Repair and Diagnosis: Electrical: Horns: 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.
  
  Fig 1: Checking Horn Operation
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT HORN RELAY ASSY (Marking: HORN)
1. Remove the horn relay from the engine room R/B and J/B.
2. Inspect the horn relay continuity.
  
  Fig 2: Identifying Horn Relay Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard:
  
  Fig 3: Horn Relay Terminal Specifications
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the relay.