I have a 05 deauville which has been blowing fuzes. The 30 amp main fuze. It’s been looked at by a shop and seemingly fixed but not. Anyone any ideas? Rectifier? Any pointers appreciated. Thanks JJH
Honda blowing fuzes
- Thread starter JJH
- Start date
Cracking flow chart that , we should make it a sticky for us owners of older non canbus bikes
I imagine there is a big flash, possibly hidden from you, when the short circuit occurs. Replace the fuse, lift the saddle so you can see what'
s going on. Turn the workshop lights off so the place is in darkness, when you switch the ignition on hopefully the flash will indicate where to start looking. Good luck
Unplug your reg/rec, replace fuse turn on. If the fuse stays intact turn off and plug the reg/rec back in. If the fuse blows it looks like the reg/rec has gone awol. There is a Mosfet FHO20aa for sale on ebay at the moment. they are the dogs dangies
Thanks for your help. Went out to garage armed with printout of flow chart and multi meter. Bike wouldn’t start. All fuses ok no lights on dash. Lights came on then off by themselves all fuses ok. Eventually got bike to turn over and start. Runs like a pig then cuts out. No lights on dash. Have a look at fuses none blown. Lights back on press starter lots of clicking from selonid. New one on way. Hopefully that will fix it. JJH
Seems unusual that it would be the solenoid, or the starter, on these, but never say never.
The usual root cause of the problem is the reg/rec as @jeffa suggests. Also make sure the battery is good - any doubts get it tested by a battery specialist. The 30A fuse holder can get corroded, but doubtless that has been checked.
When it comes to poor running, you may be aware of the usual Deauville issues - fuel pump points, PAIR valves, carb diaphragms, carb breathers. They always enjoy iridium plugs x 4.
The usual root cause of the problem is the reg/rec as @jeffa suggests. Also make sure the battery is good - any doubts get it tested by a battery specialist. The 30A fuse holder can get corroded, but doubtless that has been checked.
When it comes to poor running, you may be aware of the usual Deauville issues - fuel pump points, PAIR valves, carb diaphragms, carb breathers. They always enjoy iridium plugs x 4.
When you replace the main fuse how quickly does it blow - as soon as you turn ignition on or only when the engine is running or riding for a while?
Doubt its the reg.rec, or the solenoid.
Turn ignition on and wiggle push/pull the wiring going into the ignition switch and the ignition switch multi plug connector to see if the dash lights come on...
Doubt its the reg.rec, or the solenoid.
Turn ignition on and wiggle push/pull the wiring going into the ignition switch and the ignition switch multi plug connector to see if the dash lights come on...
It’s definitely the selonid that’s causing the power intruption. I can’t take it any further till I fix that. Hopefully that will sort it but with electrics you never know. When the power goes if you tap the selonid it comes back. On checking the fuses it was knocking the rest of the electrical bits in that area. JJH
We must of been posting together! The selenoid clicks like mad and you can feel a vibration within it. I could bypass it but their not that expensive and I’d like to keep it right. Also it’s a spare bike at the moment. JJH
It’s not blowing fuses at all. I just assumed that it was. I can’t see any loose wires and the multi meter is giving good readings until the selonid plays up. Hopefully it’s it but I need to eliminate it anyway. JJH
When we inherited the bike it came with a tag on the keys from a bike shop with blowing fuses written on it. There’s sabosed to be a new regulator on it. JJH
Wasn’t the selonid. JJH
The bikes the tease. Going out to it soon. JJH
Feck sake Come on JJ what is the story ??
P.S. NEVER depend on a voltmeter!
Always use an Incandescent lamp of some sort ! (#DiagnoseDan )
A digital meter draws very little current and can show values
An incandescent bulb needs a good supply and ground and will either not light or light dimly if one or other is bad
Sorry J I no good with electrics. I know the theory but putting it into practice isn’t great. It’s like my dislexica I start to follow a logical step by step sequence and just loose it in my head and have to start again. So I wrongly diagnosed the selonid. Sometimes the bike would start sometimes there would be no lights on dash sometimes there would. By tapping and moving the wires around that area the dash would come alive. Then the bike would run like a pig wouldn’t Rev backfire and other times would run perfectly.
So by bringing a wire from the live side of the selonid to the red wire of the 4 wires everything works perfectly. I presume I have pypassed a bad connection somewhere. JJH
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