Help Please! CBR600F4i - Switching headlight on cuts engine
Discussion
Hi,
On my ride home today the bike cut out within half a mile of the office. The high beam light came on dimly even when high beams were not on as it cut out. I found switching the headlights off completely allowed the bike to start and keep running.
I tried several times on the way home to switch the headlights on and every time it would cut the engine (it would start again fine no problem each time). I could run sidelights but not dipped headlights. I also found that the main beam light would illuminate dimly on the dash when I indicated sometimes too but it didn't cut the engine.
I'm thinking this could be an earthing problem? Any ideas what I should check?
Many thanks!
On my ride home today the bike cut out within half a mile of the office. The high beam light came on dimly even when high beams were not on as it cut out. I found switching the headlights off completely allowed the bike to start and keep running.
I tried several times on the way home to switch the headlights on and every time it would cut the engine (it would start again fine no problem each time). I could run sidelights but not dipped headlights. I also found that the main beam light would illuminate dimly on the dash when I indicated sometimes too but it didn't cut the engine.
I'm thinking this could be an earthing problem? Any ideas what I should check?
Many thanks!
I wouldn't of said its a reg/rec problem because it starts straight away after turning them off. You would probably have to wait 10 minutes or so for the battery to bump itself back up again before it would start if the regulator was killing it enough to stop the bike. Although it wouldn't hurt to check it!
Like you I would of said kind of shorting problem as its coming on with the indicators aswell, id have a look at the l/h switch first because you don't have to take the fairings off to do it! If not, its just a process of elimination.
Like you I would of said kind of shorting problem as its coming on with the indicators aswell, id have a look at the l/h switch first because you don't have to take the fairings off to do it! If not, its just a process of elimination.
mike150 said:
Sounds like you have a short in the lighting circuit, it's probably around the headstock as that's the bike of the loom that gets all the movement.
It's not something I would like to be looking for.
Good luck!
Quick way to start looking is to take the headlamp bulb out. If the light feed is shorting the fault will still be there. If it's current-drain related the bike should keep running when the light switch is put on.It's not something I would like to be looking for.
Good luck!
TBH I prefer to just get stuck in rather than trying to diagnose electrical/ electronic faults remotely. It's paid my bills since I was 17...
I spoke to my friendly local bike garage (who are fully booked until 30th..) and think we've narrowed it down to a short between the light switch/starter button and the multi plug on the end that part of the loom. Any idea where that multi plug is located?
I did check the charging circuit as a matter of course and its working fine (constant 14.7v regardless of revs)
I did check the charging circuit as a matter of course and its working fine (constant 14.7v regardless of revs)
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