Structural characteristics and applications of OBD2 female connector
The OBD2 female connector is an important component of the automotive OBD system, typically located inside the vehicle and used to connect with the OBD2 male connector or diagnostic equipment. The following is an introduction to its structural characteristics and uses:
structure and characteristics
Shape and specifications: Generally a trapezoidal mouth with 16 pins, or 16 connecting wires, this design can prevent accidental insertion.
Pin function:
PIN4： The vehicle body is electrically connected to the vehicle chassis.
PIN5： Signal ground.
PIN6： If the vehicle uses a CAN line for OBD communication services, this pin is the CAN_Signal.
PIN14： If the vehicle uses CAN line for OBD communication service, this pin is the CAN_L signal.
PIN16： Used to provide permanent positive voltage for external diagnostic testing equipment, which can supply power to the equipment and also serve as a reference for K-line communication.
Action and use
Vehicle fault diagnosis and maintenance: Maintenance personnel can connect professional diagnostic equipment to the vehicle through an OBD2 female connector, read driving information and vehicle fault information feedback from the engine and other controllers, and quickly determine the location of the fault.
Vehicle operation status monitoring: Car owners can access real-time operational data such as vehicle speed, RPM, water temperature, voltage, fuel consumption, etc. through the on-board computer or related monitoring devices connected to the OBD2 interface.
Function expansion and personalized settings: Car modification enthusiasts can access specific devices or software through the OBD2 interface to achieve the expansion and personalized settings of vehicle functions, such as improving engine power output and connecting reverse image devices.
