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Pinpoint Test B: A Single Power Window Is Inoperative - Front And Rear Power Windows - Driver Power Window

  1. B1 CHECK FOR IGNITION VOLTAGE TO THE DRIVER WINDOW CONTROL SWITCH 
    • Key in ON position.
    • Do the driver window control switch LEDs illuminate? 
      • Yes  : Go to  B2.
      • No  : Go to  B7.
  2. B2 CHECK FOR SWITCH VOLTAGE TO THE DRIVER WINDOW CONTROL SWITCH 
    • Operate the driver window control switch.
    • Does the passenger window operate from the driver window control switch? 
      • Yes  : Go to  B3.
      • No  : REPAIR the circuit. TEST the system for normal operation.
  3. B3 CHECK THE ONE-TOUCH DOWN RELAY 
    • Operate the driver window control switch to the first detent in the DOWN position.
    • Does the one-touch down relay click? 
      • Yes  : Go to  B4.
      • No  : Go to  B9.
  4. B4 CHECK FOR VOLTAGE TO THE DRIVER WINDOW REGULATOR MOTOR DOWN CIRCUIT 
    • Key in OFF position.
    • Disconnect: Driver Window Regulator Motor C518.
    • Key in ON position.
    • Operate the driver window control switch to the first detent in the DOWN position.
    • Measure the voltage between the driver window regulator motor C518 pin 2, circuit 32-AJ26 (WH), harness side and ground.
      Fig 1: Measuring Voltage Between Driver Window Regulator Motor C518 Pin 2, Circuit 32-AJ26 (WH), Harness Side And Ground
      G03952826Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
      • Yes  : Go to  B5.
      • No  : Go to  B12.
  5. B5 CHECK FOR VOLTAGE TO THE DRIVER WINDOW REGULATOR MOTOR UP CIRCUIT 
    • Operate the driver window control switch to the UP position.
    • Measure the voltage between the driver window regulator motor C518 pin 1, circuit 33-AJ26 (YE), harness side and ground.
      Fig 2: Measuring Voltage Between Driver Window Regulator Motor C518 Pin 1, Circuit 33-AJ26 (YE), Harness Side And Ground
      G03952827Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
      • Yes  : Go to  B6.
      • No  : REPAIR the circuit. TEST the system for normal operation.
  6. B6 CHECK FOR CONTINUITY BETWEEN THE DRIVER WINDOW REGULATOR MOTOR AND GROUND 
    • Key in OFF position.
    • Measure the resistance between the driver window regulator motor C518 pin 2, circuit 32-AJ26 (WH) and ground.
      Fig 3: Measuring Resistance Between Driver Window Regulator Motor C518 Pin 2, Circuit 32-AJ26 (WH) And Ground
      G03952828Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
      • Yes  : INSTALL a new window regulator motor. REFER to DOOR WINDOW REGULATOR MOTOR . TEST the system for normal operation.
      • No  : INSTALL a new one-touch down relay. TEST the system for normal operation.
  7. B7 CHECK FOR VOLTAGE TO THE DRIVER WINDOW CONTROL SWITCH 
    • Key in OFF position.
    • Disconnect: Driver Window Control Switch C504b.
    • Key in ON position.
    • Measure the voltage between the driver window control switch C504b pin 14, circuit 15-LH14 (GN/YE), harness side and ground.
      Fig 4: Measuring Voltage Between Driver Window Control Switch C504b Pin 14, Circuit 15-LH14 (GN/YE), Harness Side And Ground
      G03952825Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
      • Yes  : Go to  B8.
      • No  : REPAIR the circuit. TEST the system for normal operation.
  8. B8 CHECK THE DRIVER WINDOW CONTROL SWITCH GROUND CIRCUIT 
    • Key in OFF position.
    • Disconnect: Driver Window Control Switch C504a.
    • Measure the resistance between the driver window control switch C504a pin 3, circuit 31-AJ7 (BK), harness side and ground.
      Fig 5: Measuring Resistance Between Driver Window Control Switch C504a Pin 3, Circuit 31-AJ7 (BK), Harness Side And Ground
      G03952824Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
      • Yes  : VERIFY the customer concern.
      • No  : REPAIR the circuit. TEST the system for normal operation.
  9. B9 CHECK FOR SWITCHED VOLTAGE TO THE ONE-TOUCH DOWN RELAY 
    • Key in OFF position.
    • Disconnect: One-Touch Down Relay C546.
    • Key in ON position.
    • Operate the driver window control switch to the first detent in the DOWN position.
    • Measure the voltage between the one-touch down relay C546 pin 3, circuit 15S-AJ40 (GN/BK), harness side and ground.
      Fig 6: Measuring Voltage Between One-Touch Down Relay C546 Pin 3, Circuit 15S-AJ40 (GN/BK), Harness Side And Ground
      G03952831Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
      • Yes  : Go to  B10.
      • No  : REPAIR the circuit. TEST the system for normal operation.
  10. B10 CHECK FOR IGNITION VOLTAGE TO THE ONE-TOUCH DOWN RELAY 
    • Measure the voltage between the one-touch down relay C546 pin 2, circuit 15-AJ15 (GN/BK), harness side and ground.
      Fig 7: Measuring Voltage Between One-Touch Down Relay C546 Pin 2, Circuit 15-AJ15 (GN/BK), Harness Side And Ground
      G03952832Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
      • Yes  : Go to  B11.
      • No  : REPAIR the circuit. TEST the system for normal operation.
  11. B11 CHECK FOR CONTINUITY BETWEEN THE ONE-TOUCH DOWN RELAY AND GROUND 
    • Key in OFF position.
    • Measure the resistance between the one-touch down relay C546 pin 1, circuit 31-AJ15 (BK), harness side and ground.
      Fig 8: Measuring Resistance Between One-Touch Down Relay C546 Pin 1, Circuit 31-AJ15 (BK), Harness Side And Ground
      G03952833Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
      • Yes  : INSTALL a new one-touch down relay. TEST the system for normal operation.
      • No  : REPAIR the circuit. TEST the system for normal operation.
  12. B12 CHECK FOR CONTINUITY BETWEEN THE DRIVER WINDOW REGULATOR MOTOR AND THE ONE-TOUCH DOWN RELAY 
    • Key in OFF position.
    • Disconnect: One-Touch Down Relay C546.
    • Measure the resistance between the driver window regulator motor C518 pin 2, circuit 32-AJ26 (WH), harness side and the one-touch down relay C546 pin 5, circuit 32-AJ26 (WH), harness side.
      Fig 9: Checking For Continuity Between Driver Window Regulator Motor And One-Touch Down Relay
      G03952834Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
      • Yes  : INSTALL a new one-touch down relay. TEST the system for normal operation.
      • No  : REPAIR the circuit. TEST the system for normal operation.
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