Section 01-11: Glass, Frames and Mechanisms
1996 F-150, F-250, F-350, F-Super Duty and Bronco Workshop Manual
DIAGNOSIS AND TESTING

Component Tests

 

Switch Tests, Window

 

Master Window Control Switch

To TestConnect Self Powered Test Light or Ohmmeter to TerminalsMove Switch to These PositionsA Good Switch Will Indicate
Power and Ground Checks Before Any Other Tests15,400 (LB/BK)
and
14, 57 (BK)
All Four Window Switches (All Positions)Open Circuit
 14, 57 (BK)
and
8, 6, 7, 9, 10, 12, 11, 13
All Four Window Switches (at Rest)Closed Circuit
Left Front Window Circuit15,400 (LB/BK)
and
8,226 (W/BK)
UpClosed Circuit
 15,400 (LB/BK)
and
6,227 (Y)
DownClosed Circuit
Right Front Window Circuit15,400 (LB/BK)
and
7,313 (W/Y)
UpClosed Circuit
 15,400 (LB/BK)
and
9,314 (T/LB)
DownClosed Circuit
Left Rear Window Circuit15,400 (LB/BK)
and
10,317 (GY/O)
UpClosed Circuit
 15,400 (LB/BK)
and
12,316 (Y/LB)
DownClosed Circuit
Right Rear Window Circuit15,400 (LB/BK)
and
11,320 (R/BK)
UpClosed Circuit
 15,400 (LB/BK)
and
13,319 (Y/BK)
DownClosed Circuit
Window Lock Switch15,400 (LB/BK)
and
16,170 (R/LB)
Window Lock Switch Towards DoorOpen Circuit
  Window Lock Switch Away from DoorOpen Circuit



Master Window Control Switch, F-Series Crew Cab






Pin NumberCircuitCircuit Function
6314 (T/LB)LF Window Regulator Switch to RF Window Regulator Motor
7226 (W/BK)LF Window Regulator Switch to LF Window Regulator Motor
8313 (W/Y)LF Window Regulator Switch to RF Window Regulator Motor
9227 (Y)LF Window Regulator Switch to LF Window Regulator Motor
10320 (R/BK)LF Window Regulator Switch to RR Window Control Switch
11317 (GY/O)LF Window Regulator Switch to LR Window Control Switch
12319 (Y/BK)LF Window Regulator Switch to RR Window Control Switch
13316 (Y/LB)LF Window Regulator Switch to LR Window Control Switch
14400 (LB/BK)Power Window Switch Feed
1557 (BK)Ground Circuit
16170 (R/LB)Window Regulator Switch Feed

 

Single Switch

NOTE: Remove window regulator control switch (14529) from the vehicle as described in Removal and Installation, Window Regulator Control Switch in this section. The raised portion of the switch knob should face right exposing the five terminals.

  1. Use a self-powered test lamp or an ohmmeter to test the power window regulator control switch.

  1. With the window regulator control switch in the neutral position, there should be continuity between terminals 1 and 2, and terminals 3 and 4. Terminal 5 should be disconnected from all other terminals.

  1. When the raised portion of the switch rocker knob is pushed, closing windows, there should be continuity between terminals 1 and 5, and terminals 3 and 4. Terminal 2 should be disconnected from all other terminals.

  1. When the depressed portion of the switch rocker knob is pushed, opening the windows, there should be continuity between terminals 1 and 2, and terminals 4 and 5. Terminal 3 should be disconnected from all other terminals.

  1. If the window regulator control switch does not test as stated, replace window regulator control switch.



    Window Regulator Control Switch






    Pin NumberCircuitCircuit Function
    1314 (T/LB)Left Front Window Regulator Switch to Right Front Window Regulator Switch
    2334 (R/Y)Window Regulator Switch to Window Regulator Motor
    3170 (R/LB)Window Regulator Switch Feed
    4333 (Y/R)Window Regulator Switch to Window Regulator Motor
    5313 (W/Y)Left Front Window Regulator Switch to Right Front Window Regulator Motor Switch

 

Heated Back Window Switch and Light, Control Assembly Test

  1. Ground Pin 4 and connect a jumper wire between Pins 3 and 2.

  1. Apply power to Pin 2. The indicator should not light.

  1. Momentarily actuate control to the ON position. The indicator should come on and stay on after the control returns to the normal position.

  1. The indicator should go off under the following conditions:

    1. If control is depressed to OFF.
    1. If power to ignition switch accessory terminal is removed or approximately 10 minutes have elapsed.
  1. Apply 12 volts power to Pin 5. The ISO bulb should light.



