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Repair and Diagnosis: Electrical: Horns: Inspection

  1. INSPECT HORN RELAY ASSY 
      Fig 1: Displaying Horn Relay Assembly Circuitry
      G02859627Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Inspect the horn relay (Marking: HORN) continuity.
      HORN RELAY ASSEMBLY CONTINUITY

      Tester Connection Condition Specified Condition
      1 <=> 2 Constant Continuity
      3 <=> 5 Apply B+ Between Terminals 1 And 2 Continuity

      If the continuity is not as specified, replace the relay.