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Pinpoint Test A: All Power Windows Are Inoperative

WARNING: This page is about a different car, the 2008 Mercury Sable, 2008 Ford Taurus X, and 2008 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
  1. A1 CHECK CIRCUIT CBP47 (GN/BU) FOR VOLTAGE 
    • Disconnect: LH Front Window Control Switch C504a
    • Key in ON position.
    • Measure the voltage between LH front window control switch C504a-5, circuit CBP47 (GN/BU), harness side and ground.
      • Fig 1: Measuring Voltage
      GF0016478Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A3.
    2. NO  : Go to  A2.
  2. A2 CHECK CIRCUIT CBP47 (GN/BU) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: SJB C2280d
    • Measure the resistance between LH front window control switch C504a-5, circuit CBP47 (GN/BU), harness side and SJB C2280d-32, circuit CBP47 (GN/BU), harness side.
      • Fig 2: Measuring Resistance
      GF0045452Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to Pinpoint Test H  to diagnose the accessory delay relay circuit.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  3. A3 CHECK CIRCUIT GD133 (BK) FOR AN OPEN 
    • Disconnect: LH Front Window Control Switch C504b
    • Measure the resistance between LH front window control switch C504b-4, circuit GD133 (BK), harness side and ground.
      • Fig 3: Measuring Resistance
      GF0016480Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new LH front window control switch. REFER to Window Control Switch . TEST the system for normal operation.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
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