Toyota's electronic throttle, and..
in [Technical]
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From: chuckcar on 25 Mar 2010 22:00 =?iso-2022-jp?q?Hachiroku_=1B$B%O%A%m%=2F=1B=28B?= <Trueno(a)e86.GTS> wrote in news:hoh2oo$4e7$3(a)news.eternal-september.org: > On Fri, 26 Mar 2010 01:16:19 +0000, chuckcar wrote: > >> Tegger <invalid(a)invalid.inv> wrote in >> news:Xns9D46D48D312C4tegger(a)208.90.168.18: >> >>> ...just why Sudden Unintended Acceleration is virtually impossible. >>> >>> <http://www.popularmechanics.com/automotive/how_to/4347704.html> >>> >>> The author does not mention it, but the NHTSA closely regulates the >>> design of the electronic throttle and its firmware. It is, by >>> design, not possible to "hack" into the firmware in order to modify >>> or disable it. >>> >> No. You'd have to have to have the pin that enables erasing/rewriting >> of the EEPROM/EAPROM IC used and the hardware (electric and >> electronic) to support it to be able to do it. One *could* however >> physically take the ROM out and completely rewrite it, if you could >> rebuild the module you destroy by doing this. That is entirely >> possible and anyone could do it with enough technical knowledge, >> ability and the right pieces. Anyone can buy a PROM programmer. >> >> That's all beyond the scope of such an article of course, but it >> shows what is involved in doing it sucessfully. >> >> I'd bet good money that all race cars have a connector for just this >> purpose. > > I think in Indycar (or CART) they had the ability to do this while the > race was in progress! That has since been ruled out IIRC. > > Of course it wasn't reprogramming the EEPROM on the fly, but changing > the parameters in RAM. > Yes, they recently banned something similar in Formula 1. The teams were changing the driving/handling characteristics with a two way radio link. Telemetry going one way and that the other. They finally ended it a couple years back. They had Microsoft create a standard ECU for all teams. Can *you* say: "my visor has gone completely blue and is covered with unreadable numbers and letters?<g> -- (setq (chuck nil) car(chuck) )
From: cuhulin on 25 Mar 2010 21:58 Power Lines Cited As Possible Cause of Runaway Toyotas. http://www.libertypost.org/cgi-bin/readart.?ArtNum=286344 We all depend on power lines in some form or another.If no power lines, no Toyotas, or Nissans, Fords, Government Motors,,,,, Those dang pesky power lines! cuhulin
From: Tegger on 25 Mar 2010 22:00 Ed White <ce.white3(a)gmail.com> wrote in news:bb31d261-4a17-4139-9db8-0d14c4b8d873(a)r27g2000yqn.googlegroups.com: > On Mar 25, 8:53�pm, Tegger <inva...(a)invalid.inv> wrote: >> ...just why Sudden Unintended Acceleration is virtually impossible. >> >> <http://www.popularmechanics.com/automotive/how_to/4347704.html> >> >> The author does not mention it, but the NHTSA closely regulates the >> design of the electronic throttle and its firmware. It is, by design, >> not possible to "hack" into the firmware in order to modify or >> disable it. >> >> -- >> Tegger > > The article was very good and I believe the conclusions are correct > (i.e., it is not the electronics). I do wonder about your statement. > Anything to back it up? A Toyota MDT told me this. He and his cohorts have received extensive factory training on the electronic throttle as part of the normal dealership-tech training. And they've had some very intensive additions to that training on account of the recent controversies > Exactly how does NHTSA closely regulate the design? Couldn't tell you. I can only relate what I've been told by my /very/ reliable source: The electronic-throttle firmware is NOT modifiable; its circuitry is independent of anything else that might control the engine. -- Tegger
From: cuhulin on 25 Mar 2010 22:51 For myself, and most people, I assume, a car (in my case, my van) is a vehicle/a way/a means for getting from point A to point B, C, wherever.Do most people when they buy a new car/truck/van really ''dig'' all of those new fangled complex computerized things which are built into their vehicles, like the tv commercials show on tv? Think of the money that can be saved, the much less down time of their vehicles in the repair shops.The convenience of owning a much more simpler and dependable vehicle that is much more reliable. cuhulin
From: Hachiroku ハチロク on 25 Mar 2010 23:27
On Fri, 26 Mar 2010 02:00:14 +0000, chuckcar wrote: > They finally ended it a couple > years back. They had Microsoft create a standard ECU for all teams. Wait for it...... > > Can *you* say: "my visor has gone completely blue and is covered with > unreadable numbers and letters?<g> ROFLMGDAO!!! YES!!!!!!!!!!!!!! |