Smart Junction Block (SJB)
WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
General function: Interior Junction Block + some functions of BCM
It controls loads with CAN communication and IPS.
IPS stands for Intelligent Power Switch, which uses the semiconductor technology to replace the current role of fuse and relay. (The IPS device protects the current load control function from the overcurrent.)
NOTE:
The advantages of IPS are as follows:
- Reduce relay and consequently decrease weight and volume
- Remove the relay operation noise
- Not necessary to replace fuse, increasing the product life
- Diagnosis capability