97 F3 wont crank
 

Hi everyone , i need some help and advice

i got a 97 F3 that I recently got the bike needed the carbs cleaned and that went well did the carbs bike started well and all rode it around the block and put the bike away again, I also threw on a 05 R6 tail on and seats and that went well to.

Now the problem is I got it registered today and got the tags on but the bike wouldnt crank, I figured the battery was low so I hooked up the jumper cables to my car.. Still no crank.. I tried atteching the 2 wires from the clutch to by pass it but still same crap, what i did notice is that when i hit the start button the lights on cluster shut of and the headlight shuts of completely not dime but OFF completely, I found that funny but again maybe its setup like that to send all the juice to the starter?

I tried w the kickstand up in neutral and in gear and w kick stand down... all the same..

Now tomorrow I wana test a few things like the kill switch , kick stand switch, and starter relay, and advice on how to do this the correct way I dont want to make a short somewhere

Also where is the main fuse?

and advice would be great..

BTW I have a streetfighter mask which I did take off to fix my light bulb but i pluged everything back...

Thanks in advance

Your jumpers are not making a good connection. Wiggle them. Also running a CBR with a low or crappy battery can kill the rectifier.

I did wiggle them and made sure they are touching the terminals fully..

im going to check all the fuses tomorrow and go from there.. Might get a new battery just to try it...

Any write ups on how to jump the starter relay? or the kill switch?

Got a wiring diagram handy? Find the 12v wire from starter button running to solenoid. Check it for voltage when button is pushed. You could also jump it "old school" and just connect 2 large connections at solenoid.

+1 oldschool.

can you guys expalin a little on the old school jump? is connecting 12V directly yo the starter? Thanks alot guys

Also i dont have a wiring diagram handy ... I dont even know the exact locations of the starter relay and the main fuse and crap... I been on google on searching the forums seems like its under the seat on left side

Your solenoid has 2 large connections on top of it. One lead goes to + side of battery, the other runs to your starter. By "jumping" these connections, you're sending voltage straight to starter. Not something you want to do alot of though, as it will melt the connections from arcing. The solenoid is easy to find...just follow the positive cable from your battery and it'll lead you to it. There should be from 2 to 4 smaller wires going to it also. One will either be green or have green in it, that's the ground. One should have constant 12 volts, and somewhere in there will be one that won't show voltage until you hit starter button. By main fuse, if you mean the one at the solenoid, if it was out you wouldn't have power to anything.

thank you for the replays guys,

That's what I figured it was by jumping it I remeber we did it on y friend 73 dart and started to melt after 30 second

Back to the bike I went and got a new battery just to have a clear mind ,
Still same thing no crank checked all the fuses and fuse on starter relay and all is good.. Checked the kick stand indeicator it works on and off when u lift and frop the kickstand
Now I tried jumping the 2 terminals by relay w neddle nose pliers after some sparks it cranks and cranks did few short tries... No start
Now I don't hear the fuel pump priming soo probably not starting for that reaon when jumping it,

On the relay there's 4 wires going to it solid red (has power) red w white stripe (has power) yellow w red stripe (no power even when I press the start button) and there's the green wire w brn stripe ( ground)

I'm thining it might be the kill switch..

I also checked if fuel pump was getting power and nothing w the ignition on or when I press start button ..

Any way to jump the kill siwtch?
Also does the kill switch shut of the fuel pump?
Thanks everyone
_

Gotta have that dang diagram. On some CBR models fuel pump uses a relay triggered by neg. coil wires so it only pumps when engine is cranking.

Am going to search on the web when I get home for a diagram.. Am on my blackberry and its a pain in the butt to typr and navigate on the web..

its dark out ill see tomorrow if I can attack some other parts.. Maybe open the switch and commect the kill switch directly..

I was tring to trace where the kill switch clabe goes to it goes under the air box and I lost it there and its getting dark out.. Any idea where it connects to?

Like I said, can't really remember the F3 particularly but have worked on a few. They should be wired just like the 900RR. If you mean the start/stop switch, it has nothing to do with engine cranking over. It just kills the 12volts running to the coils and ecu. Do you have a test light with sharp point? If so, check for voltage at starter switch (on the RR, it's black/red). You said the solenoid wasn't getting power with starter button pushed so that will tell you if it's the button or possible blown fuse. You should also check ground wire going to solenoid. If it's showing ground, that eliminates clutch switch and sidestand switch. If it's not grounded, remove small bit of insulation from wire and run jumper wire to frame. If it cranks with starter button, good chance it's clutch switch or sidestand switch.

