Body Electrical System > BCM (Body Control Module)

INSPECTION

BCM CONNECTORS

PIN NO.	CONNECTOR A	CONNECTOR B	CONNECTOR C	CONNECTOR D
1	Battery Voltage	Burglar alarm relay output	LIN network line	All 4-door open switch signal input
2	Room lamp output with decay	Rear right power window up relay output	Rain sensor data signal input	Hazard switch signal input
3	Ignition 1 voltage	Rear left power window up relay output	Rain sensor data output
4			Diagnostic Communication line K	Seatbelt status signal input
5		Horn relay signal output	Accessory signal input	Rear fog lamp switch signal input
6	Foot lamp output		Hood open status signal input	DRL switch signal input
7	GROUND1	Rear fog lamp relay signal output	Inhibition P signal Input	Alternator voltage monitoring signal input
8	GROUND2	Tail lamp relay signal output	Key remainder signal input	Power T/GATE signal output
9	Supply ground to sunlight		Code saving data signal input	Head lamp high status indicator output
10	Sunlight sensor signal input	Tail lamp relay signal output	Vehicle speed data input
11	Power supply to sun light sensor	Tail lamp relay signal output	Communication with external receiver	Security Led output
12	Power supply to turn lamp	CAN low	T/GATE flasher switch signal input	TGATE open / close status signal input
13	Turn right relay output	CAN high	Ignition 2 signal input	Parking brake status signal input
14	Turn left relay output	Drive side Seatbelt Indicator signal output	T/GATE overhead open/close switch signal input
15		AV TAIL control output related to autolight sensor		Front Fog lamp switch signal input
16		Rear right power window down relay output	TGATE outside Handle	Defogger switch signal input
17		Rear left power window down relay output		Over speed signal input
18		Front fog lamp relay signal output
19		Key illumination lamp signal output		DEICER switch signal input
20		Head lamp high relay signal output		Buzzer control output related to RF Key
21				Flasher sound buzzer control output
22		T/GATE latch relay output		TGATE latch signal output (Signal output)
23		Head lamp low relay signal output
24		T/GATE lamp relay signal output
25		Head lamp washer relay output
26		Rear Window Lock output

BCM INPUT/OUTPUT SPECIFICATION

CONNECTOR A

PIN NO.	PIN NAME	Input acquisition threshold voltage (Operating Voltage 9V to 16V at normal temperature / Output type)
1	Battery Voltage	Operating Voltage 9V ~ 16V
2	Room lamp output with decay	Low side / FET
3	Ignition 1 voltage	Analog input
4
5
6	Foot lamp output	Low side / FET
7	GROUND 1	GND
8	GROUND 2	GND
9	Supply ground to sunlight	GND
10	Sunlight sensor signal input	Analog input
11	Power supply to sun light sensor	Power supply (5V)
12	Power supply to turn lamp	Bypass Voltage
13	Turn right relay output	High side / bypass
14	Turn left relay output	High side / bypass

CONNECTOR B

PIN NO.	PIN NAME	Input acquisition threshold voltage (Operating Voltage 9V to 16V at normal temperature / Output type)
1	Burglar alarm relay output	Low side / FET
2	Rear right power window up relay output	Low side / FET
3	Rear left power window up relay output	Low side / FET
4
5	Horn relay signal output	Low side / FET
6	Overspeed Indicator output	Low side / FET
7	Rear fog lamp relay signal output	Low side / FET
8	Tail lamp relay signal output	Low side / FET
9		Low side / FET
10	Defogger relay signal output	Low side / FET
11	Deicer relay signal output	Low side / FET
12	CAN low	Communication line
13	CAN high	Communication line
14	Drive side Seatbelt Indicator signal output	Low side / FET
15	AV TAIL control output related to autolight sensor	Low side / FET
16	Rear right power window down relay output	Low side / FET
17	Rear left power window down relay output	Low side / FET
18	Front fog lamp relay signal output	Low side / FET
19	Key illumination lamp signal output	Low side / FET
20	Head lamp high relay signal output	Low side / FET
21		Low side / FET
22	T/GATE latch relay output	Low side / FET
23	Head lamp low relay signal output	Low side / FET
24	T/GATE lamp relay signal output	Low side / FET
25	Head lamp washer relay output	Low side / FET
26	Rear Window Lock output	High side / FET

