Component Tests and General Diagnostics

INSPECTION




1. INSPECT FUSE (HORN)
a. Measure the HORN fuse resistance.

Resistance: Below 1 Ohm

If the result is not as specified, replace the fuse.




2. INSPECT RELAY (HORN)
a. Remove the HORN relay from the engine room R/B.




b. Measure the HORN relay resistance.
If the result is not as specified, replace the relay.




3. INSPECT HIGH PITCHED HORN ASSY




a. Check operation of the horn.
If the result is not as specified, replace the horn assy.




4. INSPECT LOW PITCHED HORN ASSY




a. Check operation of the horn.
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).