Please help with Code 43-grounding?

[AZ1049]

I want thank everyone on this forum for putting together a tremendous resource and wealth of knowledge. I did search the forum and found a lot of info on my issue but I can't seem to figure it out yet. My 09 RTX SE just started giving me the occasional Code 43. It first happened when I first backed my sled out of the trailer. It just stalled/shut off. That was only time it actually shut off. Since then it happened a handful times but it's always during start up, never when runner. When the problems arises it will crank but won't fire (except 1 time it did??) and it flashes the check engine light and code 43. I replaced the fuel pump relay with a solid state red type and still had the issue as soon I tried to start it. Put the old relay back in and it started. Switched back to the red one and it started and worked great for one or 2 rides. It might happen when it's hot, cold, wet, or dry- I can't crack the code. The battery is 1 year old. I checked the wire loom under the dash by the steering column and can't see any evidence of a rub but I did not remove the plastic. I did shake the wires and try to recreate the issue but no luck. It happened yesterday during a break on our ride. Went to start it- check engine light flashing and 43. Unhooked the battery, waited, reconnected- still had the issue. Went into diagnostic mode and it was showing 0 codes even though it was just showing code 43 a minute earlier. Unhooked the battery again and reconnected- still got 43 cranked but would not start. Went back into diagnostic mode and it should up. Cleared the code and it started and ran fine. One of the times I was trying to start it I did hear the clicking (sounded like a relay) during the first few seconds when you turn on the key. I had replaced the starter relay last year because it would occasionally not crank (separate issue). I cleaned and applied grease to the main fuse last week (it was corroded). The only other issue is the thumb warmer switch only works once in a while. I am going to try to replace the starter relay again with a genuine Yamaha part instead of cheap China-made version I used last time but I doubt that's the issue. Any other ideas? Is there is a common grounding junction to check for corrosion? It sure seams like a ground/weak voltage issue. Would anyone recommend changing the other 2 relays up front to the solid state red ones? I know that should be done either way but I am just trying to isolate my issue. I'd really appreciate any insight.

Thanks

 

[74Nitro]

Think I've seen this before and the problem was the female terminals in the plug that plugs into the starter relay. Specifically one of the red wires.

 

[AZ1049]

Thanks so much! That is the first thing I will check. Do you recall if it is a corrosion issue or loose female connection? Thanks again!

 

[Mooseman]

I am going to try to replace the starter relay again with a genuine Yamaha part instead of cheap China-made version I used last time but I doubt that's the issue.

NEVER use CCC (Cheap Chinese Crap) starter relays. It destroyed two starters by sticking on. 'Nuff said.

Check the ground wire connector like this one:

Like another one with a Nytro found out, it can work itself loose or corrode.

 

[AZ1049]

Thanks so much!

 

[74Nitro]

Thanks so much! That is the first thing I will check. Do you recall if it is a corrosion issue or loose female connection? Thanks again!

They r small terminals, I think they become a bit corroded from moisture trapped, then they become weak and don't squeeze the male terminal firmly enough