Pin | Signal | Description |
2 | J1850 Bus+ | |
4 | CGND | Chassis ground |
5 | SGND | Signal ground |
6 | CAN High | J-2284 |
7 | K-LINE | (ISO 9141-2 and ISO/DIS 14230-4) |
10 | J1850 Bus- | |
14 | CAN Low | J-2284 |
15 | ISO 9141-2 L-LINE | (ISO 9141-2 and ISO/DIS 14230-4) |
16 | +12v | Battery power |
ISO 9141 protocol used.
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