TuffguyF4i Posted August 10, 2009 Author Share Posted August 10, 2009 If i short the relay, the pump works. (as mentioned above) Proving its not the wiring from the relay to the pump. Relay is getting voltage... Short it how? Getting what voltage? A relay has two inputs: the input that activates the switch, and the input that is carried through the switch. seems pump isn't getting the signal when to turn on/off. That comes from ECU...correct? Uh. The ECM controls the switch on the relay. That's how it 'signals' the pump. Just measured. Both the engine stop relay, and the fuel cutoff relay are hot (12V) in 3 positions. I'm going to replace both the engine stop relay and the fuel relay just so i know for sure, they are good. I'd hate to do more work then I need to. Since the relays ARE getting juice, i believe that tells me my ECU is ok? Where does that leave me? I swapped it with both of the others,,could it be they are blown to? Could someone do me this favor. When the pump first cycles and , does the second from the left fuel injector click? Right now, when the stop engine relay activates with the kill switch, i'm getting a single click under the tank...hunted it down and it is the second from the left (when sitting on bike) fuel injector. Checked all connectors that are anywhere near the loom. Also rechecked ground and the 3-4 sealed connectors that are bundled under the tank. Nothing out of place. Did not find the other connector that cbrxx was talking about. Do you mean the green connector on the left side of the bike that is all taped up? This one was about 4 inches south of the left coil pack. Quote Link to comment Share on other sites More sharing options...
TuffguyF4i Posted August 11, 2009 Author Share Posted August 11, 2009 Could someone check this for me, to make sure i'm not going insane. In the large cluster of about 10 green wires. Do some have voltage? Most are grounds but i know i have at least on that signals the fuel injector to cycle. Quote Link to comment Share on other sites More sharing options...
lexxus Posted August 12, 2009 Share Posted August 12, 2009 [ I did, and it was as bad, but it needs to be checked for corrosion. Same kind of deal. Do you have a power commander ? If so unplug it and try it without. i had a problem like this, and it ended up being a ground wire loose and mismatched on the pc3 Quote Link to comment Share on other sites More sharing options...
cbrxxquad Posted August 13, 2009 Share Posted August 13, 2009 \Did not find the other connector that cbrxx was talking about. Do you mean the green connector on the left side of the bike that is all taped up? This one was about 4 inches south of the left coil pack. Yes, take the tape off and take apart and check for corrosion. And like I was trying to say I think the ecm controls the ground, but have not checked the wiring. Quote Link to comment Share on other sites More sharing options...
TuffguyF4i Posted August 13, 2009 Author Share Posted August 13, 2009 \Did not find the other connector that cbrxx was talking about. Do you mean the green connector on the left side of the bike that is all taped up? This one was about 4 inches south of the left coil pack. Yes, take the tape off and take apart and check for corrosion. And like I was trying to say I think the ecm controls the ground, but have not checked the wiring. I'll check it. Any chance you can stick a voltmeter into the big cluster of 10 grounds and see if there is voltage....with the ignition and kill switch in the run position? Quote Link to comment Share on other sites More sharing options...
cbrxxquad Posted August 13, 2009 Share Posted August 13, 2009 what I was hoping you would do is supply a ground to the ground wire at the relay.Just in case the ecm has failed. the deal is the ground wire would see low volts after the load and would be subject to failure when you put high volts to it when you killed the fuse. Quote Link to comment Share on other sites More sharing options...
TuffguyF4i Posted August 17, 2009 Author Share Posted August 17, 2009 FIXED!!!!! My hunch, supported by cbrxx's help, proved true. The ECM was at fault. I was able to get one off (the other site) for pennies on the dollar from someone parting out a bike. I have 3 used/new relays that all work too!!! Thanks for all the help guys!! When i have a rainy afternoon, i'm going to cut open the potted ECM that failed and see what component fried. Its probally some $.01 component. Heres the lesson I learned. If you do electrical work,,, cut the friggen power off first. Quote Link to comment Share on other sites More sharing options...
