What, ETCS-ready on 323s and 769s (the likely trains Northern would put on Manchester-Huddersfield)?
That wasn't the question.
The Arriva franchise agreement included a requirement to bring all the retained stock to 'ETCS ready' ie all the wiring and equipment boxes are present, making any future fitment a relatively quick project.
At the end of that after the fleet changes, I don't think we've seen anything to suggest the current situation for 323s and 769s.
At that time Northern would have operated peak time only Manchester to Huddersfield stoppers (intended to be 150/156), Leeds to Wigan via Dewsbury (intended to be 170s), Bradford to Huddersfield and Huddersfield to Castleford.
It's also far from clear those units would be used on Manchester - Huddersfield, given the timescale we're talking about and the extent to which those fleets are already committed to other lines of route....