Smart Junction Box(SJB)
|
1. |
General function : Interior Junction Box + some functions
of BCM
It controls loads with CAN communication and IPS.
|
|
2. |
Main function
| A. |
Low speed CAN communication(100 kbps)
|
| B. |
Self diagnostics(Lamp open/short)
|
| C. |
Fail safe(When MCU/CAN is fail, Head lamp / Tail lamp
directly drive)
|
| D. |
Protection of bulb over-voltage(PWM function)
|
| E. |
Cut of Over-load and Short : PCL(Program Current Limit)
|
|
Auto Cut System Of Dark Current
|
1. |
Description : It cuts automatically power to be provided with
load for reducing useless 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 mode 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.
|
1.
Be sure there is no play in the fuse holders, and that the
fuses are held securely.
2.
Are the fuse capacities for each ...
See also:
Base curb weight
This is the weight of the vehicle including a full tank of fuel and all standard
equipment. It does not include passengers, cargo, or optional equipment. ...
Rear Shock Absorber Inspection
1.
Check the rubber parts for wear and deterioration.
2.
Compress and extend the piston rod (A) and check that there is
no abnormal resista ...
Exhaust System Inspection
1.
Visually check the pipes, hangers and connections for severe corrosion,
leaks or damage.
2.
Check for unusal exhaust sounds or abnormal ...
Kia Soul: Relay Box (Passenger Compartment) Description
Relay Box (Passenger Compartment) Fuse Inspection