1. Disconnect the negative battery cable..
2. Remove the front bumper..
3. Remove the horn..
4. Apply battery positive voltage and connect the ground as shown in the figure and verify the horn beeper sound operation.

If the beep sound cannot be verified, replace the horn.
Horn
Horn Removal/InstallationSettings
NOTE
Depending on the grade and specification, the screen display may differ.
Select the icon on the home
screen and display the Settings screen.
Switch the tab and select the setting item you want to change.
You can customize settings in the setup display as follows:
Tab
...
Fuel Filler Lid Opener Bezel Removal/Installation
1. Remove the screw.
2. Pull the fuel-filler lid opener bezel in the direction of the arrow (1) then
remove the tab.
3. Move the fuel-filler lid opener bezel in the direction of the arrow (2) shown
in the figure.
4. Remove the fuel-filler lid opener bezel.
5. Install in the rever ...
Trunk Lid Opener Switch Inspection
1. Disconnect the negative battery cable..
2. Remove the trunk lid trim..
3. Remove the high-mount brake light..
4. Remove the trunk lid opener switch..
5. Verify the continuity of trunk lid opener switch terminals A and B.
6. Verify that the continuity is as indicated in the table.
...