Most ECU's that have EPROMs are socketed, that way an updated eprom can be
easily installed. The bulk cost for these type of eproms is usually very
low (maybe $5 at most). Like Bob said, if you can get a new version of the
eprom, and it is a fairly popular EPROM, and somebody has an eprom burner,
you can make copies.
Many auto makers (GM comes to mind) have gotten away from eproms in favor
of flash memory (or flashable proms, perhaps EEPROMS), that allow
technicians at the dealer to load up new code by plugging into the service
port for the computer. If this is how the GTS ECM was done, then this
could greatly complicate the process, since you would need a special device
to flash the computer. Hyperchip makes a number of special purpose devices
that allow you to do this for GM cars and trucks, but they limit you to ONE
vehicle. It can tune a number of parameters independantly. They usually
run about $330 on the low end.
I would think a GTS savy mechanic or parts guy could easily look this up.
Also, does the microfiche say anything about the ECU ?
-----Original Message-----
From: Burton, Bob [mailto:[EMAIL PROTECTED]]
Sent: Monday, June 18, 2001 11:10 AM
To: [EMAIL PROTECTED]
Subject: Re: New 96 ECU EPROM
We have a repair facility here that does component level repair. Since I've
never tried to open the case on the ECU don't know how hard that is but if
it's not difficult and the circuit board can be accessed, I can easily
replace the eprom in the ECU. Since our Dutch friend says they replaced the
eprom, sounds like it can be done to me, otherwise there would be yet
another ECU. Eproms depending on type are not very expensive, getting a
master eprom or the code to put on the eprom is obviously the first step. No
master eprom or new "96" eprom code, then forget it. Bob B. (hoping there
actually is a new eprom and someone can get it)
-----Original Message-----
From: Steve Baglien [mailto:[EMAIL PROTECTED]]
Sent: Monday, June 18, 2001 10:30 AM
To: [EMAIL PROTECTED]
Subject: Re: New 96 ECU EPROM
But the EPROM's are soddered on and sealed in to the ECU,
right? You'd have to replace the entire ECU - which is big
bucks.
"Burton, Bob" wrote:
>
> If this is true and anyone over the pond can get their hands on one (or
two)
> of these new eproms, like I said before, most likely I can duplicate them.
> If anyone checks into this please keep me posted. I'm sure Yamaha USA will
> not acknowledge this eproms existence.
> Thanks...Bob B.
> ps Given the Eprom chip number (type) and a binary or hex file I can also
> create the eproms as well.
>
> -----Original Message-----
> From: Erwin Donkers [mailto:[EMAIL PROTECTED]]
> Sent: Monday, June 18, 2001 6:01 AM
> To: [EMAIL PROTECTED]
> Subject: Re: New 96 ECU EPROM
>
> <snip>
> Translation of second part is same as in the posting:
>
> If you drive with 3500rpm in second gear, the engine acts sometimes as if
it
> stalls for a moment.
> This stays this way until you increase the throttle.
> It seems that YAMAHA has a new EPROM (software in an IC) which has to be
> replaced in the blackbox for the ignition/injection. The problem was
solved
> with the new EPROM.....
> At the MotorRAI at Amsterdam he talked to the people of YAMAHA Netherlands
> were he addressed the problem. YAMAHA would look in to it. After a while
> YAMAHA replaced this EPROM with the new one (if they replaced the complete
> ECU I don't know, I think so, and send the old one back to the factory for
> update). Problem solved.
>
> Maybe its possible for your local YAMAHA dealer to contact YAMAHA
> Netherlands for further information, and if it's available in you country.
>
> YAMAHA MOTOR NL. B.V.
> KOOLHOVENLAAN 101
> 1119 NC SCHIPHOL - RIJK
> Tel: 020-6546000
> Fax: 020-6546739
>
> Greetz Erwin
