Principles of Operation

PRINCIPLES OF OPERATION

Smart Junction Box (SJB)
The SJB constantly monitors its subsystems for concerns. If a concern is found in one of the subsystems, the SJB records the concern in the form of a diagnostic trouble code (DTC).

The ignition switch position is very important to the SJB functionality. Erratic or unexpected SJB functions can often be traced to problems with these ignition SJB inputs.

The SJB controls a variety of systems:
- battery saver relay
- heated rear window
- interior lighting
- exterior lighting
- remote keyless entry (RKE)
- delayed accessory
- power door locks (including SMART, autolocking and luggage compartment lid release)
- perimeter anti-theft
- horn