CONTROL SWITCH VOLTAGE CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C717-2
      GFD574098Courtesy of FORD MOTOR COMPANY
      		 C504C-8

    Is the resistance less than 3 ohms? 

    Yes  INSTALL a new master window control switch. REFER to: Front Door Window Control Switch .
    No  REPAIR the circuit.
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