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- XT660Z Mods ( https://www.xt660.com/forumdisplay.php?f=165)

- - Bike running too rich ( https://www.xt660.com/showthread.php?t=23417)

TO RICH. N/A.:smilies0337:

Btw, the engine breather hose block seems to work. Gives a bit more air and throttle response.

Quote:

Originally Posted by Pleiades (Post 206197)

I think you mean the CO setting? Changing the CO setting only influences the fuelling at tick-over and small throttle openings (up to 2%) it'll make very little difference. Plus increasing the CO will actually make the bike richer!

Anyhow, you can't change it on the Tenere unless you buy (or borrow) one of these...

https://blognyamitra.files.wordpress...ostic-tool.jpg

Where does the green wire hook up to?...I can't find a place for it on my xtz.
I have this tool http://au.dhgate.com/product/2014-sp...FUcJvAod8B0A9g

Quote:

Originally Posted by Javelin (Post 206751)

Where does the green wire hook up to?...I can't find a place for it on my xtz.
I have this tool http://au.dhgate.com/product/2014-sp...FUcJvAod8B0A9g

The green wire is the ECU COMMS, the red and black wires are permanent +12V and earth respectively. When you get the Yamaha tool, you get two sets of wiring that can be swapped at the three pin connector on the diagnostic unit to suit different Yamaha models: (1) red wire with crocodile clip, black wire with crocodile clip and a green wire with a spade connector (shown in the picture in my previous post). (2) Single three-way triangular shaped multi-plug.

On the Tenere you need option (2).

Plug on the diagnostic tool looks like this...
http://i864.photobucket.com/albums/a...psanif1x5l.jpg

The port on the bike is covered with a blank female connector which looks like this...
http://i864.photobucket.com/albums/a...pslkzoma9y.jpg

Take the blank off and you will see the male connector which plugs into the diagnostic units female plug...
http://i864.photobucket.com/albums/a...psvafhsdn1.jpg

If you weren't supplied with the triangular connector then you will need to fabricate something to allow the green wire to connect to the terminal for green on the bike's diagnostic port connector. You can connect the crocodile clips direct to the battery.

BE CAREFUL THOUGH - Any miss-connection or reverse of polarity could result in ECU damage! Using the proper triangular plug will prevent any such problems as it only goes on one way.

Quote:

Originally Posted by Pleiades (Post 206754)

Yeh, I have it connected correctly but it doesn't work, I thought I might have done something wrong...P.O.S.scan tool won't allow me to adjust co...it just reads "CX127" and nothing happens when pushing the buttons. My scan tool came with the triangular plug and the green wire on the same lead...EG: plug the correct lead in and the green wire is hanging there doing nothing.

Quote:

Originally Posted by Javelin (Post 207138)

Not sure about CX127 error? I can only really refer to the official Yamaha diagnostic tool, but the loose/hanging green wire doesn't sound right. In fact it sounds as though (guessing here) that its a communication error?

When connected in the normal mode (diagnostic tool connect, no buttons pressed and engine running), does the display show rpm and coolant temperature? Can you actually open the diagnostic mode (holding the mode button in and switching ignition on) and perform any of the diagnostic tests, or is it just the CO1 that doesn't work? Does the triangular plug have three wires going to it (red, black and green)?

A photo would be really helpful in this instance if you can get one...

Yes, I can read rpm & coolant temp, but the display flickers...The only other thing it can do is open the co1 and scroll through 1 to 4 and back to one.
There are no other selectable options, and it says " M adjust" in co1-4 it comes up with "CX127" or if I don't hold the mode button down when turning the key back on it reads CO 1.0 but will not respond to adjustments...I want to check my sensors in real time as well.
I have been using the yamaha repair manual as reference...I am going to Yamaha today to use their tool, and will let you know what happens.
Thanks, Glen.

Well, I teed it up with the head mechanic at Yamaha, to check co for me, but when I got there the service manager changed his mind, and wanted me to come back in two or three days.
They would not sell me a FI tool either, have to be a Yamaha dealer.
BE WARNED the RACEAUTO tool from China sold on D.H.Gate and Alibarba DOES NOT WORK on all Yamaha's as described, it is a scam, and they will not help.
This one
http://www.raceauto.net/english/news_view.asp?id=15

and they sent me a virus when I complained.