Code 33

[conanbarbaren]

code 33 is on screen does anyone know what it is.

 

[zackn291]

http://www.ty4stroke.com/viewtopic.php?t=67046 check it

 

[UpstateNY_sleds]

Code 33: Open circuit in the primary circuit of the Cylidner #1 ignition coil.

 

[Jeffz]

Thread resurrection time. I've been working on my brother's 07 FX and i'm getting a Code 33, open circuit on cyl. 1. I tested both coils and they are fine. I also did a quick run through on the wiring harness but can't seem to find any problems. Brand new plugs as well. Could this be an ECU problem? Anyone have any suggestions?

 

[canoehead]

Did this just occur when you changed out the plugs? If so install the old plugs and double check. Maybe a bad plug?

 

[Jeffz]

It may have happened at the end of last season. He said it was running rough when he put it away. I'll double check the new plugs, and I have a couple more new ones I could try as well. I'm also going to swap my ECU onto his and see if that makes a difference, otherwise I guessing it's in the sub-harness or the main wire harness. Not really looking forward to chasing bad wires or connectors.

 

[Crewchief47]

swap the coils into side by each cylinders and see if the code changes. I know you said you tested them but this will eliminate the coils 100%.

 

[Jeffz]

I swapped my ECU onto his and the code 33 does not show up. I'm not sure how the ECU could go bad like that? I checked all the pins and they all look good, so I guess a new ECU is in his future.

 

[FarbeyondDriven]

It ran fine after the swap?

 

[Jeffz]

I didn't start it, just flipped the key on to see what codes came up. I'll put the bad ECU on mine and see if comes up.

 

[Jeffz]

Turned out to be a bad ECU. Bought a used one off eBay and it works fine, no codes!

 

[FarbeyondDriven]

Wonderful. Let's hope nothing else happens...

 

[Jeffz]

Code 34 coming up now! This is the same as the code 33 but the other cylinder. I now have no idea what is wrong with it. We are up in Duluth wanting to ride today and now we're stuck at the hotel! Any help is appreciated!

 

[yamahas]

Did you try swapping with the #1 coil to see if the code goes to the other side?

 

[Jeffz]

I did that the last time I fixed it. Also checked them with an ohmmeter and everything was good. I'm thinking it's a problem with the injector sub harness or the main harness.