Hi, Have a BT RRB2C/14, unit will not go through self diagnostics when you turn it on, only 2 dots on the screen and the fans go. no steering, no drive, no hydraulics, only horn works, no error code comes on the screen due to the fact it does not go through diagnostics. As they have a few of the same machines we have tried the A5 card in a different truck and it works correctly, have tried swapping, screen , key switch, steering and hyd controls but still wont work, any help would be great.
Thanks