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. |
