Fleetwood Brougham V8-350 5.7L (1991)
Heated Glass Element: Testing and Inspection
Figure A - View Of Rear Window From Inside The Car
With the engine running, activate the Rear Defogger. Connect the test lamp lead to ground. Move the test lamp softly along the suspect grid lines on
the inside of the rear window from the passenger's side to the driver's side. The test lamp should get brighter as it moves from the driver's side to the
passenger's side. See Figure A.
^ If the test lamp suddenly lights, there is a break in the grid line just before the point where the test lamp suddenly lights. See Figure A.
^ If the test lamp does not light on a group of grid lines, check for an open in the positive bus bar along the driver's side of the rear window.
^ If the test lamp does not light on any of the grid lines, check the positive bus bar (driver's side) and pigtail to connector C353 for an open. Check
circuit 192 for an open. Also check terminal contact at connector C353.
^ If the test lamp lights brightly along all of the grid lines, check the negative bus bar (passenger's side) and the pigtail to ground G403 for an open.
Also check ground G403.
