-Had a problem connecting to ecu so I purchased a new tactrix cable.
-Was able to connect to ecu with new tactrix and pull current rom.
-Car sat for 4 days, went to connect and load new rom and recieved no response to any known code.
-I have tried everything to boosting voltage, new laptop, everything that has ever been suggested.
-I pulled the ecu and checked voltage into the plugs and it reads 0.

I checked every fuse in the car. Where am I losing voltage and why would it have happened out of nowhere?

 

Does the car run?

 

Dead battery?

 

The car has yet be started since the rebuild. The car will not run on the original tune with some of the changes that have been made.

 

It is a brand new battery and I have even tried it on the charger. I have tried just about everything suggested in the myriad of threads on the forum. I am wondering if there is some fuse or relay I am am missing. Possible dead ECU? I do not understand how all of a sudden I am showing 0v to any of the power wires into the ECU.

 

When exactly should I be reading voltage at the ECU?

 

There is a fuse for the ecu... Make sure when you turn the ign on, that the SES/MIL comes on. If you don't see that light, you have a blown fuse.

 

The SES light does indeed come on. For some reason the ECU is not communicating with either ECUflash or even EVOscan now. As I stated before when I check the voltage to the ECU I get nothing. I am at a loss.

 

Has anyone dealt with anything of the sort?

 

you need a factory service manual and you need to go thru the diagnostic flow charts to diagnose it. could be a relay, could be something else. you can buy the manuals off ebay and download them the same day.