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Post Info TOPIC: 08 gsxr 750 help


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08 gsxr 750 help


Hi, could someone please give me some help with a big problem?

Last night I used the ecu editor to flash an 08 gsxr 750. All I did was turn off the gear restrictions and fuel soft cut. It said flash sucessfull, but when I flipped the switch to engine data something very strange has happened(I've done 3 gen2 Busa's without any problems).

After switching to engine data normally the fuel pump primes. The fuel pump began to prime, then quit about half way through, it also did not sound normal. The bike will turn over, but will not start. All lights work, all fuses are good. There are no trouble codes, as C00 is displayed.

The throttle position sensor was making a strange sound and you could feel it buzzing when you touched it. There was only 5.1 volts at the fuel pump. Then the TPS noise went away and no trouble codes will display, not even the C00. The fuel pump will no longer prime, yet it will run constantly now as long as the key is on. The tach is also flickering when you try to start the bike, I assume that this is a sign that the bike is still firing?

The bike is doing several strange and unconsistant things like this. I tried disconnecting the battery and flashing it back stock, but the problem remains. I am concerned that somehow the ecm got fried, yet I have no clue how that could have happened.

The jumper wire is in the correct ecm locations, 17 blue, 29 brown, and the yosh plug is the same as the Busa. Greg Smith verified this when I asked him. Greg also said that he belives it could just be the wrong bin file flashed, but that he has not dealt personally with the gsxr's. He advised me to ask here. I'm also 100% positive the jumper is connected as stated. I don't know how it could have said flash sucessfull, switch to engine data if it wasn't.

I also do not know how/if you can test an ecm, other than put it in another bike, which I do not have access to. I obviously don't want to buy another ecm unless I have to. Especially not knowing if there is now a short or something present that could possibly fry a new ecm.

Of course I want this fixed, but I am more concerned right now with what may have caused this. I am at a total loss.

Can anyone please help me or point me in the right direction? Thanks alot.



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So with Greg Smith's help I realized that dummy me flashed the ecm with a European spec map...and it's a U.S. bike!
I'm still having the same issues. The bike will still no longer show the C00 or any other codes. However the ecu editor shows the bike as having C11, cam position sensor. We ordered one, should be here this Friday or Monday.
My main concern is that is it possible to fry an ecm or cause a short by loading a euro spec map into a U.S spec bike?
Could the signal sent to the euro spec ignition imobilizer have fried the cam sensor, ecm, or a random short? Since the imobilizer is not on a U.S. bike?
Thanks again for any help.

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I am currently mixing and matching loom's, ecu's and settings , buying from various countrys to setup my earlier model bikes, no probs at all mixing and matching any of it , i seriously doubt a cam sensor could be damaged through the ecu or flashing, more likely a physical problem with a plug not fully installed or a pin backed out of the ecu .,
i do have one ecu that will not recognise a crank signal but it has damage to the cases and i expect the crank sensor circuit was shorted 12v power and damaged internally , serve me right for buying from ebay...

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Check your battery and make sure it puts out no less than 12volts with lights on. I would expect at least 13.5 with everything turned off if the battery is well charged.

Mark

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Thank you guys for the replies!

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The cam position sensor did not fix the problem. The fuel pump relay is also good. The fuel pump still is only getting 5.1 volts. The ecu is good as it started another 08 gsxr 750. I'm almost sure now of a short somewhere.
I'm printing the wiring diagrams and will have to go point to point with a power probe to try and find a possible short.
I also sent Petrik a message to see if anything jumps out at him as a possible problem. Obviously these are hard things to diagnose without being there in person.
Thank you again.

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  Assuming you have stock fuel pump and fuel level sensor in place. The fuel pump wiring is along side of the fuel level sensor wires. The sensor has the 5 volts going to it and a ground wire. The pump is feed from a relay and should have either battery voltage or 0 depending on the relay being open or closed.

 The fuel pump should only have power for about 3-4 seconds after the key is turned on then, it should only run again if the engine is running.

 Is it possible you have upset or unwired the tip over switch? If your 750 is like my 1K there are 3 sensors right near the ecu and those could have been disconnected perhaps.

 If the bike ran before the flash, you need to look in the areas that you worked in on the bike. Look for anything that could be unplugged or not put in back in place after your work.

Mark

 

 

 



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What is your supply voltage to the fuel pump relay ??
and if you externally gnd the fuel pump relay trigger wire (yellow with black trace), does the pump run

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Thank you both. The bike is not at my house, but I'll let you know once I'm able to work on it again.

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No fuel, no fire.

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no power to the tip over switch, which seems to be the problem.

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powered tip over switch, no change.

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TOS is 5v don't give it 12v, , output signal from the middle wire should read 4v upright and .6v on side

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The tip over switch would not put out any power as no power was reaching it.  The tip over switch itself did not seem to be the problem, but it now may be fried since it got 12 volts, correct? Although you can still hear that the switch is loose inside as it should be, as opposed to it being fried and welding itself up.



