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Cbr600 f4i 2002 lost keys hiss

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  #11  
Old 06-16-2024, 12:32 PM
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Originally Posted by Ed Harris
According to the wiring diagram :-

https://cbrforum.com/forum/attachmen...89812&stc=1&d=1718161449

the wire you’re highlighting is black / white and should connect directly to earth.
Blk/wht is power is power to entire EFI system: ECU, injectors, coils, etc. Never connect to earth

Grn is earth and is gathered up and bolted to frame
 
  #12  
Old 06-16-2024, 01:36 PM
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Originally Posted by dannoxyz
Blk/wht is power is power to entire EFI system: ECU, injectors, coils, etc. Never connect to earth

Grn is earth and is gathered up and bolted to frame

Oops, sorry - misread the diagram trying to read it on my phone
 
  #13  
Old 06-16-2024, 03:48 PM
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Diagram’s blurry too. Anyone have higher-res clearer diagram? Please post it.
 
  #14  
Old 06-23-2024, 03:21 PM
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Guys, I sent the ecu and ignition off, it came back but the bike will not start, fuel pump is not priming, spoke to person who did the programming and they have assured me the programming is fine.. the bike was fine up until removing ecu and ignition, has to be part of the hiss why it's not priming, maybe the antenna is not working all of a sudden, absolute gutted it didn't fire up after forking out all that money, is there any way I can narrow it down to it being hiss causing this problem, ie checking with multimeter? Also worth noting I have noticed on the instrument cluster there is usually a little led with a key icon I am sure that used to flash every so often, now it is just dead.
 
  #15  
Old 06-24-2024, 07:26 AM
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Definitely bad ECU/programming if that was only thing that changed.

Should get HISS light flashing when off for 24-hrs, then stops.
HISS light should go ON when key ON for 2-3s, then off and primes pump.

Did you fix that dodgy power wire? Measure it on ECU side when key ON/stop=RUN to make sure it has power. Also measure blk/wht at injectors and coils.
 

Last edited by dannoxyz; 06-24-2024 at 07:31 AM.
  #16  
Old 06-24-2024, 09:34 AM
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Thanks for your reply, I was almost convinced it was dodgy programming or ecu, big shout out to bikedecoders as they supported me thoroughly throughout my issue after doing a great job programming new keys at the best price and fastest turnaround, Lukas was sending me parts to fault find and trying to help, but.. in the end it was the bas sensor not supplying voltage to ecm .. another big shout out to Danny who posted this. https://cbrforum.com/forum/f4i-main-...1-06-a-163487/

This eventually led me to the problem, hope this post helps somebody one day, bikes in absolute bits and was just that ****ty sensor faulty, ah well.

Thanks for replys and support peoples. Don't lose your only key for any bike with hiss system.
 
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  #17  
Old 06-24-2024, 10:40 AM
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Good job tracking that down!

Odd that BAS would act up in that time while ECU was sent off.

Although mine would lock up in cold winter. I'd have to take it off, warm it up and shake it around. When I can feel innards moving, then I'd put it back on and bike would start right up.
 
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  #18  
Old 06-25-2024, 09:23 AM
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Fantastic, great to see a company trying to help out and not leaving you high and dry after taking your money!!
 
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Yorkshaman (06-26-2024)
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