kja.busa Posted July 16, 2009 Posted July 16, 2009 Thanks for the input peeps. The question was aimed to provoke responses, to see if I missed anything. And you have all mentioned stuff I hadn't thought about. So Thanks again!!David Silver I already use. But not thought of ringing them.ECU has not been tested, This is why I am not convinced. The grease monkey wanted another £50 to test it.... hence I paid him off and requested my bike back. I can take the bloody ECU out to get it tested myself... ffs !! The US versions do not use HISS, you are correct there Akey. But not entirelt sure if one will work on an HISS equipped bike?? Not at all happy with the service I have received from this guy. Essentially I feel I am back to square 1...KJA, nope battery is/was perfectly fine. Reading well within normal range (13.5 -14.5 volts). Nope never leave the ignition on for any lenghth of time. All valid points though mate. As it happens, TheWifes cousin is coming down to rally on her 954, so I had already wondered about swapping the ECU's around.... Watch this space I like you am not totally convinced this 'mechanic' was entirely honest with you Dan, I still say its nothing too serious, I have a mate who recently had something similar on a CBR600 and it turned out to be a bared wire earthing at certain revs causing the bike to cut out. Quote
Guest Posted July 16, 2009 Posted July 16, 2009 This might be a bit obvious, but, try this.* Disconnest the ECU loom* Get a multimeter and set to continuity test. (If you dont have a meter use a bulb and battery)* Put one meter probe on an earth point, then put the other on all of the individual wires within the ECU loom connector.If the meter beeps, then one of the ECU wires are short to earth.Its a long shot, but it will only take 2 minutes! Good luck man - Sounds like a nightmare!(If that doesnt work, You could of course also check that each wire isnt short to any other wires (If you get what i mean!?) by checking for shorts between each individual wire. Then you could maybe even check continuity through each of the looms wires to ensure nothing has gone open circuit?) Quote
Guest Posted July 16, 2009 Posted July 16, 2009 Not as obvious as you think!!Thats very helpful, thank you Bob. I'll do that before I shell out on getting it tested. My gut still tells me I have a short. At least the way you describe I should be able to narrow it down if i find a fault. Wish i'da thought of that earlier!!!! DOH!!!And not only do I have a multil meter.... I have a bulb with some wire soldered on!!! Harks from the days of my 1975 88" Landy!! Quote
Guest Posted July 16, 2009 Posted July 16, 2009 I think anyone thats ever owned an old english motor has a wire/battery/bulb Tester-ma-jig in a toolbow somewhere! I bought an classic mini 2 years ago, so thats me included!(BTW, Im a recently redundant'ed electronics engineer, who hasnt passed his bike test yet - In other words, crap with bikes, but might be able to help with 'lectrics!) Quote
Guest Posted July 16, 2009 Posted July 16, 2009 Always good to know Sorry to hear about the job. Its prettty dire everwhere Quote
Guest philgale Posted July 16, 2009 Posted July 16, 2009 is this bike gonna come up for sale soon and would lock wiring it sort the issue...would make a loverly track bike Quote
Guest Posted July 16, 2009 Posted July 16, 2009 Dan if a mate's coming down as mentioned, swap the ECUs and try BOTH bikes, if his bike works with your ECU then its not that.. and vica versa, if the problem stays with you machine then i would go wire chasing as KJA suggested and look for anything thats rubbed or bared..Seat, Tank and headstock would be where i would start.. high friction/contact areasIf it moves to your mates bike i think you can safely say it IS the ECU.. this is all dependant on the HISS not having a problem with another ECU, (not programmed in) Quote
Guest Posted July 16, 2009 Posted July 16, 2009 Yep, HISS is the only other issue I can think will make life harder ... Quote
Pete Posted July 16, 2009 Posted July 16, 2009 Just in case...http://cgi.ebay.co.uk/Honda-CBR900-RRT- ... tsupportedhttp://cgi.ebay.co.uk/HONDA-CB900R-CBR9 ... tsupported Quote
Guest Posted July 16, 2009 Posted July 16, 2009 Cheers Pete! Unfortunatrly, mine is a 2003 CBR954RR, try as I might, they won't fit!!! Thanks muchly though Quote
Korben Posted July 16, 2009 Posted July 16, 2009 It's all sounding very expensive Dan.... Might be worth trying to convince TheWife that it's time for a new bike!! Quote
kja.busa Posted July 16, 2009 Posted July 16, 2009 Just in case...http://cgi.ebay.co.uk/Honda-CBR900-RRT- ... tsupportedhttp://cgi.ebay.co.uk/HONDA-CB900R-CBR9 ... tsupported Both wrong models ECU's Pete, they are for the carb models, Dan's is injected. Quote
kja.busa Posted July 16, 2009 Posted July 16, 2009 It's all sounding very expensive Dan.... Might be worth trying to convince TheWife that it's time for a new bike!! Suzuki, hint, hint!! Quote
