Is it possible that on different cars the pink wire you show going to the fuse might be getting the plus side voltage through a connection at the ECM? I ask this because I definitely found continuity with the key off from the pink wire at the injector and what I believe to be the same pink wire at a plug on the ECM.
I understand the wiring diagram you sent, however, I do get 12V. Across the two injector terminals with the key on - and this is for all the injectors. As far as pulse coming from the ECM grounding and ungrounding one conductor - my voltmeter showed pulsations between battery plus and injector black/white with the engine running. These pulsations showed only on the working injectors and not the silent one. What makes this even more puzzling is that this morning I started the car and knew immediately that all 6 cylinders were firing. It has been intermittant before but it's been quite a while. Maybe it's nothing more than a less than solid connection at one of the ECM plugs? I have to take a 1400 mile trip with this vehicle in three weeks so I really want to solve this.
Monday, March 7th, 2011 AT 7:47 PM