Throttle Body Position Sensor 2010 R1200gs K25 Twin Cam

[BMW COL]

Hello All any help appreciated
My issue is as follows. Bike was running very rough on tick over and up to 3000 rpm
I have found the following faulty parts
Lower Right ignition coil (replaced with new)
Fuel pump regulator (Replaced with new)
TBPS first cleaned then replaced with new.
The only issue I have now is a higher than normal Tick over 1500 rpm
I have tried the following
Reset adaptation values
Reset TBPS by turning on ignition and turning twist grip to 100% and back 3 times then turning off the ignition for 10 seconds
This has a varying amount of success  .
Sometimes the closed throttle TPS is 3.4% sometimes it is 0% after reset procedure.
Even when I manage to get the closed position to 0% if I leave the bike ticking over the closed value slowly increases from 0 to 0.39 to 0.78. to  1.17
This takes the bike out of "idle speed control" and the tick over slowly increases.
I have measured the voltage on the centre pin of the TBS and it remains constant despite the value on the GS 911 increasing
I have also measured the resistance of the cables from the TBS to the ECU edge connector and they all test out OK
The firmware in the ECU is K024-10-02-550
I have read that a firmware update can fix tick over problems.
What is the latest firmware level for the K25 ?
Is this something that a Motorrad dealer will do for free in the UK?
Am I missing something simple out here?
Thank You in advance Col

[BMW COL]

Thought I would let the forum know how I got on as there's been aa few viewings but no replies it's obviously not a common fault.
For a start I need to thank Ted at Motorevive he's based on the Wirral and gave me solid advice.
This fault was driving me up the wall but I have managed to fix it now fingers crossed.
The issue all along was the Throttle body position sensor was not showing 0% when the throttle was closed. On desperation I decided to reset the adoption values again on last time and it made the problem worse. Before the reset the closed value was 5% after the reset it jumped to 25% and the bike was running worse than ever.
I figured the adaptation reset was having some effect on the closed value so I reset the adaptation values again. This reduced the closed value to 20%. As it was heading in the right direction I tried it once more and it worked. Now the closed position is 0% at all temperatures and the tickover is perfect.
I have got to assume there's some sort of bug in the system as this shouldn't be a hit or miss process.  Hope this helps someone somewhere

[WayneC]

Reset TBPS by turning on ignition and turning twist grip to 100% and back 3 times then turning off the ignition for 10 seconds
This has a varying amount of success

This process is an urban myth which people apply to a few models, it was only applicable to some early 90's models

[BMW COL]

Good to know Wayne I wonder how many other people have been needlessly twisting the throttle. Also how many other urban myths there are out there

[WayneC]

Good to know Wayne I wonder how many other people have been needlessly twisting the throttle. Also how many other urban myths there are out there

Far to many & for the 650GS single it is spread on user forums, we spend so much time explaining it, you can use real time logging on your bike to see the position & confirm if the TPS is misbehaving rather than just rely on resets

[botus]

TPS change does require the engine adaptions to be reset - stupidly written under Finishing Work - having told you not to both earlier



As for your other faults - plug in you GS911 head to the DME (engine), and look at live values for your CAT sensors and the trim adaptions with it running

if the CAT voltages aren't wobbling about between 200 and 700mV on both pot all the time and you have one set of adaptions running way different to the other Pot - I suspect one of your CAT sensors has died

the opposite pot is then told to run way to rich and the bike runs like a pig - don't believe you should have error messages - they can have, but I have three popped CAT sensors all of which don't throw error codes that MotoScan or GS911 can find