The Yamaha Road Star Warrior Forum

A bit over a week ago, I had to ride in the rain. It ran fine all the way home but wouldn't start the next day. I pulled the seat and the blinker selanoid was clicking,when I turned the key on, but the blinkers weren't on. There was about three inches of water in the batterie box. I drained the box, and checked all the fuses they are all good, and let everything dry out for a week. It turns over fine, but won't start. The check engine light blinks rapidly while turning the bike over. There are no error codes. Anyone who can help with where to start would be much appreciated.

I have never gotten any water in my battery box and I have shot a healthy stream of water at it.  If it was raining that hard I would check my coils just to see if the wires could have corroded.  But if had that much water in the battery box there is no telling how much was in it before you got it stopped.  I wouldnt think that the ECU could have been submerged and I hope that it is somewhat water proof but I guess there is always a chance it could have been damaged.  Just keep in mind that rain water will corrode the hell out of hot electrical components.

I would start checking very methodically every single circut one by one and document what you have done.  It will be a lengthy and tidious process but it will cost some change at the dealer to hunt down an electrical problem.

Good luck to you sir,

Anyone want to chime in?  Im very intrested to see how this pans out..

Now I am concerned!  How did he get water in his battery box?  Has anyone else seen this?  I don't even have the battery cover hting that hooks onto the frame-I see it on most other ones.  Maybe I should stop the next time it rains on me.  Just call me the thread hijacker.

The stock Denso signal relay has two circuits, one of which goes to the ECU to determine forward motion for the signal auto-cancel function.  However there's no indication in your post that the ECU is damaged.

We recently had another member with a battery box full of water.  He had removed the inner fender liner between the back tire and the battery box, and so his battery box may (or may not) have filled with water off the rear tire, I don't recall.  See: http://rswarrior.com/forums/p/112132/919588.aspx

From your post I don't have other solutions except to dry everything out, be sure you have the top tray for the battery box that the ECU sits in, be sure you have the two rubber protectors that sit on each side rail under the seat, check every fuse, and then bit by bit visually search the wires in-and-from the battery box for an accessible wire that is A: not protected in a bundle and B: damaged or corroded (maybe even blue-green-ish). 

If the problem was a relay or sensor you'd probably get an error code - but its a big topic so can't be sure.

hi guys - horse and stable post - but when i got my warrior here in uk, the first thing i did was spray everything [bar the brakes!] with GT85 [the best motorcycle protector from water i've used] - had a bandit 1200 [2000] before [my son owns it now] and it was ridden 365 days a year - constantly sprayed engine with it thru winter and in frame joints and no rust or electrical faults - it smells very sweet when heat of engine steams it off leaving the ptfe film - so i'd try spraying electrics with some water repellant like this - ps i've learnt WD40 isn't kind to fork seals rubber but GT85 never gave a problem for 7 years - regards tom ba

pps - the suzuki bandit is reknowned for thin paint and salt corroding bolts etc so that GT85 is great stuff - do you guys in the states have it or is it under a different name? regards tom ba

Found this - have not used it but may give it a go:

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Our original product; GT85 is a general purpose cleaning/lubricating spray with PTFE.

PTFE or polytetrafluoroethylene was discovered in 1938 by Dr. Roy Plunkett at the DuPont research laboratories. PTFE was first marketed under the DuPont Teflon registered trademark

in the late 1940s. The molecular weight of Teflon can exceed 30,000,000 making it one of the largest molecules known. That’s why the surface is so slippery; virtually nothing sticks to it or is absorbed by it. No wonder Teflon was chosen for use on non-stick cooking pans.

With its CFC-free propellant, GT85 is environment-friendly and is ideal for anywhere non sticky lubrication is required.

THANKYOU FOR THE LINK!!! IT WAS THE SAME PROBLEM WITH CORROSION!!