lemon-mirror:
Home >> Scion >> 2004 >> xB Automatic >> Repair and Diagnosis >> Electrical >> Horns >> Horn System >> Inspection

Horn System: Inspection

  1. INSPECT LOW PITCHED HORN ASSY 
    1. Apply battery voltage to the horn and check operation of the horn.

      Standard: 

      LOW PITCHED STANDARD

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

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

      Fig 1: Applying Battery Voltage To Horn
      G03382780Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT HIGH PITCHED HORN ASSY 
    1. Apply battery voltage to the horn and check operation of the horn.

      Standard: 

      HIGH PITCHED STANDARD

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

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

      Fig 2: Inspecting High Pitched Horn Assy
      G03382781Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT HORN RELAY ASSY 
    1. Remove the HORN relay from the engine room R/B.
    2. Check the HORN relay resistance.

      Standard: 

      HORN RELAY ASSY STANDARD

      Tester Connection Specified Condition
      3-5 10 kΩ or higher
      Below 1Ω. (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
      G03382782Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
· About lemon-mirror