Hello all, Have a obd-1 vtec ecu that is getting a solid ground. (not a pulse) from pin a2 (to inj 4) have a code 16, and 14. Is their any information anyone can lead me to how to repair or replace the injector driver? Or any other parts in the ecu causing this problem? Thanks guys. I used to the search button and couldnt find crap. Hopfully a honda tech can help me out..

 

Its been a while, but it's components QM1-3 that are the actual transistors. It could also be a bad diode, but unlikely. Trace the pin back to one of those 3 black components, replace with one from another ecu, and it should work. Otherwise it's further back in the circuit, meaning the processing unit - which is more work than it's worth. You won't be able to find these parts new FYI.