675 will not start - Triumph675.Net Forums
Maintenance and repair Problems, fixes, general maintenance talk

 
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post #1 of 10 Old 01-29-17, 19:41 Thread Starter
WAW
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675 will not start

Hello,
Any suggestions would be appreciated. 08 Daytona 675 is in the process of having things changed over to a track bike setup. yesterday I unplugged the headlights and gauge cluster to fit the new fairing. Bike started fine the other day before I did this, today, nothing. I read a few other threads that the battery was at fault, etc and I have tried a few things but it still wont start. Battery has been on a maintainer for the past few weeks in a heated garage (and I started fine a few days ago). Battery is reading 12.4 V sitting (not on trickle charger). The bike will only fire over briefly before the cpu has completed its scan when the key is first switched on. It will fire over and within 1 second shut off. I have the clutch lever off to make sure the switch is not engaged. Suggestions?
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post #2 of 10 Old 01-29-17, 20:38
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If it turns over it is not the clutch switch, so you can eliminate that. Retrace what you disconnected, recheck all connections. You said the bike will fire over before the ECM boots up? Then shuts off when it completes booting up? Did I understand this correctly? My bike doesn't turn over until the ECM is booted up.
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post #3 of 10 Old 01-29-17, 22:08 Thread Starter
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Yes, it will turn over as soon as I turn the key to on and if I try to start it right away before the ecu does its check; it will start for about a second and then shut down. I have checked all connections a couple times. I read on another thread that it may be the battery. I have also tried to boost it with no luck.
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post #4 of 10 Old 01-29-17, 23:18
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That doesn't sound like the battery to me. I may be wrong, but if the tender isn't helping I suspect I am correct. Did you retune your ECM or anything? Sounds like something with the ECM or the ignition.
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post #5 of 10 Old 01-30-17, 00:12
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post #6 of 10 Old 01-30-17, 12:50 Thread Starter
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Problem found!

I found the issue late last night after I went crazy with the multimeter.
Turned out that there was a small break in the tip sensor harness where it looked to have been kinked for a long time around a section of the fairing stay.

So your bike will actually fire momentarily if the tip sensor is not engaged for a second until the ecu picks it up and shuts it down.

Thanks for the help, cheers!
Jason
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post #7 of 10 Old 01-30-17, 18:33
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Good find, well done. I'm sure you're a lot happier now as well!


To read about the transformation click > Project Trixie Transformation

For comparison photo of old R/R with new improved R/R under recall of 2012 click > R/R Comparison Photos
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post #8 of 10 Old 01-31-17, 01:45
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Quote:
Originally Posted by WAW View Post
Problem found!

I found the issue late last night after I went crazy with the multimeter.
Turned out that there was a small break in the tip sensor harness where it looked to have been kinked for a long time around a section of the fairing stay.

So your bike will actually fire momentarily if the tip sensor is not engaged for a second until the ecu picks it up and shuts it down.

Thanks for the help, cheers!
Jason
Sorry for the stupid question but what is the tip sensor?
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post #9 of 10 Old 01-31-17, 13:56
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Quote:
Originally Posted by Plasmablaster View Post
Sorry for the stupid question but what is the tip sensor?
if the bike goes down, the tip sensor shuts off the bike. many bikes have them these days. other manufacturers call them Lean Angle Sensors, but those could also be used for more things like traction control

how to mount your fairings while high (very slowly with errors)https://youtu.be/OQbHxDPLkPM
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post #10 of 10 Old 02-01-17, 01:35
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Good catch! Electrical issues/problems are my least favorite to try and sort out. I had something similar happen with my old track bike and it was hell to try to figure out.

===
2016 675R (track-only)
OPRT | NWXPDTN
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