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Discussion Starter · #1 ·
Please help my grizzly cranks but will not start. Diag shows code 13,15,21,22,41 . Cant figure this out. The ecm and wire harness are brand new. When the key is turned on and switch set to run the injection system does not receive signal from ecu to activate fuel injection system. The bike will start if i pour fuel in intake while cranking therfore i have ruled out spark.
 

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Hey...Cabi6339...Welcome to GC from Wisconsin.

Has it ever ran since replacing the ECU and harness?
Where did you buy the ECU? new or used?
The codes you list are all related to sensors check that they have the right connector and that they are plugged in fully.
Check the the fuel injection fuse.
 

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Discussion Starter · #3 ·
Never ran after ecu and wire harness replacement but the problem has been solved. The ecu was brand new from yamaha and is defective. I purchased a used one on ebay and it started right up. Thank you for the reply
 

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Thanks for posting the fix!
 
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