1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Trunk end trim.
b. Rear scuff plate (RH).
c. Trunk side trim (RH).
d. Theft-deterrent horn.
3. 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.
Remote Transmitter Battery Voltage Inspection
Theft Deterrent Horn Removal/InstallationOperating Tips for Audio System
WARNING
Always adjust the audio while the vehicle is stopped:
Do not adjust the audio control switches while driving the vehicle.
Adjusting the audio while driving the vehicle is dangerous as it could distract
your attention from the vehicle operation which could lead to a serious accident.
Ev ...
Pressure Sensor [Two Step Deployment Control System]
Purpose
The pressure sensor determines at an earlier stage whether to detonate the
air bag on the side of the vehicle (around front door) receiving an impact.
This is for improved accuracy of the side air bag operation (deployment).
Function
When the vehicle is involved in ...
Power Steering Malfunction Indicator Light
Purpose
The power steering malfunction indicator light warns the driver that there
is a malfunction with the electric power steering (EPS) system.
Function
If there is a malfunction in the EPS system, the power steering malfunction
indicator light illuminates.
If th ...