| 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 for 1996-2001 year models.
2002-2004 - ISO9141 or KWP2000
2005-2007 - ISO9141, KWP2000 or CAN
CAN used in 2008 year and later.
Some OBD-II cables schemes:
OBD-2 ISO 9141-2 (14230-4, KWP2000) simple serial cable
OBD-2 J1850 PWM, J1850 VPW serial ELM327 cable
OBD-2 universal diagnostic cable for PWM, VPW, ISO 9141-2 and CAN ISO 15765-4 CAN, SAE J1850 PWM, SAE J1850 VPW, ISO 9141-2, ISO 14230-4 and SAE J1939