Got the above from this post informative. Our lights go threw the ecu. Think about it the headlight won’t come on till the bike is running. Pull up the post it’s long too long to copy it all.
No headlights... not the sub harness... ECU?!?!
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JoinedOct 5, 2011Messages945Location
Western North Carolina, USA
Nov 9, 2013
Well my 2012 Super Tenere' while having been the bike of my dreams... just love this thing has perhaps taken a dump.
First of all I've got over 50,000 miles and this is the only real problem... yea I had to replace a battery just after the warranty went out (and no Yamaha wouldn't cover it) and I have had to put a second set of rear brake pads on and lots of tires (to be expected
). I also have replaced both H7 headlights... with ordinary H7's. Nothing else.
So here it is. I rode from my home in the foothills of the Blue Ridge Mountains of Western North Carolina (USA) to Orlando, Fl to work the AIMExpo a couple of weeks ago. On the ride down all on back roads I ended up getting there just after the sun set... my headlights were like non-existent as in I only had the running lights. Well I made it to my friends house. A quick check revealed that it was not a fuse and not the bulbs. I had no real way to work on it down there and we had no time to work on it as in the AM we had to get to the show. Worked the show for 5 days and during that time I did communicate with Greg as in "Greg the pole" aka The Tenerist about my "problem". Not having the bike with me at the show I was not really able to test some of Greg's suggestions to see if I did indeed have a cooked wiring sup harness. As I needed to get home I rode home on the interstate with no headlights just to be sure to get home before dark.
As I started to attempt to diagnose the problem I replaced the headlight relay... which didn't fix the problem... I ordered a new (updated Yamaha P/N) sub harness... which didn't fix the problem. So last night with some help from a friend who is a MC mechanic we traced it back to the
ECU.... YES, the $817,17 ECU!!! :-[ It seems that the headlight relay gets it's ground from the ECU... well it's supposed to but my ECU doesn't seem to be providing this ground to activate the relay. we tested everything from the ECU to the bulbs and all is OK there.
So I need/want to do one thing that I didn't do last night... hook the ECU back up and the relay and plug in the headlights... start the bike and then provide the ground to the relay to see if all works that way. I feel strongly that it will work and that I'll still be left with an ECU that's not working properly.
NOW some additional questions:
1) no warranty... ::024:
only time in my life I'm thinking I should have gotten the extended waranty!) what's the chances that Yamaha will step up to make this right?
2) can the ECU be A) checked to see it all else is working properly? B) can the ECU be re flashed and thus fixed?
3) Can the ECU be fixed? (reprogrammed?)
Ok... once those questions are answered... I will most likely hook up another relay, likely through my FZ1 (fuse box) to provide the ground the headlights need after the bike starts to light the headlights and live with it.
I was planning a ride out to CA and to ride Baja, Mexico again in February... would you
trust this bike with the fix around the ECU?
This sucks! :'( :'( :'( Damn, I wanna ride this bike... while at the AIMExpo I bought new Trax bags in black and Denali D2 lights for it too...
'14 ES Yamaha Super Tenere'
'99 SV-650
'15 FJ-09
www.ridemsta.com
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