My 2001 Mazda Protege won't start. There's no power to the spark plugs. I replaced the camshaft position sensor, the crankshaft sensor, and the ignition coils, but it still won't start. The fuel pump is also new, but it's not activating. I tested the fuel pump outside the car and it works fine. Can anyone help me figure out why there's no spark and no pulse to the injectors?

 

Welcome to the forum

 

If you have a miltimeter measure the voltage supply and earth at both the crank and can sensors. Usually 5 volts. Then crank the engine and measure the output pulses at each sensor. Unfortunatley I don't have a wiring diagram to indicate wiring colours.
Your car should be OBD2 so you should scan it for codes then look at live data.

 

The problem is not the sensors or the coils, but rather a global control failure: ECU power supply, relays, grounds or immobilizer.