c44 fault. heated oxygen sensor

[ripsi]

Finally traced my FI fault. Looks like C44 which as title is apparently the heated oxygen sensor in the Exhaust. Question to you good people is what does it do ? And why? I have the haynes manual so know the buzz to check but don't know it's purpose in life.

Also whilst in dealer mode what are the little dashes for. Mine flick between top and middle middle seems to be on rolling off the throttle. Think I read somewhere something to do with a pair valve ????

I await your esteemed opinions.

Cheers once again.

Simon

Edit. Is the little lines to do with the throttle position indicator. Why is it moving ? Loose ?

[mr_diver]

here:
http://www.ebay.co.uk/itm/Oxygen-o2-sensor-eliminator-Suzuki-DL-650-V-Strom-2007-2011-/261122694195?pt=LH_DefaultDomain_3&hash=item3ccc201c33

just ordered one for the Vara and will get one for the Enfield.

It just tricks the FI system into thinking the exhaust gas is perfect all the time. apparently solves some of the low rev surging in the TL/SV/DL1000 and the Firstorm engines.

All you have to do Is trace the wire from the sensor back to the connector, unplug the connector and pop the eliminator in, tie/tape the loose end of the sensor wire to something to stop if falling out of it's place and trailing behind the bike to the time being. if it cures the C44 code, after a few rides you can then go and cut the wires at the sensor end.
Or at least that's my plan, but I don't have any FI warnings.

Trying to get the O2 sensor out of the exhaust is notoriously hard to do unless it's been released fairly often. I had a go at getting the one on the strom out a long time ago to see if it would come out to get an eliminator. No chance was the thing ever going to move.

[ripsi]

Why thank you Mr Diver.

I've ordered one, couldn't find one delievred PP free in UK so plus £2.95 delivery, but worth it if if gets shot of the fault.

Performance and response over emmissions anyday ( I won't be voting for the Green Party !!)

In dealer mode, does the FI light not illuminate in fault condition (When C code shown ?)

Thank you muchly  

[greywolf]

K4-L1 Wees don't really have an FI light. If a fault exists, the clock display changes to an FI in user mode. In dealer mode, a no fault condition is -C00. If there is a fault, the fault code is shown, C44 in this case. The dash before the C is a TPS calibration tool. It should be centrally located at idle and raise to the top at cruising speed. 2500-3000rpm seems to be optimal for the raise point but things are okay as long as the dash is centered at idle. If checking, be aware there is about a half second delay before the dash responds so the throttle needs to be held for a second at each increment in rpm rise.

[ripsi]

Interesting
I have the dealer mode jumper in and I've left it in just in case I get a second error, which I don't seem to have (touch wood) I've ordered a Oxygen sensor eliminator so hopefully that will alleviate that fault.

I did track down the TP switch position bit in the book (kept on reading that chapter ) according to Mr Haynes engine off to adjust the TPS top the centre mark and when running as you have perfectly pointed out it will move, so yeah, not worried about that any more

Thanks once again Greywolf and Mr Diver, Much appreciated

Simon

[mr_diver]

fitted an O2 sensor eliminator to the Vara this morning and wow.

No more hesitation, the on/of fuelling is just as smooth as the Strom now, and seems to have got a little more pep lower in the rev range.

For less than £15 well worth it.

Hope one sorts your issue mate.

[bosnjo]

It would be nice to know what the eliminator would do to new DL1000.

[ripsi]

Nope. Not fixed. VERY quick delivery though. Appears all it is is a male connector with either a resistor and or diode neatly fixed to it. Just plug it in.

No noticeable difference in performance.

I'm now thinking the fault (intermittent) lies in the loom feeding the sensor so next plan is to trace the wiring to see if it's shorting...

Question.  is the heated oxygen sensor hard wired into the ECU ? If so could I disconnect the OEM wiring and wire the sensor Eliminator straight into the ECU ?

Regards

[ripsi]

Had a respeonse from the Heated O² Sensor eliminator seller,

Please could you check the connection? Push the connector all the way inside the harness connector. This is a common problem when installing the first time. Also, have you let the bike run without the o2 sensor prior to the installation of the eliminator. It will keep the codes until you reset the ECU.

Question? How do I reset the ECU

I searched and found this post

I have reset the ECU using the check procedure of dealer mode, switch on, switch off, wait 5 secs, dealer mode off and switch on.

Is this right ?

[greywolf]

That reset procedure resets the idle speed control valve, not the ECU. V-Stroms don't have learning ECUs so there really is no reset. They do store fault codes but there is a difference between an active fault code and a stored fault code. If you don't have an active fault code, you have no FI displayed and your ECU is operating in a normal condition. You will have a C44 stored fault code but it will not affect anything. It can be read only with a Suzuki SDS diagnostic tool on a computer or some other Suzuki compatible OBD computer based tool. The same tool can be used to clear stored codes.

[ripsi]

Well... it appears they have experienced a bad batch of resistors........ mmmm OK
Judgement is reserved til I receive a replacement... ill keep you posted

[ripsi]

Still No replacement eliminator .....

All sorts of assurances by "Mr Man" in Greece.

I've started a fleabay dispute and will cancel if still not recieved in a week.....

Maybe this is just not meant to happen.....

Keep you posted !!

[ripsi]

Well just recieved the second eliminator

Will fit over the weekend and see what gives.... funny thing is that the C44 fault has not come back on for, what seems like, a couple of weeks, maybe she has self healed ????

Probbaly now given it the kiss of death and it will come on next time I use her

Must confess last time it did come on flicked the kill switch on and off on the hoof and it went away......

Ah well electronics Hello? who would have em !!

[ripsi]

Didn't Work for me and my strom. Got my money back after a bit of stroppiness.
Guess ill have to live with am occasional fault light.....