Thank you for you reply!

All connections at distributioncard is tight.

When measuring CAN i took one connection off at a time when measuring and then connectivity test between all Access CAN-pins.
Resistances at Display and Access 3 ok.
Controlled cable loom between modules.
Found nothing to complain about I would say.

Today I rented a computer with correct firmware for Crown and flashed the forklift with new vehicle codes just to test if I would get connection with all accesses, this was no problem.

After rekey I now get Error code 722

This code points out an issue with communication between Access 7 and Access 2 if im not mistaken?
Both of these Accesses have power at startup and no faulty CAN-wiring.

Should I replace Access 2 or is this code showing just because of the update of firmware?