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
Description
Body control module receives various input switch signals controlling
time and alarm functions for the intermittent wiper timer, washer timer, rear
defogger timer, seat belts ...
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