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Symptom: *HORN FAILS TO SOUND WITH ALARM TRIPPED (IF ENABLED) POSSIBLE CAUSES CHECK HORN OPERATION JUNCTION BLOCK - OPEN HORN RELAY CONTROL CIRCUIT BODY CONTROL MODULE-OPEN HORN RELAY CONTROL CIRCUIT TEST ACTION APPLICABILITY 1 Push the Horn Button on the Steering Wheel. All Yes → No → Check for and diagnose related Body Control Module Diagnostic 2 Remove the BCM from the junction block. All Yes → Replace the Body Contol Module. No → Replace the Junction Block in accordance with the Service Infor- 531 VEHICLE THEFT/SECURITY |