Hey , I got 2006 GSXR 750 , the code was c46 , FI light stays on all the time . I took the back tail section off to get to the Actuator Assy, Exhaust Control , I forced it counterclock wise and it cuts off the exhaust , then turn the key on it readjust back to postion it stays at and the FI light goes off ,turn it off then back on the FI light comes back on and stays on, when I turn key on the Actuator Assy, Exhaust Control does not move it just clicks and jerks a little. But if i force it counterclock wise it will move back to the original position.I adjusted the cable both ways no diffrence the FI light stays on , disconnected the cables off Actuator Assy, Exhaust Control when turn the key on it rotates about half a turn clockwise ,still keeps the FI light on when its running.any advise ? Thanks for any suggestions !
2006 600. Did exactly same thing. Had to take of the stock exhaust just to check what was the valve doing.
Key always on, I noticed that when you turn the red switch (run) ON, valve will close 70% then fully open again. When I switched the run button off then once again ON, Ive noticed that now (2nd time) the valve closed 100%.
Did this same thing, but now getting the engine running and guess what? Turned the key ON, turned the run bttn ON and started the engine.
FI was blinking.
Turned the run OFF,then back ON, hit the start an the FI was gone.
This second time I could actually hear a quick mute in the exhaust, caused for the complete valve closure.
Ive came to understand that every every time when you start your bike and valve doesn't fully closes you get FI but when you start your bike and valve closes 100% then opens right back you don't get FI.
So, every single time the valve fully closed after startup I wouldn't get the FI advise.
1-Low battery voltage- When you are about to start your engine, lights, gauges, starter, ECU and valve servo, all these makes a big drain in batt. lowering the voltage causing servo not to be strong enough to fully close the valve. (The last 20% of the valve movement is the hardest one cuz of the spring array that tends to keep it open)
2-Damaged servo- As any servo after a while it can loose part of its power(just an option)
3- rusted valve junctures (will spray chain lube tomorrow, let you know what happened. Hopefully wont start a fire)
This is just what Ive seen in my bike. I could be completely wrong.
Guess we should ask a SUKI designer.
ofcourse we are not going to find one here: