yea, that sounds consistent with how i've heard it used. to fill in more than what i already said...
class consciousness means that members of a class recognize that they are of a class (ie they have things in common with people who share their relationship to the means of production--yep, couldn't be more marxist), and make decisions based on that commonality.
since marx people have made class a more inclusive concept (women are a class, for example, and people of color), but the premise remains very much marxist.
marx promoted a belief in an external, objective reality. ie workers are part of a class whether or not they recognize it. but class consciousness (or lack thereof) meant that they might or might not make decisions in accordance with their class.
is this addressing your question?