Rest anti theft on mazda b2300 2002

Hello, "resetting" ant-theft -- there is nothing to reset on a factory installed security system. Most notably, the passive antitheft system with the key requires programming of a special key to the transceiver of the vehicle using a Mazda diagnostic tool. There is really nothing else to program or reset in the vehicle. If you have an aftermarket security system installed, there may be some kind of special procedure with that, but that wouldn't be from Mazda, so you'd have to troubleshoot with the manufacturer of that device.