Diagnostic Tool Adapter 100cm DB9 Female to OBD-II 16 Pin Connector for Vehicle Interface This adapter provides a physical connection between a DB9 serial interface device and the vehicle's OBD-II Data Link Connector (DLC).It is designed for use with OBD-II compliant vehicles. Length: 100 cm OBD-II Connector: 16-pin male DB9 Connector: 9-pin female Pin mapping: OBD-II Pin 16 (Power) → DB9 Pin 9 OBD-II Pin 4 (Chassis Ground) → DB9 Pins 1 and 2 OBD-II Pin 5 ( Ground) → DB9 Pins 1 and 2 OBD-II Pin 6 (CAN J-2284) → DB9 Pin 3 OBD-II Pin 14 (CAN Low J-2284) → DB9 Pin 5 OBD-II Pin 7 (ISO 9141-2 K-Line) → DB9 Pin 4 OBD-II Pin 15 (ISO 9141-2 L-Line) → DB9 Pin 8 OBD-II Pin 10 (J1850 BUS−) → DB9 Pin 6 OBD-II Pin 2 (J1850 BUS+) → DB9 Pin 7 This is an adapter only.It does not function as a standalone diagnostic interface and requires a compatible DB9-equipped diagnostic tool or interface device to operate.It is not intended for direct connection to a laptop without an intervening serial interface device. Compatible with all OBD-II compliant vehicles.All 1996 and newer cars and light trucks sold in the United States are required to be OBD-II compliant, including domestic and European models.Some 1994 and 1995 model year vehicles may also be OBD-II compliant.Verify compliance by checking the Vehicle Emissions Control Information Label, typically located under the hood or near the engine compartment.The label will state “OBD-II Certified” if applicable.OBD-II compliant vehicles must have a standardized 16-pin DLC located under the dashboard.