Initial Inspection and Diagnostic Overview

1. Verify the customer's concern by operating the horn system to duplicate the condition.
2. Inspect to determine if one of the mechanical or electrical concerns apply:

VISUAL INSPECTION CHART

Mechanical
- Verify that horn retaining screw is tight.
- Verify that horns are not touching surrounding sheet metal or other components.
- Blocked horn opening.

Electrical
- Verify that the ground of the horn is good by inspecting connection for corrosion.
- Check system fuse 17 (20 A).
- Check wiring for obvious short or opens.
- Check connectors for obvious damage.

3. If the concerns remain after the inspection, determine the conditions and go to the Symptom Chart. Symptom Related Diagnostic Procedures