You need to check the under hood # 9 ( 20 A ) but this would be possible cause only if the interlock, brake lights and cruise control don't work.
Other possoble causes are
1. Defective horn assy.
2. Faulty horn pad/
3. Faulty steering ABS wire reel.
Oct 26, 2008 at 6:50 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.