Super epic. Great job Frank and Dai

Yup, this is exactly how I understood the schematic! Thanks for the post!:tup:

Damnit, i just paid for my bypass plug last night. I thought someone had tried the fuse removal first, as if seems like the easiest thing to do.

they may have but this fuse box is hidden next to the battery and does not look like a fuse box b/c it is about 4in x 6in.

Cool deal thanks and reps to you and my lovely DAI.....

Looks like I've got some work to do. :tup: +rep

god damn it i sent the money for the harness last week :facepalm:

good find though guys :tup:

Cool.

Looking at the diagram, the only thing I noticed regarding the cut the wire vs pull the fuse approach is the point highlighted below.

https://lh3.googleusercontent.com/-J...4327pm-BDL.png

With the pull the fuse method the point highlighted with the blue arrow wont be powered going in to the CPU. I'm not saying it makes any difference, but when cutting the brown wire it is breaking the circuit further downstream and therefore that point will continue to be fed with power, where as removing the fuse it will not. Again not saying it makes any difference but would think that point serves some purpose, maybe just an error code?

No codes,no problems,the car has been running,driving,parked,locked,unlocked and everything we could think off no CEL it just acts like a normal 370 but with no steering lock.And that location marked with the blue arrow @ the cpu is for the steering lock so it doesn't come in to play.

But you agree that the blue arrow is an input to the CPU and it won't be hot without the fuse? It wouldn't be an indication of the steering lock status because it would always be hot as long as the relay was activated which the CPU already knows because it triggers the relay via the earth/ground feed above the blue arrow and the status of the lock is communicated by the other wires going from the steering lock to the CPU. As I said it is great that there appears to be no down sides, but it is also unusual for a circuit to include a feed like that if it isn't used. It could simply be for the CPU to know that the activation of the relay was successful, but without seeing the inside of the CPU or having access to the code there would be no way of knowing for sure.

I just bought my 09 370Z (assuming I have a failure prone lock)
Thanks a TON I was sweating this impending failure!!!

Actually I don't see the blue arrow as a input from the S/L ,but as a CPU output to the S/L thats why when the fuse is removed the power is taken from that wire(fuse 48) and then no input is given to the S/L via that wire.And again there have been no issue and no codes.

Please remember this is the Tech Section and not the General Section so STAY ON TOPIC!

Back On Topic!


Like it has been said Good find :tup:

I don't see it as either. It is an input from the relay to the CPU. The relay is activated by the wire above the blue arrow, completing the circuit and energizing the coil in the relay. 12V then flows from the fuse through the relay and in to the CPU and the S/L. 12V is fed to both the CPU and the S/L.