smanders

iTrader: (4)

I somehow bricked my ECU last night. I was flashing my ECU tweaking some numbers which had been done a bunch of times and all of a sudden I heard the USB unplug sound right during the flash and then the USB plug in sound about a second later, not good. After that the EcuFlash program just sat at around 50% complete. I let it sit for several minutes....praying....then still nothing. I had to manually cancel the flash update in EcuFlash. Now the car will not start.

So then I tried http://openecu.org/index.php?title=EvoXRecovery this morning. I wire-wrapped pins 8 and 12 to short them together. I did a continuity test with my multimeter to make sure nothing else was shorted and that pins 8 and 12 were shorted. All looked good. I tried the flash recovery method, but still nothing.

Someone mentioned that this method may only work when the ECU is completely disconnected from the car. I can try that too, if that's the case.

Please help....I have a trip to the "Tail of the Dragon" this Thursday and the timing of this just couldn't be any worse.

Thanks,
smanders

travman

iTrader: (26)

Did you try reflashing again?

I have had that happen and I just closed ecuflash, re-opened and flashed again and all was well....

smanders

iTrader: (4)

Thanks for the reply. I did try that as soon as it happened. I get an immidiate error stating that is unable to communicate and then it closes the interface.

travman

iTrader: (26)

If you have another car hook jumper cables to the X battery and try flashing with the other car applying juice to the battery...

If the battery voltage drops to low it wont allow it to flash - usually when the car sits all night or cold out, etc. I always flash after the car has been fully warmed to keep that from happening.

smanders

iTrader: (4)

The car was actually fully warmed up when the first flash went bad. The car can easily be cranked so I believe the voltages and power output should be fine.

evonut270

this is not a 1 off iv heard of a few like this now

travman

iTrader: (26)

assumptions dont get the problems solved but trying things does even if it doesn't make sense at the time.

smanders

iTrader: (4)

Have you heard about any resolutions?

Professionally, I'm an embedded device developer so I'm hoping I can resolve this myself as long as I don't need any crazy equipment.

smanders

iTrader: (4)

Agreed, I'm definitely going to give this a try as I'm open to anything at this point. The car is in a parking lot about 2 miles away from my house. I'm going to head back over it tonight with a new bag of tricks and fingers crossed. I am also going to just pull the negative terminal from the battery to fully reset the ECU.

Chris Moore

I had an error occur once, I know this sounds like a really high tech way but...I just tried reflashing it 3 or 4 times and on the last time it went just fine.

Also, since your usb cable became unplugged to the computer for a second, are you sure the cable and usb port are in good condition? Can you borrow another cable to try?

evonut270

i know that if the read/write process freezes then ecuflash must not be closed. im sure Tephra or Colby will be able to help

UT_EvoX

Answered in your other thread: https://www.evolutionm.net/forums/ev...-ecuflash.html

tephra

iTrader: (6)

OK

1) When a flash craps out half way through:
a) DO NOT TURN THE CAR OFF
b) YOU CAN RESTART THE LAPTOP
c) TRY REFLASHING

2) If you did a) above then (until Colby fixes the inbuilt recovery mode) you need to bench your ECU - Basically:

Use http://www.roadraceengineering.com/e...-ecuwiring.htm as a reference

Looks like you need to hook up:

Power/Grounds:
73 = +12v?
81 = ground
82 = +12v?
93 = ground
104 = +12v?
Just ensure the "power pins" have +12v and the continutity between the ground pins and chassis is 0ohms:

To OBD connector:
90 = CANH
91 = CANL
80 = Kline
103 = pin 8 or 12 ???

If in doubt I would start by measuring the voltage output on the pins you will be "emulating". And also measuring the continuity between the OBD and ECU harness for the OBD connections.

A friend has done this and was able to recover their ECU

boostin20

Good info tephra, thanks.

tobz

iTrader: (15)

Any more info would be great. I have tried to reconnect the #8 line to the #12 and reflash in alternative mode but i keep coming up with this response.

[15:47:01.318] J2534 API Version: 04.04
[15:47:01.318] J2534 DLL Version: 0.50.2598 Jun 26 2009 15:02:29
[15:47:01.318] Device Firmware Version: 1.07.2597
[15:47:04.099] sending init sequence 1 (0001)
[15:47:07.384] sending init sequence 1 (0003)
[15:47:10.662] sending init sequence 1 (FFFF)
[15:47:13.946] sending init sequence 1 (F0F0)
[15:47:16.665] no response to any known code
[15:47:16.667] interface close

please help. Thanks