| SONATA(YF) >2012 > G 2.4 GDI > Body Electrical System > BCM (Body Control Module) > 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