Hello from Mexico, here's the solution (worked for me):
Pull out the stereo, then look for the cables coming out from the ignition switch, then start the car, when it's running cut the yellow wire, that will left theft system light on all the time, at this point you will not have problems starting the car anymore, you have been disabled the theft system.
Now, once you have disabled it, you need to do some hack to the bcm to turn off the light, how can you do that ?? Easy, put an ohmeter connected to yellow wire from ignition switch and ground (probably doesn't show any resistance) then put REVERSE (we know that the car wouldn't start) and turn the key to start position, at this time ohmeter shows up the resistor value in the ignition cylinder, then you need to find some resistor value with 10% tolerance up or down to replace (i have to put 3 resistors in serie or continuous to reach the ohms value)when you have it with car started connect the new resistor from ground and now to the yellow wire that goes to the bcm and should turn off the light, if everything went fine you can solder that resistor to the 2 cables and use tape, now you have been disabled theft system and turn off the light too on the dash, because the resistor value always be the same even with the car turned off, and you can start the car rapidly with no problems, it starts and the light goes off, if you have any doubt i left my email:
[email protected]
Regards.