Hyundai Sonata: Body Control Module (BCM). Schematic Diagrams
BCM Connector Terminals
BCM Input Signal SPEC
No |
Input signal name |
Logic state |
ON/OFF voltage recognition level (V) |
Remarks |
A01 |
B+ |
ON = Battery |
9V ~ 16V |
|
A02 |
IGN1 |
ON = Battery (IGN KEY is ON or START position) |
7V or more / 4V or less |
|
A03 |
IGN2 |
ON = Battery (IGN KEY is ON position) |
7V or more / 4V or less |
|
A04 |
Brake switch |
ON = Battery (Starting state) |
7V or more / 4V or less |
|
A05 |
Mist switch |
ON = Battery |
7V or more / 4V or less |
|
A06 |
Crash unlock input |
- |
- |
PWM |
A07 |
Head lamp low switch |
OPEN = GND |
2V or less / OPEN (Reference value:4V or more) |
|
A08 |
Head lamp high switch |
OPEN = GND |
2V or less / OPEN (Reference value:4V or more) |
|
B03 |
Front fog lamp switch |
OPEN = GND |
2V or less / OPEN (Reference value:4V or more) |
|
A13 |
ACC |
ON = Battery |
7V or more / 4V or less |
|
A16 |
INH 'R' switch |
ON = Battery |
7V or more / 4V or less |
|
A18 |
Wiper INT volume |
- |
- |
A/D |
A23 |
Key inter lock switch |
ON = GND |
2V or less / OPEN (Reference value:4V or more) |
|
A21 |
Key in switch |
ON = GND |
2V or less / OPEN (Reference value:4V or more) |
|
A22 |
Tail lamp switch |
ON = GND |
2V or less / OPEN (Reference value:4V or more) |
|
B01 |
LIN (RPAS) |
- |
- |
Communi cation |
B11 |
Auto light signal |
- |
- |
A/D |
B13 |
Auto light switch |
ON = GND |
2V or less / OPEN (Reference value:4V or more) |
|
B14 |
Diagnosis (K-Line) |
- |
- |
Communi cation |
B15 |
Rear defogger switch |
ON = GND |
2V or less / OPEN (Reference value:4V or more) |
|
Pin Arrangement
Connector A
No. |
Signal Label |
Signal Definition |
A01 |
B+ |
Battery |
A02 |
IGN1 |
Local ignition1 input in BCM |
A03 |
IGN2 |
Local ignition2 input in BCM |
A04 |
Brake switch |
Brake switch |
A05 |
Mist switch |
Mist switch |
A06 |
Crash unlock input (PWM) |
Crash unlock input from airbag |
A07 |
Head lamp low switch |
Head lamp low switch |
A08 |
Head lamp high switch |
Head lamp high switch |
A09 |
- |
- |
A10 |
- |
- |
A11 |
- |
- |
A12 |
- |
- |
A13 |
ACC |
Local ACC input in BCM |
A14 |
- |
- |
A15 |
- |
- |
A16 |
INHIBIT 'R' switch |
INHIBIT 'R' switc-h- |
A17 |
Washer switch |
Washer switch |
A18 |
Wiper INT switch |
Wiper INT switch |
A19 |
- |
- |
A20 |
Wiper INT volume |
Wiper INT volume |
A21 |
Key in switch |
Key in switch |
A22 |
Tail lamp switch |
Tail lamp switch |
A23 |
Key inter lock switch |
Key inter lock switch |
A24 |
GND (Signal) |
Signal ground |
Connector B
No. |
Signal Label |
Signal Definition |
B01 |
LIN (RPAS) |
LIN Communication |
B02 |
- |
- |
B03 |
Front fog lamp switch |
Front fog lamp switch |
B04 |
Parking brake switch |
Parking brake switch |
B05 |
- |
- |
B06 |
- |
- |
B07 |
AV tail |
AV tail |
B08 |
CAN high |
CAN high |
B09 |
CAN low |
CAN low |
B10 |
GND (Auto light) |
Auto light ground |
B11 |
Auto light signal |
Auto light signal |
B12 |
Auto light power |
Auto light power |
B13 |
Auto light switch |
Auto light switch |
B14 |
Diagnosis (K-Line) |
K-line communication |
B15 |
Defogger switch |
Defogger switch |
B16 |
Assist seat belt indicator LED |
Assist seat belt indicator LED |
B17 |
Security indicator LED |
Security indicator LED |
B18 |
- |
- |
B19 |
Head lamp low signal |
Head lamp low signal |
B20 |
Speed IMS |
Speed state to IMS |
Connector C
No. |
Signal Label |
Signal Definition |
C01 |
Safety power window enable high |
Safety power window enable high |
C02 |
Key in state IMS |
Key in state to IMS |
C03 |
- |
- |
C04 |
Room lamp |
Room lamp |
C05 |
- |
- |
C06 |
Key SOL |
Key solenoid |
C07 |
ATM SOL |
ATM solenoid |
C08 |
Glove box switch |
Glove box switch |
C09 |
Key hole illumination Lamp LED |
Key hole illumination Lamp LED |
C10 |
- |
- |
C11 |
Glove box lamp |
Glove box lamp |
C12 |
- |
- |
C13 |
- |
- |
C14 |
Wiper relay |
Wiper relay |
C15 |
- |
- |
C16 |
Head lamp washer relay |
Head lamp washer relay |
C17 |
- |
- |
C18 |
GND (POWER) |
Power ground |
Circuit Diagram
Body Control Module (BCM). Description and Operation
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