My car died wont start no check engine light or air bag light when you turn the key on

What is your question?

Car was idling bad then a day later dies won't start replaced crankshaft position sensor and pcm no check engine light when you turn the key on or airbag light , and I have no 5 volt reference voltage on any of my sensors

What makes this problem better or worse?

Nothing

How long has your 2003 Toyota Matrix had this problem?

Trying to figure it out for 2 weeks