Cellular Communication Connector End Views

Vehicle Interface Unit (VIU) Control Module - C1 Component Views

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110113 32-Way F Micro-Pack 100 Series (RED)
Pin	Wire Color	Circuit No.	Function
A1	-	-	Not Used
A2	ORN	1044	Radio Class 2 Serial Data
A3	DK GRN	835	Entertainment and Comfort Serial Data
A4-A5	-	-	Not Used
A6	BLK/WHT	372	Remote Radio Audio Output (-)
A7	DK GRN/ WHT	368	Remote Playback Device Right Audio Signal
A8	BRN/WHT	367	Remote Playback Device Left Audio Signal
A9	BARE	814	Drain Wire
A10	LT BLU	1235	Audio Low Reference
A11	BRN/WHT	2506	Audio Return Signal
A12	DK GRN/ WHT	2507	Audio Transmit Signal
A13	BARE	1792	Drain Wire
A14	GRY/BLK	2508	Microphone Signal
A15	BARE	1782	Drain Wire
A16	ORN	2540	Battery Positive Voltage
B1-B8	-	-	Not Used
B9	GRY	655	Cellular Microphone Signal
B10	BARE	1705	Drain Wire
B11	TAN/BLK	2510	OnStar Serial Data Return
B12	DK BLU/ WHT	2511	OnStar Serial Data (-)
B13	LT BLU/ BLK	2512	OnStar Serial Data (+)
B14	GRY	2520	Transceiver Low Reference
B15	PPL/WHT	2513	Ignition ON Signal
B16	-	-	Not Used

Vehicle Interface Unit (VIU) Control Module - C2 Component Views

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110115 32-Way F Micro-Pack 100 Series (BLU)
Pin	Wire Color	Circuit No.	Function
E1	BLK	1850	Ground
E2-E3	-	-	Not Used
E4	DK GRN/ WHT	2514	Keypad Signal
E5	YEL/BLK	2516	Keypad Green LED Signal
E6	LT GRN/ BLK	2515	Keypad Supply Voltage
E7-E15	-	-	Not Used
E16	ORN	2240	Battery Positive Voltage
F1	BLK	1850	Ground
F2-F3	-	-	Not Used
F4	ORN/BLK	2518	Keypad Low Reference
F5	-	-	Not Used
F6	PNK	739	Ignition 1 Voltage & UE1
F7-F8	-	-	Not Used
F9	BRN/WHT	2517	Keypad Red LED Signal
F10	-	-	Not Used
F11	BLK	707	RAP Relay Coil Supply Voltage & UE1
F12-F15	-	-	Not Used
F16	ORN	2240	Battery Positive Voltage

Vehicle Communication Unit (VCU) Component Views

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		205207-1 25 - Way F (BLK)
Pin	Wire Color	Circuit No.	Function
1	DK GRN/ WHT	2507	Audio Transmit Signal
2	-	-	Not Used
3	BLK	2520	Transceiver Low Reference
4	ORN	2540	Battery Positive Voltage
5	PPL/WHT	2513	Ignition On Signal
6	BRN/WHT	2506	Audio Return Signal
7-10	-	-	Not Used
11	LT BLU/ BLK	2512	OnStar Serial Data (+)
12	DK BLU/ WHT	2511	OnStar Serial Data (-)
13	-	-	Not Used
14	BLK	1792	Drain Wire
15	GRY/BLK	2508	Microphone Signal
16-17	-	-	Not Used
18	TAN/BLK	2510	Onstar Serial Data Return
19-23	-	-	Not Used
24	BLK/WHT	1235	Audio Low Reference
25	-	-	Not Used

OnStar Button Assembly Component Views

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12047886 8-Way F Metri-Pack 150 Series (BLK)
Pin	Wire Color	Circuit No.	Function
A	LT GRN/ BLK	2515	Keypad Supply Voltage
B	DK GRN/ WHT	2514	Keypad Signal
C-D	-	-	Not Used
E	ORN/BLK	2518	Keypad Low Reference
F	YEL/BLK	2516	Keypad Green LED Signal
G	BRN/WHT	2517	Keypad Red LED Signal
H	-	-	Not Used

Cellular Telephone Microphone Component Views

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12047662 2-Way F Metri-Pack 150 Series (BLK)
Pin	Wire Color	Circuit No.	Function
A	BARE	1705	Drain Wire
B	GRY	655	Cellular Microphone Signal