Thanks for the pointers Vatorgator, I will have the service tool tomorrow and verify if I can see what the faults are.
From my troubleshooting earlier today, I can confirm that a direction is picked, although the "BKR" green LED on the drive does not go on and it faults out.
The few times that it works, that "BKR" LED goes on in the same time as the "LB" relay. It seems to be the output to drive the "LB" relay.
Get back with some more info tomorrow.
Thanks again for all your input.