i need help. when you turn the key on it blows ign fuse everytime.

[milleryfz450]

i have an 08' fz6 with 6500 miles on it. i went out the other day, which was sat about a week after i had last ridden the bike. i turned the key on and nothing. pulled the side panel off in the back and pulled ignition fuse out and put the spare in and as soon as you turn the key on it blows. the display does not come on besides when you press the select buttom and the time comes up. i have checked the terminals on the battery and on the relay by the battery. all of the turn signals and horn work when the key is on. it did get rained on by about an inch of rain, which it has gotten washed alot in the past and been well taken care of. any advice?

 

[Shamus McFeeley]

You have a short somewhere. Getting that wet probably did not help. Go to your local auto parts store and get some electrical connection cleaner. Spray out your fuse block and try again. If you're still blowing fuses, you're going to have to work your way back on every connector that has anything to do with the ignition circuit and spray them out.

If all that does not solve the problem, you're going to have to break out the wiring diagram from the service manual and a multi meter and start probing around.

 

[ant_mb]

You have a short somewhere. Getting that wet probably did not help. Go to your local auto parts store and get some electrical connection cleaner. Spray out your fuse block and try again. If you're still blowing fuses, you're going to have to work your way back on every connector that has anything to do with the ignition circuit and spray them out.

If all that does not solve the problem, you're going to have to break out the wiring diagram from the service manual and a multi meter and start probing around.

Im thinking that the inch of rain has nothing to do with your problem. My bike sits outside in rain and snow! it's been burried in a couple feet of snow a few times and no problems. It's a vehicle, and made to take the rigors of outside life. I'd start by checking all my connections, but don't be concerned with leaving it in the rain.

 

[Motogiro]

:welcome:to the forum!


There are a few things you might check. On the FZ6 there is a kill switch. There should be 2 wires plugged into it. Unplug the 2 wires to the kill switch and replace the blown fuse. Turn the key on. Does the fuse blow! If not there may be a short/pinched or chaffed wire from the kill switch to the ignition coils.
If it still blows the fuse you could have shorted, pinched/chaffed wire from the fuse to the ignition on switch.

If it doesn't blow the fuse when you disconnect the kill switch, trace the wire to the ignition coils. Unplug the wire that feeds the ignition coils. Plug the wires into the kill switch. If the fuse doesn't blow you may have a shorted primary winding on one of the ignition coils. I sort of doubt that and would carefully look for a shorted wires
Again welcome the forum!:rockon:

 

[Shamus McFeeley]

Im thinking that the inch of rain has nothing to do with your problem. My bike sits outside in rain and snow! it's been burried in a couple feet of snow a few times and no problems. It's a vehicle, and made to take the rigors of outside life. I'd start by checking all my connections, but don't be concerned with leaving it in the rain.

When you're troubleshooting electrical problems, you can't discount anything. Having a the best baseline keeps you from chasing your tail. While getting wet probably did not cause the problem, it sure would be a shame to waste hours probing away for a short with a multimeter only to find the the real problem was water intrusion at a cracked connector.

If you like leaving expensive equipment in the elements I suppose that is a personal choice.

Motogiros suggestion is probably spot on!

 

[FinalImpact]

Personally I'd be going straight to the schematic. Follow the fuse to all points beyond it paying close attention to mechanical items like the kill switch as Motogiro suggested. If you can unplug suspect areas and turn the key on you can isolate it A) with item X unplugged, does it still pop the fuse or B) by using a meter to test the unplugged item by using the ohms function and seeing if the HOT lead is shorted to ground.

You will find its weakness somewhere once you start looking. . .

 

[FinalImpact]

Another option with an ohm meter is to remove the fuse that blowing and insert the meter into the outbound pull (not the battery or hot side), place the other lead to ground. Get an ohm reading it will likely start at or below 10 ohms (almost a dead short). Now start unplugging suspect components until you see the ohm meter rise from it low reading to something like 50 to hundred ohms or higher.

The smaller the fuse rating the higher the ohms will be. Sorry, to tired to look it up (ignition fuse rating). If the fuel pump is part of the circuit, it could be a large fuse like 25A. But I haven't looked.

Let me know if you have questions. THis is the easiest way I can think of without damaging anything or turning the key on.

 

[milleryfz450]

i have started testing wires and put contact cleaner on the start switch and tested it and then same on the kill switch and they make and break continuity. with the key on i am getting voltage on both sides of my fuse for the ignition which seems wrong to me according to the wiring schmatic i got off of the info forum.

 

[Motogiro]

i have started testing wires and put contact cleaner on the start switch and tested it and then same on the kill switch and they make and break continuity. with the key on i am getting voltage on both sides of my fuse for the ignition which seems wrong to me according to the wiring schmatic i got off of the info forum.

Look at post #4 on this thread. I'll assume the kill switch has soldered connections and not spade connectors that you can easily remove. I don't have the FZ6 anymore so I can't go and look but maybe some other member can confirm that the Kill switch has 2 soldered leads. You have a dead short. I'm willing to bet a wire lost it's jacket and shorted, welding itself to another wire or the frame or engine somewhere. You may have a failed component with a dead short. Check all the easy stuff to check first. Look at where the wires go down through the handle bars and steering. Lift the tank and spend some time carefully examining the wires. Check the wires going from the main keyed switch.