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

  1. B1 CHECK CIRCUIT 15-AJ7 (GN/BU) FOR AN OPEN 
    • Key in ON position.
    • Operate the passenger window down and up from the driver window control switch.
    • Does the passenger window operate from the driver window control switch? 

    Yes  : GO to  B2.

    No  : VERIFY the CJB fuse 55 (25A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation.

  2. B2 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  B3.

    No  : GO to  B6.

  3. B3 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 C518-2, circuit 32-AJ26 (WH), harness side and ground.
      Fig 1: Checking For Voltage To Driver Window Regulator Motor Down Circuit
      G04654437Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 

    Yes  : GO to  B4.

    No  : GO to  B8.

  4. B4 CHECK CIRCUIT 33-AJ26 (YE) FOR AN OPEN 
    • Operate the driver window control switch to the up position.
    • Measure the voltage between the driver window regulator motor C518-1, circuit 33-AJ26 (YE), harness side and ground.
      Fig 2: Checking Circuit 33-AJ26 (YE) For Open
      G04654438Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 

    Yes  : GO to  B5.

    No  : REPAIR the circuit. TEST the system for normal operation.

  5. B5 CHECK FOR CONTINUITY BETWEEN THE DRIVER WINDOW REGULATOR MOTOR AND GROUND 
    • Key in OFF position.
    • Measure the resistance between the driver window regulator motor C518-2, circuit 32-AJ26 (WH), harness side and ground.
      Fig 3: Checking For Continuity Between Driver Window Regulator Motor And Ground
      G04654439Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 

    Yes  : INSTALL a new driver window regulator motor. REFER to WINDOW REGULATOR AND MOTOR - FRONT DOOR  in this article. TEST the system for normal operation.

    No  : INSTALL a new one-touch down relay. TEST the system for normal operation.

  6. B6 CHECK CIRCUIT 15S-AJ40 (GN/BK) FOR AN OPEN OR A SHORT TO GROUND 
    • Disconnect: Driver Window Control Switch C504b.
    • Measure the resistance between the driver window control switch C504b-11, circuit 15S-AJ40 (GN/BK), harness side and the one-touch down relay C546-3, circuit 15S-AJ40 (GN/BK), harness side; and between the driver window control switch C504b-11, circuit 15S-AJ40 (GN/BK), harness side and ground.
      Fig 4: Checking Circuit 15S-AJ40 (GN/BK) For Open Or Short To Ground
      G04654440Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms between the driver window control switch and the one-touch down relay, and greater than 10,000 ohms between the driver window control switch and ground? 

    Yes  : GO to  B7.

    No  : REPAIR the circuit. TEST the system for normal operation.

  7. B7 CHECK CIRCUIT 31-AJ15 (BK) FOR AN OPEN 
    • Key in OFF position.
    • Measure the resistance between the one-touch down relay C546-1, circuit 31-AJ15 (BK), harness side and ground.
      Fig 5: Checking Circuit 31-AJ15 (BK) For Open
      G04654441Courtesy 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.

  8. B8 CHECK CIRCUIT 15-AJ15 (GN/BK) FOR AN OPEN 
    • Disconnect: One-Touch Down Relay C546.
    • Measure the voltage between the one-touch down relay C546-2, circuit 15-AJ15 (GN/BK), harness side and ground.
      Fig 6: Checking Circuit 15-AJ15 (GN/BK) For Open
      G04654442Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 

    Yes  : GO to  B9.

    No  : REPAIR the circuit. TEST the system for normal operation.

  9. B9 CHECK CIRCUIT 32-AJ26 (WH) FOR AN OPEN 
    • Key in OFF position.
    • Measure the resistance between the one-touch down relay C546-5, circuit 32-AJ26 (WH), harness side and the driver window regulator motor C518-2, circuit 32-AJ26 (WH), harness side.
      Fig 7: Checking Circuit 32-AJ26 (WH) For Open
      G04654443Courtesy 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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