Cross Check.
The isolation valve on the -2 still has the auto position, its the pack switches that don't have an auto position, simply off/on (-2) as opposed to off/auto/high(-345etc).
Crossbleed starts on the -2 aren't much different from the rest, but most of the time you don't have to do them coz the ground crew frequently will let you start both from the air cart. Smaller intakes...further out...safer!