RomRaider

Thanks for the reply!

My DLP-USB232M-G also uses the ft232bm chip, and I've got a ne555n as well. I also switched to a nice power supply that gives a quality 12V.

I picked up some LEDs to monitor the USB tx/rx, and found something suspicious. The data sheet lists a +5V constant with a low signal for tx/rx on each line. I wired up the LEDs properly, but only the RXLED output is working. The TXLED output is strange. It appears to be sitting at some positive voltage, but even a slight draw pushes it to zero. When probing it with the scope, I can catch a 'tail' of the voltage dropping down to zero.

So, given a good ecu, good psu, proper wiring, etc. looks like I need a new FTDI module.

To be sure, I also checked the USB, and it is holding steady during all of this so it really looks like a bad FTDI module.

I'll donate money to help persuade/motivate you to move forward with the ECU recovery. I REALLY need a dumbed down howto document with maybe a sprinkle of basic electronics theory as its been a looong time since I played with a bread board. Glad to see that you might have pinpointed your issues to a faulty FTDI chip!

It looks like faulty FTDI is not a primary reason. The ECU processor chip is not powered properly. That may cause FTDI being overloaded and probably broken.

In order to prevent the next chip to be broken I may recommend to put resistors of about 1 kOm bitween ECU_RX- FTDI_TX and ECU_TX-FTDI_RX.

Yep, I was just testing the actual cpu pins, only getting ~3v at the Vcc, and no readings from the mode pins or portVcc pins.

Still trying to figure out a way to track down the voltage stabilizer. Next step will be plugging into the car and checking the pins to rule out my power supply or wiring.

hi, sorry for my bad english))
i try flash my brick ECU from Forester EU 2004
i`m use FTDI232BM chip and 555 timer
use 12v power for ECU, pin POS - B5,6, NEG - B1,4, my ECU 'eating' ~ 370 mA

point p407 on Ecu have 150 mHz

but Ecu Flash not write my Ecu
i attached log:
[17:46:00.127] EcuFlash Version 1.41.2483
[17:46:00.127] OS Version Windows XP
[17:46:00.127] Qt Version 4.4.0
[17:46:00.127] 26 memory models read.
[17:46:00.127] scanning for metadata models in C:/Program Files/OpenECU/EcuFlash/rommetadata
[17:46:00.283] 342 ROM metadata models scanned.
[17:46:00.283] checksum module "subarudbw" loaded.
[17:46:00.283] checksum module "mitsucan" loaded.
[17:46:00.283] flashing tool "wrx02" loaded.
[17:46:00.283] flashing tool "wrx04" loaded.
[17:46:00.283] flashing tool "sti04" loaded.
[17:46:00.283] flashing tool "sti05" loaded.
[17:46:00.283] flashing tool "mitsukernel" loaded.
[17:46:00.283] flashing tool "mitsukernelocp" loaded.
[17:46:00.283] flashing tool "mitsubootloader" loaded.
[17:46:00.283] flashing tool "shbootmode" loaded.
[17:46:00.283] flashing tool "shaudmode" loaded.
[17:46:00.283] flashing tool "subarucan" loaded.
[17:46:00.283] flashing tool "mitsucan" loaded.
[17:46:02.877] A2WC420F (237 tables) inheriting 32BITBASE (662 tables)
[17:46:02.923] 524288 byte image read.
[17:46:03.892] Using interface USB <-> Serial
[17:46:04.970] sending bit rate sync bytes...
[17:46:06.502] no bit rate adjust response
[17:46:06.502] interface close
[17:46:36.814] Using interface USB <-> Serial
[17:46:37.970] sending bit rate sync bytes...
[17:46:38.080] received bit rate adjust response
sending boot command
[17:46:38.611] received bit rate adjust response
sending boot command
[17:46:39.127] received bit rate adjust response
sending boot command
[17:46:39.642] received bit rate adjust response
sending boot command
[17:46:40.173] received bit rate adjust response
sending boot command
[17:46:40.689] received bit rate adjust response
sending boot command
[17:46:41.220] received bit rate adjust response
sending boot command
[17:46:41.736] received bit rate adjust response
sending boot command
[17:46:42.252] received bit rate adjust response
sending boot command
[17:46:42.783] received bit rate adjust response
sending boot command
[17:46:43.298] received bit rate adjust response
sending boot command
[17:46:43.814] received bit rate adjust response
sending boot command
[17:46:44.345] received bit rate adjust response
sending boot command
[17:46:44.861] received bit rate adjust response
sending boot command
[17:46:45.392] received bit rate adjust response
sending boot command
[17:46:45.908] received bit rate adjust response
sending boot command
[17:46:46.423] received bit rate adjust response
sending boot command
[17:46:46.955] received bit rate adjust response
sending boot command
[17:46:47.470] received bit rate adjust response
sending boot command
[17:46:47.986] received bit rate adjust response
sending boot command
[17:46:48.517] received bit rate adjust response
sending boot command
[17:46:49.033] received bit rate adjust response
sending boot command
[17:46:49.548] received bit rate adjust response
sending boot command
[17:46:50.080] received bit rate adjust response
sending boot command
[17:46:50.595] received bit rate adjust response
sending boot command
[17:46:51.111] received bit rate adjust response
sending boot command
[17:46:51.642] received bit rate adjust response
sending boot command
[17:46:52.158] received bit rate adjust response
sending boot command

please, help me!!!

maybe i`m use wrong power pin for my Ecu? i find power pin in Subaru technikal documentation (like 2003-2004 Subaru Forester Service manual - Engine (H4DOTC) - Engine Diagnostics - MSA5T0722A162086 ECM IO signal.pdf)

maybe my Ecu dosnt go into boot mode, i connect to GND point number P413

thanks

Hi, i think i'm near to suceed to reflash my STIX ecu. But don't know what's wrong.
here's my log if one can help?

It's with a 150Hz freq !! Is the baud rate too high?