| Pin Number |
Name |
Description (may be empty) |
| 2 | K-Line | ABS diagnostic |
| 3 | K-Line | Radio, automatic transmission, immobilizer, steering wheel and other components |
| 4 | GND | Chassis ground |
| 5 | GND | Signal ground |
| 6 | CAN-High, J-2284 | If car isn't equipped with CAN bus, you'll find self-diagnostic slow codes (e.g. on Astra-F-G) or ABS K-Line at this pin |
| 7 | K-Line | Engine, ABS, AT, Airbag, Navigation system, Radio diagnostic |
| 8 | K-Line | TID, MID diagnostic |
| 9 | K-Line | ABS, Airbag |
| 11 | K-Line | Automatic transmission diagnostic |
| 12 | K-Line | TID, MID, ABS, AirBag, air conditioner, Kuhlerlufter-Steuergerat |
| 13 | K-Line | immobilizer, MID, Airbag diagnostic |
| 14 | CAN-Low, J-2284 | if CAN present |
| 16 | +12V | Accumulator |
Some OBD-II cables schemes:
OBD-2 ISO 9141-2 (14230-4, KWP2000) simple serial cableOBD-2 J1850 PWM, J1850 VPW serial ELM327 cable
OBD-2 universal ISO 15765-4 CAN, SAE J1850 PWM, SAE J1850 VPW, ISO 9141-2, ISO 14230-4 and SAE J1939 diagnostic cable