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Pinpoint Test C: A Single Power Window is Inoperative - Passenger Front

WARNING: This page is about a different car, the 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.

Refer to appropriate SYSTEM WIRING DIAGRAMS article, Power Windows for schematic and connector information.

Normal Operation 

Voltage is supplied to the passenger front window control switch from the driver window control switch through circuit 170 (RD/LB). If the driver window control switch is in the lock position, the circuit is open and the window does not operate from the passenger front window control switch.

When operating the passenger front window in the down position, ground is received from the driver window control switch through circuit 313 (WH/YE). Voltage is supplied to the passenger front window motor through circuit 333 (YE/RD) and ground through circuit 334 (RD/YE).

When operating the passenger front window in the up direction, ground is received from the driver window control switch through circuit 314 (TN/LB). Voltage is supplied to the passenger front window motor through circuit 334 (RD/YE) and ground through circuit 333 (YE/RD).

When the passenger front window is operated in the down direction from the driver window control switch, voltage is sent to the passenger front window control switch through circuit 314 (TN/LB), which transfers voltage to the passenger front window motor through circuit 333 (YE/RD). Ground is provided to the RH front window control switch through circuit 313 (WH/YE), which transfers ground to the passenger front window motor through circuit 334 (RD/YE). When the passenger front window is operated in the up direction from the driver window control switch, voltage is sent to the passenger front window control switch through circuit 313 (WH/YE), which transfers voltage to the passenger front window motor through circuit 334 (RD/YE). Ground is provided to the passenger front window control switch through circuit 314 (TN/LB), which transfers ground to the passenger front window motor through circuit 333 (YE/RD).

This pinpoint test is intended to diagnose the following:

PINPOINT TEST C: A SINGLE POWER WINDOW IS INOPERATIVE - PASSENGER FRONT 

  1. C1 CHECK THE OPERATION FROM THE DRIVER WINDOW CONTROL SWITCH 
    • Key in ON position.
    • Operate the front passenger window from the driver window control switch.
    • Does the front passenger window operate from the driver window control switch? 
    1. YES  : VERIFY the window lock button is off. If button is off, go to  C10.
    2. NO  : Go to  C2.
  2. C2 CHECK THE DOWN INPUT TO THE WINDOW MOTOR 
    • Key in OFF position.
    • Disconnect: Front Passenger Window Motor C608
    • Key in ON position.
      • Fig 1: Checking Circuit For Voltage
      GF0013146Courtesy of FORD MOTOR CO.
    • While pressing the driver window control switch to the front passenger DOWN position, measure the voltage between the front passenger window motor C608-2, circuit 333 (YE/RD), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  C6.
    2. NO  : Go to  C3.
  3. C3 CHECK THE DOWN INPUT TO THE FRONT PASSENGER WINDOW CONTROL SWITCH 
    • Disconnect: Front Passenger Window Control Switch C604
      • Fig 2: Checking Circuit For Voltage
      GF0013147Courtesy of FORD MOTOR CO.
    • While pressing the driver window control switch to the passenger window DOWN position, measure the voltage between the front passenger window control switch C604-5, circuit 314 (TN/LB), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  C5.
    2. NO  : Go to  C4.
  4. C4 CHECK CIRCUIT 314 (TN/LB) FOR AN OPEN OR A SHORT TO GROUND 
    • Key in OFF position.
    • Disconnect: Driver Window Control Switch C504a
      • Fig 3: Checking Circuit For Open Or Short To Ground
      GF0013148Courtesy of FORD MOTOR CO.
    • Measure the resistance between front passenger window control switch C604-5, circuit 314 (TN/LB), harness side and driver window control switch C504a-8, circuit 314 (TN/LB), harness side; and between front passenger window control switch C604-5, circuit 314 (TN/LB), harness side and ground.
    • Is the resistance less than 5 ohms between the passenger window control switch and driver window control switch, and greater than 10,000 ohms between the passenger window control switch and ground? 
    1. YES  : INSTALL a new driver window control switch. TEST the system for normal operation.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  5. C5 CHECK CIRCUIT 333 (YE/RD) FOR AN OPEN OR A SHORT TO GROUND 
    • Key in OFF position.
      • Fig 4: Checking Circuit For Open Or Short To Ground
      GF0013149Courtesy of FORD MOTOR CO.
    • Measure the resistance between front passenger window motor C608-2, circuit 333 (YE/RD), harness side and front passenger window control switch C604-6, circuit 333 (YE/RD), harness side; and between front passenger window motor C608-2, circuit 333 (YE/RD), harness side and ground.
    • Is the resistance less than 5 ohms between the front passenger window motor and front passenger window control switch, and greater than 10,000 ohms between the front passenger window motor and ground? 
    1. YES  : INSTALL a new front passenger window control switch. TEST the system for normal operation.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  6. C6 CHECK CIRCUIT 334 (RD/YE) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Front Passenger Window Control Switch C604
      • Fig 5: Checking Circuit For Open
      GF0013150Courtesy of FORD MOTOR CO.
    • Measure the resistance between front passenger window motor C608-1, circuit 334 (RD/YE), harness side and front passenger window control switch C604-2, circuit 334 (RD/YE), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  C7.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  7. C7 CHECK CIRCUIT 313 (WH/YE) FOR AN OPEN 
    • Disconnect: Driver Window Control Switch C504a
      • Fig 6: Checking Circuit For Open
      GF0013151Courtesy of FORD MOTOR CO.
    • Measure the resistance between driver window control switch C504a-7, circuit 313 (WH/YE), harness side and front passenger window control switch C604-3, circuit 313 (WH/YE), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  C8.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  8. C8 CHECK THE FRONT PASSENGER WINDOW CONTROL SWITCH FOR CORRECT OPERATION 
    • Check the front passenger window control switch. Refer to COMPONENT TESTING .
    • Is the front passenger window control switch OK? 
    1. YES  : Go to  C9.
    2. NO  : INSTALL a new front passenger window control switch. TEST the system for normal operation.
  9. C9 CHECK THE DRIVER WINDOW CONTROL SWITCH FOR CORRECT OPERATION 
    • Check the driver window control switch. Refer to COMPONENT TESTING .
    • Is the driver window control switch OK? 
    1. YES  : INSTALL a new front passenger window regulator and motor. REFER to Window Regulator and Motor - Front Door . TEST the system for normal operation.
    2. NO  : INSTALL a new driver window control switch. TEST the system for normal operation.
  10. C10 CHECK CIRCUIT 170 (RD/LB) FOR VOLTAGE 
    • Disconnect: Front Passenger Window Control Switch C604
      • Fig 7: Checking Circuit For Voltage
      GF0013152Courtesy of FORD MOTOR CO.
    • Measure the voltage between front passenger window control switch C604-4, circuit 170 (RD/LB), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : INSTALL a new front passenger window control switch. TEST the system for normal operation.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
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