The smart key system is totally composed of a smart key modue, a power distribute mode, an external receiver and a smart key holder.

The SMK 2.5, the smartkey system which has not Fob holder, is embed with a Demodulator. so the two Immo coil lines are connected this SSB.

Smart key units sends a certified signal to the PCM/ECM through this process and then takes the engine to start by receiving the permission signal of engine start.