| Author | Message | ||
     Flybysr1 |
Hi all! I've been lurking around this site for a few years after buying a X1. Now I picked up 1125R to take to track days. I got it cheap cause it doesn't run. I know it has a bad stator so I'm planning on tackling that after I get it to run. The cluster shows u00001 can buss failure and all fuel system errors available P00628,P00629 and P0067. -Checked for grounds and shorts on the buss, no issues. -The pump runs until pressure builds then stops. -The cluster shows pressure at the injectors -I can pour gas down both throats and she fires up. injectors don't fire -Manual indicates ECM is toast - The nice folks at IDS are willing to test the ECM - Has anybody seen anything like this?} | ||
| Shawns |
Make sure the injectors are not clogged. The pressure switch is just after the pump so you can still register pressure but be clogged down the line. Is there power to the injectors? I want to say they turn on with a ground from the ecm. I would have to check the manual. If you have access to ecmspy clear all the historical codes and start from there. Most likely the codes stored are from a lack of voltage since the stator is bad. (Message edited by Shawns on December 31, 2015) | ||
| Flybysr1 |
I removed the pump and inspected the wires and bench tested it, then reinstalled. Everything was clean as whistle. I'll put my oscilloscope in the injectors to see if they're getting pulsed but I don't think they are. I hope it's not the ECM. I like your comment on codes due to low voltage. I messed up my ecmspy cord playing with my X1...Ill get a new one. Thanks for the response.  | ||
| Hatch_daddy |
Nice work space! | ||
| Shawns |
There is constant power on the grey wire. The ecm grounds the injectors to fire them. Front is white yellow pin 29 at the ecm and the rear is green grey pin 30 at the ecm. You may have a break between point a and point b. Are there any other mods dome by the po? Check your wiring at the ignition switch. This is a known problem and you may not be energizing a circuit that is needed. Just food for thought. | ||
| Flybysr1 |
thanks Hatch! It's my cave!  | ||
| Flybysr1 |
Thanks Shawn heading out now.. I'll get back with results. | ||
| Flybysr1 |
The green wire does not go to ground, so it's not firing the injector. Used a fluke scope, no triggers. I confirmed this in two ways. I hooked up an ohm meter to ground to see if green wire went to ground, nothing. Then to confirm the confirmation I rigged a small 12 volt light across the plug again nothing. I think I need a new ECM. | ||
| Shawns |
Did you check for continuity from the ecm plug to the injector plug? Do you have 12v on the gray wire? Check your aux relay, this is the one that supplies power to the injectors.  | ||
| Flybysr1 |
Yeah, I have 12v on gray wire with the ignition on. The green wire didn't go low enough to trigger. It looks like the relay brings in the 12 volts to gray wire. Thanks again it's always good to get knowledgeable support. | ||
| Shawns |
Hmmm. I would check your leads at the ecm. Make sure you have good power and grounds. As I stated previously, I would check for continuity on the trigger wires. Here is an ecm pin out.  | ||
| Flybysr1 |
I've heard most issues on these bikes end up being related to grounds....I'm on it. | ||
| Flybysr1 |
I went to a pin out in the back of the manual that referenced battery on pin 17, it measured +13vdc. I can say for sure that I have solid grounds at the black connector on pins 8,16,24 and 33 I was really hopeful these tests would show something.... | ||
| Shawns |
You can always pick up a used ecm. When you crank it over are you getting ground at the pins for the injector at the ecm? (Message edited by Shawns on January 01, 2016) | ||
| Stirz007 |
Double-check engine (front cyl, left side) and harness (fork tube, next to lower triple) ground connections first! More problems related to gremlins have eventually been traced to a bad ground than anything else. I've thrown theft errors, bad sensors and bad ECU codes that all magically went away went I finally found a loose ground - after going through all the other possibilities. (Message edited by Stirz007 on January 02, 2016) | ||
| Flybysr1 |
Shawn- It's not showing any movement. it sits around 3.5M and doesn't move. I can't thank you enough for your help. I'm packing it up to send to IDS. I hope they are gentle. Stir - thanks, I agree with your comment. At this point I think I've checked all the grounds. | ||
| Shawns |
No worries. Wish I could be of more help. | ||
| Stirz007 |
ECM failures are pretty rare I think, but if you want to check I have a stock one (and some injectors) you could borrow to confirm. PM if interested. | ||
| Zac4mac |
I've been into electronics since the mid 70s and the weirdest problems have ALWAYS been grounds. All but one have been fixed by finding/fixing the bad connection. Z | ||
| Nuts4mc |
