Precautions for purchasing J1939 to OBD2 cables

The following precautions should be taken when purchasing J1939 to OBD2 cables:

Protocol and interface compatibility

Confirm protocol support: J1939 protocol is based on CAN bus, ensuring cable compatibility with J1939 and OBD2 protocols, and supporting communication with CAN-H (pin 6) and CAN-L (pin 14).

Check connector type: The OBD2 interface is 16 pins and needs to match the type of vehicle diagnostic port to avoid connection failure due to incompatible interfaces.

Conductor and appearance inspection

Conductor quality: The copper core should have uniform luster, no oxidation or impurities, and the conductor diameter should meet the specifications.

Appearance and craftsmanship: The high-quality cable sheath is smooth, with uniform color, and the insulation layer is free of cracks or burrs. After repeated bending, there is no obvious deformation.

Application scenario adaptation

Load and length: Select cable length and load capacity according to actual needs to avoid signal transmission being affected by overload or insufficient length.

Waterproof performance: If used in special environments (such as construction machinery), it is necessary to confirm whether the cable waterproof level meets the standard.

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