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Pinpoint Test B: Both Front 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

  2. B1 CHECK FOR VOLTAGE TO THE MASTER WINDOW CONTROL SWITCH

    • Ignition OFF.

    • Disconnect: Master Window Control Switch C504B.

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C504B-6
      GFD574097Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts? 

    Yes  GO to  B2
    No  REPAIR the circuit.

  3. B2 CHECK THE MASTER WINDOW CONTROL SWITCH GROUND CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C504B-2
      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.
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