OBDII 16-pin DLC Pinout：
1. Vendor option
2. Bus + (SAE J1850 PWM, SAE 1850 VPW)
3. Vendor option
4. Chassis Ground
5. Signal Ground
6. CAN High (ISO 15765-4)
7. K line (ISO 9141-2, SAE J2234)
8. Vendor option
9. Vendor option
10. Bus - (SAE J1850 PWM)
11. Vendor option
12. Vendor option
13. Vendor option
14. CAN Low (ISO 15765-4)
15. L (ISO 9141-2, ISO 14230-4)
16. Battery Positive
