Honda CBR 600RR Forum banner

1 - 14 of 14 Posts

·
Registered
Joined
·
10 Posts
Discussion Starter #1
Alright so to start I have a 2004 CBR600RR 16K miles. It has never been down and is well maintained. Alright to the problem. My headlights started acting weird a few weeks ago. I start the bike and my headlights both work for about 10 seconds or so and then they shut off. It did that about 95% of the time. The other times it would either work or it wouldn't. So I figure it has to be the headlight relay. So I replaced the relay. Same problem. Now I believe the problem is within the starter switch. If I turn the key on (with the kill switch in the off) and the low beam isn't on, I can push the starter button and the headlight will come on. I have searched the forums, my service manual, and parts diagram and I can't figure out how to get the switch assembly apart or what it looks like inside. I know there are the two screw in the bottom but other than that I'm clueless. Any advice, pictures, or diagrams to help me solve this problem would be awesome.

Thanks, Jordan
 

·
Premium Member
Joined
·
14,330 Posts
Maybe a bad headlight switch. Strange. Any body work install, removal? Something pinched. I would start with the switch. Get the cover off and you can meter power from there and see where the bad spot is. T
 

·
Registered
Joined
·
2,120 Posts
First, a new (or at least new to you) one is cheap on ebay. Like $10 or so I'm guessing. If you want to fix the one you have, Your manual has a wiring diagram and shows the switches inside the assembly. (this won't show you how to put it together)

The starter button actually turns off the lights when you start the bike. I don't know how much you know about electrical but the switch has really 2 switches inside, A NO (normally open) and an NC (normally closed)

With the switch in the normal position(your thumb not pushing it) the switch for the headlights is the NC one(normally closed...complete circuit...lights on) and the starter is the NO one. So your lights should be on and starter not not cranking.

When you push the start button and they both change. The NC switch to the headlight will be open and the lights will turn off, the NO switch to the starter will be closed and the starter will be cranking.

Let off the switch and everything goes back to normal... lights on and starter not cranking. Look at your manual and maybe this will make more sence. (wiring diagram part)

Sorry, I just realized that the switch and throttle are one on this bike so maybe more than $10 for a new one. ?
 

·
Registered
Joined
·
10 Posts
Discussion Starter #4
It's not the headlight switch because when the lights do come on the switch works just fine. And I haven't done any body work on it in quite some time so I doubt it is a pinched wire. I understand how the starter switch works electronically/mechanically I was just curious if anybody had some pictures or advice on how to take the the switch assembly apart. I took the two screws in the bottom out but it seems like there is something inside that is holding the assembly from coming apart the rest of the way. I'm sure that there is nothing I can do to fix the switch and should just buy a new one but the parts websites will only sell the entire switch assembly for $50 and change. Didn't know if somebody had found a way to fix their switch before buying a new one. Thanks for all the replys, I appreciate the help.

Thanks, Jordan.
 

·
Registered
Joined
·
2,120 Posts
I was only talking about the start button, not the headlight switch.

I don't think the kill/start switches come in half. I think you have to take the throttle off and then slide the switches off.
 

·
Registered
Joined
·
10 Posts
Discussion Starter #6
Thanks dcope. The other guy was talking about the headlight switch. But I'll take a better look at it, your probably right.
 

·
Administrator
Joined
·
51,151 Posts
Check the bulb adaptors ( black part that is between the connector and the bulb itself) for signs of electrical shortage ( white spots ) that is common to happen even if u are using 55 w bulbs
 

·
Administrator
Joined
·
51,151 Posts
I think I found the solution. Thanks for all the help people.
Awesome man please share the solution
this is how we gain exp and knowledge
thanks man :five:
 

·
Registered
Joined
·
10 Posts
Discussion Starter #10
Turns out it was the starter switch. Unfortunately on the 04 the throttle cables are inside the switch housing making replacement a real pain. Should have bought an 05 (throttle cables were moved outside the next year). Thanks again.
 

·
Administrator
Joined
·
51,151 Posts
JZ
Thanks for the update man glad you got it all worked out
 

·
Registered
Joined
·
323 Posts
Turns out it was the starter switch. Unfortunately on the 04 the throttle cables are inside the switch housing making replacement a real pain. Should have bought an 05 (throttle cables were moved outside the next year). Thanks again.
What exactly was it with the starter switch. I know that that particular switch has two parts a base and a contactor that can come apart but that would also cause your bike not to start. If you take the switch housing apart you can see if the starter switch contactor is just sitting in there or maybe cocked. you should be able to snap these two pieces back together. You'll have to remove the wire routing plate from the bottom part of the switch housing to do this. it's only one screw but easily done.
Just a correction to your post. the 05/06's also have the throttle cable installed inside the starter switch pod. they didn't change that until the 07+'s.

I have a post on here in the troubleshooting thread that shows the two parts of the switch and how they go together. Check it out if you need some further assistance.
 

·
Registered
Joined
·
227 Posts
Op the same thing was happening to me i opened the switch to see if anything was loose and it wasnt so i put it back together and it hasnt happened im guessing something may have been pinched in my case tho.
 

·
Registered
Joined
·
15 Posts
Just to add to this problem. I had something similar happen except i lost all my lights except when using the pass switch (Aus delivered). Turned out to be the black with red dash's wire (incoming power) to the starter switch (headlight part of switch), lifted off the solder pad. Im guessing it got too hot and wasnt the best joint to begin with.

The solder left on the pad was smooth and shiny, so it didnt look like it snapped off from vibration or anything but actually from reaching melting point. There is also other signs of excessive heat damage in there as the wire that layed over the one in question had a brown burn mark on it where it was making contact.

So much for fuses protecting wiring hey?
 
1 - 14 of 14 Posts
Top