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Post Info TOPIC: Impact of fault codes causing FI light to come on...


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Impact of fault codes causing FI light to come on...


Can anyone clarify the impact on the running of the bike when something causes the FI light to come on?

I was under the impression that anything that triggers the FI light causes the ECu to switch to the neutral maps for rev limits, ignition, etc. 

Can anyone confirm this?

How about when it is triggered for a steering damper error? Does that just put up the error but doesn't change how the bike runs?

 



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It depends on the error. The service manual sort of describes the impact of at least some faults.

Some just set the code and light but don't necessarily impact performance.

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Is there anything that might trigger an issue with the ECU if it doesn't receive the speedo drive input? e.g. it knows it's in 5th gear at 10,000 rpm but gets confused because it thinks it is doing 0 mph?

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No problems without a speedo. The ecu calculates theoretical speed from Engine RPM and factory gear ratio's for primary gearing, each transmission gear, and final drive ratio (which is basically the same thing the speedo does, except measuring output shaft directly).


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I have a bizarre problem where the engine appears to be about 10 - 15 hp down on what it should be.

The only thing that is throwing up an error is the steering damper even though the OEM damper is actually still plugged in.

Aside from something crazy like the cams having been reground incorrectly the only other thing that could be causing this is the electronics but I have to admit to being totally stumped.

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You mention the cams being re-ground incorrectly. Did you have the camshafts out of the bike? If so, I would focus on the cam installation. Are these GEN2 cams with teh cam pin in the "correct" location?

Are you just using "seat of the pants" to come up with the 10-15hp number?



-- Edited by sportbikeryder on Monday 28th of January 2013 04:39:42 PM

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sportbikeryder wrote:

You mention the cams being re-ground incorrectly. Did you have the camshafts out of the bike? If so, I would focus on the cam installation. Are these GEN2 cams with teh cam pin in the "correct" location?

Are you just using "seat of the pants" to come up with the 10-15hp number?



-- Edited by sportbikeryder on Monday 28th of January 2013 04:39:42 PM


 

Standard cams have been reground and timed up as per the specified timing. 10hp - 15hp is from the dyno. Both the cams and the rest of the engine is of a higher spec. than the last one we did but it's making less power.

Only oddity is the SD light coming on when the stock damper is still plugged in which makes me wonder whether there is something in the reflash that's gone awry.



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