Hyundai Sonata: Relay Box (Engine Compartment). Description and Operation
Description
Network Configuration
The Network of the SJB(Smart Junction Box) consists of Low speed CAN as
shown in the following figure.
Termination Resistor
The SJB has CAN termination resistor. It is possible that CAN termination
resistor value is changed by number of CAN controller. The termination resistor
value of the SJB is 510 Ω.
Function
Function Requirements
The BCM controls IPS and relay on the SJB. For example, if BCM requests
head lamp low beam control, then BCM requests related lamp control at one time.
|
NO |
BCM Control Relay |
|
1 |
Door Lock Relay |
|
2 |
Door Unlock Relay |
|
3 |
Drive Door Unlock Relay (NA, AUS) |
|
4 |
Power Window Relay |
|
5 |
Trunk Release Relay |
|
6 |
Rear Defogger Relay |
|
7 |
Front Deicer Relay |
|
8 |
Burglar Alarm Start Relay |
|
9 |
Burglar Horn Relay |
|
NO |
BCM Control IPS |
|
1 |
Head Lamp Low |
|
2 |
Head Lamp High |
|
3 |
Front Fog Lamp |
|
4 |
Tail Lamp EXT |
|
5 |
Tail Lamp INT |
|
6 |
Turn Signal Front LH |
|
7 |
Turn Signal Front RH |
|
8 |
Turn Signal Rear LH |
|
9 |
Turn Signal Rear RH |
Signal Flow Diagram
This chapter defines signal between SJB and peripheral electrical apparatus
in the form of signal flow diagram. Control of the IPS and relay is required
by BCM. Following figure expresses power source that is operating power condition
|
NO |
Switch Signal |
|
1 |
Front Left Door switch |
|
2 |
Front Right Door switch |
|
3 |
Rear Door LH switch |
|
4 |
Rear Door RH switch |
|
5 |
Driver Key Unlock switch |
|
6 |
Assist Key Unlock switch |
|
7 |
Driver Key Lock switch |
|
8 |
Assist Key Lock switch |
|
9 |
Hood switch |
|
10 |
Trunk Release switch |
|
11 |
Trunk Open Status switch |
|
12 |
Power Window Door Lock switch |
|
13 |
Power Window Door Unlock switch |
|
14 |
Driver Door Unlock Status |
|
15 |
Assist Door Unlock Status |
|
16 |
Rear Door LH Unlock Status |
|
17 |
Rear Door RH Unlock Status |
|
18 |
Driver Seat Belt switch |
|
19 |
Assist Seat Belt switch |
|
20 |
Canada DRL Option |
|
21 |
HID Option |
|
22 |
Hazard switch |
|
23 |
Turn Signal LH switch |
|
24 |
Turn Signal RH switch |
|
NO |
Relay Control Signal |
|
1 |
Door Lock Relay |
|
2 |
Door Unlock Relay |
|
3 |
Drive Door Unlock Relay (NA, AUS) |
|
4 |
Power Window Relay |
|
5 |
Trunk Release Relay |
|
6 |
Rear Defogger Relay |
|
7 |
Front Deicer Relay |
|
8 |
Burglar Alarm Start Relay |
|
9 |
Burglar Horn Relay |
|
10 |
Crash Sensor Status |
|
NO |
IPS Control Signal |
|
1 |
Tail INT |
|
2 |
Tail EXT |
|
3 |
Front Fog Lamp |
|
4 |
Head Lamp Low |
|
5 |
Head Lamp High |
|
6 |
Canada DRL |
|
7 |
Hazard from BCM |
B/Alarm Start Relay Control
B/Alarm Horn Relay Control
Door Switch Input Control
Door Lock Control
Door Unlock Status Control
DRL Ground Control
Door Lock Switch Input Control
Power window Relay Control
Rear Defogger & Front Deicer Relay Control
Seat Belt Switch Input Control
Trunk Switch Input Control
Hood Switch Input Control
Power Window Lock/unlock Switch Input Control
IPS Lamp Activity
IPS Lamp Command
Function Definition
Turn Signal
Function Definition
| 1. |
Turn Signal by ‘ Turn Signal Lh switch’ and ‘ Turn Signal Rh switch’
works during ‘Ign1=ON’ or ‘ IGN2=ON’.
