How do you fix a broken rear defrost on a 1993 Toyota Camry?

To fix a broken rear defrost on a 1993 Toyota Camry, first, check the fuse related to the defrost system and replace it if necessary. Inspect the defroster grid on the rear window for any visible breaks or damage; if found, you can use a defroster repair kit to fix the grid. Additionally, ensure the switch and wiring are functioning properly by testing them with a multimeter. If these steps do not resolve the issue, consider consulting a professional mechanic for further diagnosis.