The week pass you are talking about might be a pass for 2 zones (Paris intramuraux) inside Paris city. You can't use it for Airport to Paris city (5 zone) unless you buy a pass covering 5 zones, in this case it is much cheaper than (equal to a ticket to the airport and Euro Disney).
You may double check and calculate the cost before you buy the pass.
Enjoy your journey.
You may double check and calculate the cost before you buy the pass.
Enjoy your journey.