CBR250 Forums banner

1 - 20 of 22 Posts
S

·
Guest
Joined
·
0 Posts
Discussion Starter #1
For those that have never experience one of my technical riddles it's basically something that I have come across that was out of the norm and I had to use
some clever diagnostic work to solve it. Let's see how you go with some clues.

The bike is a Yamaha R1 2007. It has some after market pipes on it and the ex up valve has been disconnected at some stage.

The bike has been recently repaired after a crash.

The owner has been having some over heating issues and starting issues. He feels that the bike isn't really that hot, so he's not sure what to do.

He had at a bike shop for nearly 2 months and they couldn't work out the issues.

Took it to another shop and they replaced the fuel pump and some wiring.

It randomly decides to not start now and then.

Anyway he rides down to Wollongong with a few friends to pick up a customers bike.

He went to start. Nothing. It would wind over fast enough, but it wouldn't fire up.

I spoke to another mechanic and he suggested to reset the computer by disconnecting the battery.

I was going to that anyway and I was hoping for an easy answer.

Now, we were getting 2 codes error 1 and 3.

Something to do with the thermo fan or temperature reading.

I'll add more info as you guys ask.
 

·
Registered
Joined
·
9,703 Posts
I don't have my Yam manuals here. You don't mean 13 by 1 and 3 do you..? 13 is "exup not functioning" on the r6 and from memory the same on the R1.

We had big issues getting the EXUP elim to work on leigh's R1.

I'm going with diag mode for cranking and not starting.

What's the CEL doing?
 

·
Registered
Joined
·
9,703 Posts
Check Engine Light.
 

·
Registered
Joined
·
1,303 Posts
studricho said:
The bike is a Yamaha R1 2007. It has some after market pipes on it and the ex up valve has been disconnected at some stage.
so when you say that the value has been disconnected, do you mean that the cables that control the valve at the exhaust been disconnected or do you mean then servo motor that controls the valve has been disconnected??

if its anything like the hondas, you just disconnect the cables to the valve, but leave the servo motor plugged in, tricking the ECU that the motor/valve is still functioning correctly.
 

·
Registered
Joined
·
9,703 Posts
isRR said:
studricho said:
The bike is a Yamaha R1 2007. It has some after market pipes on it and the ex up valve has been disconnected at some stage.
so when you say that the value has been disconnected, do you mean that the cables that control the valve at the exhaust been disconnected or do you mean then servo motor that controls the valve has been disconnected??

if its anything like the hondas, you just disconnect the cables to the valve, but leave the servo motor plugged in, tricking the ECU that the motor/valve is still functioning correctly.
You can do that, or graves sell a plug for $80, or you can build an elim. There's a stack of guides on the R1 forum, only one of them works.

My theory is that there's no point half doing the job, my guess would be that if it's relevant to the diagnoses that they ditched the whole servo motor?
 
S

·
Guest
Joined
·
0 Posts
Discussion Starter #7
To be honest I wasn't really concerned with the check engine light or even the manual when I was trying to solve this issue and neither one of them helped me find the fault.

You may be right as to the code being 13 as I didn't even get a chance to read the manual as I was trying to get to the issue pronto and I had an idea what it was.

There was however a Hi temp light on dash and even after the computer was reseted (disconnect battery it didn't dissapear.
 

·
Registered
Joined
·
1,303 Posts
richo said:
You can do that, or graves sell a plug for $80, or you can build an elim. There's a stack of guides on the R1 forum, only one of them works.
$80??

I built mine from $6 worth of parts from Jaycar and 10 mins of soldering to a basic board and all housed in a nice 20mmx10x5 black electrical box.

could there be a market for these?
 
S

·
Guest
Joined
·
0 Posts
Discussion Starter #9
Getting back to topic.

Yes, it was just the cables disconnected and the servo motor still moves and does it's jiggle upon key on.
 

·
Registered
Joined
·
77 Posts
If you're indeed getting FAULT code 13 then:

Error code 13

Intake air pressure: Open or short circuit detected.

Probable cause of malfunction:

• Open or short circuit in wire harness.
• Defective intake air pressure sensor.
• Malfunction in ECU.

