Continental
1988 Continental
Window, Rear-Defroster 36-86-1
36-86-1
SECTION 36-86 Window, Rear-Defroster
SUBJECT PAGE
DESCRIPTION AND OPERATION 36-86-1
MAJOR SERVICE OPERATATIONS
Grid Wire Repair 36-86-2
Lead Wire Terminal Service 36-86-3
REMOVAL AND INSTALLATION
Relay Control Assembly 36-86-4
Switch 36-86-3
SUBJECT PAGE
REMOVAL AND INSTALLATION (Cont'd.)
Window 36-86-4
TESTING
Grid Wire Test 36-86-5
Relay Tests 36-86-4
Switch Assembly 36-86-5
VEHICLE APPLICATION 36-86-1
VEHICLE APPLICATION Continental.
DESCRIPTION AND OPERATION
The heated rear window defroster system consists of a switch assembly and a relay control assembly mounted to the instrument panel, and a series of grid wires baked on the inside surface of the rear window, When the control switch is activated by the push button, current is directed to the grid wires on the rear window. The heated grid wires keep the rear window clear of fog or ice.
The integral timer automatically turns off the heating after approximately 10 minutes of operation. If more than 10 minutes of use is needed, the grid can be reactivated for another 10 minutes by pushing the push button to the ON position. This operation can be repeated as required. Power for the control timer and relay coil comes from the RUN terminal of the ignition switch and from the high-current fuse panel.
1988 Continental
36-86-2 Window, Rear-Defroster 36-86-2
DESCRIPTION AND OPERATION (Continued)
The rear window defrost grid is fed through the relay contacts from the high current fuse panel. The input to the rear defrost control assembly from the ignition switch determines if the relay contacts will stay closed when activated by the ON-OFF push button. When the ignition switch is in RUN position, moving the button to ON closes the relay contacts and also activates the timing circuit. The relay contacts will remain closed until they are opened by the timing circuit, the button is depressed to the OFF position, or the ignition switch is turned to the OFF position.
The circuit is protected by a fuse located in the highcurrent fuse panel.
The operating button is spring-loaded to return from ON or OFF to its center (normal) position.
As soon as the switch is depressed to the ON position, it electrically connects power to energize the timer relay coil, thereby causing the normally open relay load contacts to close and provide power to the ON lamp and the rear window grid wires. The grid wires will continue to receive power for approximately 10 minutes.
The control can be deactivated before automatic time out by momentarily depressing it to the OFF position, or by turning the ignition switch to the OFF position.
For individual wiring harness applications, refer to Section 34-24.
MAJOR SERVICE OPERATIONS
Grid Wire Repair
NOTE: A single break or any breaks that total more than 25 mm (1 inch) in one grid cannot be repaired. The rear window must be replaced. For breaks less than 25 mm (1 inch) long, use the following procedure:
Surface Preparations
1. The vehicle should be brought inside and permitted to come to room temperature of 16~C (60~F) or above.
2. Clean entire grid line repair area with Ford Glass Cleaner E4AZ-19C507-A (ESR-M 1495- A) or equivalent, to remove all dirt, wax, grease, oil or other foreign matter. It is important that repair area be clean and dry.
Mixing
The bottle of Grid Repair Compound D8AZ-19562-A (ESB-M4J58-A) or equivalent and touch-up paint must be at room temperature. Shake bottle for at least one minute for thorough mixing. Shake frequently during use.
Application
1. Mark location of break on outside of window.
2. Using cellulose tape, mask off area directly above and below grid break. The break area should be at the center of mask, and tape gap must be no wider than existing grid line.
3. If both brown and silver layers of grid are broken or missing, apply a coating of the brown touchup paint across break area first. Two coats may be necessary to obtain proper color. Allow touch-up paint to dry, then apply three coats of silver grid repair compound, allowing three to five minutes drying time between coats. The coating of silver grid repair compound should extend at least 6.35mm (1/4-inch) on both sides of break area.
NOTE: If the brown layer of the grid is not broken or missing, apply only the silver grid repair compound to the break.
4. Allow to dry for five minutes, then remove mask.
5. After removing mask, check outside appearance of grid repair. If silver repair compound is visible above or below grid, this excess should be removed. This can be done by placing a single-edge razor blade on the glass parallel to the grid and scraping gently toward grid.
CAUTION: Be careful not to damage the-grid line with the razor blade.
Curing
The repair coating will air dry in approximately one minute and can be energized within three to five minutes, Optimum hardness and adhesion occurs after approximately 24 hours. At the time, the repair area may be cleaned with a mild window cleaner.