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Pinpoint Test A: A Single Power Window Is Inoperative - Power Sliding Window

WARNING: This page is about a different car, the 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. A1 CHECK VOLTAGE TO THE REAR WINDOW ADJUST SWITCH 
    • Disconnect: Power Sliding Window Switch C203
    • Key in ON position.
    • Measure the voltage between power sliding window switch C203-2, circuit 400 (LB/BK) harness side and ground.
      Fig 1: Checking Voltage To Rear Window Adjust Switch
      GF0005136Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  A2.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  2. A2 CHECK GROUND TO THE POWER SLIDING WINDOW SWITCH 
    • Key in OFF position.
    • Measure the resistance between power sliding window switch C203-3, circuit 57 (BK) harness side and ground; and between power sliding window switch C203-6, circuit 57 (BK) harness side and ground.
      Fig 2: Checking Ground To Power Sliding Window Switch
      GF0005137Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
    1. YES  : Go to  A3.
    2. NO  : REPAIR the circuit(s). TEST the system for normal operation.
  3. A3 CHECK THE POWER SLIDING WINDOW SWITCH 
    • Key in ON position.
    • Connect a fused jumper between power sliding window switch C203-2, circuit 400 (LB/BK) and C203-1, circuit 405 (VT/LB) harness side; and between power sliding window switch C203-7, circuit 404 (VT/LG) and C203-6, circuit 57 (BK) harness side. The power sliding window should close.
      Fig 3: Checking Power Sliding Window Switch (1 Of 2)
      GF0005138Courtesy of FORD MOTOR CO.
    • Connect a fused jumper between power sliding window switch C203-2, circuit 400 (LB/BK) and C203-7, circuit 404 (VT/LG) harness side; and between power sliding window switch C203-1, circuit 405 (VT/LB) and C203-3, circuit 57 (BK) harness side. The power sliding window should open.
      Fig 4: Checking Power Sliding Window Switch (2 Of 2)
      GF0005139Courtesy of FORD MOTOR CO.
    • Did the power sliding window OPEN and CLOSE? 
    1. YES  : INSTALL a new power sliding window switch. TEST the system for normal operation.
    2. NO  : REMOVE the jumper wires. Go to  A4.
  4. A4 CHECK CIRCUIT 404 (VT/LG) AND CIRCUIT 405 (VT/LB) FOR AN OPEN 
    • Measure the resistance between power sliding window motor C301-1, circuit 404 (VT/LG) and power sliding window switch C203-7, circuit 404 (VT/LG) harness side; and between power sliding window motor C301-2, circuit 405 (VT/LB) and power sliding window switch C203-1, 405 (VT/LB) harness side.
      Fig 5: Checking Circuit 404 (VT/LG) And Circuit 405 (VT/LB) For Open
      GF0005140Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
    1. YES  : INSTALL a new rear window motor. TEST the system for normal operation.
    2. NO  : REPAIR the circuit(s). TEST the system for normal operation.
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