01-14
5. CAN COMMUNICATION CONFIGURATION
The CAN topology is linked with CAN communication system, which consists of P-CAN and B-CAN.
The instrument cluster and BCM (Body Control Module) communicate through both P-CAN and B-CAN
at the same time, and the SKM (SMART Key Module) communicates with the instrument cluster and
BCM through B-CAN.
1) CAN Configurations (P-CAN/B-CAN)
Abbreviations Meaning Function
GCU Glow Control Unit Glow control unit
EPS Electronic Power Steering Unit Electrically driven power steering unit
BCM Body Control Module Body control module
SKM Smart Key Module Smart key module
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4) Operating Process By Power Supply
(1) Rear wiper relay
(2) Rear fog lamp relay
The rear wiper motor relay is turned on when the rear wiper switch is turned on with the ignition key ON.
This relay is turned off when the rear wiper switch is turned off.
The power is supplied to the ICM no. B6 connector through the SB4 and no. 39.
The power for the rear fog lamp relay is supplied through the memory fuse in the engine compartment
CE box and fuse no. 52 in the interior IP box. This relay is controlled (ON/OFF) by the relay operation
signal which is connected to the no. A11 of the BCM.
The rear fog lamp is turned on when the rear fog lamp switch is turned on with the headlamp turned
on (i.e. IGN2 switch ON).
Turning on the rear fog lamp switch again when the relay is activated turns off the fog lamp.
The rear fog lamps do not come ON when the IGN2 switch is turned to OFF position or the light
switch is OFF.
The rear fog lamp should not automatically come on again if it has been turned off by any methods
other than the rear fog lamp switch. 1.
2.
3.
4.Operating conditions ▶
02-30
(7) Shift lock relay
The shift lock relay is used in the models with A/T and receives power through the SB2 and fuse no. 31
in the interior fuse box with the IGN1 turned ON. If the operating conditions are met (stop lamp switch
ON), the battery power is supplied to the ICM terminal no. C1. If the gear mode conditions are met, the
relay is operated by the signals from the terminal no. 10 of the gear selector lever.
(8) Power outlet relay
The power for the power outlet relay is supplied to the ICM terminal no. B10 through the battery SB1
and fuse no. 46 in the interior fuse box. The relay is earthed through the fuse no. 47 in the interior fuse
box and then ICM terminals no. B2 and no. B12 when the ignition key is turned to ACC.
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1. SPECIFICATION
Pin No. Specification Remark
Rated voltage DC 13.5 V
-
Operating voltageDC 9.0 to 16.0 V
DC 7.0 to 18.0 V (CAN)-
Operating temperature-30 to +80°C-
Storage temperature-40 to +85°C-
TransponderFrequency134.2 KHz ± 4 KHz
-
Operating
temperature-40 to +85°C-
Max. humidity 95%-
High resistant voltage 24 V-
Dark currentBCM without SKM: 7.0 mA or less
BCM with SKM: 4.0 mA or less
All switches OFF, key removed,
all doors LOCK and in sleep
mode
Voltage drop 1.0 V or lessat pin B6 and all pins for
IN/OUT
Frequency characteristics ▶
Pin No. Specification Remark
Receive frequency433.920±0.015 MHz-
Bandwidth15KHz ± 2KHz or less-
Modulation method FSK -
Range 10M or longer (open) -
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2. FUNCTIONS
1) Functional List
FunctionSKM
without
BCMSKM
with
BCM
1 Wiper control Wiper mist & washer coupled wiper O O
Auto washer coupled wiper O O
Auto light-rain sensor coupled wiper (LIN) O O
Speed sensitive intermittent wiper O O
Wiper low/high control O O
2 Key reminder warning Key reminder warning O X
Ignition key reminder O X
External buzzer control X O
Anti-lock function when opening door O O
3 Tail lamp control Tail lamp ON warning O O
External lamp warning display X O
Tail lamp auto OFF O O
4 Door ajar warning Door status management X O
Door ajar warning O O
5 Seat belt control Seat belt warning O O
Seat belt reminder O O
6 Sunroof warning Sunroof warning control O O
Sunroof warning display X O
7 Room lamp control Door coupled room lamp and dimming control O O
Room lamp OFF control O O
Room lamp control display X O
8 Key hole illumination
controlKey hole illumination O X
9 Defogger (heated wire)
controlFront defogger timer O O
Rear defogger timer
OO
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FunctionSKM
without
BCMSKM
with
BCM
10 Keyless entry
controlTransmitter O X
Receiver O X
Remote door lock O X
Remote door unlock O X
Remote panic O X
After 30 seconds delay auto door lock O X
11 Door lock/unlock
controlLock/unlock control by door lock
controlOO
Lock/unlock control by central door lock
switchOO
Lock/unlock control by REKES signal O X
Lock/unlock control by SKM REKES
controlXO
Lock/unlock control by SKM passive entry X O
Auto door lock control O O
Auto door unlock (crash signal) control O O
12 Panic alarm Panic alarm control by REKES signal O X
Panic alarm control by SKM REKES FOB X O
13 Headlamp control
(escort)Coming-home-light control O O
14 Tailgate open control Tailgate open control in BCM without SKM O X
Tailgate open control in BCM
with SKMXO
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FunctionSKM
without
BCMSKM
with
BCM
15 Theft deterrent control Theft deterrent mode control in
controlOX
Theft deterrent mode control in smart BCM X O
16 Time lag power
window controlTime lag power window control O O
17 System power sleep
modeSystem power sleep mode control O O
18 Flasher (blinking)
functionLH turn signal control O O
RH turn signal control O O
Hazard warning flasher switch control O O
Hazard warning flasher indicator control X X
Auto hazard warning flasher control O O
Emergency hazard warning flasher control
(coupled with ABS)OO
19 DRL (Daytime Running
Light) controlDRL (Daytime Running Light) control X X
20 Fog lamp control Fog lamp control O O
21 Auto light
control (LIN)Auto light control O O
22 Immobilizer function Key coding and synchronization O X
Challenge O X
CAN information O X
23 Mirror folding/unfolding
controlFolding/unfolding control O O
Auto folding/unfolding control O O
24 Approach (puddle)
lamp control
Approach (puddle) lamp control in BCM without
SKMOX
Approach (puddle) lamp control in BCM with
SKMXO
25 SKM warning buzzer
controlSKM warning buzzer control X O
26 Diagnosis function O O
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1. OVERVIEW & FUNCTIONS
BCM (Body Control Module) controls the electric equipment on car body and outputs the control and
warning signals as below.
List Function List Function
1 Wiper control 14 Tailgate open control
2 Ignition key reminder warning 15 Theft deterrent
3 Tail lamp control 16 Time lag power window control
4 Door ajar warning 17 System power sleep mode
5 Seat belt control 18 Flasher function
6 Sunroof warning 19 DRL (daytime running lamp) control
7 Room lamp control 20 Fog lamp control
8 Key hole illumination control 21 Auto light control (LIN)
9 Defogger control 22 Immobilizer function
10 Keyless entry function 23 Folding/unfolding function
11 Door lock/unlock control 24 Approach (puddle) lamp control
12 Panic alarm 25 SKM warning buzzer control
13 Headlamp control (escort) 26 Diagnosis function