CAn you shift manually in the AT mode? I read the manual, and it says if you shift frequently between D, L, 2, 3, 4, it will know figure out that you rather shift on your own, and hold the gear longer and will not shift for you. Is this true? Just curious.

 

While in D you can shift up and down, it will hold that gear for a little bit, but as you accelerate it Will take back over again.

Edit ** Didn't see he was asking about a base...

 

I think you're confusing the Sport for the Base here. I can't answer the Original Post because I haven't driven the AT in the Base Model, however, the only time I notice it 'learn' anything is while climbing a hill. I prefer to use the manual mode when driving over hills or grades because frankly I don't like the logic the car has when trying to do so.

I don't see why the AT in the Base would 'learn' that you like to shift 'manually' because frankly, the ECU only reads code. However, it might notice and keep the gear slightly longer, but S mode is different than L/2/3/4. I'm going with no to answer your question, Gordio. If you prefer to do it one way, do it that way. But, why not buy a MT if you wanted to shift that way?

 

Someone please tell me if I am wrong, but it seems awfully unlikely to me that our cars are going to "learn" a damn thing.

Much like the cassette deck in my old Tercel, a car's onboard computer does make certain adjustments based on a "logic," which is really just a bunch of preprogrammed codes which say, "if x is the situation, then y is the action to take".

Is this not how it is? As much as I love my Fit, it doesn't really seem up to a game of chess.

 

Well, it's not hard. if you shift frequently, it knows. Most people who use L, 2, 3, 4, dont' shift. They shift to climb a hill, then go back to D. if you go 2->3-->5->4, it "learns" that you want to hold the gear.

Here's the quote from the manual. P154, under "First (1)"

 

But does it learn? It will go into the gear you put it in, of course, and it does not require you to push a clutch pedal. But I don't see this as learning. Maybe it does; I certainly don't mean to seem disrespectful. I am just not convinced that it will ever change what it does, based on our shifting or driving habits. Can some expert clear this up? Thank you.

 

It learns, in that once it notices that you shift frequently it knows you rather choose your own gears, and therefore lets you hold the gear that you choose. This is my question, whether this is true. That's how I interpreted it from the manual.

The AI to do this would be much simpler than the AI shifting. heck, this AI would be to turn shifting off and easy to program.

 

Oh, OK. It sounds like we are asking the same question, then.

 

The answer is no there is no AI or learning in the ECU. We call it idle learning when we reset the ECU but basically it is like was said before "if x is the situation, then y is the action to take". The only way it could do this on a stock ECU is with a hondata board integrated into the ecu like we do with the rsx and the new civic Si but even then all we have is the ability to control the values in the ECU and program our own values based on your current list of mods. Vtec start can be adjusted, the limiter can be raised or lowered air fuel ratio can be adjusted. Even with this kind of control the ECU does not learn on its own.

Honestly if you wanted a shifting feature you should have gotten a sport but you can still shift it though its gearing but since I dont own a base would have no idea if it can hold the gear till you hit red line or not. In the sport I can hit red line and hold it even bounce it off the limmeter and it still will not automatically upshit in the sport.


Long story short I have never heard of IA technologically being used in a cars ECU but that doesn't mean has just not in a honda.

The Honda FIT does not equal the Knight Riders KIT

 

That makes complete sense to me. In the future, possibly even the very near future, all new cars will be smart. (Unlike one of my 2 dogs.) But it just ain't that time yet.

Sarah Connor: "You're from the future?"

Kyle Reese: "One POSSIBLE future!"

 

Are you sure there's no AI? How does an automatic transmission know when to shift? That when you floor the pedal, it downshifts? Doesn't AI control shifting?

"Grade Logic" is a honda AI which prevents gear hunting on hills. The AI figures out it is uphill (by comparing throttle vs acceleration), and won't upshift or downshift. When it figures out it's going downhill, it downshifts. This fixes "gear hunting".

The honda page for the CRV has a flash demo how Grade Logic works. AS i'm writing this, the site is not working (the honda site tends to shut off a lot for whatever reason). Once it's up, i'll post the link to the movie.
2007 Honda CR-V - Engineering Demos - the Official Honda Web Site

 

Fuzzy logic doesn't equal logic. If you want it to 'hold a gear longer' you have to reprogram the ECU. In which part of the manual is this? I hope you weren't reading the 'Sport Only' section about the paddle shift or S mode. Base doesn't have these.

 

I have a base model automatic, and I read that same section in the manual. I tested it out, and I was able to shift the shifter through the four different gears. It never shifted by itself when I was hitting redline. I also tested whether I could downshift, which was a gamble, because afraid it would damage the gears. But to my surprise, it did slowed down the car without having to brake, and the needle on the tachometer went up higher rpm and slowly went back down again. It never damaged any of my gears. Correct me if I'm wrong, but based on my experiment, it seems like shifting the shifter on the base is pretty much the same thing as the paddle shifters on the sport, just minus the paddle shifters.

 

i do this on my base model fit everyday. i have 55k now and no problems, the only thing is if u hit red line to many times it wont let you take it up past 6200 unless you unplug the battery for an hour or so...

 

"By upshifting and downshifting through 1, 2, D3, and D, you can operate the transmission much like a manual transmissin without a cluthch pedal."

Of course... And you could always do this with any AT, even the older ones that had only D and D2! But it has nothing to do with the car "learning"!

If you have it in 1,2, or D3, the Fit will remain in that lower gear until you physically move the AT lever out of it! You cannot rev out of it; just like an MT, it's stuck in that specific gear (and it's limits) until you move it out. And when you shift up to "D", then the auto part of the AT takes over once more and begins automatically shifting up and down for you again!

The lower drive gears in an AT are mostly for downshifting when you might need extra torque; such as on bad weather road-slick days, or perhaps when driving (or towing something) out of mud or a rut.
But you could indeed shift from the lowest gear at startup right up thru and into "D" (as the manual so cutely suggests?) but you'd be defeating the fuel saving design of the AT that way, and would probably find yourself wasting more fuel (and more driving effort) for what would probably be very little gain! -I mean, if you want an AT to shift fast, you really can't beat stomping down real hard on the gas pedal...

 

when you have the car in a diff gear than d it can shift its self if it wants. its electronically controlled. its not physically stuck in that gear!!! you can be doing 80 and drop it into first and its not gunna shift down to first its gunna go down to third or fourth.

 

Huh? You call that automatic shifting? Sheeesh buddy, if it does do that (and who's nuts enough to test it out anyway?), that's probably just a safety design to keep lunatics from damaging their AT boxes!
If you're driving sanely and normally, the lower lever-selected non "D" AT gears will remain where they are right on up to their redline limits w/o shifting out of their slots. It's what they're designed to do! When you reach a D1 limit, it's up to you to shift it on up to D2, D3; the car will not do this automatically! (Unless of course you are driving it in the standard "D" slot?!)

If all the lower D1-to-D3 lever-selected AT gears would shift themselves in and out of their ranges automatically, why would there even need to be a fully automatic "D" option? -Maybe I'm missing something crucial I don't know about ATs, but I don't understand your concepts here at all?

 

it can shift like that so if u accidentally put it in d1 or d2 it wnt just bounce of the rev limiter till you figure that u put it in the wrong gear and it will just shift up itself. and it will only shift up in the higher rpms not the lower. i shift mine from d1 to d2 to d3 to d cus i get bored lol it wasnt my choice to drive this car i hate automatics lol. but if you hit the rev limiter enough in one gear the pcm remembers that and wont let it go up that high and will shift at 6300 rpm.