Horn System: Inspection

INSPECT LOW PITCHED HORN ASSY
1. Connect the positive (+) lead from the battery to the terminal and the negative (-) lead to the horn body, and check that the horn blows.
  If the result is not as specified, replace the horn assy.
  
  Fig 1: Inspecting Low Pitched Horn Assy
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT HIGH PITCHED HORN ASSY
1. Connect the positive (+) lead from the battery to the terminal and the negative (-) lead to the horn body, and check that the horn blows.
  If the result is not as specified, replace the horn assy.
  
  Fig 2: Inspecting High Pitched Horn Assy
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT HORN RELAY ASSY
1. Remove the horn relay from the instrument panel junction block assy.
2. Inspect the horn relay continuity.
  Standard:
  
  If the result is not as specified, replace the relay assy.
  
  Fig 3: Inspecting Horn Relay Assy Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 4: Inspecting Horn Relay Continuity
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002