CONNECTOR C

PIN NO	PIN NAME	Input acquisition threshold voltage (Operating Voltage 9V to 16V at normal temperature / Output type
1	LIN network line	Communication line
2	Rain sensor data signal input	PWM input
3	Rain sensor data output	PWM output
4	Diagnostic Communication line K	Communication line
5	Accessory signal input	Switch on 5V above
6	Hood open status signal input	Switch off 2V below
7	Inhibition P signal Input	Hood close 5V above
8	Key remainder signal input	Hood open 2V below
9	Code saving data signal input	Switch on 5V above
10	Vehicle speed data input	Switch off 2V below
11	Communication with external receiver	Key out 5V above
12	T/GATE flasher switch signal input	Key in 2V below
13	Ignition 2 signal input	Communication line
14	T/GATE overhead open/close switch signal input	Freq. input
15		Communication line
16	TGATE outside Handle	Switch on 5V above

CONNECTOR D

PIN NO	PIN NAME	Input acquisition threshold voltage (Operating Voltage 9V to 16V at normal temperature / Output type
1	All 4-door open switch signal input	Switch on 5V above Switch off 2V below
2	Hazard switch signal input	Switch on 5V above Switch off 2V below
3		-
4	Seatbelt status signal input	Belt 5V above Unbelt 2V below
5	Rear fog lamp switch signal input	Switch on 5V above Switch off 2V below
6	DRL switch signal input	Switch on 5V above Switch off 2V below
7	Alternator voltage monitoring signal input	Analog input
8	Power T/GATE signal output	Low side / TR
9	Head lamp high status indicator output	High side / TR
10
11	Security Led output	Low side / TR
12	TGATE open / close status signal input	Switch on 5V above Switch off 2V below
13	Parking brake status signal input	Switch on 5V above Switch off 2V below
14
15	Front Fog lamp switch signal input	Switch on 5V above Switch off 2V below
16	Defogger switch signal input	Switch on 5V above Switch off 2V below
17	Over speed signal input	Switch on 5V above Switch off 2V below
18
19	DEICER switch signal input	Switch on 5V above Switch off 2V below
20	Buzzer control output related to RF Key	High side / TR
21	Flasher sound buzzer control output	High side / TR
22	TGATE latch signal output (Signal output)	Low side / TR

BCM ACTUATOR OPERATION

SCAN tool can operates all actuators controlled by BCM by force.

NO.	BCM DISPLAY
1	Tail lamp
2	Head lamp low
3	Head lamp high
4	Head lamp high indicator
5	Front fog lamp
6	Front fog lamp indicator
7	Rear fog lamp
8	Day Running light
9	Low speed wiping relay
10	High speed wiping relay
11	Defroster relay
12	Trunk release
13	B/A Horn
14	Room Lamp
15	Hazard Lamp
16	Left turn signal
17	Right turn signal
18	Internal buzzer
19	Key illumination
20	Seat Belt Indicator(Driver side and Assist side)
21	Head Lamp Washer
22	Start Inhibition output
23	External Buzzer output
24	Security Led output
25	Rear RH Power window Up
26	Rear RH Power Window Down
27	Rear LH Power window Up
28	Rear LH Power Window Down
29	Foot lamp
30	AV TAIL

BCM DIAGNOSIS WITH SCAN TOOL

1.	It will be able to diagnose defects of BCM with scan tool quickly. Scan tool can operates actuator forcefully, input/output value monitoring and self diagnosis.

2.	Select model and "BCM".

3.	Select "Current data", if you will check current data of BCM. It provides power supply status, multi function status, lamp status, door status, lock system status, wiper, auto light status and so on.

4.	If you will check BCM data operation forcefully, select "Actuation test".

You can turn ON/OFF as below option function with the user option program.

(1)	LOCK / UNLOCK comfirming alarm: Alarm sound ON/OFF control when you LOCK/UNLOCK doors with transmitter.

(2)	Mechanical LOCKING system: Arm/Disarm ON/OFF when you lock the door with the mechanical key.

(3)

AUTO DOOR LOCK/UNLOCK system ON/OFF.

A.	Vehicle speed gearing AUTO DOOR LOCK (more than 20km/h)

B.	AUTO DOOR LOCK non application

C.	Shift lever gearing AUTO DOOR LOCK

D.	Driver seat AUTO DOOR LOCK

E.	AUTO DOOR UNLOCK non application

F.	All doors UNLOCK in the case of driver door UNLOCK

G.	All doors UNLOCK in the case of IGN key seperation.

(4)

Riding & Getting off gearing

A.	Seat installation state ON/OFF

B.	Seat riding & getting off gearing ON/OFF

C.	Column installation state ON/OFF

D.	Column riding & getting off gearing ON/OFF

REMOVAL

1.	Disconnect the negative (-) battery terminal.

2.	Remove the crash pad lower panel (A). Avoid damaging retaining clip. (Refer to the Body group - Crash pad)

3.	Remove the body control module (A) and after loosening 2 nuts and disconnecting connector.

INSTALLATION

1.	Connect the connector and reassemble the body control module.

2.	Reassemble the crash pad lower panel.