can't read ECU, need help
 

I've used ecuflash for a month and got some good experience until my last map. I'm not sure what mistake I did cuz I can't connect to the ECU anymore, the log said "(FFFF) unknown code" which I can't read and write to the ECU. Someone knows how to fix it?please help

Thx

PS 1. my car is Evo 9, JDM
2. evoscan is still working.
3. My program n cable can work with other evo.

ecu got locked? how many times have you flashed it?

less than 10 times

Uninstall and reinstall ECUFLASH.

Reflash your base stock map back on it.

I reinstalled it but still can't flash the base map to ECU, the log said "unlnown code".

I had the same thing happen. Usually you can only hear one click when you start to read the ecu. But I kept getting 2 clicks then it throws the unknown code. I tried running the unlocker in the back ground but still the same issue. Then after the 4th or 5th try it just worked. ????

Unistall, Restart the machine, Reinstall, Then insert cable and try.

yes, the same problem, hopefully will work again as you.:beer:



will try it, thx {thumbup}

Hi

Evo Ix s are known to have a problem with low battery voltage causing a failure to connect. Also if the Tactrix cable has some loose pins this will cause the same problem.

MB

tried 2 times and the result are the same.

the battery is still OK, 13.93V, and the tactrix cable is OK too. I will bring mycar to Mitsubishi dealer for checking the two conector, OBD and the small one.

thx,anyway

That looks like quite a high battery voltage. Did you measure that with the engine running?

Did the last map you flashed come from a tuner or another source? Have you tried the ECU unlocker program?

MB

No, the last flashed was fq map. BTW how do I get the ECU unlocker programme?
Thx

Did you flash the whole ROM ( which is a bad idea ) or just the maps?

ECU unlocker at www.aktivematrix.com

MB

the whole ROM, I asked my bro to copy only the map but he did flash the whole.