The only way to test is to try a different ecu. Unless you can see burned marks on yours, there's really no way to test like you would with a coil or stator.

You are probably right. But instead of trying a buddies on your sled, try yours on his, that way if his doesn't start, you know; but if your sled caused the ECU to fry and you try his on yours, you could fry his too. Then you get to buy two of 'em.

 

He might have blown a fuse too.
There are also relays that switch the power to the ECU when the key is turned on. If these are not good it will give you all kinds of headaches.

 

Yup, I agree with RJ there could be a bad relay, on the chain case side ,right inner foot well.Might be a bad ground? Should be able to hear a click when power is turned on to pressurize the fuel rail from the pump

 

ya iv got nothing no clicks no pump running its just dead iv jumped the wires on the relays and the pump has started but no power to the ecu the light wont flash nothing. was thingking of just getting a set of carbs and switching it over and get rid on the electronic headaches

 

Is the battery good and fully charged?


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I'm not sure if there's a fuse in the ecu ? There is deffently a lot of trouble shooting information on this forum starting with (mrhomquest) he is the God of the Polaris EFI of the 90's.You may find a thread that he has helped with someone else with your same symptoms. He is very detailed in his information & explanation on these EFI systems .
Look it up, I bet you find what your looking for right here from past threads he's helped people with. (mrhomquest)

 

hay i have some of the same probs as ur haveing but i get nothing when i hool up the bat but theres light that blinks on the front of the cpu that blinks 4 time stops blinking for a cuple sec then dose them same thing with the key on or off i could relly use some help too

 

Is there a short blink before a long blink



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