Relay Box: Description and Operation

Description

Auto cut system of dark current




1. Description : It cuts automatically power to be provided with load for reducing unnecessary dark current according to vehicle state.




2. SJB had 3 modes, "Normal Mode", "Sleep Mode", "Power Off Mode". Auto cut of dark current practice in "Sleep Mode".
A. "Sleep" condition : IG OFF, constant input switch, CAN network doesn't activate.
B. "Sleep" resolutive condition : Any switch inputs, CAN network activates, KEY ON, IGN ON
C. "Power OFF" condition : The setting time of timer which is used by cutting a load power expires.
D. "Normal Mode" : SJB function normally activates.
E. "Sleep Mode" : It is low power mode and activates for reducing electricity consumption of SJB or IPM. Auto cut of dark current function activates.
F. "Power OFF Mode" : Power of MCU and circumferential circuit is cut for minimizing electricity consumption. Operation stops.
3. The explanation - The auto cut of dark current









4. Problem when fuse switch setting is wrong
: If a fuse switch is set to OFF(Before delivering to customer) by a customer or technician and auto cut function of dark current activates, below problems may happen.





*If fuse switch OFF(before delivering to customer) is set, power of BCM, Digital clock and audio is shut off.