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Pinpoint Test A: All Power Windows Are Inoperative

WARNING: This page is about a different car, the 2004 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
  1. A1 CHECK THE SMART JUNCTION BOX (SJB) DTCs 
    • Carry out the SJB on-demand self test.
    • Are any DTCs recorded? 
    1. Yes  : REFER to the SJB Diagnostic Trouble Code Index .
    2. No  : GO to A2.
  2. A2 CHECK THE VOLTAGE TO THE DRIVER WINDOW CONTROL SWITCH - CIRCUIT 400 (LB/BK) 
    • Key in OFF position.
    • Disconnect: Driver Window Control Switch C504.
    • Key in ON position.
    • Measure the voltage between the driver window control switch C504-2, circuit 400 (LB/BK), harness side and ground.
      Fig 1: Checking Voltage To Driver Window Control Switch - Circuit 400 (LB/BK)
      G03277681Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    1. Yes  : GO to A3.
    2. No  : GO to  A4.
  3. A3 CHECK THE GROUND TO THE DRIVER WINDOW CONTROL SWITCH - CIRCUIT 57 (BK) 
    • Key in OFF position.
    • Measure the resistance between driver window control switch C504-5, circuit 57 (BK), harness side and ground.
      Fig 2: Checking Ground To Driver Window Control Switch - Circuit 57 (BK)
      G03277682Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes  : GO to A4.
    2. No  : REPAIR the circuit. TEST the system for normal operation.
  4. A4 CHECK CIRCUIT 400 (LB/BK) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: SJB C2280c.
    • Measure the resistance between driver window control switch C504-2, circuit 400 (LB/BK), harness side and SJB C2280c-20, circuit 400 (LB/BK).
      Fig 3: Checking Circuit 400 (LB/BK) For An Open
      G03277683Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes  : GO to A5.
    2. No  : REPAIR the circuit. TEST the system for normal operation.
  5. A5 CHECK THE DRIVER POWER WINDOW SWITCH 
    • Remove the driver window control switch.
    • Carry out the driver window control switch component test.
    • Refer to the appropriate SYSTEM WIRING DIAGRAMS for schematic and connector information.
    • Did the driver window control switch pass the component test? 
    1. Yes  : Go To PINPOINT TEST E: THE DELAYED ACCESSORY RELAY IS INOPERATIVE/DOES NOT OPERATE CORRECTLY .
    2. No  : INSTALL a new driver window control switch. TEST the system for normal operation.
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