A fair indication of whether SSH is running:
ps aux | grep sshd
Is something running on port 22?
netstat -at | grep -e "22\|ssh"
Netstat can also be coerced to show what application is using what port, but I'll leave that as an excercise to the reader (hint: Google) (It may also require the full netstat, rather than the busybox version)
Config files for applications will more often than not be in /usr/local/etc, so for SSH I'd check /usr/local/etc/ssh
The init script (if the application has one) will similarly usually appear in /usr/local/etc/init.d
TC doesn't (usually) start applications by default, that's what the /home/tc/.X.d folder and /opt/bootlocal.sh are for. (.X.d for desktop applications (conky, pigin, etc) and bootlocal.sh for services (ssh, apache, etc))