Symptoms - Horns
Important
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The following steps must be completed before using the symptom tables:
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1.
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Perform the
Diagnostic System Check - Vehicle
before using the symptom tables in order to verify that all of the following are true:
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The control modules can communicate via the serial data link
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2.
Review the system operation in order to familiarize yourself with the system functions. Refer to
Horns System Description and Operation
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Visual/Physical Inspection
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Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
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Perform the following if a horn buzzes or has a harsh tone.
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Inspect for debris in the joint where the horn fastens to the vehicle.
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Test the torque of the horn mounting hardware. The horn mounting's hardware should be tightened to a torque of 10 Nm (7 lb ft).
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Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to
Testing for Intermittent Conditions and Poor Connections
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Refer to a symptom diagnostic procedure
Horns Malfunction
in order to diagnose the symptom.