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Pinpoint Test D: A Single Power Window is Inoperative - Rear

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, left rear and right rear power windows 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 windows do not operate from their respective window control switches.

Left Rear 

When operating the left rear window in the down position, ground is received from the driver window control switch through circuit 317 (GY/OG). Voltage is supplied to the left rear window motor through circuit 333 (YE/RD) and ground through circuit 334 (RD/YE).

When operating the left rear window in the up direction, ground is received from the driver window control switch through circuit 316 (YE/LB). Voltage is supplied to the left rear window motor through circuit 334 (RD/YE) and ground through circuit 333 (YE/RD).

When the left rear power window is operated in the down direction from the driver window control switch, voltage is sent to left rear window control switch through circuit 316 (YE/LB), which transfers voltage to the left rear window motor through circuit 333 (YE/RD). Ground is provided to the left rear window control switch through circuit 317 (GY/OG), which transfers ground to the left rear window motor through circuit 334 (RD/YE). When the left rear window is operated in the up direction from the driver window control switch, voltage is sent to the left rear window control switch through circuit 317 (GY/OG), which transfers voltage to the left rear window motor through circuit 334 (RD/YE). Ground is provided to the left rear window control switch through circuit 316 (YE/LB), which transfers ground to the left rear window motor through circuit 333 (YE/RD).

Right Rear 

When operating the right rear window in the down direction, ground is received from the driver window control switch through circuit 319 (YE/BK). Voltage is supplied to the right rear window motor through circuit 333 (YE/RD) and ground through circuit 334 (RD/YE).

When operating the right rear window in the up direction, ground is received from the driver window control switch through circuit 320 (RD/BK). Voltage is supplied to the right rear window motor through circuit 334 (RD/YE) and ground through circuit 333 (YE/RD).

When the right rear power window is operated in the down direction from the driver window control switch, voltage is sent to right rear window control switch through circuit 320 (RD/BK), which transfers voltage to the right rear window motor through circuit 333 (YE/RD). Ground is provided to the right rear window control switch through circuit 319 (YE/BK), which transfers ground to the right rear window motor through circuit 334 (RD/YE). When the right rear window is operated in the up direction from the driver window control switch, voltage is sent to the right rear window control switch through circuit 319 (YE/BK), which transfers voltage to the right rear window motor through circuit 334 (RD/YE). Ground is provided to the right rear window control switch through circuit 320 (RD/BK), which transfers ground to the right rear window motor through circuit 333 (YE/RD).

This pinpoint test is intended to diagnose the following:

