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Horn System: Inspection

  1. INSPECT LOW PITCHED HORN ASSY 
    1. Check operation of the horn.
    HORN SPECIFICATION

    Measurement Condition Specified Condition
    Battery positive (+) --> Terminal 1
    Battery negative (-) --> Horn body    		 Horn sounds

    If the result is not as specified, replace the horn assy.

    Fig 1: Inspecting Low Pitched Horn Assy
    G03479152Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT HIGH PITCHED HORN ASSY 
    1. Check operation of the horn.
    HORN SPECIFICATION

    Measurement Condition Specified Condition
    Battery positive (+) --> Terminal 1
    Battery negative (-) --> Horn body    		 Horn sounds

    If the result is not as specified, replace the horn assy.

    Fig 2: Inspecting High Pitched Horn Assy
    G03479153Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT HORN RELAY ASSY 
    1. Remove the horn relay from the engine room R/B No. 2.
    2. Inspect the horn relay resistance.

    Standard: 

    TESTER SPECIFICATION

    Tester Connection Specified Condition
    3 - 5 10 kΩ or higher
    Below 1 Ω (When battery voltage is applied to terminals 1 and 2)

    If the result is not as specified, replace the relay assy.

    Fig 3: Inspecting Horn Relay Assy
    G03479154Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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