Just joined this forum because of a Nissan Versa SL, its a 2008, I am trying to help a friend so far she has been run around and no one fixed the problem, ok this is going to get interesting, I am no Nissan specialist by any means but i know a bit about cars.
So here goes, lol, by the way im doing this for free, shes a nice lady and i been trying to help her, the car was towed to my house, she said she stopped at her sisters and turned the key to shut the car off and nothing, it stayed running, eventually she said someone got it to shut off but not by the key. So i get the car and found my local junk yard guy had one, so i grabbed a Steering column as the steering wheel lock didnt work and the key and tumbler were very loose, then i bought a new ignition switch and swapped it, didnt fix it, so i grabbed a BCU and a IPDM along with the ECM from the donor car, swapped them out, noticed an factory remote start was installed so i removed it and properly soldered all back in place, still no change, i removed and cleaned all grounds under the hood, then started testing the dash harness, I contacted someone who works for Nissan he had me go through a couple things then said dash harness has a crossed wire. I removed and inspected the dash harness ran an ohm meter were i could found nothing, i removed all tape and covering and visually inspected the entire thing.
as soon as i pout on the negative battery cable the entire dash lights up and the ECM along with everything is powered, after pulling every single fuse and replay the only fuse that shut it down was fuse 27, audio/ H-Phone, with that fuse removed the BCU was not powered up, the car would start and shut off but all BCU functions were disabled, so during tracing wires I found the harness plug on the passenger side kick panel sends power out through a blue wire on one side of the b=lug and power comes back through a green wire which turns into a white wire heading to the BCU it is also connected by a small plug which gives them all power, so, the wiring says that is also the battery backup for the Radio, it heads back to the sub woofer and blue tooth unit. I ran an OHMS test on that circuit, with the battery cables removed i attached my ohm meter to the pos cable and neg cable, with that plug by the passenger kick panel plugs in i get 140 ohms, with it unplugged i get 51,
OK long post i know but i been through hell so far, she needs her car and is a single mom with a disabled kid, i just feel like i have to fix this, I tested with plug removed i get about 70 ohms between the red wires heading to back of car and the green wire returning or vice versa lol
ANYONE ever heard of anything like this?