*BCM is responsible for monitoring and controlling body electrical systems. It controls output of time or alarm related function with switch signals from switch and switch signals from *SJB via CAN communication.

*SJB sends signals from various switches to *BCM. And receives output control signals from BCM to control relays and *IPS.

Also, SJB performs PWM constant voltage control(to control headlamp/protect headlamp) through IPS.

Dark current auto cut off device to cut dark current and Switch that cuts off all time power when vehicle is parked for long period time is embedded.