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Discussion Starter #1
Hello everyone,
I have a kartcross with cbr600rr engine.
year: 2008
ecu and loom: hrc

The engine speed in the cluster dont work, stay on zero rpm.
I take the signal from tacho (yelow green wire) with a scope.
when the dashboard connector is pluged I have about 1v constants.
If it is off I have a square wave oscillating between 5v and 15v.

Will the ecu be broken or will it be the dashboard?

thank you
 

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Is it just the tach that's not working or the entire dash?
You may just have a blown fuse.
 

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Discussion Starter #5
I do not have anyone to lend me one.

I already bought another dashboard to try but it still has not arrived.

thanks
 

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"Dr. said you need a tachiadomy." lol.

I would definitely say you have a faulty dashboard. The clipped signal is coming from dashboard, not the ecu.
 
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