1. Disconnect the negative battery cable..
2. Remove the front bumper..
3. Remove the horn..
4. Apply battery positive voltage to horn terminal A, and connect the horn retaining bolt to ground as shown in the figure, and then verify that the horn sounds.

If the horn does not sound, replace the horn.
Horn
Horn Removal/InstallationAbbreviations
AAS
Active Adaptive Shift
ABS
Antilock Brake System
ABDC
After Bottom Dead Center
ACC
Accessories
AFS
Adaptive Front Lighting System
ALC
...
Clock Spring Inspection [Standard Deployment Control System]
1. Disconnect the negative battery cable and wait for 1 min or more..
2. Remove the driver?side air bag module..
3. Remove the steering wheel..
4. Remove the column cover..
5. Remove the clock spring..
6. Verify that the continuity is as indicated in the table.
If not as indicated ...
Reduction Gear
Purpose/ Function
The reduction gear transmits the rotation input from the EPS motor, decreasing
the rotation speed and increasing the torque simultaneously.
Construction
The reduction gear consists of the worm wheel located on the steering column
main shaft and the worm sh ...