My tacho don´t work - CBR 600RR
 

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

Hi check the VSS (vehicle Speed Sensor)

The engine start normally.

I think that if the sensor was damaged the motor would not start.

Thank you