2009 REPSOL - headlight cuts out sometimes : Honda CBR 1000RR Motorcycle Forums: 1000RR.net

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Old 03-10-2012, 08:16 AM   #1
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2009 REPSOL - headlight cuts out sometimes

Just interested if anyone else has seen this. My headlight was cutting out entirely. Then I switch to lo beam, and it comes back on for awhile, then it will cut off again after maybe a minute or two, then I switch back to hi beam, and it comes back on and then maybe after awhile, cuts out again?!?? This was happening last year during the winter.

My mechanic told me "headlight relay", and my other mechanic told me to always check the common first. So I will do both of these. (Although I am not sure how to troubleshoot the relay. It might be too hard for me to figure out, even with a svc manual and a multi-meter. But I might try.)

Also it was very cold when these failures were happening. Maybe that has something to do with it. I have been riding a lot over the last few weeks, and while cold, it's not bitter. It is not as dark anymore on my way home from work, but I can see a reflection in other vehicles and I don't believe my illumination has been doing its disappearing act. Strange.
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Old 03-10-2012, 09:24 AM   #2
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id first take off cowl and check all connactions.
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Old 04-09-2012, 10:29 PM   #3
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First take off the cowl

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Originally Posted by gary barnes View Post
id first take off cowl and check all connactions.
Funny, and I was just reading how much FUN it is to eff around with removing/replacing plastic parts on the '08-'11 CBRs. Ha! And I have personal experience as well. BLEH!!
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Old 04-09-2012, 11:49 PM   #4
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Quote:
Originally Posted by Hardcore View Post
Funny, and I was just reading how much FUN it is to eff around with removing/replacing plastic parts on the '08-'11 CBRs. Ha! And I have personal experience as well. BLEH!!
sucks balls to work on these things.. but fun in a torture kinda way. be careful, as i'm sure you know, that front breaks easy!!!
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Old 04-10-2012, 08:11 AM   #5
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As an electronics tech i would go with the relay as well. reason being is that its an actual moving part, and they go first as they wear out the most, even if its a fairly new part. you can take it out and run power through it with a load on it and wait to see if it cuts out after a little while..if they heat up then the contacts open, killing the circuit. or easst way would to just swap the relay out and run it that way, if it dont cut out no more then you know, and it save you from having to tear the whole thing apart. I dont think its a bad ground/common because that would work intermittently and not matter if you switch from hi to lo, more over it would just cut out from vibration or bumps in the road.
So go with the relay man.
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Old 04-11-2012, 06:38 PM   #6
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Just to double check, you're not running a HID, correct? I've seen issues where they will turn off after a while if the Ballast is bad- they refire just fine, but can cut out again.

Assuming it's not, I'd take a close look at the relay and the grounding. Testing the relay could be a pain since it's intermittent (if it tests good- how do you know it's good?). Considering the fun of pulling fairings, see if it's cheap and just change it..
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Old 09-09-2012, 08:06 AM   #7
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Thanks for the electrical input

I appreciate your thoughts. Wouldn't you know, I went through the hassle, and I do mean hassle, of getting the nose entirely apart the other day, basically for nothing.

Now if I was a SMART GUY, I would have ordered that relay months ago, when I was first clued in that it might be a faulty relay. But noooooooo, I take the whole f*^%$ing thing apart, spray WD40 into the connections, look at the wires, and just re-assemble. I had the silly relay in my hand, out of it's case and all, and nothing to replace it with! Ha! Crazy me.

And I took the switch housing apart on the left clip-on and had a look in there as well.

So I did order it yesterday from my local dealer, and they're shipping to my door for $5 postage. HondaPartsNation.com wants $20 bucks to ship this $6 part. Sorry, HOMEY DON'T PLAY THAT. But I did get the part number from HondaNation, and that always helps.

Yes, testing is very easy, according to the service manual, but next time I go to NAPA I have to remember to buy alligator clips for these simple "apply power from battery" kind of tests. But like you say, just because it tests good, what does that mean really? So of course, given the cost, I opt to replace... (Cost in loss of sanity from every single disassembly step being an exercise in extreme patience not calculated.)

And no, I do not have the HID kit.
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Old 09-09-2012, 12:58 PM   #8
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Repsol

I thought for sure your Repsol decals weren't grounded properly.
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Old 09-09-2012, 08:50 PM   #9
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joke

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I thought for sure your Repsol decals weren't grounded properly.
When funny meets stupid, you always get a LOL from me.n Oh, and Rendgrish... that pink pocketbike looks like it's getting away from you.
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Old 12-06-2012, 11:18 AM   #10
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New HL relay seems to have fixed it

Been riding for months now after reassembly with a new relay and it doesn't cut out anymore. So that was it.

Pulled the vaccuum canister out while I was doing the relay replacement anyway.

But can I just whine a little more????? - even getting the relay out of it's little encasement takes some thought and patience. I had to wedge on old piece of zip tie to hold the plastic catch open on the one side while lightly prying up the other side with a tiny flat-blade sdriver. Does it REALLY have to be held in with two simultaneous clips that require TWO people to release it?? Sheesh. Not Easy - EVERRRR!!

We----eeeeee! Are never, ever, ever, ever - get'n it back togetherrrrrrrrr.
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