I have a code on my 2000 maxima and after YouTubing and digging around, I think I figured it out. Mostly. I don’t think it’s a bad coil. Every video begins with “check to make sure you have voltage on the wire going to the coil.” And, well, I don’t. I have voltage on all the other wires/coils but it looks like bank 01 on the middle coil (coil 2?) appears to not be getting a voltage. I can only conclude that there is a break in the wire somewhere. From what I understand, this wire is simply connected to 12v and nothing to special going on. I believe it goes back to the fuse box. I believe there is no concern about “other” failures aside from the wire itself or possibly corrosion on a connector. And, I’m pretty comfortable working with 12v systems.
Where do I begin? I pulled back the conduit and as far as I can tell, there are no splices in the wire at that end. It appears to go straight into the harness. I also believe it is not an issue with the harness on that end. But then the wire disappears down behind things and I really cannot figure out where it goes. I dug around in the manual and the best thing I can find is a reference to “F5: GY/3” in the wiring diagrams but I really have no idea where that is. I’m also not certain if there are any connections between A → B. I think it is going through multiple harnesses possibly. And I am uncertain where the end connection point is. I would consider just running a new wire without running all new the entire way if I could figure out where the other end is. But, either way, I want to check what the other end plugs into. Is this a relay? A fuse? Where is it? Is it crazy to just run a whole new wire? Or should I be “doing it properly” and finding every possible harness between A and B and test/fix it there? And, is there a clear diagram showing me all the harnesses it may stop at and where they are under the hood so I’m not chasing this wire through the entire engine compartment?