yamaha fazer fzs 600 2003 Rev counter not working

[Gnasher]

[quote author=darrsi link=topic=27205.msg327907#msg327907 date=1638047734]
Have a look down the bottom of the page, in the blue highlighted box.


[url=https://foc-u.co.uk/index.php?topic=25856.msg319116#msg319116][size=1.35em]https://foc-u.co.uk/index.php?topic=25856.msg319116#msg319116

Thanks for the info, I've carried out all theses checks on the TPS. Rotating the TPS records nothing on the speedo 0mph. with the TPS Reconnected and the engine running rotating the TPS does cause some fluctuations in the engine tone but not a great deal. If a TPS goes defective will this cause the Rev counter to stop working?
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The speedo or rev counter not working has nothing to do with the TPS, you've been sent up a blind ally mate. :rolleyes  If you've removed or adjusted the TPS you will now need to rest it as per the manual or you'll start experiencing running and possibly starting issues.

If the rev counter and speedo are messing about, check the earth/ground for the instrument cluster as they share the same ones and as also mentioned a failing battery can also cause issues. 

Failing that but it's unlikely the wheel senor is breaking down and so is the sender on the rev counter but as stated very unlikely they'll both fail at the same time.  Go for the ground connection