For 1990-2009 cars

Table 1: | Body Control Module (BCM) C1
Table 2: | Body Control Module (BCM) C2
Table 3: | Body Control Module (BCM) C3

#### Body Control Module (BCM) C1

Connector Part Information |

• | 12084945

• | 16-Way F Micro-Pack 100 Series (GRY)

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
A1 | PNK/WHT | 1970 | ALC Headlamp Relay Output-Coil
A2 | DK GRN/WHT | 1317 | Fog Lamp Relay Output-Coil
A3 | -- | -- | Not Used
A4 | BLK | 28 | Horn Relay Output-Coil
A5-A7 | -- | -- | Not Used
A8 | PPL | 1600 | Fused Output, Ignition 0
B1 | WHT | 1080 | ALC Park Lamp Relay Output-Coil
B2 | -- | -- | Not Used
B3 | LT BLU | 1344 | Trunk Relay Output-Coil
B4 | -- | -- | Not Used
B5 | LT GRN/BLK | 592 | DRL Relay Output-Coil
B6 | -- | -- | Not Used
B7 | LT GRN/BLK | 394 | Door Handle Switch Signal, Left Front
B8 | BRN | 341 | Fused Output, Ignition 3

#### Body Control Module (BCM) C2

Connector Part Information |

• | 12110088

• | 24-Way F Micro-Pack 100 Series ( LT GRY)

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
A1 | -- | -- | Not Used
A2 | WHT | 682 | Door Lock/Unlock Switch Signal
A3 | YEL/BLK | 1138 | Ambient Light Sensor Signal Return
A4 | -- | -- | Not Used
A5 | PNK | 1200 | High Beam Input
A6 | BLK | 1835 | Passlock™ Signal Return
A7 | BLK | 1576 | Trunk Release Switch Input
A8 | LT GRN | 696 | Cruise Cancel Switch Input (Oldsmobile Only)
A9 | LT BLU | 1134 | Park Brake Switch Signal
A10-A11 | -- | -- | Not Used
A12 | PNK/BLK | 1379 | Oil Change/TIMS Reset Switch Signal
B1 | ORN | 1732 | Inadvertent Power Control Output
B2 | LT GRN/BLK | 1137 | Ambient Light Sensor Signal
B3 | -- | -- | Not Used
B4 | DK BLU | 1201 | Low Beam Input
B5 | -- | -- | Not Used
B6 | YEL | 1836 | Passlock™ Signal
B7 | -- | -- | Not Used
B8 | BRN | 9 | Parklamp Input
B9 | PNK | 439 | Fused Output, Ignition 1
B10 | LT BLU | 395 | Door Handle Switch Signal, Right Front (2 door) and Rear Passenger Door Jamb Switch Signal (4 door)
B11 | BLK/WHT | 238 | Seat Belt Switch Signal
B12 | LT GRN | 80 | Key Reminder Switch Signal

#### Body Control Module (BCM) C3

Connector Part Information |

• | 12110244

• | 24-Way F Micro-Pack 100 Series (PNK)

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
A1 | -- | -- | Not Used
A2 | YEL | 356 | Driver Door Unlock Relay Feed-Coil
A3 | LT GRN | 377 | Remote Control Door Lock Receiver Serial Data Signal
A4 | ORN | 192 | Fog Lamp Switch Input
A5 | BRN/WHT | 1571 | Traction Control System Switch Signal
A6 | BLK/WHT | 99 | Windshield Washer Fluid Level Sensor Signal
A7 | -- | -- | Not Used
A8 | LT BLU | 195 | All Door Lock Relay Feed Coil
A9 | -- | -- | Not Used
A10 | BLK/WHT | 151 | Ground
A11 | WHT | 156 | Interior Lamp Control
A12 | ORN | 340 | Fused Output, Battery
B1 | ORN | 1540 | Fused Output, Battery
B2 | PPL | 1807 | Serial Data Signal, Class 2
B3 | WHT | 194 | Power Door Unlock Relay Feed Coil
B4 | WHT | 1459 | Passlock™ Power 12 volt Reference
B5 | -- | -- | Not Used
B6 | YEL/BLK | 68 | Low Coolant Level Switch Input
B7 | LT GRN | 66 | A/C Switch Input
B8-B12 | -- | -- | Not Used