Coose
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| posted on 10/5/06 at 07:35 AM |
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2002/03 Yamaha R1 ECU
Morning!
Does anyone have a spare one of these kicking about that works? A friend has mysteriously lost no.4 coil output.......
Cheers,
Coose
Spin 'er off Well...
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jimgiblett
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| posted on 10/5/06 at 12:49 PM |
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Wotcha Coose
I would suggest either ebay or somewhere like PDM.
Are you sure its not the ICD cap rather than the ECU giving the problem?
- Jim
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Coose
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| posted on 10/5/06 at 04:07 PM |
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Ey up Jim,
Well, I found that we had no spark on no.4, swapped the coil and plug with no.3 and still no joy. The bits off no.4 sparked beautifully on no.3
though.....
After confirming that I had 12v present at the live of the coil feed, I measured resistance between the trigger and ground on all coils with the
ignition off and each coil disconnected. On all but no.4 I had open circuit - on 4 I had a resistance (can't remember the value off hand) so
unplugged the ECU and checked again to see if a wire was chaffing on the bulkhead or somewhere. No problems were found there....
I should maybe say at this point that the motor is in the back of a very cute Mini! 
Anyhoo, I then checked resistance again at the ECU between each coil pin and ground and found I had the same values as at the coils, so it must be an
ECU fault. Nobody (i.e. the R1 forum or BSB tuner, Nicky Kennedy) has ever heard of an R1 ECU failing!
Fortunately, today we were offered another ECU to try, so that should prove it.
I'm just asking to see if anyone has one really as we're almost definitely going to need one and they seem to be a bit thin on the ground
on eSkip....
Cheers again though Jim! 
Spin 'er off Well...
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