Hello!
It sounds like the data link connector may not be receiving power. I've attached a few diagrams (below) so that you can see which fuses power the data link connector. The computer data lines schematic is in two parts so it should be a little easier to read.
If you locate the junction box at the left kick panel, fuse 6 (10 amp) should have power at all times. Fuse 3 (10 amp) should have power with the ignition on.
Additionally, you may find this video tutorial helpful. It discusses a few of the reasons that you may not be getting power to the OBD port:
https://youtu.be/6Tlg3JmgNSQ
This repair guide discusses how to scan a CAN system:
https://www.2carpros.com/articles/can-scan-controller-area-network-easy
Please let us know what you find, and we would be happy to assist you further.
Thanks, Wendy W
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Monday, February 14th, 2022 AT 7:53 AM