I have a 97 civic that suddenly died on road. Have no spark at plugs but do have a yellow spark a 1/4 inch away with ground wire at coil output . Have current at 2 wires to coil from igniter no current at yellow/gr. Wire. No blue wire connected to igniter. Fuses all good.No cel ever came on.

Replace Ignition Control Module (ICM) and coil:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-4.html#post265896

Very problematic components that should be replaced every 120,000 miles or 10 years, whichever comes first. Bench testing these components is not reliable at all.