Is my ecu bad? no spark no dome lights fuel pump dont kick on already changed main relay

it all started with no spark in the distributor. i ended up just buying a new one but still no spark. so i did research and i noticed that my check engine light does not turn off after a couple seconds when i turn on the ignition and my dome lights wont work, fuel pump not kicking on and the windows arent working either. i changed the main relay so could it be my ecu?? i desperately need to find out whats wrong because i need my car i been outta work ever since please help i gotta fix it???

 

Do you have a good electrical diagram? See if you can find a common circuit, which affects everything that isnt working correctly. Have you checked your grounds? Especially the ground from the engine block? What about ignition switch? Gremlins are difficult to find, but you have to be thorough and patient. Do you have any family members or friends who are good with automotive electrical systems?

 

ive double and triple checked all grounds the ignition is good its really got me stumped. but that still dont explain the check engine light. would the ecu cause these problems?

 

Do you ave a good electrical diagram? Is this a stock engine? Has it been replaced or heavily modified?

 

it is a stock 2.2 vtec automatic. the only modification is the air intake.