Body Control System Connector End Views

WARNING: This page is about a different car, the 2003 Saturn LW300, 2003 Saturn LW200, 2003 Saturn L300, and 2003 Saturn L200. However, it is still accessible from the selected car via links, so may be relevant.

Body Control Module (BCM) C1 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12084945 16 Way F Micro- Pack 100 Series (GY)
Pin	Wire Color	Circuit Number	Function
A1	--	--	Not Used
A2	L-GN	1391	Driver Door Unlock Relay Control
A3	L-BU	195	Door Lock Control
A4	WH	194	Door Unlock Relay Coil Supply Voltage
A5-A6	--	--	Not Used
A7	OG/BK	781	Driver Door Lock Switch Unlock Signal
A8	RD/BK	780	Driver Door Lock Switch Lock Signal
B1	--	--	Not Used
B2	PK	1200	Headlamp High Beam Ground
B3	--	--	Not Used
B4	L-BU	74	Park Lamp Switch Signal
B5	--	--	Not Used
B6	L-GN/BK	1137	DRL Ambient Light Sensor Signal
B7	YE/BK	1138	DRL Ambient Light Sensor Low Reference
B8	L-GN	66	A/C Request Signal

Body Control Module (BCM) C2 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110088 24 Way F Micro-Pack 100 Series (GY)
Pin	Wire Color	Circuit Number	Function
A1	L-GN	867	ABS Indicator Failure Control
A2	L-BU	1134	Park Brake Switch Signal
A3	D-BU	1201	Headlamp Low Beam Ground
A4	WH	1579	Oil Life Reset Switch Signal
A5	PU	333	Brake Fluid Level Sensor Signal
A6	BN	96	Windshield Wiper Switch Pulse Delay Signal
A7	L-BU	832	Traction Control Active Signal
A8	PK	94	Rear Wiper Switch Signal
A9	RD	228	Windshield Washer Pump Signal
A10	PK	339	Ignition 1 Voltage
A11	L-GN	80	Key In Ignition Switch Signal
A12	BK/WH	746	Right Front Door Ajar Switch Signal
B1	D-GN	264	Security Indicator Supply Voltage
B2	GY/BK	745	Left Front Door Ajar Switch Signal
B3	L-BU	292	Rear Defog Switch Signal
B4	RD/BK	744	Rear Compartment Lid Ajar Switch
B5	D-GN	392	Rear Window Washer Switch Signal
B6	WH	2192	Traction Ready Indicator Control
B7	BK/WH	56	Trunk/Liftgate Release Switch Signal
B8	BK/WH	99	Windshield Washer Fluid Level Signal
B9	YE	743	Accessory Voltage
B10	BN	9	Park Lamp Supply Voltage
B11	L-GN	1478	Coolant Level Switch Signal
B12	--	--	Not Used

Body Control Module (BCM) C3 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110244 24 Way F Micro-Pack 100 Series (PK)
Pin	Wire Color	Circuit Number	Function
A1	WH	156	Courtesy Lamp Low Control
A2	RD/WH	812	12 Volt Reference
A3	WH	352	Headlamp Relay Coil Supply Voltage
A4	D-BU	1660	Traction Control Indicator Control
A5	OG/BK	1445	BCM Program Enable Signal
A6	OG/BK	1445	BCM Program Enable Signal
A7	WH	1080	Park Lamp Relay Control
A8	L-GN/BK	592	DRL Relay Control
A9	GY	1359	LCD Backlighting Lamp Control
A10	PU	1807	Class 2 Serial Data
A11	--	--	Not Used
A12	TN	2501	High Speed GMLAN Serial Data Bus-
B1	TN/WH	816	A/T Shift Lock Solenoid Supply Voltage
B2	BK	28	Horn Relay Control
B3	OG/BK	1057	Low Reference
B4	GY	112	Windshield Wiper Switch Signal 1
B5	GY/BK	1381	LCD Dimming Signal
B6	WH	193	Rear Defog Relay Control
B7	YE	1836	Security System Sensor Signal
B8	D-GN	113	Windshield Wiper Switch Signal 2
B9	PU	1807	Class 2 Serial Data
B10	PU	1807	Class 2 Serial Data
B11	TN/WH	2500	High Speed GMLAN Serial Data Bus+
B12	--	--	Not Used

Body Control Module (BCM) C4 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110626 8 Way Metri-Pack 280 Series (L-GY)
Pin	Wire Color	Circuit Number	Function
A	OG	1732	Courtesy Lamps Supply Voltage
B-C	--	--	Not Used
D	OG	2540	Battery Positive Voltage
E	GY	8	Instrument Panel Lamp Supply Voltage
F	BK	550	Ground
G	GY	382	Trunk Release Enable Relay Switch Supply Voltage
H	OG	1640	Battery Positive Voltage