Component Tests and General Diagnostics

INSPECTION




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







2. INSPECT RELAY (Marking: HORN)
a. Remove the HORN relay from the engine room J/B.
b. Measure the resistance of the relay.
If the result is not as specified, replace the relay.







3. INSPECT HIGH PITCHED HORN ASSEMBLY
a. Apply battery voltage to the horn and check operation of the horn.
If the result is not as specified, replace the horn assembly.







4. INSPECT LOW PITCHED HORN ASSEMBLY
a. Apply battery voltage to the horn and check operation of the horn.
If the result is not as specified, replace the horn assembly.

If all the check results are as specified above and the wire harness is normal but the horn does not sound, replace the horn button switch (steering wheel pad).