Well we just spent 4 + hours checking power/continuity paths,connections, & everything checks out. So, I don t have a ignition coil pack trigger pulse @ any of the coil packs. Coil packs are powered up,grounds are good. Pulse wire continuity path from ecm to each coil pack are good. Power,ground & continuity paths from the ecm to & from the cam sensor & crank sensors are good. Original cam & crank sensors ohms check out. My question is (2005 year truck) what is the separate small black box mounted under the battery? A Nissan tech said it is a "spark trigger module" & said they have R/R quite a few on them. The OEM parts manual labels it as a "LPG injector driver". Which is it,a ignition controller, a fuel injector controller, or a combination controller?
The ecm isn t available but there is a updated ecm kit? available for a about $1100. I want to R/R that supposed spark trigger mod. but I didn't see any wires on it that were related to spark. I opened it up & no smell & looked good for what ever thats worth.
I frickin tell you this couldn t of happened @ a worse time.