My main relay is receiving no power at all from the ecu. I don’t know how to test that with the ecu. I do have a multimeter. Since the main relay is getting now power the fuel pump is not turning on but my relay and my pump both work and yes I tested them. When I turn the key the heater relay clicks loudly. All the grounds are good except the thermostat ground has no continuity

Update: the thermostat housing now has continuity with the grounds for ecu. Still no progress.

 

I replaced the ignition switch and everything worked perfectly. I went to check to see if the fuel pump was pumping gas so I disconnected the negative terminal and put it back after troubleshooting and the problem came back. But this time the ignition switch is perfectly okay. There is continuity for each turn. All fuses are good also. Any help is appreciated. I like to note that only one wire has constant power. Another wire only has 6v unlike the constant has 12v.

 

Possibly the ECU. Is the check engine coming on and staying solid as soon as you put the key in ACC? Normal operation is CE light on then off along with the main clicking and fuel pump priming

 

When I plug my ecu in to another civic it starts right up. So I don’t believe it’s the ecu. The problem is I can’t get my pgfmi to even turn on so I can’t tell if it goes off when it primes

Well now when I turn it to crank the engine light stays on

 

I have now found out my ACG (s) fuse keeps blowing!

There was a short in my fuel pump wiring and I’m now soldering and fixing it now!