bdehn

All - appreciate some guidance here.. Drove Civic to work with no issues.. went to leave after work and crank with no start. Distributor had been replaced a year ago and with no spark condition swapped it again as it was under warranty.. didn't help.. I've checked crank fluctuation sensor and it checks okay. I have power to coil but not seeing it collapse to produce spark. What wire(s) going to distributor harness is from the ECM? I checked voltage on green/yellow wire and nothing.. I'm suspecting the ECM as everything else seems to be okay.. I did hook up a scanner and can talk to the ECM but no codes..