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/InstallationCharging System [Skyactiv G 2.0]
Outline
Regulator-less generator (built-in power transistor) has been adopted.
A generator using two delta connection type stator coils has been adopted.
Structural View
Structure
Consists of the following parts:
Battery
(See B ...
Bsm Indicator Light Does Not Flash While Under Bsm Indicator Light Flashing
Conditions (With Combination Switch Operation (Turn Signal Switch)) [Blind Spot
Monitoring (Bsm)]
Description
BSM indicator light does not flash while under BSM indicator light-flashing
conditions (with combination switch operation (turn signal switch))
The BSM indicator light does not flash or illuminate continuously,
but the cond ...
Quick Release (Fuel System) Connector
Purpose, Function
Serviceability has been improved by the easy disconnection/connection.
Construction
The following types of the quick release connectors are used.
U.S.A. and CANADA
Except U.S.A. and CANADA
Type A
An SST is not used with this type.
...