Not anymore, the rear units are being locked out at Scunthorpe on the way to Cleethorpes (and until Doncaster on the way back) to get around the requirement for 2 Conductors, because the number of assist jobs required would be astronomical since every train now calls at Habrough (you'd probably have to double the number of jobs at each depot to cover it all, yet you still only have the same number of Conductors available).
C-ASDO equipment is completely ready to go (both on train and the beacons on the track), but it can only come in once all crews are fully briefed. All South route depots are already briefed, but Manchester crews (who also work South route services Airport-Sheffield) are not due to ongoing traction training on new trains so it cannot be turned on.
It failed, badly, when introduced last July - the on train equipment threw up dozens of door related faults. So they (sensibly) elected to focus on ensuring all the faults were understood and fixed completely before reintroducing it.