Windows and Glass: Description and Operation

Glass, Frames and Mechanisms

The glass, frames and mechanisms consist of the:

- front door window glass.
- front door window motor.
- front door window regulator.
- rear quarter window glass.
- rear quarter window glass frame.
- rear quarter motor and window regulator.
- rear door window glass.
- rear door window motor.
- rear door window regulator.
- liftgate glass.
- windshield glass.

The glass, frames and mechanisms include:

- standard plastic and laminate safety glass.
- liftgate glass which houses the rear defrost grid and rear wiper arm.
- windshield glass which is bonded to the opening flange with a urethane sealant.
- on Expedition, standard power windows which include one-touch up/down (LF only) and lock out feature.
- on Navigator, standard power windows which include one-touch up/down (LF and RF only) and lock out feature.
- power vented rear quarter windows.
- fixed rear quarter windows (Expedition only).
- RH quarter window glass antenna.

The window regulator control switch:

- is located on each door trim panel.
- may be used to raise or lower all windows from the master control on the driver side, or the individual side window from the individual door switch.
- on Expedition, includes a one-touch up and one-touch down double detent feature (LF only).
- on Navigator, includes a one-touch up and one-touch down double detent feature (LF and RF).
- can manually lower the driver side window when the master control is depressed halfway (first detent).
- will completely lower the driver side window when the master control is fully depressed and then released (second detent).
- will completely raise the driver side window when the master control is pulled up and then released (second detent).
- on Navigator, will completely lower the passenger front window when the RF control switch is fully depressed and then released (second detent).
- on Navigator, will completely raise the passenger front window when the RF control switch is pulled up and then released (second detent).
- can lock out passenger front (Expedition only) and rear control switches.

The rear quarter glass regulator control switches:

- are located in the overhead console.
- may be used to open and close the RH or LH rear quarter windows.
- stop the rear quarter glass in any position when released.

The power window system will operate if the ignition switch is in the RUN or ACC position, or the delayed accessory feature is active.

Passenger windows may be raised or lowered using the LF master control switches or the appropriate passenger window switch. Passenger window switches receive power when the delayed accessory relay is active and the LF remote lock-out switch is in the UNLOCK position. When in the LOCK-OUT position, the passenger windows are deactivated (Expedition only). When in the lock-out position, the rear windows are deactivated (Navigator only).

NOTE: The Smart Junction Box (SJB) may also be identified as the Generic Electronic Module (GEM).

The accessory delay relay, located in the SJB, provides power for the operation of the power windows and the roof opening panel (if equipped). For Expedition (LF window only) and Navigator (LF and RF windows), the accessory delay relay provides a low current signal to allow window movement. The accessory delay relay is active when the ignition switch is in the RUN or the ACC position, or when the ignition switch is changed from RUN or ACC to the OFF/LOCK position and the LF and RF doors are closed.

The accessory delay relay will deactivate when:

- the LF door is ajar and the ignition switch is in the OFF/LOCK or KEY-OUT position.
- the RF door is ajar and the ignition switch is in the OFF/LOCK or KEY-OUT position.
- 10 minutes have elapsed since the ignition switch was changed from ACC or RUN to the OFF/LOCK position.

Feature inputs:

- LF door open warning switch (open circuit with door closed, grounded with door ajar)
- RF door open warning switch (open circuit with door closed, grounded with door ajar)
- Ignition switch RUN position (battery potential on both the RUN and RUN/ACC inputs)
- Ignition switch ACC position (battery potential on the RUN/ACC input)
- Ignition switch OFF/LOCK position (absence of battery potential on the RUN, RUN/ACC and START inputs)

Feature outputs:

- Accessory delay relay (grounded when activated, open circuit when deactivated)

The HVAC module controls the state of the rear window defrost relay. When the rear window defrost switch (integral to the HVAC module) is pressed, the HVAC module will activate the rear window defrost relay. When the rear window defrost relay is active, both the rear window defrost grid and heated mirror elements will be energized.

The HVAC module will deactivate the rear window defrost relay when one of the following conditions is met:

- The rear window defrost switch is pressed when the feature is active
- Ignition switch state is changed from RUN to OFF/LOCK
- The 10 minute timing function is completed

Feature inputs:

- Ignition switch RUN position (12V on both RUN and RUN/ACC inputs)
- Rear window defrost switch (momentary contact to ground when switch is pressed)

Feature outputs:

- Rear window defrost relay control (grounded when activated, open circuit when deactivated)