Guest Posted July 19, 2009 Posted July 19, 2009 This might be a bit obvious, but, try this.* Disconnest the ECU loom* Get a multimeter and set to continuity test. (If you dont have a meter use a bulb and battery)* Put one meter probe on an earth point, then put the other on all of the individual wires within the ECU loom connector.If the meter beeps, then one of the ECU wires are short to earth.Its a long shot, but it will only take 2 minutes! Good luck man - Sounds like a nightmare!(If that doesnt work, You could of course also check that each wire isnt short to any other wires (If you get what i mean!?) by checking for shorts between each individual wire. Then you could maybe even check continuity through each of the looms wires to ensure nothing has gone open circuit?) Right Bob.... done that.. And yes I most definatley have 3 wires within the loom that are shorting to earth. Just to got trace them back now.... But before I take the tank off etc, and all of that parlava ....Is it likely they are supposed to be like that?? Or should I not get any shorts to earth? I also have continuity to the chassis from both the + and the - of the battery ... so something deffo wrong somewhere ... Quote
Guest Posted July 19, 2009 Posted July 19, 2009 Right Bob.... done that.. And yes I most definatley have 3 wires within the loom that are shorting to earth. Just to got trace them back now.... But before I take the tank off etc, and all of that parlava ....Is it likely they are supposed to be like that?? Or should I not get any shorts to earth? I also have continuity to the chassis from both the + and the - of the battery ... so something deffo wrong somewhere ... Hi mate,The 3 wires MAY be additional earth lines, but I doubt it. What you could do is unplug the loom at the other end(S) and test it again to see if there is continuity through the loom (If that makes sense?)If that doesnt show anything, i would say something on the other end of the loom may have gone faulty (Hence continuity of +ve to earth).What is the age/details of the bike? I will see if I can find a wiring diagram on the net and see if I can narrow it down a bit.... Quote
Guest Posted July 19, 2009 Posted July 19, 2009 Hey again thanks for your help mate.The bike is a 2003 Honda CBR954RR Fireblade.Right then, I have a wiring diagram in the Haynes manual. From looking at it, I can tell you they are not listed as earth wires. So can I make the assumption that the wires I have found shorting aren't supposed to? As for testing continuity in the loom, possibly, but I haven't got it stripped down yet..... Quote
Guest Posted July 19, 2009 Posted July 19, 2009 Hey again thanks for your help mate.The bike is a 2003 Honda CBR954RR Fireblade.Right then, I have a wiring diagram in the Haynes manual. From looking at it, I can tell you they are not listed as earth wires. So can I make the assumption that the wires I have found shorting aren't supposed to? As for testing continuity in the loom, possibly, but I haven't got it stripped down yet..... I doubt it. Any idea what the 3 wires lead to (as per the diagram/wire colours/etc) ?? Quote
Guest akey Posted July 19, 2009 Posted July 19, 2009 Looks like you might have found the fault Dan, hope its easy to find and sort mate. Quote
Guest Posted July 19, 2009 Posted July 19, 2009 Any idea what the 3 wires lead to (as per the diagram/wire colours/etc) ?? I did have a look earlier, but with not much success. I was gonna go staight to other end and work my way towards ECU rather than away from it. Can't decipher the drawing very well ...as yet But the fact that they shouldn't be earthing is promising! It means I may well be onto the problem. Looks like you might have found the fault Dan, hope its easy to find and sort mate. So do I mate, so do I Quote
Guest Posted July 19, 2009 Posted July 19, 2009 anyone know where I can find an online wiring diagram? Quote
Guest Posted July 19, 2009 Posted July 19, 2009 Sorry, struggling to find one. I'll take a pic and host it and link ya. Likely to be tomorrow though. Quote
Guest Posted July 19, 2009 Posted July 19, 2009 Sorry, struggling to find one. I'll take a pic and host it and link ya. Likely to be tomorrow though. I found one (and a good source of manuals in the mix - will post a link in a mo)Dan - Any idea what colour the wires were? In the meantime.... Fuel cut out relay maybe? Quote
Guest Posted July 19, 2009 Posted July 19, 2009 Green with a pink stripe (two like this) and gawd .. I can't remember the other one...Pic of drawinghttp://i44.photobucket.com/albums/f40/mysafpics123/CIMG1136.jpgIf I'm right, they are out of the ECU up in the top right. Far right of the plug, last 3 or 4... Quote
Guest Posted July 19, 2009 Posted July 19, 2009 Green with a pink stripe (two like this) and gawd .. I can't remember the other one...Pic of drawinghttp://i44.photobucket.com/albums/f40/mysafpics123/CIMG1136.jpgIf I'm right, they are out of the ECU up in the top right. Far right of the plug, last 3 or 4... Well, one the diagram I have and the one you supplied, i can only find one green/pink wire... that leads to the 3rd fuel injector.....But surely it would start if just one of the injectors isnt working? Quote
Guest Posted July 19, 2009 Posted July 19, 2009 You'd think so. At least I have something I can trace back now. Use a bit of nous and I should be ok. Just gonna be a little time consuming, at least there looks like there is light at the end of the tunnel!! Quote
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