Description
OBD II is a universal OBD II Male connector 16 PIN Colour in black of Ultra -version. The OBD-2 must have a 4, 5 for ground connections and a P-in 16 for 12V power supply from the vehicle battery. Prior to OBD, auto manufacturers did not standardize DTC’s (diagnostic trouble code). OBD-I begins standardized DTC’s. OBD-II added specific tests to determine the vehicle’s emission performance OBD-II adds more features, and is in the regulatory development phase. Many of old cars do not have 16 pin connector.
Universal OBD2 Connector:
Female OBD-II connector on a car Female OBDII Male Connector 16 PIN pinout – front view The OBDII specification provides for a standardized hardware interface—the female 16-pin (2×8) J1962 connector. Unlike the OBD-I connector, which was sometimes found under the hood of the vehicle, the OBD-II Male Connector 16 PIN connector is required to be within 2 feet (0.61 m) of the steering wheel (unless an exemption is applied for by the manufacturer, in which case it is still somewhere within reach of the driver). SAE J1962 defines the pinout of the connector as:
Universal OBDii Male Connector 16 PIN Pinout Configuration
| Pin Number | Pin Name | Description |
| 1,3,8,9,11,12,13 | Blank | These pins are not standard and are vendor specific. It is also not required for normal communication/interfacing |
| 2 | SAE J1850 Bus+ | This protocol uses Variable Pulse Width and is normally used by GM vehicles. This is the Bus positive pin of the protocol. |
| 10 | SAE J1850 Bus- | This protocol uses Variable Pulse Width and is normally used by GM vehicles. This is the Bus negative pin of the protocol. |
| 4,5 | Ground | Ground of complete system of the Car including chassis |
| 6 | ISO15765-4 CAN High | It follows 2-wire CAN protocol at 1Mbps speed. This is the CAN high Pin Male Connector 16 PIN |
| 14 | ISO15765-4 CAN Low | It follows 2-wire CAN protocol at 1Mbps speed. This is the CAN low Pin |
| 7 | ISO 9141 – K Line | It follows asynchronous serial communication protocol, this pin is the K line |
| 8 | ISO 9141 – L Line | It follows asynchronous serial communication protocol, this pin is the L line |
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