For 1990-2009 cars only
Important: The following steps must be completed before using the symptom tables:
Review the system operation in order to familiarize yourself with the system functions. Refer to Horns System Description and Operation .
Visual/Physical Inspection
| • | Inspect for aftermarket devices which could affect the operation of the horn system. Refer to Checking Aftermarket Accessories . |
| • | Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom. |
| • | Perform the following if a horn buzzes or has a harsh tone: |
| - | Inspect for debris in the joint where the horn fastens to the vehicle. |
| - | Test the torque of the horn mounting hardware. The horn mounting hardware should be tightened to a torque of 10 N·m (7 lb ft). |
Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