an old post of mine where I added a redundant ground directly to the motor (scroll down for pix): http://www.badweatherbikers.com/buell/messages/290 431/674577.html?1333846568 WASG: a) the odd colored relay (the only black one in the relay "box" in the tail section)...did some research awhile back ....Vrod owners had a similar issue with non starting...didn't want to get stranded out here in the old west (P/N on relay "Tyco VFM-15F71-S01) matched it up at the auto parts store with a headlight relay...new one works fine) b) the "kill switch" on the handle bar....since I have '08, I have to shut off the bike with the kill switch to dis-engage the parasitic drain from the IC/Theft program...the handle bar switches are of marginal design and quality IMO...might want to check that area. c) the Ignition switch itself...the pigtail from the switch is too short and causes the "circuit board" at the bottom of the switch to fail...may want to inspect that area http://www.badweatherbikers.com/buell/messages/290 431/710329.html?1368409142 hope this helps | ||
| Flybysr1 |
The weird thing is that it's the injectors that are not firing. Pour some gas down intake and it fires til the fuel is gone. Spark and timing appear ok.... | ||
| Panshovevo |
Have you physically checked the ECM ground point on the side of the front cylinder, or just checked for continuity with a meter? Have you checked the injectors for blockage? Have you considered resizing your pictures before posting them so they don't blow the page up so big it's hard to read without a magnifying glass? | ||
| Flybysr1 |
Yes I checked the ground on the front cylinder and used a fluke. I have not checked to see if the injectors are clogged. The injectors are not getting a pulse ECM. The key switch enables 12vdc to gray wire. Shawn pointed out the ECM takes the opposite wire to ground creating 12vdc pulse across the injector. That's not happening. Not sure what I did wrong on the pix. I sized them down to the requirement. I'm a nube. | ||
| Flybysr1 |
Yes I checked the ground on the front cylinder and used a fluke. I have not checked to see if the injectors are clogged. The injectors are not getting a pulse ECM. The key switch enables 12vdc to gray wire. Shawn pointed out the ECM takes the opposite wire to ground creating 12vdc pulse across the injector. That's not happening. Not sure what I did wrong on the pix. I sized them down to the requirement. I'm a nube. | ||
| Panshovevo |
Are you sure your equipment is capable of and set properly for catching a pulse measured in low milliseconds? If I understand you correctly, you used a multimeter to verify the ECM ground to the front cylinder head. Let me add to the chorus of grounds, grounds, grounds. FWIW: When I bought my 1125CR, it had some noticeable hesitation under 5000 rpms at part throttle, in spite of having a "Race Use Only" engraved ECM. While chasing a phantom voltage issue that was setting PITA trouble codes, I removed enough of the left side cooling system to physically check the ECM ground on the front cylinder. In spite of the fact that it looked okay and tested okay with a meter, I installed a 16 gauge wire from the ECM ground point on the engine to the negative post of the battery. Next time I rode it, the phantom problem was gone, and nearly all of the hesitation was gone also. I took the wife out to dinner on the bike that night without mentioning anything about what I had done, or the results. Within a couple of miles, she asked what I had done to make it run better. The difference was that noticeable. If you limit the width of posted pics to around 800 pixels, the page stays the normal size. | ||
| Flybysr1 |
Well....I just opened an email from the good folks at IDS. They checked out my ECM and sent a nice report. The chorus is correct! After I eat my hat im going back to the cave to fix the frickin ground. | ||
| Panshovevo |
Now, when you enter Diagnostic Mode on the IC, and toggle to fuel pressure, what pressure does it display, and does it hold steady, or does it drift to a lower value? | ||
| Flybysr1 |
I found the ground screw on the cylinder head to be slightly loose. It showed .5ohms on the pin at the connector. Not really loose but it should have been tighter. Thanks to my new 5/16 universal socket, it ain't loose now. I work with robots so I'm familiar with grounding issues...always the least likely and hardest to get to connections are the issue. IDS re-flashed my ECM to a race ECM tuned to a Barker pipe(that I don't yet have). The ECM is on the way back home. I saw that my fuel pressure was 520 (my memory)or so on the instrument cluster. When I get the ECM back I'll check for holding pressure. | ||
| Panshovevo |
While you're waiting for the ECM, pull the injectors out, and clean them. Make certain they're not blocked so you can definitely rule out that possibility. Cover all the bases. | ||
| Flybysr1 |
Pulled rear injector and bench tested it...no issues. The front injector will be more challenging so I'll wait on that until I get the ECM back or get really bored. Thanks for the support Pan. |
