millenia won't start

Hi dear sirs,

I have a Mazda Millenia S 1995 2.3 L with 65.673 miles on it.My car start,run for 1 or 2 seconds and then dies.There is no trouble code and every thing seems to be ok.It is like the antitheft is preventing the engine from running.How to disable the theft system to try start it.
thanks,