    Heated Back Window Switch Connector, Bronco






    Pin NumberCircuitCircuit Function
    1186 (BR/LB)Heated Back Window Switch to Heated Back Window Grid
    2185 (BK)Battery Feed to Heated Back Window Switch and Grid
    38 (O/Y)Heated Back Window Timing Circuit Feed
    457 (BK)Ground Circuit
    519 (LB/R)Instrument Panel Lamps Feed

 

Tailgate Switch, Instrument Panel-Mounted Bronco Only

  1. NOTE: Remove window regulator control switch from the vehicle, as described in Removal and Installation, Window Regulator Control Switch in this section.

    Use a self-powered test lamp, or an ohmmeter to test the window regulator control switch.

  1. With the window regulator control switch in the neutral position, there should be continuity between terminals 1 and 2, and terminals 3 and 4. Terminal 5 should be disconnected from all other terminals.

  1. When the switch rocker knob is pushed up to close the tailgate window, there should be continuity between terminals 1 and 2, and terminals 4 and 5. Terminal 3 should be disconnected from all other terminals.

  1. When the switch rocker knob is pushed down to open the back window glass (42006), there should be continuity between terminals 2 and 5, and terminals 3 and 4. Terminal 1 should be disconnected from all other terminals.

  1. If the window regulator control switch does not test as stated, replace the switch.







    Pin NumberCircuitCircuit Function
    157 (BK)Ground Circuit
    2405 (P/LB)Window Regulator Switch to Back Window Switch
    357 (BK)Ground Circuit
    4404 (P/LG)Window Regulator Switch to Back Window Switch
    5400 (LB/BK)Power Window Switch Feed

 

Tailgate Window Regulator Control Switch, Tailgate-Mounted

Testing of the tailgate-mounted window switch can be performed with the switch installed in the vehicle. Use a self-powered test lamp or an ohmmeter.

  1. With the switch in the neutral position, there should be continuity between terminals 1, 2 and 3.

  1. With the back window glass up, there should be continuity between terminals 1 and 5, and 2 and 4.

  1. With back window glass down, there should be continuity between terminals 2 and 5, and 3 and 4.

  1. If the switch does not test as stated, replace switch.







    Pin NumberCircuitCircuit Function
    157 (BK)Ground Circuit
    2405 (P/LB)Window Regulator Switch to Back Window Switch
    357 (BK)Ground Circuit
    4404 (P/LG)Window Regulator Switch to Back Window Switch
    5400 (LB/BK)Power Window Switch Feed
    6407 (T/BK)Window Regulator Switch Rear to Limit Switch
    7333 (Y/R)Window Regulator Switch to Window Regulator Motor

 

Window Regulator Electric Drive

 

To test window regulator electric drive current draw, remove the front door trim panel (23942) or tailgate trim panel. Refer to Section 01-05.

  1. Disconnect the window regulator electric drive lead.

  1. Disconnect the window regulator control switch from the window regulator electric drive.

  1. Supply power to window regulator electric drive lead connector with an ammeter in series.

  1. NOTE: The current draw for the no-load test should not exceed four amps and should not fluctuate. Reversal of the window regulator electric drive wire connections will reverse the direction of window regulator electric drive rotation.

    Operate the window regulator electric drive and observe the current draw.

  1. Replace the window regulator electric drive if the current draw exceeds four amps.

  1. If the window regulator control switch does not test as stated, replace the switch.





 

Heated Back Window Grid Wire Test

  1. Using a strong light inside vehicle, visually inspect wire grid from outside. A broken grid wire will appear as a brown spot.

  1. Run engine at idle. Set the heated back window switch and light (18C621) to ON. The indicator lamp should come on.

  1. Working inside vehicle with Rotunda Digital Volt-Ohmmeter 014-00407 or equivalent, contact broad (bus bars) red-brown strips on sides of rear window. The meter should read 10-13 volts. A lower voltage reading indicates a loose ground wire (pigtail) connection at grounded side of glass.

  1. Contact a good ground point with negative lead of meter. The voltage reading should not change.

  1. With negative lead of the meter grounded, touch each grid line of heated back window at its midpoint with positive lead. A reading of approximately 6 volts indicates that the line is good. A reading of zero volts indicates that the line is broken between midpoint and the positive side of the grid line. A reading of 12 volts indicates that the circuit is broken between midpoint of grid line and ground.