Rear Defogger Inoperative: Legacy

Check fuse. If fuse is okay, check rear defogger switch. See REAR DEFOGGER SWITCH TEST  under TESTING. If switch is okay, check rear defogger relay. If relay is okay, check grid filament. See GRID FILAMENT TEST  under TESTING. If grid filament is okay, check grid filament ground. If grid filament ground is okay, repair wiring harness.