Kia Optima: Description

BCM, SJB(Smart Junction Box) and CLU(Instrument Cluster) are connected by CAN line.
The nearest module with input switch or actuator receives the input data to reduce the wiring and then send input data to the others which need them via CAN lines.In case of sending output, it is used to CAN communication, not wiring.
SJB can also control relays and IPS.So Each module allots the current data and actuation data.

FunctionInspection
1.
The rear glass defogger switch
inputs can be checked using the GDS.
2.
To check the input value of rear
glass defogger switch, select option "Body Control Mod ...
Panorama sunroof
If your vehicle is equipped with a sunroof, you can slide or tilt your sunroof
with the sunroof control lever located on the overhead console.
The sunroof can only be opened, closed, or tilted wh ...
Components and Components Location
Components
1. Front seat belt
2. Height adjuster
3. Rear seat belt [RH]
4. Rear center seat belt
5. Rear seat belt [LH]
6. Rear seat belt buckle
...