PINPOINT TEST D: A SINGLE POWER WINDOW IS INOPERATIVE - REAR 

  1. D1 CHECK THE OPERATION OF THE REAR PASSENGER WINDOWS FROM THE DRIVER WINDOW CONTROL SWITCH 
    • Key in ON position.
    • Operate the rear passenger windows from the driver window control switch.
    • Do the rear passenger windows operate from the driver window control switch? 
    1. YES  : VERIFY the window lock button is off. If the button is off, go to  D6.
    2. NO  : Go to  D2.
  2. D2 CHECK THE DOWN INPUT TO THE REAR PASSENGER WINDOW MOTOR 
    • Key in OFF position.
    • Disconnect: C703 (LH), C803 (RH) Rear Window Motor
    • Key in ON position.
      • Fig 1: Checking Circuit For Voltage
      GF0013146Courtesy of FORD MOTOR CO.
    • While pressing the driver window control switch to the inoperative rear window DOWN position, measure the voltage between LH rear passenger window motor C703-2 or RH rear passenger window motor C803-2, circuit 333 (YE/RD), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  D7.
    2. NO  : Go to  D3.
  3. D3 CHECK THE DOWN INPUT TO THE REAR WINDOW CONTROL SWITCH 
    • Key in OFF position.
    • Disconnect: C701 (LH), C801 (RH) Rear Window Control Switch
    • Key in ON position.
      • Fig 2: Checking Circuit For Voltage
      GF0013147Courtesy of FORD MOTOR CO.
    • While pressing the driver window control switch to the inoperative rear window DOWN position, measure the voltage between LH rear passenger window control switch C701-5 or RH rear passenger window control switch C801-5, circuit 316 (YE/LB), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : Go to  D5.
    2. NO  : Go to  D4.
  4. D4 CHECK CIRCUITS 316 (YE/LB) AND 320 (RD/BK) FOR AN OPEN OR SHORT TO GROUND 
    • Key in OFF position.
    • Disconnect: Driver Window Control Switch C504a
      • Fig 3: Checking Circuit For Open Or Short To Ground
      GF0013153Courtesy of FORD MOTOR CO.
    • Measure the resistance between the inoperative rear window control switch, harness side and the driver window control switch, harness side; and between the inoperative rear window control switch, harness side and ground as follows:
      Passenger Door Control Switch Connector - Pin Circuit Driver Door Window Control Switch Connector - Pin Circuit
      (LH) C701-5 316 (YE/LB) C504a-1 316 (YE/LB)
      (RH) C801-5 316 (YE/LB) C504a-4 320 (RD/BK)
    • Is the resistance less than 5 ohms between the switches, and greater than 10,000 ohms between the switch and ground? 
    1. YES  : INSTALL a new driver window control switch. TEST the system for normal operation.
    2. NO  : REPAIR the circuit in question. TEST the system for normal operation.
  5. D5 CHECK CIRCUIT 333 (YE/RD) FOR AN OPEN 
      Fig 4: Checking Circuit For Open
      GF0018600Courtesy of FORD MOTOR CO.
    • Measure the resistance between inoperative rear window control switch (LH) C701-6, (RH) C801-6, circuit 333 (YE/RD), harness side and inoperative rear window motor (LH) C703-2, (RH) C803-2, circuit 333 (YE/RD), harness side.
    • Is the resistance less than 5 ohms? 
    1. YES  : INSTALL a new rear window control switch. TEST the system for normal operation.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  6. D6 CHECK CIRCUIT 170 (RD/LB) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: Inoperative Rear Window Control Switch (LH) C701, (RH) C801
    • Key in ON position.
      • Fig 5: Checking Circuit For Voltage
      GF0013152Courtesy of FORD MOTOR CO.
    • Measure the voltage between inoperative rear window control switch (LH) C701-4, (RH) C801-4, circuit 170 (RD/LB), harness side and ground.
    • Is the voltage greater than 10 volts? 
    1. YES  : INSTALL a new rear window control switch. TEST the system for normal operation.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  7. D7 CHECK CIRCUIT 334 (RD/YE) FOR AN OPEN OR SHORT TO GROUND 
    • Key in OFF position.
    • Disconnect: Inoperative Rear Window Control Switch (LH) C701, (RH) C801
      • Fig 6: Checking Circuit For An Open Or Short To Ground
      GF0018601Courtesy of FORD MOTOR CO.
    • Measure the resistance between inoperative rear window control switch (LH) C701-2, (RH) C801-2, circuit 334 (RD/YE), harness side and inoperative rear window motor (LH) C703-1, (RH) C803-1, circuit 334 (RD/YE), harness side; and between inoperative rear window control switch (LH) C701-2, (RH) C801-2, circuit 334 (RD/YE), harness side and ground.
    • Is the resistance less than 5 ohms between the inoperative switch and motor; and greater than 10,000 ohms between the inoperative switch and ground? 
    1. YES  : Go to  D8.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  8. D8 CHECK CIRCUITS 317 (GY/OG) AND 319 (YE/BK) FOR AN OPEN OR SHORT TO GROUND 
    • Disconnect: Driver Window Control Switch C504a
      • Fig 7: Checking Circuit For Open Or Short To Ground
      GF0013156Courtesy of FORD MOTOR CO.
    • Measure the resistance between the inoperative rear window control switch, harness side and the driver window control switch, harness side; and between the inoperative rear window control switch, harness side and ground as follows:
      Passenger Door Control Switch Connector - Pin Circuit Driver Door Window Control Switch Connector - Pin Circuit
      (LH) C701-3 317 (GY/OG) C504a-2 317 (GY/OG)
      (RH) C801-3 317 (GY/OG) C504a-3 319 (YE/BK)
    • Is the resistance less than 5 ohms between the inoperative rear window control switch and driver window control switch; and greater than 10,000 ohms between the inoperative rear window control switch and ground? 
    1. YES  : Go to  D9.
    2. NO  : REPAIR the circuit(s) as necessary. TEST the system for normal operation.
  9. D9 CHECK THE REAR WINDOW CONTROL SWITCH AND DRIVER WINDOW CONTROL SWITCH FOR CORRECT OPERATION 
    • Check the inoperative rear window control switch and the driver window control switch. Refer to COMPONENT TESTING .
    • Do the inoperative rear window control switch and driver window control switch pass the component test? 
    1. YES  : INSTALL a new rear window motor. REFER to Window Regulator and Motor - Rear Door . TEST the system for normal operation.
    2. NO  : INSTALL a new window control switch as necessary. TEST the system for normal operation.
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