Flow of Diagnosis

1. Verify the customer concern by operating the horn.
2. Visually inspect for obvious signs of mechanical and electrical damage:

Mechanical
^ Damaged horns.

Electrical
^ Fuse.
^ Damaged wiring harness.
^ Loose or corroded connections.

3. If fault is not visually evident, determine the symptom and proceed to the Symptom Chart. Symptom Related Diagnostic Procedures