Jetsetter Posted April 29, 2010 Share Posted April 29, 2010 FIXED!!!!! My hunch, supported by cbrxx's help, proved true. The ECM was at fault. I was able to get one off (the other site) for pennies on the dollar from someone parting out a bike. I have 3 used/new relays that all work too!!! Thanks for all the help guys!! When i have a rainy afternoon, i'm going to cut open the potted ECM that failed and see what component fried. Its probally some $.01 component. Heres the lesson I learned. If you do electrical work,,, cut the friggen power off first. A very good thread to read ,, glad it was here to read ,, helped me out a bit ,, thanks all. Quote Link to comment Share on other sites More sharing options...
02XXCA Posted September 16, 2014 Share Posted September 16, 2014 Think my ECU bit the dust, bypass the fuel cut off relay and pump cycles on bike will start, need to test with a borrowed ECU. When you have it jumpred the kill switch or key will not turn the bike off, only the kickstand switch. May have to rig it for a quick trip. Anyone siting on a used ECU for an 02 that they want to part with? Quote Link to comment Share on other sites More sharing options...
Zero Knievel Posted September 16, 2014 Share Posted September 16, 2014 If you do electrical work,,, cut the friggen power off first. Reassuring to know that even experienced people sometimes forget the basics. Glad you figured out the problem. Quote Link to comment Share on other sites More sharing options...
TuffguyF4i Posted September 17, 2014 Author Share Posted September 17, 2014 Wow..old thread resurrection! Actually, the battery also ended up going bad. Not sure if it was caused by me shorting the harness or not. But the bike ran like shit even after the new ecu. New battery and boom..perfectly running xx. Quote Link to comment Share on other sites More sharing options...
02XXCA Posted September 17, 2014 Share Posted September 17, 2014 (edited) Swapped ecu and all relays and still wont cycle the fuel pump upon key turn. The kill switch works, the kickstand switch works, swapped BAS and still no work. I can jump the fuel relay and get pump to cycle so I know it's not bad and the bike will run until I pull the jumpered relay. All fuses checked as well. I'm guessing there is a bad wire between the ecu and relay so it's not get to the signal to close and allow the pump to prime. Any other suggestions? 107K, should I just sell it know that's broken in. Chris Edited September 17, 2014 by 02XXCA Quote Link to comment Share on other sites More sharing options...
cbrxxquad Posted September 17, 2014 Share Posted September 17, 2014 Chris, I know I know what this is. But, for the life of me can't remember. I can't look at the diagram right now. At work. But, is your headlight coming on? Quote Link to comment Share on other sites More sharing options...
02XXCA Posted September 17, 2014 Share Posted September 17, 2014 Yeah, all others things appear to work without issue. Quote Link to comment Share on other sites More sharing options...
cbrxxquad Posted September 17, 2014 Share Posted September 17, 2014 I think this was a problem caused by forcing a Fuze into the Fuze holder with another wire for accessories causing there to be a light touch on the Fuze be the contacts. I was the reason I went to soldering that wire to the copper of the block. You can remove the terminal strip in the Fuze blocks . Think there is a clip you release with a small screwdriver. Tighten the contacts and solder a wire according to always hot or ign. 1 Quote Link to comment Share on other sites More sharing options...
cbrxxquad Posted September 18, 2014 Share Posted September 18, 2014 Call me Chris and I will talk you through how to know. And to fix it. Quote Link to comment Share on other sites More sharing options...
02XXCA Posted September 18, 2014 Share Posted September 18, 2014 It looks like my turn signal relay is throwing power down the ground wire. I may have crossed the plugs for the BAS and the turn signal relay which may have also screwed up the BAS as well. Need to order those and see what happens next. Stan, I will give you a call after I get those parts and see if I still have issues. Quote Link to comment Share on other sites More sharing options...
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