For 1990-2009 cars

#### Horns Inoperative

Problem | Action
--- | ---
The air pressure to the air horn valve is improper. | Check the operation of the pressure protection valve. Refer to Pressure Protection Valve Operational Check .
There is no air pressure to the air horn valve . | Check all air lines for kinks or other types of restrictions.
The air horn valve is faulty. | The air horn is serviced only as a complete assembly. Replace the air horn. Refer to Air Horn Replacement .
Foreign objects are caught in horn. | Remove the objects.