you're missing the point. i was stating the example that unlike the engine component parameters, steering locks have nothing to do with the engine performance. there's nothing for the ecu to 'learn.' it's only a pass/fail system for the steering lock.

im not here to make an argument. i am just here monitoring everyone's progress before i decide do do anything about mine. :p

carry on.

AWESOME safety tip. Thanks!!

^ you're welcome :p

Also, if anyone cares, I hooked up the UpRev cable to the car and checked for error codes and none were reported or logged.... all good.

As a side note, I wonder if UpRev would have the ability to control this Steering Lock circuit from within the Osiris software? You can disable a lot of other features like Auto Power Windows etc.... currently it cannot adjust Steering Lock settings but maybe an update could....

When you pulled the codes did you check just ECU or did you check the Body control module.

The BCM on our cars seems to be split up into different layers it seems, because you can't control every BCM function for some reason. The 370Z's ECU in general is definitely more difficult than the 350Z's was, the 350Z certainly had more tinkering to be done with UpRev.

This is not "learning", this is recovery from an error (timeout) condition.

Look, I suggest we agree to disagree on this issue. The only reason that I brought up the whole "ECU learning" thing is simply that I don't think there's any reason to recommend that anyone reset the ECU to try and get it to "learn" that the steering wheel lock is disabled.

The main thing is you and Baer383 did excellent work, and did us all a big favor, in discovering that removing the fuse will eliminate the steering wheel lock failure - it doesn't cost anything to implement, and can be easily reversed. The only side effect appears to be a once-in-a-while delay in starting the car. It's no big deal.

Peace.

ECU and BCM

I agree that the BCM is more of a 'Black Box' than ever. Still, there may be more access than we realize with the right software....

100% correct. The ECU encounters conditions and reacts to those conditions. It's all preprogrammed though.

There's a ton of guessing that is masquerading as fact in this thread. It's the reason i've stayed out of this thread but to correct the misread on the wiring schematic early on. The schematic shows that removing the fuse will disable the steering lock. What we can't be sure of is what the ECU does with that info, not from the schematic alone anyway. Obviously whatever condition the ECU sees doesn't prevent you from starting your car and driving off. My guess (with circuit design and repair experience) is that this mod is fine.

There's no way the ecu is "learning" here.


I doubt Nissan invested the man-hours necessary to adapt to things like this when something like an automatic timeout would do (which is already a native function in CANBUS)

Even just having a flipped bit for "check steering lock y/n" makes no sense, and certaint doesn't appear to be there.

Also worth keeping in mind that the "learning" being referred to is a very loose use of the term.

When it "learns" to set fuel trims, it's just looking up values in a table...you'd need to have predefined behaviors for "steering lock removed" that are stored in nonvolatile memory...and then account for what happens if it is reinstalled. Checking every time it is started accounts for that.

The ecu doesn't actually do any learning, which is an important distinction.



Oh, you're talking about draining volts? I see now.

Can we all just settle on it works with no issues.

:iagree:

Its a great fix but much too much bickering has insued.

Cutting down on comments like this:



To guys with 40 years of experience with electronics (and the right answer) will help.

I had a good poop this morning.

Sounds like a pretty crappy situation... :D

Thanks for contributing.:hello: