Principles of Operation

PRINCIPLES OF OPERATION

The smart junction box (SJB) supplies the switched and control voltage to the horn relay (part of the SJB). When the horn switch (part of the steering wheel) is pressed, ground is supplied to the SJB through the clockspring. The SJB then energizes the horn relay sending voltage to the horn, enabling the horn to sound.

The SJB provides a momentary ground to the horn relay when the anti-theft system is armed, and an on then off ground when an intrusion is detected or the panic button is pressed on the remote keyless entry (RKE) key fob.