Question about 1995 Yamaha FZR 600

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What is this relay for?

What does the 3en-81950-00 relay do? What is it responsible for? I can't find a diagram online showing all that is tied to it. Any ideas?

Posted by jgatlin1979 on


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Louie Role

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Hi and welcome to FixYa,

If I remember right, an 3EN-81950-00 multi-function relay onboard an FZR would be on the right side, beside or behind the starter relay. Its function is an electro-mechanical processor. It detects if the transmission is in neutral, side stand is down, clutch is in. In turn it enables the CDI to work and the starter relay to trigger the starter motor. Internally it would have 2 relays and a couple of diodes.

Pls post back result(s). Good luck and Thank you for using FixYa.

Posted on Jan 16, 2009

  • Andrew baker Apr 20, 2020

    Will this unit I presume then stop the machine from sparking???????

  • Andrew baker Apr 20, 2020

    Basically I cannot get my fzr 1000 exup 1991 an Ru I understand to run!!!!
    I have no spark!!
    This little unit mentioned above just sits there ticking away, and if its ticking away would you say its broken, abd can be repaired, or get a new one??????




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 3EN-81950-00 Relay Assembly

Benimur is correct. This is often reffered to as the master relay or the relay assembly and it has about 4 different circuits in it which include a couple diodes and a couple relays. More information about this relay and the entire electrical system of a Yamaha FZR can be found at this site has been around forever over 6 years since I've had my fizzer and they never let me down with all the info I need.
In particular if you D/L the manual for the 600 CC you can use section 8 and you will see all the information you need to troubleshoot this relay and test it. You must check continuity and resistance across a couple of different sets of pins to properly test all the included circuits in the module. The reference values to check all of the circuits in this module are in all 3 of the section 8 files that are provided in the manuals that are linked above. There are a couple circuits on the lighting system check for this relay module in file 1 and 3 and the testing of the ignition cut off relay and diode inside this module can be found in file 2. Hope this helps took a lil bit to find the specs I needed but this info got me through the test I needed to diagnoss this relay to be an issue that I was having with my Ingnition System on my 96' FZR lucky for us most years 89-99 are the same so this manual will work for most people.. they even have a manual for the 400 CC on there too I think.

Posted on May 03, 2009


jon black

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Hi, its a fuel pump, neutral and sidestand relay

Posted on Jun 21, 2013

  • jon black Jun 21, 2013

    yes, if the sidestand is down, putting it in gear will kill the engine.. stops you riding off with the stand down.


joe riley

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I have a question would this cause the release of the clutch to kill it on take off idols fine act like its always in gear even in nuetral..

Posted on Nov 04, 2011

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