|  1. Disconnect the connection socket from a horn of a sound signal. | 
  
 
 | 2. Check a horn, having connected the accumulator to horn plugs by means of pair of cap wires. | 
  
 
 | 3. If the horn does not work, replace it. If it works, means, a cause of defect is the switch, the relay or connecting wires. | 
  
  
  |