| Table 1: | Vehicle Interface Unit (VIU) C1 |
| Table 2: | Vehicle Interface Unit (VIU) C2 |
| Table 3: | Vehicle Communication Unit (VCU) |
| |||||||
|---|---|---|---|---|---|---|---|
Connector Part Information |
| ||||||
Pin | Wire Color | Circuit No. | Function | ||||
A1 | -- | -- | Not Used | ||||
A2 | LT GRN/BLK | 1098 | VCM 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 Radio Right Audio Signal | ||||
A8 | BRN/WHT | 367 | Remote Radio 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 | -- | -- | Not Used | ||||
A16 | ORN | 2240 | Battery Positive Voltage | ||||
B1 -B8 | -- | -- | Not Used | ||||
B9 | GRY | 655 | Cellular Telephone 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/BLK | 1798 | Ground | ||||
B15 | PPL/WHT | 2513 | Ignition ON Signal | ||||
B16 | -- | -- | Not Used | ||||
| |||||||
|---|---|---|---|---|---|---|---|
Connector Part Information |
| ||||||
Pin | Wire Color | Circuit No. | Function | ||||
E1 | BLK/WHT | 351 | 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 | 2140 | Battery Positive Voltage | ||||
F1 | BLK | 351 | Ground | ||||
F2-F8 | -- | -- | Not Used | ||||
F9 | BRN/WHT | 2517 | Keypad Red LED Signal | ||||
F10-F16 | -- | -- | Not Used | ||||
| |||||||
|---|---|---|---|---|---|---|---|
Connector Part Information |
| ||||||
Pin | Wire Color | Circuit No. | Function | ||||
1 | DK GRN/WHT | 2507 | Audio Transmit Signal | ||||
2 | -- | -- | Not Used | ||||
3 | GRY/BLK | 1798 | Ground | ||||
4 | ORN | 2240 | 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 | BARE | 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 | LT BLU | 1235 | Audio Low Reference | ||||
25 | -- | -- | Not Used | ||||
