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Buell Forum » 1125R Superbike Board » Archives 001 » Archive through June 04, 2010 » TPS Reset « Previous Next »


Buell 1125R Throttle Position Sensor (TPS) Calibration
(TPS Zero / TPS Reset)


NOTE
The Throttle Position Sensor Zero Procedure should be performed if the throttle position sensor or ECM are replaced or if the ECM has been re-calibrated.



To zero the TPS:

1. Set the Run/Stop switch to the Run position.
2. Turn the ignition key to the On position.
3. With the engine off, rotate the throttle grip from its closed
throttle position to the wide-open throttle position and back
to closed position three (3) times, holding the throttle grip
against each stop (open and closed) for one (1) full second.
4. Cycle the ignition key off and back on.
A properly calibrated TPS sensor will indicate 3.7 to 4.2 volts
for wide open throttle.

Author Message
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Steve899
Posted on Friday, May 21, 2010 - 12:40 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

TPS reset , how do you do it? Yes I have searched and procedure still eludes me.
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Rpm4x4
Posted on Friday, May 21, 2010 - 12:45 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Set the Run/Stop switch to the Run position. Turn the ignition key to the On position. With the engine off, rotate the throttle grip from its closed throttle position to the wide-open throttle position and back to closed position three (3)times, holding the throttle grip against each stop (open and closed) for one (1)full second. Cycle the ignition key off and back on.
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Dannybuell
Posted on Friday, May 21, 2010 - 12:45 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Google "buell 1125 tps reset"
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Steve899
Posted on Friday, May 21, 2010 - 12:49 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

thanks guys, if I do it wrong can I start again, or do I unplug the ECM and start again, Oh I got the Race ECM from Eric Buell Racing today and installed it, thats why Iam asking about TPS reset
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Steve899
Posted on Friday, May 21, 2010 - 12:50 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

will ck with Google
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Rpm4x4
Posted on Friday, May 21, 2010 - 12:58 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)





Use this it works very well. Just in case you misunderstod Dannybuell.
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Steve899
Posted on Friday, May 21, 2010 - 01:00 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Found it, thanks again guys
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Pdawg1970
Posted on Friday, May 21, 2010 - 01:21 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

great!

i was gonna take my bike in to have this done. now i can do it myself? SUHWEEET!

thanks guys!
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Easyrider
Posted on Friday, May 21, 2010 - 09:20 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

You dont have to cycle the key off, i dont know who keeps getting that story up, after THE reset you can imediatly start the engine
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Drhodes1970
Posted on Friday, May 21, 2010 - 10:21 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

How often do you do this reset and why?
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Spank
Posted on Friday, May 21, 2010 - 10:25 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I have always wondered how a person knows it's reset??
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Blake
Posted on Friday, May 21, 2010 - 11:21 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Dris, the factory service manual states that the key should be cycled off then back on, at least for the air-cooled bikes. I'd assumed it was the same for the 1125's.
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Blake
Posted on Friday, May 21, 2010 - 11:25 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

To zero the TPS:

1. Set the Run/Stop switch to the Run position.
2. Turn the ignition key to the On position.
3. With the engine off, rotate the throttle grip from its closed
throttle position to the wide-open throttle position and back
to closed position three (3) times, holding the throttle grip
against each stop (open and closed) for one (1) full second.
4. Cycle the ignition key off and back on.
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Ccryder
Posted on Friday, May 21, 2010 - 11:32 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Dris, are you in country?
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Easyrider
Posted on Friday, May 21, 2010 - 01:18 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Blake, if you measure the signal when doing this, you would see it is not making any change after the reset with or without key off the signal voltage is the same
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Easyrider
Posted on Friday, May 21, 2010 - 01:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Ccryder yes, I am in a swamp somewhere (-:

in Virginia beach area
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Blake
Posted on Friday, May 21, 2010 - 04:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I believe you Dris, just seems like a good idea to be better safe than sorry and follow the factory instructions.
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Easyrider
Posted on Friday, May 21, 2010 - 05:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Blake, as you american people say, whatever (-:
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Stirz007
Posted on Saturday, May 22, 2010 - 02:41 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

It might be my imagination, but I thought I heard a little 'click' each time you pause at WOT and CT.
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Blake
Posted on Saturday, May 22, 2010 - 10:52 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Dris,

Why bring her into the discussion? ; )
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Bott
Posted on Saturday, May 22, 2010 - 03:24 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

in diagnostic mode, my tps at closed is 2.0
at wfo, it goes to 90---then slowly } climbs to 95.5. I have reset several times .This happens regardless of steering lock to lock or straight. WTF? Normal?
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Bcrawf68
Posted on Saturday, May 22, 2010 - 03:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

After having Dris reprogram my ECM, performing the TPS reset exactly like he said made a HUGE difference.
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Easyrider
Posted on Saturday, May 22, 2010 - 05:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Bott, it is not 100% good

we wrewrite THE tables so it can be better
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Dannybuell
Posted on Friday, May 28, 2010 - 05:40 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I sent my Erik Buell Racing ECM back thinking it was broken. I had failed to reset the ECM properly. I just received it back and following the instructions on this thread, installed the ECM successfully. I live in Oregon so it's raining. It starts up and idles nicely in the garage. :-)

P.S. This thread should also be in the new owners reference area.
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Zac4mac
Posted on Saturday, May 29, 2010 - 09:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Guess I got lucky, or I'm about to be surprised.
I swapped the OEM ECM with Race ECM and it just worked beautifully.
I still have not pulled the battery or done a TPS reset as Loretta has NEVER run this good in 25k miles.

Z
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Dannybuell
Posted on Saturday, May 29, 2010 - 09:37 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I put about 50 miles on the bike today. It does not get nervous at 3000 rpm and just seems more relaxed. Short shifting gear changes in quick order now work.

-----City-----
I am relearning the lower end of the power band at this time. There is much less surging. The power delivery is much smoother. This is the bike I had hoped for, relaxed and with more torque.

-----Freeway-----
The bike is as good as it ever was on the freeway rolls more with the race module's IAC setting. I understand the race module's IAC giving less torque argument for suspension balance and will give it a try.
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Kinder
Posted on Wednesday, May 11, 2011 - 08:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

HAte to rewaken a dead thread but....

Is there any reason the procedure shown up top wouldn't work?

I have tried it half a dozen+ times now and still no love. : (

Bike has new stator and harness upgrade.
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Easyrider
Posted on Thursday, May 12, 2011 - 12:13 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Kinder, can you explain what's on your bike? and what isn't working?.
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