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Post Info TOPIC: Can't Connect to my ECU... 37H00 GSX R 600 K9


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Can't Connect to my ECU... 37H00 GSX R 600 K9


Hi Guys,

I have troubles connecting to my Denso 37H00 from my 600K9 on the bench..

I've tried 3 different USB to TTL converter by now :/

i used following Pins:

PIN 7 -> +5V (USB Power)
PIN 12 -> VCC 12V
PIN 15 -> TX
PIN 16 -> RX
PIN 17-> Reset
PIN 29 -> FWE (5V with 1k Ohm resistor)
PIN 35&36 -> GND

I installed ECUEditor and the COM Port Drivers

Then i plugged in the FTDI USB adapter (already connected to the ECU Pins), swiched on 12V and 5V Power supply for the ECU, then Connected the FWE pin to 5V, then Grounded Reset for two seconds and hoped for connection but nothing :(

Did i make anything wrong or missed something?

Thanks in advance! and sorry for my moderate english

Spoiler



-- Edited by B4NE on Monday 13th of July 2020 08:08:45 PM

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1. The bike ran ok when you bought it?

2. Regarding the ISC solonoid, this new for me. Reading ISC related information does not make things any better :) But there is an option within Ecueditor to reset the ISC to a preset or new value?. What this does is for me a complete mistery... Have you warmed up the engine to above 80 degrees celcius? Does it run better above 80C?

3. Why only bench flash? You can get usefull info with the bike connected

4. What error are you getting back from Ecueditor?

5. Go to the installation files of Ecueditor, go to the map Common. Install this FTDI driver with admin rights!

6. First we need to get feedback of the ECU;
ECU has to be powered by minimal 500mah 12V

As a minimal;
Pin 12 12V - To external power source
Pin 15 TX - to RX FTDI
Pin 16 RX - to TX FTDI
Pin 35 GND - to GND external power source + FTDI GND

Please try to switch RX to TX on the FTDI and delete the 5V FWE. The FWE sets the ecu in flash mode, blocking the read of the ECU






-- Edited by Wiebren on Wednesday 15th of July 2020 04:19:05 PM

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I would read the bike first in dealer mode, lookup the error coding before ecu read



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1. Yes it ran without any troubles, the problem only occured since i did the Valve inspection

2. okay, but since it is not showing any error codes anymore when i bridge the two contacts (only shows C 00 which should be no errrors) the ISC is my only hope.. and thats why i want to connect it to ecueditor because like you said it has the ISC Reset Button and i would be really happy if that fixes the problem and saves me a fortune compared to bring it to a workshop/tuner. I can't keep it running long enough to bring it up to temp :( it seems to me that it is injecting waaaay too much fuel because the Sparkplug is completely black after like 5 mins :/

3. Because the bike is parked in a garage 30mins away from my flat and i thought it would be easier to try establishing connection to the ecu on the bench first and when that's working i still can hook it up directly on the bike

4. at first it does nothing at all then i select the COM Port, then i generate a new Map File to try to connect for Motor data only but it always shows this message† Error: Power is not ON, ECU is in Programming mode and so on.. ( Screenshot attatched)

5. Okay i'm going to try that and report here. Update: Did not change anything

6. I hooked it up on my Lab Power supply and that is capable of delivering 5 Amps, and for the 5V i used a Buck converter. That should be fine i hope.
i already tried swapping RX and TX but the thing with the FWE is a good point, i didn't know that. Update: Also nothing has changed

I only could get some different Modemstat values and "connect" to the enginedata but this was obviously a bug because i touched RX and RT at the same time..

Thank you, i'll report as soon i've tried your advices

Cheers, Thomas



-- Edited by B4NE on Wednesday 15th of July 2020 09:22:35 PM



-- Edited by B4NE on Wednesday 15th of July 2020 10:54:03 PM

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Veteran Member

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I messed something up, the above is the minimal for a bench flash unit. You are trying to read of course, where we need the K-line (pin 34):)

How skilled are you with the soldering gun but by the tools you have you should be fine Imo to fix a simple interface;

/download.spark?id=2316728&aBID=99460



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Ohh okay.. that should be no problem, i just have to buy the transistors.
I'm going to try that also and report here.

Thanks! :)


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K-line žsn't need for read the ecu!



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