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/InstallationSunvisors
When you need a sunvisor, lower it for use in front or swing it to the side.
Side Extension Sunvisors
The visor extender extends the sunvisor's range of sun shading.
To use, pull it out.
CAUTION
When moving the sunvisor, retract the visor extender to its original position.
Otherwise, ...
A/C Unit
Outline
The A/C unit which integrates the cooling and heater units has been adopted.
Construction
The A/C unit consists of the following parts.
Operation
Air Mix Door Operation
The air mix door, installed in the A/C unit, controls HOT or COLD position,
depend ...
Car Navigation Unit Removal/Installation
CAUTION:
The audio unit communicates with the car-navigation unit and records the
presence/non-presence of the car-navigation unit when the ignition is switched
to ACC or ON (engine off or on) after connecting the negative battery cable.
If the commander switch is installed ...