Body Electrical System
Body Control Module (BCM) Components and Component Locations
In this manual: Body Electrical System
~5min read
Components
| No. | Connector A (24-pin) | Connector B (20-pin) | Connector C (24-Pin) |
| 1 | Battery (+) | Headlamp Low Beam Switch | Map lamp |
| 2 | IGN 1 | Headlamp High Beam Switch | AV Tail Signal |
| 3 | IGN 2 | Front Fog Lamp Switch | Buzzer (PAS) |
| 4 | ACC | Power Window Lock Switch ON | Mirror Fold Relay |
| 5 | Fog Switch | K-Line | Rear Left Seat Belt Unbuckled Reminder Indicator |
| 6 | Back-up Lamp Switch | Automatic Light Power | - |
| 7 | Key Switch | - | PAS Off Indicator |
| 8 | Key interlock switch | LIN (PAS) | Front Washer Relay |
| 9 | Rear Heater Switch | - | Low Beam Headlamp Flash |
| 10 | Crash Unlock Input | Automatic Light Switch | Front Wiper Relay |
| 11 | - | Front Wiper Intermittent Volume Switch | Mirror Fold Relay |
| 12 | PAS Option | Door Unlock Output | Foot Lamp |
| 13 | Sunroof open switch | - | ATM Solenoid |
| 14 | Automatic Folding Switch | CAN High | Key Solenoid |
| 15 | Front Washer Switch | CAN Low | Passenger Seat Belt Indicator |
| 16 | Front Intermittent Wiper | Auto light ground | Ground |
| 17 | R Position Input | Auto Light Signal | Rear Right Seat Belt Unbuckled Reminder Indicator |
| 18 | Brake Switch | - | Rear Center Seat Belt Unbuckled Reminder Indicator |
| 19 | Rear Right Seat Belt Unbuckled Reminder Switch | PAS-OFF Indicator | Map Lamp |
| 20 | Rear Center Seat Belt Unbuckled Reminder Switch | - | Safety indicator |
| 21 | Rear Left Seat Belt Unbuckled Reminder Switch | ? | Keyhole Illumination |
| 22 | RPAS, PAS Switch | - | |
| 23 | DRL Option Switch | - | |
| 24 | Ground | - |
BCM Input Terminal Voltage List
| Pin Name | Description | Interface |
| B_B+ | ECU Power Supply | 12 V (Battery Voltage) |
| L_IGN1 | High Side Switch | ON=12V |
| L_IGN2 | High Side Switch | ON=12V |
| A_ACC | High Side Switch | ON=12V |
| L_MIST Output | High Side Switch | ON=12V |
| L_REAR LAMP SW | High Side Switch | ON=GND |
| L_KEY IN SW | Low Side Switch | ON=GND |
| L'KEY LOCK SWITCH | Low Side Switch | ON=GND |
| L' REAR HEATER | Low Side Switch | ON=GND |
| L' REAR FOG LAMP SWITCH | Low Side Switch | ON=GND |
| L_PAS OPT | Low Side Switch | ON=GND |
| L_SUNROOFOPEN SW | Low Side Switch | ON=GND |
| L_AUTO FOLDING PO | Low Side Switch | GND = fold, open = unfold |
| L_FRONT WASHER SWITCH | High Side Switch | ON=12V |
| L_FRONT INT WIPER SW | High Side Switch | ON=12V |
| L_INH''R'' | High Side Switch | ON=12V |
| L_BRAKE SW | High Side Switch | ON=12V |
| L_RR SBR SW | Low Side Switch | ON=GND |
| L_RC SBR SW | Low Side Switch | ON=GND |
| L_RL SBR SW | Low Side Switch | ON=GND |
| L_RPAS OFF PO / L_PAS_SW | Low Side Switch | ON=GND |
