| VELOSTER(FS) >2012 > G 1.6 GDI > Body Electrical System > Fuses And Relays > Relay Box (Passenger Compartment)>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
Before delivering to customer | Fuse switch OFF
•All door close & RKE door lock or Constant switch state (Auto cut of dark current scenario starts.) -After "sleep" state is for 20 min. -SJB power down(SJB dark current : 200 μA) and cutting power of Lamp/Body Load/Wake up |
After delivering to customer | Fuse switch ON
•All door close & Constant switch state : C_BAState=OFF (Auto cut of dark current scenario starts.) -After "sleep" state is for 20 min. -SJB power down(SJB dark current : 200 μA) and cutting power of Lamp Load •In case RKE door lock : C_BAState=ON & Trunk SW=CLOSE (Auto cut of dark current scenario starts.) -After "Sleep" state 35s~65s (Waiting time of other unit : 30~60s + SJB sleep counts 5s) -SJB Powerdown(SJB dark current : 200 μA) and cutting power of Lamp Load |
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.
Symptom | Related part
•Door lock/unlock, trunk open don't activate by RKE. (Wakeup of each module don't activate.) | BCM
•Digital clock is reset.(Memory is reset.) | Digital clock
•Setting value of audio(Volume, Frequency setting) is reset. (Memory is reset.) | Audio
*If fuse switch OFF(before delivering to customer) is set, power of BCM, Digital clock and audio is shut off.