You should listen to me. No, seriously, listen to me.
Join Date: Oct 2008
Location: Santa Barbara
Motorcycle: Blue 2006 GSX-R1000
Re: K7 with TPS issues please help....
The TPS averaging is about .4 second per the manual. So something else seems to be going on. Furthermore the K5/K6 manual dances around it but it apparently wants the TPS voltage to be 1.125 when the bike is idling at 1150 RPM. So if you've got the idle speed correctly adjusted, you could adjust the TPS without the engine running by either the -c00 display or a voltmeter on the TPS. It may not mean a hoot but I'm betting that adjustment by voltmeter would be more precise. However the fast idle must not be engaged or it will mess everything up and that's probably why it isn't mentioned (temporarily unplugging the STVA connector ought to suffice). I think that something similar is true of K7 except that you've got the ISC in the mix controlling the idle (and fast idle). My thinking, which may be totally bogus, is that instead of a fixed target voltage, the ECM is altering the target based on things like the current idle speed and the ISC setting. This target altering could take place at a slower pace and be what he's seeing.
But as said, this is just a guess from someone who happily doesn't have an ISC.
Note that early on, people with K7/K8's were experiencing mysterious idle behavior that was traced to them disabling the clutch switch and its impact on the ISC. I don't remember C40 being mentioned, just the bike dieing instead of idling. The switch must be functional. But a Brembo switch ought to be fairly bulletproof unless he's been beating on it. Should be easy to check with an ohmmeter.
P.S. For the few here with aftermarket dashes (AiM, Translogic, etc.) there might not be a -c00 display and the above described voltmeter method may be the only way to set the TPS.
Last edited by BillV; 07-08-2018 at 11:27 PM.
Reason: Added P.S.