Verify my 2007 sr5 4runner drive train
 

My understanding is I have torsen center diff and open rear and front
diffs with traction control, skid control and throttle control.

Now pushing the diff lock button does nothing in 2wd, locks the center
diff in 4wd high (and does what to traction control and skid
control??), locks the center diff in 4wd low? (and does what to
traction control and and skid control and anti lock brakes?).

No one seems to know for sure.

Anyone know?