|
| 2. |
Lane Change function (3 times blinking) works when ‘ON time’ of
‘Turn signal left switch’ or ‘Turn signal right switch’ is shorter than
1.8sec. During double blinking, it blinks 4 times.
|
| 3. |
Lane change function would be immediately stopped when opposite
direction switch or ‘ Hazard switch’ is ON.
|
| 4. |
Hazard function by ‘HAZARD from BCM’ has priority to Switch input.
|
| 5. |
Diagnosis for ‘Open Load’ and ‘Short to GND’ should be applied
to each load during operation when ‘Ign1=ON’ or ‘ IGN2=ON’.
|
| 6. |
During ‘ Turn Signal Lh switch = ON’ or ‘ Turn Signal Rh switch
= ON’, Double blinking function starts even 1 load is ‘Open Load’ condition.
|
| 7. |
When ‘Short to GND’ is detected, power supply to the related load
would be stopped.
|
| 8. |
When ‘Open Load’ or ‘Short to Ground’ is detected, this diagnosis
condition would be kept before one of ‘ Ign1=OFF’, ‘ IGN2=OFF’ or ‘
Turn Sigma; Lh switch = OFF’, ‘ Turn Signal Rh switch = OFF’ and ‘ Hazard
switch = OFF’ is set.
|
| 9. |
Normal Blinking Period: 85±10 period/min (duty 50%±5%)
|
| 10. |
Double Blinking Period: 157±10 period/min (duty 50%±5%). (But,
initial blinking is normal blinking)
|
Blinking
| - |
CAN message controls turn signal blinking until ‘ HAZARD from
BCM = INACTIVE’. ON/OFF Period and Duty ratio are set by BCM.
|
| - |
Blinking period by ‘Hazard Switch’ and ‘Turn Signal Lever Switch’
would be affected by turn signal diagnosis.
|
| - |
Blinking by CAN message has priority to blinking by ‘Hazard Switch’
and ‘Turn Signal Lever Switch’
|
| - |
Blinking by switch should be stopped immediately and blinking
would be controlled by CAN if ‘ HAZARD from BCM = ON/OFF’ until ‘ HAZARD
from BCM = INACTIVE’.
|
| - |
Blinking is repetitive on/off control of turn signal with 50±5%
duty ratio.
|
| - |
Blinking Period is as follows.
 Normal Blinking Period : 85±10period/min,
duty 50%±5% Double Blinking Period : 157±10period/min,
duty 50%±5% |
| - |
Blinking operation priority is as follows.
‘ HAZARD from BCM = OFF’ or ‘ HAZARD
from BCM = ON’ ‘ Hazard switch = ON’ ‘ Turn Signal Lh switch = ON’ or ‘ Turn
Signal Rh switch = ON’ |
| - |
Double blinking by ‘open load’ during normal blinking starts from
next period until double blinking condition is cancelled.
|
| - |
Double Blinking starts by the condition below when Ign1=ON or
IGN2=ON.
During Turn Signal Lh switch = ON, Turn
Signal Left Side will start double blinking when either Left Front or
Left Rear Lamp is open condition. During Turn Signal Rh switch = ON, Turn
Signal Right Side will start double blinking when either Right Front
or Right Rear Lamp is open condition. During Hazard switch = ON, both lamps
will start double blinking when at least 3 bulbs are open condition. |
| - |
Timing Chart
|
Turn Signal Function By CAN
| - |
CAN controls Turn Signal Lamp when RKE Lock/Unlock, Panic, Alarm
work.
|
| - |
CAN has priority to other turn signal controls apart from Ignition
condition.
|
| - |
When hazard from BCM is delivered, all Turn Signal Lamp control
should be stopped immediately and needs to follow CAN message.
|
| - |
Hazard from BCM controls all turn signal lamps.
|
| - |
All turn signal lamps are turned off when ‘Hazard from BCM = Inactive
or OFF’. But inactive means that there’s no more control from BCM not
switch.
|
| - |
When CAN fails, Hazard from BCM should be inactive.
|
| - |
Truth Table
|
| - |
Timing Chart
|
Hazard Function
| - |
When Hazard Switch = ON, Left and Right side turn signal lamps
should be blink apart from Ignition Switch.
|
| - |
Hazard Switch has priority to Turn Signal Lever switch.
|
| - |
Truth Table
|
| - |
Timing Chart
|
Relay Box (Engine Compartment). Schematic Diagrams
Circuit Diagram
...
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Inspection
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-
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-
...
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