If you are getting errors about your CAN communication, we recommend starting with a visual inspection.
CAN cable testing is crucial, especially for installers. If need to manufacture your own CAN cables, it's imperative to test them with a data cable tester before finishing the installation. This precaution is vital to prevent damage to the EMS and ensure peak performance. Should you have any further questions, don't hesitate to contact us at your convenience.
Here is the wiring according to the 568B standard for the RJ45 connector. It is good to verify everything is in the correct position, not hanging loose or damaged, and generally well seated. If it clears visual inspection, it is always recommended to utilize your data cable tester.
Please Review this guide for more on CAN Cable Preparation: PowerPoint Presentation (franklinwh.com)