2001 Gen 1 Hayabusa cranks, but there's no spark

BusafromBiH

BusafromBiH

Registered
Greetings everyone,

I'm posting this on behalf of a friend. We're having an issue starting 2001 Gen 1 Hayabusa.

So a brief introduction, we have tested 3 ECUs in total, all of these work on a different Gen 1 Hayabusa. Two ECUs are 32920-24F00, and a third one is 32920-24FA0. We have checked all of the regular stuff like clutch, kill-switch, tip-over sensor, cleared all input jacks on the electrical installation. The bikes cluster works as usual, and it just cranks but it can't turn over.

The bike last ran about 6 months ago and it was running like a gem, but now it just won't start.

When trying the 24F00, fuel pump does not work at all, sometimes we can hear a little click like it's trying to engage but that's it.

When using the 24FA0, fuel pump works, but we can't get a spark. We've already checked all sensors and it's not giving any error codes except C24 to C27 which is related to the ignition coils.

Since we got no power on sparks/ignition coils, we can't measure the voltages there.

Does anyone have any ideas on what to check next or does anyone know if there are any differences between those two models of the ECU? I have attached the images. and here is a video of the bike trying to start.

Thanks everyone.

1668b6d3-cd61-47a1-affb-12cb95e5271e.jpeg


556fcd6f-4966-4480-aadd-d0f828e905a6.jpeg
 
Because the bike won't start should not change the 12 volt feed to Coils and Injectors
Check them while Cranking

If the bike was Running when parked and now doesn't I would think Gummed up fuel injectors
Have you tried Starting fluid to see if she kicks on that?
 
Just an fyi, a 2001 ecu is Not compatible with the 1999 and 2000 ecu, or the 2002-2007 ecu.
2001 uses it's own ecu, and no other year ecu will work.
However you can upgrade to the 2002-2007, but you will need the stator and a few other parts, and have to repin some connections.
 
Last edited:
sixpack577 said:
Just an fyi, a 2001 ecu is Not compatible with the 1999 and 2000 ecu, or the 2002-2007 ecu.
2001 uses it's own ecu, and no other year ecu will work.
However you can upgrade to the 2002-2007, but you will need the stator and a few other parts, and have to repin some connections.
Click to expand...
What he said
 
202mphbusa said:
Because the bike won't start should not change the 12 volt feed to Coils and Injectors
Check them while Cranking

If the bike was Running when parked and now doesn't I would think Gummed up fuel injectors
Have you tried Starting fluid to see if she kicks on that?
Click to expand...
It doesnt deliver any power to coils and injectors
 
sixpack577 said:
Just an fyi, a 2001 ecu is Not compatible with the 1999 and 2000 ecu, or the 2002-2007 ecu.
2001 uses it's own ecu, and no other year ecu will work.
However you can upgrade to the 2002-2007, but you will need the stator and a few other parts, and have to repin some connections.
Click to expand...
We've tried multiple ECUs, and 24FA0 turns the fuel pump on and it primes it, meanwhile 24F00 does not. Even with the fuel pump turned on and primed, we can't get any sparks on the plugs.
 
BusafromBiH said:
We've tried multiple ECUs, and 24FA0 turns the fuel pump on and it primes it, meanwhile 24F00 does not. Even with the fuel pump turned on and primed, we can't get any sparks on the plugs.
Click to expand...

But are the ecus that you are trying all from 2001 models?
 
You said in this thread (or one of the others that y'all posted) that it did run not too long ago...seems like the ECU shouldn't be the issue. Check the fuses, relay and wiring to sparkplugs/coils since you have an error code for only that anyway.
 
BlueBacon said:
You said in this thread (or one of the others that y'all posted) that it did run not too long ago...seems like the ECU shouldn't be the issue. Check the fuses, relay and wiring to sparkplugs/coils since you have an error code for only that anyway.
Click to expand...
It ran like a gem 6 months ago, we even tried different wiring harness and the issue persists. That other harness works 100% as it was tested on a different Busa but both are Gen 1
 
sixpack577 said:
What year is the other Gen1?
Click to expand...
Same as this one we're having issues starting. Both are 2001. The other now has upgraded wiring and ECU from the newer model, but that was only done as a preference even tho it was working with the wiring we're now using on this one.

We were thinking that a rat might be nibbed on a wire or something, but it's not possible that two different harnesses with 3 different ECUs can't get a spark.

We'll get a third wiring harness and 24FG0 ECU tomorrow, so we'll try checking that harness and ECU.
 
BusafromBiH said:
Same as this one we're having issues starting. Both are 2001. The other now has upgraded wiring and ECU from the newer model, but that was only done as a preference even tho it was working with the wiring we're now using on this one.

We were thinking that a rat might be nibbed on a wire or something, but it's not possible that two different harnesses with 3 different ECUs can't get a spark.

We'll get a third wiring harness and 24FG0 ECU tomorrow, so we'll try checking that harness and ECU.
Click to expand...

It isn't just the ecu that's different.
 
sixpack577 said:
I already posted the differences for you.
Post #4
Click to expand...
Ah, you were referring to upgrading the harness and ECU to later models. The thing is, all of the ECUs we have are for our model, maybe the confusion arose due to us using european models. I was thinking you'd know the differences between the ECUs we currently have. 24FA0, 24F00, and 24FG0 arriving tomorrow.
 
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