Also,

The coolant temp sensor is located behind the throttle bodies, directly below the fuel rail between cylinders 1 and 2. If the overtemp light is on as soon as the key is turned to the "on" position then it's most likely not connected or defective.

If you're getting ER-1 and ER-3 coming up then either the connection to the ECU is toast, or the ECU itself is toast.

HTH.

P.S. @ Richo: Code 17 is the EXUP. n00b.
 

·
Registered
Joined
·
10,965 Posts
sounds like the wires for the YESS (i think thats what its called.. yammy version of the HISS) are shorting out. they run under the LHS ram air intake. Heard of this happening where they short out and give a false HI TEMP reading even when the bike is cold. on the dash preventing the bike from starting. I would start there cos this has all the warning signs. bike wont start if ECU reads the hi temp warning signal
 

·
Registered
Joined
·
77 Posts
Heh, I repaired those same wires on mine a little while ago, although I just happened to stumble across the exposed wiring while changing the LHS switch gear. Could definitely the OP's problem.

I never got any hi temp displays, but the bike did stall a couple of times at a set of lights. Assumed it was the immobliser shorting out to the frame.
 

·
Registered
Joined
·
2,896 Posts
isRR said:
richo said:
You can do that, or graves sell a plug for $80, or you can build an elim. There's a stack of guides on the R1 forum, only one of them works.
$80??

I built mine from $6 worth of parts from Jaycar and 10 mins of soldering to a basic board and all housed in a nice 20mmx10x5 black electrical box.

could there be a market for these?
I would buy one from you.
Seriously
 

·
Registered
Joined
·
9,703 Posts
dayeve said:
isRR said:
richo said:
You can do that, or graves sell a plug for $80, or you can build an elim. There's a stack of guides on the R1 forum, only one of them works.
$80??

I built mine from $6 worth of parts from Jaycar and 10 mins of soldering to a basic board and all housed in a nice 20mmx10x5 black electrical box.

could there be a market for these?
I would buy one from you.
Seriously
Dayeve: You need one? If the 05 is the same as the 08 I've built one, can knock it up for you.
 
S

·
Guest
Joined
·
0 Posts
Discussion Starter #16
Cerberus said:
sounds like the wires for the YESS (i think thats what its called.. yammy version of the HISS) are shorting out. they run under the LHS ram air intake. Heard of this happening where they short out and give a false HI TEMP reading even when the bike is cold. on the dash preventing the bike from starting. I would start there cos this has all the warning signs. bike wont start if ECU reads the hi temp warning signal
silent.bob said:
Heh, I repaired those same wires on mine a little while ago, although I just happened to stumble across the exposed wiring while changing the LHS switch gear. Could definitely the OP's problem.

I never got any hi temp displays, but the bike did stall a couple of times at a set of lights. Assumed it was the immobliser shorting out to the frame.
You guys have pretty much got it in one.

There was 2 harnesses that run under the L/H air dust and that travel over the L/H radiator fan.

The fan blade had cut through the cable tie, through one harness external protection and another through the external protection, nicked one wire and sliced through another.

The problem was that this wire would still connect to itself every now and then.

Solution. Cut, strip back, solder and heat shrink. Electrical tape on outside sheath and bingo broom broom.

Problem was it was a mission to get to and find.

I just happen to check that the fans spun and I found the cable tie and it went from there.

Maybe I should read the manual next time.
 

·
Registered
Joined
·
10,965 Posts
so what do we win????? :p haha lucky for me i didnt have to deal with this problem (as in trying to work out what happened so i just protected wires before anything went wrong.. i did also stumble onto how to disable the whole pesky immobiliser thing.. but that ill keep to myself :p
 
S

·
Guest
Joined
·
0 Posts
Discussion Starter #18
Nothing cerby, just trying to stir peoples mind into thinking.

Be honest, you google the answer didn't you?
 

·
Registered
Joined
·
10,965 Posts
studricho said:
Nothing cerby, just trying to stir peoples mind into thinking.

Be honest, you google the answer didn't you?
hahah you overestimate my commitment! lol
just have a mate with an 07r1 that had the same problem. poor bugger spent 3 weeks looking for the problem! lol
 
1 - 20 of 22 Posts
Top