Topaz FWD L4-140 2.3L HSO (VIN S) (1988)
Rear Defogger: Technical Service Bulletins
Rear Defroster Schematic - Manual Revision
SHOP MANUAL-1988-SECTION 36-86- WINDOW-REAR-DEFROSTER SCHEMATIC REVISED
SHOP MANUAL-1989-SECTION 36-86- WINDOW-REAR-DEFROSTER SCHEMATIC REVISED
Article No. 89-12A-6
FORD:
1988-89 TEMPO
LINCOLN-MERCURY: 1988-89 TOPAZ
ISSUE:
The rear window defroster schematic on page 36-86-2 of the 1988 and 1989 Tempo/Topaz/Escort Shop Manual is incorrect.
ACTION:
Refer to the page following this TSB article for the revised rear window defroster schematic. This information should be put in your 1988
and 1989 Tempo/Topaz/Escort Shop Manual, page 36-86-2.
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES:
2800
1988/1989
36-86-1
Window, Rear-Defroster
SECTION 36-86 Window, Rear-Defroster
SUBJECT
PAGE
DESCRIPTION AND OPERATION
Window, Rear-Defroster
36-86-4
MAJOR SERVICE OPERATIONS
Grid Wire Repair
36-86-6
Application
36-86-6
Curing
36-86-7
Mixing
36-86-6
Surface Preparation
36-86-6
Lead Window Terminal Service
36-86-7
SUBJECT
PAGE
REMOVAL AND INSTALLATION
Control Assembly
36-86-7
Window
36-86-9
Special Service Tools
36-86-10
TESTING
Grid Wire Test
36-86-10
Relay Tests
36-86-9
VEHICLE APPLICATION
36-86-1
VEHICLE APPLICATION Tempo/Topaz, Escort.
DESCRIPTION AND OPERATION
The heated rear window defroster system consists of a switch mounted to the climate control and a relay control assembly mounted inside the instrument
panel (Tempo/Topaz), or a switch and relay control assembly mounted on the instrument panel (Escort), and a series of grid wires baked on the inside
surface of the rear window. When the control button is pushed to the ON position, 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 grid 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 control lever 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 a wire containing a fuse link connected to the starter relay.
1988/1989
36-86-2 Window, Rear-Defroster