Engine will crank but not start

Hello, my car refused to start but it is cranking properly. Whenever I put in the key in the cylinder, the security light keep on blinking, I have not changed the key once. I decided to use my test light to check for fuse and relay they are okay, when I checked the transponder key amplifier I discovered that the is no power source at all in any of the wires. Which wire supposed to have the power source? Does it mean that my engine control module is bad or the immobilizer system itself?