Ok, so there's 3 possibilities here:
- The motor is not actually connected to the LM3. Could be a bad join, a broken wire or even the wrong wires (not meant to be an insult that last one).
- The motor draws way to much current and drives the LM3 into overload. Even if this happens the Full Load Current Test should give you a reading of some sort and the information screen should tell you "Motor Overload", though it may not if the full load current is not set.
- You have a faulty LM3
...or 4 possibilities, you have a dud motor; but I'm assuming it ran before you hardwired it.
Because you say the Full Load Current test simply fails after saying speed 100% I'd place my money on number 1. Testing without a motor attached gives the same result as you report for the Full Load Current Test. Testing with a motor attached but prevented from rotating gives a high reading in the the Full Load Current Test and the LM goes into overload.
You can try testing for number 2 by setting the full load current manually (just don't choose yes to auto set) to the maximum and then trying to drive the loco. If it goes overload you'll get the yellow warning symbol and "Motor Overload" in the info screen.
That said, I think you need to investigate the connection between the LM and the motor.
- Tim