1997 toy 4-runner no start

I'm working on a 97 4-runner 2.7 liter that has an intermittent no start problem. I have spark and fuel pressure but no injector pulse. I think I have narrowed it down to the ecm but before I dish out big bucks for one it would be nice to have some other ideas. I have also checked for powers and grounds at the ecm, all ok. Also the four wire connector at coil, the black/yellow wire has a pulse (this is what tells the ecm to trigger the injector) . Any idea???????

Moved to the 4Runner forum