-- Edited by sixpack577 on Monday 15th of August 2011 01:06:04 AM



-- Edited by sixpack577 on Monday 15th of August 2011 01:14:57 AM



-- Edited by sixpack577 on Monday 15th of August 2011 01:15:48 AM

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Ecm also started another bike, so it is good, as well as all fuses and relays.
Giving the tip over switch 12v also made the fans come on and the fuel pump hum.
Seems to me there is a short somewhere, I have no other explanation.

There is also no 5v reference coming from the ecm, makes no sense to me.

Thanks for the replies.



-- Edited by sixpack577 on Monday 15th of August 2011 01:32:44 AM

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sounds like your ecu is not outputting , probably due to security settings , more than a fault in the ecu or wiring,
tos may be protected and not fried , only know when you give it the proper voltage and check output
also did the 12v to tos put 12 v to the rest of the 5v system, tps, map,cam sensor etc are all powered from that same 5v output from the ecu

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My friend working on it with me said he didn't think the ecu was putting out power where it should either. But how could that same ecu start another 08 gsxr 750 then? That's where I'm really stumped. Wouldn't a fault or security setting keep that ecu from working in any bike? The current flash that sucessfully loaded into the ecu(supposedly, according to the ecu editor it went in)is a U.S. spec new base map with the gear limiters and fuel soft cut removed, nothing else was changed. I'm unfamiliar with any security settings. I'm also not doubting you, I tend to agree with what you've said. I just don't know enough to completely follow you.

Thanks



-- Edited by sixpack577 on Monday 15th of August 2011 01:20:39 PM

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Do you still have the editor cable and interface box connected ?


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Not now, as the bike's not at my house. My laptop wanted to act stupid yesterday and ecu editor kept saying com ports weren't installed. It's given me that problem before and then went back to normal. I can fix that issue though.

What am I looking for with the ecu editor connected?



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Cable and interface connected without the laptop seems to upset the bike , gives symptoms like you describe

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No, it's only been connected to the laptop and the bike together. The interface cables have not been left connected to the bike at all without being connected to the laptop.



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  Has this bike been modified in any way or has it been wrecked? Have you added any other electronics to it like an ignition kill or tune box? Have you removed any electronics that came on the bike from stock?

 List all of your mods that are not cosmetic. 

Mark



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The bike has a full yoshimura exhaust, and no power commander/fuel management, ect. The wire that powered the stock exhaust butterfly valve servo had been previously pulled from the ecu harness, supposedly done by a dealer. I plugged it back in and the servo works, but there is no change in the bike's condition either way. The bike is basically stock, and to our knowledge it has not been wrecked. It is in very good condition.

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I think you should try going through the requirements for the engine to start. Part of the list: kickstand switch, clutch switch, handlebar kill, neutral gear indicator. May be more but, thats the top of my head.

You could also use the repair manual and look for suggestions there.


Mark

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Probably shooting in the dark but check the ecu couplers on the harness on the bike that note starts with the ecu.
Happened me once, forgot one of the connectors and bike acted normal but no fire or spark. Make sure all sockets
in the connector are in their place, and isolate all ends in the harnes modified or cut off.

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As said, the ecu from the bike that won't start will start another bike. The bike that won't start was taken to the local dealer where they said the ecu IS the problem. Apparently it did start with another ecu. Makes no sense. If somehow the supposed bad ecu is "locked", or has some sort of secutiry setting that's preventing it from starting the bike, would it then not start any bike? I also can not get a definate answer as to whether or not a U.S. model gsxr 750 even has the ignition immobilzer.
My friend is currently looking for a used ecu, as the dealer wants $1300. Assuming that fixes it that's great. But I'm still lost as to exactly went wrong.
I've sucessfully flashed 2 Hayabusa's again since the problem with the 750. I don't know where else to look for answers.
Has anyone else in the U.S. had sucess flashing a gsxr 600/750/1000 with the ecu editor, or any issues at all?
Thanks for any direction or help.
????



-- Edited by sixpack577 on Tuesday 30th of August 2011 10:12:18 PM

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I guess I did not see that you put an USA ecu in a Euro bike. Is that correct? If so, the Usa bike has a resistor in one circuit coming from the ignition. If you do not have it in place the bike will not start.

 

 

Mark 



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No, it's a U.S. bike and the first time I accidentally loaded a European map into it. I then put a U.S. base map back in, but it still will not start.

The ecu from the non running bike would start another 08 750. My friend put a used ecu in his bike today and it started right up!

So the ecu in the non running bike will start another bike, but not it, and a new ecu starts the non running bike.

Seems as if there is an immobilizer and for some reason it's not recognizing the original ecu any more after the flash.

It makes no sense to me and I can't find reasons or answers anywhere.

Thanks



-- Edited by sixpack577 on Friday 2nd of September 2011 11:45:57 PM

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 Go to this site to download your service manual free.  http://servicemanualsgsxr.com/

 Then, go to the section called Ignition. In there you will find the things the ignition checks and does to make the engine run. Check everything listed. It only takes one to stop you in your tracks.

 

Mark

 



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Try to disable immo in the .bin and flash it to the problem ecu. If the bike starts then you know if the immo is your problem or not.
That should skip the immo procedure in the ecu hence not be able to lock anything up. RidgeRacer or someone correct me if im wrong here.