| L_Dedicated_DRL OPT | Low Side Switch | ON=GND |
| L_HEAD LAMP LOW SW SW | Low Side Switch | ON=GND |
| L_HEAD LAMP HI SW | Low Side Switch | ON=GND |
| FRONT FOG LAMP SWITCH | Low Side Switch | ON=GND |
| L_AUTO LIGHT SW | Low Side Switch | ON=GND |
| L_TMU Rx | Low Side Switch | ON=GND |
| A_FRONT WIPER INT VOLUME SWITCH | Analog Input | H=5V, L=0V |
| A_AUTO LIGHT SIGNAL | Analog Input | H=5V, L=0V |
| P_CRASH UNLOCK INPUT | PWM Input | H=12 L=0V |
| V_AutoLightPwr | Output Power | 5V |
| GROUND (AUTO ILLUMINATION) | Ground Output | 0 V |
| V_RPASPwr (Reserved) | Output Power | 8.5 V |
| GROUND (PAS) | Ground Output | 0 V |
| DIAGNOSIS (K-LINE) | Diagnostic Communication (K-Line) | ? |
| CAN_H | CAN High Signal | ? |
| CAN I | CAN Low Signal | ? |
| GND1 (BCM) | Power Ground 1 (BCM) | ? |
| GND2 (BCM) | Power Ground 2 (BCM) | ? |
BCM Output Description and Specification
| Pin Name | Description | Load | Power |
| O_SAFETY PWDW ON | Safety Power Window Enable Output | Signal | ? |
| O_DRUnlockOut | Door Unlock Output (AV Unlock) | Signal | ? |
| O_MAP LAMP | Map Lamp Power | 12 V DC 40 W (Lamp) | B+ |
| O_AV REAR SIGNAL | AV Rear Lamp Output Signal | Signal | ? |
| O_BUZZER | PAS/RPAS buzzer output | 12 V DC (buzzer) | IGN1 |
| O_HORN RELAY | Audible Warning Relay Output | 12 V DC 200 mA | B+ |
| O_POCKET LAMP | Pocket lamp output | 12 V DC 1.2 W (LED) | B+ |
| O_RPAS OFF IND. | RPAS OFF indicator output signal | 12 V DC 1.2 W (LED) | IGN1 |
| O_HEADLAMP WASHER RELAY | Headlamp washer relay output | 12 V DC 200 mA | IGN2 |
| O_HEAD LAMP LOW SIGNAL | Low headlamp output | Signal | ? |
| O_FRONT WIPER RELAY | Front wiper relay output | 12 V DC 200 mA | IGN2 |
| O_Mirror Folding RELAY | Automatic mirror folding relay output | 12 V DC 200 mA | B+ |
| O_FOOT LAMP | Foot lamp output | 12 V DC 10 W (lamp) | B+ |
| O_ATM SOLENOID | ATM shift interlock solenoid output | 12 V DC 500 mA (solenoid) | B+ |
| O_KEY SOLENOID | Key solenoid output | 12 V DC 500 mA (solenoid) | B+ |
| O_AST SEAT BELT IND. | Front passenger seat belt reminder indicator output signal | 12 V DC 1.2 W (LED) | IGN1 |
| O_RR SBR IND | Rear right seat belt unbuckled reminder indicator output | 12 V DC 1.2 W (LED) | IGN1 |
| O_RC SBR IND | Rear center seat belt unbuckled reminder indicator output signal | 12 V DC 1.2 W (LED) | IGN1 |
| O_RL SBR IND. | Rear left seat belt reminder indicator output | 12 V DC 1.2 W (LED) | IGN1 |
| O_SECURITY IND | Security LED indicator output | 12 V DC 1.2 W (LED) | B+ |
| O_KEY HOLE ILLUMINATION LAMP | Key hole illumination lamp output | 12 V DC 2 W (lamp) | B+ |
| O_Mirror_Unfolding RELAY | Automatic mirror folding relay output | 12 V DC 200 mA | B+ |
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