Horn System: Inspection

INSPECT FUSE (HORN)
1. Check the resistance of the HORN fuse.
  1. Standard: Below 1 Ω
If the result is not as specified, replace the fuse.

Fig 1: Inspecting Fuse (Horn)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT HIGH PITCHED HORN ASSY

Check operation of the horn.

OK:

HIGH PITCHED HORN ASSY TABLE

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

Fig 2: Inspecting High Pitched Horn Assy

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

INSPECT LOW PITCHED HORN ASSY

Check operation of the horn.

OK:

LOW PITCHED HORN ASSY TABLE

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

Fig 3: Inspecting Low Pitched Horn Assy

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

If all the check results are as specified above and the wire harness is normal, replace the horn button switch (steering wheel pad) (see REPLACEMENT ).