汽车常用连接器接口定义
OBD II 连接器
也称SAE J1962连接器，其包含有CAN线，K线，J1850总线。
| Contact | General allocation |
|---|---|
| 1,3,8,9,11,12,13 | Assignment of contacts 1,3,8,9,11,12 and 13 in the vehicle connector is left to the discretion of the vehicle manufacture. |
| 2 | Bus positive line of SAE J1850. |
| 4 | Chassis ground |
| 5 | Signal ground |
| 6 | CAN_H line of ISO 15765-4 |
| 7 | K line of ISO 9141-2 and ISO 14230-4 |
| 10 | Bus negative line of SAE J1850 |
| 14 | CAN_L line of ISO 15765-4 |
| 15 | L line of ISO 9141-2 and ISO 14230-4 |
| 16 | Permanent positive voltage |
CAN DB9
D型数据接口连接器，按照接口数据细分为A型（15针），B型（25针），C型（37针），D型（50针），E型（9针）。计算机并口即为DB25针连接器，串口为9针连接器；DB9在不同的应用场合中，其引脚定义不同。如下简要介绍DB9在CAN通信场合的定义。
| Contact | General allocation |
|---|---|
| 1,4,8 | Reserved |
| 2 | CAN_L |
| 3 | GND/VB- |
| 5 | SHIELD(屏蔽线) |
| 6 | GND |
| 7 | CAN_H |
| 9 | VB+ |
CANcable2Y pin
Vector CAN设备常用连接器；
