Question

[John]

that first wire looked like the brake switch relay trip... I really couldnt deciper the rest so take it to someone if i was closer I'd give ye a hand.

[Magua]

Ok, looking for offers of help. 6 weeks until I go back to full time work and I'd rather have the bike going sooner than later.

Renegade, come get your multimeter.

[Ixion]

OK. This may not be totally correct. It's sort of generic Yamaha, cos I can't find much info on the FXR250. But the small Yammies seem to be fairly similar so I think it will be reasonably close.

I suspect your igniton switch is fucked. That will kill all power to everything.

Its easy to check. Take the tank off. Now squizz up under the fairing at where the underneath of your ignition switch is. Coming out under the ignition switch will be a bunch of wires wrapped in black plastic (or in a black plastic tube). Wiggle it a bit and follow where it goes round the steering head. It will end up in a white square plug thing under the tank.The wires from the ignition switch will be connected into one half of the plug, the other half will be connected to the main wiring loom.Probably with 4 "prongs" inside the plug.

One of the wires will be red , one brown, one blue - and maybe a blue and white one.

The important ones are the brown and red ones. Should be a brown wire and a red wire on each side of the plug.

Get a bit of wire. Bare the ends . Connect one bare end to the EARTH terminal (black wire) of the battery . Call this wire A. Get another shorter length , wire B. Bare both ends. Get a light bulb, 12V - make sure it's a good one. Hold one terminal of the light bulb against the battery non-earth terminal (the one with the red wire). Hold the free end of wire A against the other bulb terminal. The bulb should light up . This is just to test the battery and bulb.

Now. Pull the two parts of that square plug apart (there's a little clip holds it together). Now , take the half of the square plug above that does NOT go to the ignition switch. The half that is connected into the main loom. There should be a brown wire and a red wire attached to it (maybe others also)

Take the shorter length of wire , wire B. Poke one end into the plug above where the RED wire is attached , so it contacts the copper bits in the plug. Poke the other end of wire B into the plug above where the BROWN wire is attached . Do you now have neutral light on (check it's in neutral), indicators work etc. If you do try the starter button. If these all work, you're ignition switch is rooted you need another one.

If stuff doesn't work when you do this, take the long wire, wire A. Hold the free , bared end against one contact of the light bulb. Leave one end of wire B poked into the plug , above the RED wire. Hold the other end of wire B (take it out of the plug, it was poked in above the brown wire) against the other contact of the light bulb.

No light, your main fuse is gone, or you have a wire broken.

If the bulb DOES light, your main fuse is OK, your ignition switch is OK. You have a defective sidestand switch, oil pressure switch kill switch, or a broken wire. If you get to this point post the results here and we'll move to the next stage.

[Magua]

Been going over the whole top half of the bike with a multimeter and OMFG I'M CONFUSED........and i'm not even doing the work. More to come later.

[Ixion]

Been going over the whole top half of the bike with a multimeter and OMFG I'M CONFUSED........and i'm not even doing the work. More to come later.

If you have a multimeter just check for voltage between the red wire that I mentioned in my oher post (the one where the plug goes into the loom). And turn the key on and check that there is continuity between the brown and red wires that go to the ignition switch (the other half of that plug). If both of those test out OK (voltage on teh red wire, and continuity between red and balck on the switch ) it's one of the protective circuits - sidestand , clutch , oil pressure . You'll need to test/disable them one by one

[Magua]

Resistance on the ignition part of the circuit
When key is off | When Key is on
RED and BROWN = infinite resistance | No resistance
Blue and Blue/red = infinite resitance | No resistance


Resistances on the ingitionc onnector (battery is disconnected)
RED AND BROWN = around 28000/30000 (Starter motor or something maybe)
Blue and Blue/red = Zero or very small

Posted by friend.

[Ixion]

Resistance on the ignition part of the circuit
When key is off | When Key is on
RED and BROWN = infinite resistance | No resistance
Blue and Blue/red = infinite resitance | No resistance

OK. Sounds like the ignition switch Is OK. With battery connected is tehre voltage between earth and the red wire on the ignition circuit (use the DC volatge setting of the nmeter , on test lead on earth (make sure it is earthy, motor is not always) and other on the wire connction.

If there is it's time to look at the isolator relay

If my info is correct (it's actually for a FZR400) there's an isolator relay after teh ignition switch. Feeds to therelay are from the various safety switches. You need to find this. It'll have a red/white , a blue/yellow, a black, and a black/white wire coming into it. Check that you have voltage (ignition on, kill switch to run) on teh red white wire. If that's OK check for connectionbetween the blue and yellow wire and earth (connetivity = bad, safety ciruit switch stuck) ; and connectivity beteen the black/white wire and the black wire (should not be , also indicates stuck safety switch) . ry disconnecting the red/white wire from this.

[FROSTY:Me]

mate ive skipped through the thread but that red wire at the start--its the power wire for the bike--the other end of it looks like its tucked away beside the battery.Plug it in and the bike will go
actually one thing to try-trace the thick red wire from the battery down to where it ends -itll end in a round pot thing with two brass looking bolts sticking out of it.On the side of it you may find a small fuse holder--check that fuse.As part of the elimination process take a big screwdriver and lay it across the two brass bolts.--make certain the bike is in neutral before ya do
can ya get the little rat bike to my place in massey?
gimme a yell if ya can --0210354615

[eliot-ness]

On the first pic showing the loose red wire. Above and left of that wire is a connector block with tape around it. Take off the tape and you may find the other half of your missing connection.

[Magua]

As part of the elimination process take a big screwdriver and lay it across the two brass bolts.--make certain the bike is in neutral before ya do
can ya get the little rat bike to my place in massey?
gimme a yell if ya can --0210354615

Praise Allah it turned over!

I placed a screwdriver over those two bolts, a few sparks and the bike turned over! So what does this mean? The thingy in question is screwed?

[Indiana_Jones]

Praise Allah it turned over!

*insert a Somalian war 'ahlalalalalala' in here*
*Ak's fire into the air*

-Indy

[Ixion]

Praise Allah it turned over!

I placed a screwdriver over those two bolts, a few sparks and the bike turned over! So what does this mean? The thingy in question is screwed?

It means your starter motor works. You connected the starter direct to the battery, bypassing all the other electrics on the bike .Trouble is that you have no ignition power (or starter relay power)

[FROSTY:Me]

It means your starter motor works. You connected the starter direct to the battery, bypassing all the other electrics on the bike .Trouble is that you have no ignition power (or starter relay power)

It proves bike aint seized as well.
Ok guts is ya aint gettin power to the bike but there is power available.
have ya tried tracing the wires from the bottom of the .....
Ahh shit this typing BS takes longer than friggin fixing the thing--get it to my place and ill sort it out.
take the fairing and sidecovers off and leave the seat with it

[Ixion]

It proves bike aint seized as well.
Ok guts is ya aint gettin power to the bike but there is power available.
have ya tried tracing the wires from the bottom of the .....
Ahh shit this typing BS takes longer than friggin fixing the thing--get it to my place and ill sort it out.
take the fairing and sidecovers off and leave the seat with it

True. And that the battery is not stuffed,a nd that the battery is earthed . All good stuff. I suspect (new suspicion) one of those stupid flipping safety switchs. Sidestand maybe?

[FROSTY:Me]

True. And that the battery is not stuffed,a nd that the battery is earthed . All good stuff. I suspect (new suspicion) one of those stupid flipping safety switchs. Sidestand maybe?

nope matey --no juice at all remember-Its a broken or unplugged wire in the ignition line somewhere -ignition switch or battery lead--shouldnt take a shit load of figuring out.