Q: If not, how can you get to Yorkdale mall by bus/subway from the STC bus station?
A: You're probably confused with Yorkdale and Scarborough Town Centre. The Scarborough RT stops at Scarborough Town Centre. If you want to go to York Dale, you have to get on the yellow line from Kennedy Station (assuming you're in Scarborough).. you go all the way to "St. George Station" and take a train going north to "York Dale Station". That's where the mall is. Cheers.