Anti Theft device Problem
 

I have a 2002 Tacoma and when I bought it, it had an anti theft device on it where you have to pull back on the turn signal to start the vehicle. I am beginning to have problems with that. I don't have a clue to start to find the problem. Do anyone here have an idea where I might look. To get into the turn signal, I will have to pull the steering wheel. Anyone know where I might begin to look?
J