I personally dont know which adress to change since im all new to code disassembling. But i think remeber reading somewhere a couple of
guys done it easily when finding right adress in the bin.

Also try doing some new flashes with stock us file to it. With a complete reset/erase of the ECU if possible with EE2 or FTDI software?


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Thanks, but I have the service manual and have checked everything else. The problem is definately the ecu.



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Twice wrote:

Try to disable immo in the .bin and flash it to the problem ecu. If the bike starts then you know if the immo is your problem or not.
That should skip the immo procedure in the ecu hence not be able to lock anything up. RidgeRacer or someone correct me if im wrong here.

I personally dont know which adress to change since im all new to code disassembling. But i think remeber reading somewhere a couple of
guys done it easily when finding right adress in the bin.

Also try doing some new flashes with stock us file to it. With a complete reset/erase of the ECU if possible with EE2 or FTDI software?

I will try that. Thank you!


 



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6pac where are you, i am in Cali for the next 2 weeks ,. have several bikes and ecu's i could test yours against if you want to express it to me

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I'm in VA. I'll ship it to you if you have time and don't mind. I'de love to know what went wrong with it. Thankyou sir.



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925 978 7692 give me a call and ill give you an address

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I need to go and get it, and I've been very busy. Do you have any way to test it other than just putting it in another bike. I already know it will start one bike and not the other.

Thanks



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Did you ever figure this out? I'm having the same problem with my 2011 750.


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Nope.  The ecu would not start the bike it was flashed in, but it would start another 750 of the same year, and that bike ran just the same with it.

We just replaced the ecu for the flashed bike, and I still have the old ecu.

Strange, it makes no sense and no one anywhere has been able to give any insight as to what happened.

I've sucessfully flashed a couple more hayabusas since without any problems.

I'm now gunshy of the gsxr's until someone can give me an answer.

Greg Smith tried to help, but gsxr's aren't his thing(he does hayabusas and is excellent to deal with).

Smith said I should contact Petrik.

I tried contacting Petrik a couple of times, but he never answered.

He's very busy I'm sure, but in this unique situation I was expecting some kind of help from him. Oh well.

Good luck with your problem, I'm sorry I can't be of any help.



-- Edited by sixpack577 on Sunday 27th of May 2012 12:00:13 AM

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On cars i know some ecu´s can be bricked, but often recovered. By guessing in this case NBD.
But i dont think its problem here since it starts other bikes. When you tested on other bike.
Did you disable immo or move along key and antenna? So we know if its immo problem or not.

Else might be different identification numbers in .bin maybe and that bike dont start with flashed id?
Did you read the ecu and flashed stock back? Or did you use the .bin provided from EE?

What ECU number on bad ecu? And what stock ecu number on bike that it worked with?
Found at least 38H10 and 38H20 on us market OEM parts.

Was it not something similar with 1000 05-06 with 41G60 ecu? When flashed with G10 or G00 it would not work.
I might be wrong about that, please correct me if so. A bit tired now....

Edit: Agree with Justin below, find it hard to believe that its not going to be able to be reflashed to working condition and problem is probably in what file is used.



-- Edited by Twice on Sunday 27th of May 2012 12:42:22 AM

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You should still be able to flash another bin file to the ecu even if you have flashed the incorrect one initially? Please try some basic test

  1. Try to verify checksum
  2. Try to verify read
  3. Are you getting engine data

I would be very surprised if flashing a bin file from a different region would cause damage to circuits. I have cross flashed gsxr bins to busa ecus, b-king bins to busa ecus, busa bins to gixxer ecus etc etc. with no problems



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When I try to read erase or write the programmer tells me that the interface is not on or not in the programming mode. It, however, is and the little red light is on and everything.

When I try to get engine data, it takes an extremely long time to synchronize, but will say that it is connected as soon as I turn the key off. Either way, even when it says it is connected, it doesn't actually display any engine data.

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Also, number on my ECU appears to be 15J10, if that helps anyone at all


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Check your connections, you probably need to install the jumper harness pins deeper in the ecu plug , and the interface harness needs checking too
The connected when you turn off is not realy connected . but more of a clue to the fault


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L1, is your problem exactly like sixpack?
Flashed once then failed? What file did you use to flash with?
EE dont got any for 750 L1 what i can see, did you read out your stock and flashed?

Or do you not get any connection to ECU at all to begin with?



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It does appear to be exactly like sixpack as far as the problem with it not running, however, I do believe he was able to reflash it (even though that never solved his problem). I used the EU file provided with EE for the "k11" 750. I used the verify function and it said that it was the same file. Before I flashed it, it connected like a charm, no problem at all. Now, it wont let me flash at all. With the yosh plug disconnected, it will let me scan engine data properly. With it plugged in, it wont do anything.


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Is your ecu part number 32920-15J00? Do you got the verified/read/stock bin saved?

If you got spare pins or ecu econnector, try to read it on the bench, and AFTER try a flash. With power supply and FDT and EE separately.
Else try above on bike.



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You guys don't think that the problem is that he flashed a 15J00 map into a 15J10 ecu?

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Initially but that was fixed first i thought ??

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