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Post Info TOPIC: Fuel pump relay


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Fuel pump relay


Hello ,

                     i have a weird problem with my 2008 busa , the fuel pump has stopped buzzing now , previously it was an intermittent problem but now it has finally come to rest . On deep anlysis i found that the ground supplied from ECU is the absent , when i ground the wire going into the relay the fuel pump primes but continously as it is not governed by ECU . Help is required ...Thx in advance ..jay



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Senior Member

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Immobilizer problem? Any fault codes? Tip-Over Sensor?

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C41 Error , checked all including tip over sensor , immo is ok other wise the bike could not be started even after earthing the relay wire . regards



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C41 Error , Immo seems to be ok as the bike can be started after earthing the wire from fuel pump relay , checked tip over sensor it seems ok other wise it could have also thrown code ..regards

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Checked the TOS sensor and found its working, satisfactory . Any other test to be done



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  Kickstand switch needs to be "closed" aka shorted.

Bike in Neutral, handle bar switch in "on" and clutch pulled in.

 

 Do you have modifications done to the bike?



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Im sure im doing all these , when i short the fuel pump relay the pump spins and the bike starts , if i remove the ground it stops instantly

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No fault codes? Ever flashed the bike?

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Member

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C41 occurs always , its related to fuel pump relay disorder ...tx

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Senior Member

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 Did you actually check the kickstand switch to be positive the wiring and switch is good?

 Not to be smart but, I have had the switch partially fail on my bike which cause intermittent problems.

 



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