I found a nice wiring diagram that I wanted to post here so it could help other when needed .. Its in pdf format any idea how to post it as attechment?

If you think you got problems right now, wait until you short something out!
Be careful, as you can destroy what you do not understand.

Procrastinator thank you for the link...

i downloaded the manuel and went to work...

1.I checked the Engine stop switch = good
2. checked starter switch = good
3. checked kickstand switch= good

now the fuel pump isnt getting any power since i dont hear it prime i also hooked up a meter to see if any power was coming and was nothing..

I hooked up 12v to the pump and it work at same time i jumped the starter relay and cranked to see if it would start ...But it didnt soo probably no spart either..

Now im starting to think it might be the ECU?

Im going to take it to the shop on monday if I cant figure it out :icon_doh:

I can walk you through the tests to get right to the problem.
Please don't poke or cut any wires. (Just makes more problems)
Please get a volt meter and tell me when you are ready.

Thanks for taking your time to help out

I didnt cut or poke any wires

I got a volt meter ready..

Sorry for the slow response.
I was out doing the whole Father's Day thing.

I am going to go through the basic test, using my bike as a guinea pig. http://t3.gstatic.com/images?q=tbn:j...guinea-pig.jpg

Please do the same test in the same order and write down each result.

TEST 1: What is your battery voltage? (Mine is 12.89V)

TEST 2: What is your battery voltage with the key on? (Mine is 12.23V)

TEST 3: What is your battery voltage when you try and crank the engine? (Mine is over 12V)

TEST4: With the key off, what is the voltage at the solenoid's red and red/white wires. Probe the connector, don't poke any wires! (Mine is 12.89 at both)

TEST 5: Put the bike in N, turn on key, put your red volt meter probe to the yellow solenoid wire terminal and put your black volt meter probe to the positive (Red) side of battery and note the voltage. (Mine is -11.9V).

Test 6: Put your bike in 1st gear and the key on, put your red volt meter probe to the green solenoid wire terminal and put your black volt meter probe to the negative (Black) side of battery. With the motor run switch ON, push the starter button in and note the voltage. (Mine is -11.9V).

PLEASE POST YOUR RESULTS SOON,as I must put my bike back together once we figure this out.

Procrastinator sorry for responding so late I ended up going to grab dinner with family for fathers day also...

The bike is over my friends house and Im unable to test it untill tomorrow.

Sorry for keeping you from putting your bike back together but I will test these steps tomorrow after 3pm when I get out of work. Thank you again

OK, no prob.
Let me know your results and we will have a firm path to the problem.

You said starter switch is working. Are you now getting voltage to the solenoid when you push button? If so, then there's a problem with your ground. And using sharp point of a test light will not harm your wiring in any way. That's why there is a sharp point on it. Don't confuse that with dull point found on most VOM's. Testing at a connection is better, but when that's not feasible, using the point to check a wire is common practice.
Like I mentioned before, if your fuel pump uses a relay, it works off negative coil wires (blue/yellow, yellow/blue) and won't run until bike is cranking over. Solenoid needs 2 things to work...power and a ground. If you're getting power to it from starter button, then it's missing ground somewhere.

Test 1: battery voltage 12.53v

Test 2: Voltage with key on position 12.44 (headlight diconected)

Test 3: Voltage when trying to crank 12.44V

Test 4: with key off voltage at the solenoid's red and red/white wires 12.52V

Test 5: I get -12.22

****Test 6: volatge goes from 0.064V to 0.004V w start switch pressed. there seems to be a problem here I guess since we getting different readings.

Sorry for the late delay I couldnt really work at my friends house since they were having bbqa and family activities I ended taking the bike w a van to my house where I can spend more time and trace the problem , Thank you all

cbr900Racer I tought ther switch worked but now am all confused..:icon_doh:

The starter relay has 4 wires going to it 1st Green/red ( ground) which is good I tested it following the manuel I down loaded..
2nd is red/white which is + 12v , 3rd red which is +12v also, Then yellow/ red stripe that comes from the starter switch.

The yellow/ red wire i dont get power to it even when i press the start switch... I put 12v to this wire yellow/red stripe and bike turned over but didnt start. I didnt try for to long.

I also found a problem here when I tried to test Starter Relay Voltage from the manuel section 17.9
It says to shift transsmision to neutral, measure voltage between yellow/red (+) wire and ground at the starter relay switch connector.

If batter voltage appears only when starter switch is pressed with ignition switch ON, its normal.. But I get no volatage change when I press start button

Finally got my hands on a diagram that I could download. Check for voltage at fuse. It's the 10A next to a 15 that isn't on the end (hopefully it's marked on fusebox cover). It feeds black wire going to starter button housing. If it has power, you must be missing a ground going to solenoid. Other than solenoid being shot, that's the only things it could be.

I checked those fused they all good, and that black wire has power going to the switch.

looking at the diagram the yellow/red wire coming out the starter switch should have power when start button pressed and it dose not.

I checked the green and red wire on the starter relay/solenoid and its good ground..

I think it might be the starter switch.. because when i put power to the yellow/red wire the bike cranks

Attachment 55006

According to the diagram above which is from 600RR model but still the same principal i guess... Once the start button is press the black + wire connects to the Y/R wire that goes to the starter relay that I dont get power to... soo must be the switch

I think your right.
Given what you tested so far, it looks to be in your started switch or wiring.

Vigorously toggle the "OFF/RUN" switch.
With the bike in N kick stand up, key on, Run switch on, clutch pulled in (Covering everything at once), press the start button (Wiggle your finger while pushing it in hard).
If it is just corroded, it may crank and if so, you may be able to take it apart and clean it.

Thanks man I needed that little inspiration there lol hopefully we can get to bottom of this

After spending 3hrs in the garage with the wiring diagram i finally fixed the bike...

1st of all I want to say thank you to Procrastinator, cbr900racer77, and others who helped me track this problem and trouble shoot it.. it was really nice of you guys...

Now i opended the starter switch and noticed that there was no power coming to the stop start switch...which feeds power to the start push botton switch... according to diagram theres suppose to be 12v when key turned to on postion to the stop start switch... traced that wire (opened up hraness) and about 2 inches away from a realy in front by headlight i think its the air vent control relay... the black wire power wire was broken... someone cut and tied this wire before i bought the bike for some reason... i hooked up the wire and BAMMM the stop start switch got 12v . I hit start button bike fired right up....

I did end up breaking the start stop switch unit.. the clip inside broke .. i will find one online some where..


Next is fork seals :icon_wink:

Cool, glad you found it! Electrical troubleshooting can be a b!tch sometimes. Usually all it takes is a good diagram, pack of smokes (if you smoke like me) and a couple of hours. Just be glad it wasn't a short...then you'd really be cussing. You'll find the fork seals are alot easier than electrical gremlins LOL.

Fortunately found this post... righ now i have the exact same problem with same simptoms on my 1990 hurricane. The difference is i don´t have 12v leading to the CDI also.

Here´s is my actual post https://cbrforum.com/forum/general-tech-9/fried-ecu-122014/

Hope someone can help me too.

Hello my name's Charlie and I'm having a problem with my 98 cbr 600 f3 I cleaned the carbs and everything ran great after installing them with new plugs also but I 4got to put a bolt in the gas tank lid when cleaning old gas out from sitting and water got into my tank and ran it not realizing it and it got into my system so tried water remover and cranked and cranked with no luck so I pulled the tank and fuel lines and got any and all I could out and got a better grade gas just in case any water was still in it and after cranking and cranking and jump starting cus all the cranking drained my battery a couple times but finally started only to now not stast at all after riding for half-hour trying to get any water left out and went home turned off now won't start I changed plugs again checked fuel pump starter relay even put new coils in it and a brand new battery and it will crank but even with the new battery which tested good it doesn't seem to be cranking like it should almost like the battery is dead so I tested the rectifier and a diode wasn't registered on my multimeter so got another used one which registered but still cranks like it's not getting enough power so bought a jumper box and still nothing even after getting the battery fully charged. Any helps greatly appreciated.