I am not familar with the DRBIII emulator.
Ok so the battery is good thats one thing down.
Have you done the manual reset of the steering angle sensor by starting the car turning the wheel all the way left then right and back to center?
Without codes it is very hard to say what exactly is going on.
Wish I could help more.
Keep giving us feedback. I'm sure some one with the emulator will chime in and give you a hand.