(750 seca) Big Red Warning Light comes on while riding and stays on

Hi y’all,

My wonderful big red warning light comes on and stays on, it brings with it every category in the lcd display.
Neither of my two buttons will make it go away.
So I put some fuel in the tank. Once I got home I tried turning it off and on again, still the same problem.
Does anybody have some idea or suggestions?

Cheers

 

Start with your basics, did you check the oil level?

 

If the warning light is not flashing and all indicators are displayed then the CMS has switched back to standby mode just like when you first turn the key on, stall the bike, or kill the ignition when putting the side stand down.

So if you started out normal and this occurred during the ride you either lost your charging system or the associated wiring to the CMS (Computer Monitoring System)

So this implies it has changed to a hard fail. On US bikes this same leg of the charging system is applied to the Headlight relay and energizes it when the bike starts. I am not sure if this applies down under.

However, it will still use the charging system to initiate the CMS and make it active; a white wire on the 9 pin connector. You can check the voltage there or start with verifying the charging system is working by measuring voltage across the battery. When the bike is running and revved a fully charged battery will read 14.5 +/- .3 VDC at 2000 RPM and up.

 

Thank you Rooster53, your advice is worth its weight in gold.

I followed your instructions and started with the easy stuff and checked the voltage across the battery terminals under 2000 rpm, showing something over 13 volts. Great, the bikes still charging the battery. Next I opened up the headlight box and found the 9pin plug and proceeded to pry it apart. This is where I would turn the bike on and see what happened then turned it off then plug the connection back up again. When I turned the bike on it would run its sensor check then switch off the display as normal. Great, normal is good.
I decided to leave it there and pack it up.
Come Monday (today) I rode to work and back again with no warning lights coming on during the journey. Fantastic.
I really appreciate the time you took to write your instructions for me to check the CMS cables and where to find them. I had a feeling it would be as simple as unplugging it and plugging it in again.
I feel that my motorcycle is in mechanically good shape, but the electrical is its weakest link.

 

A bit of Caig Deoxit D5 on the connector contacts will help clean things up.

 

Cheers, yeah I must admit the problem still occurs, but goes away sometimes too. I will investigate further. It is annoying problem

 

Wow!
That stuff sounds magic.
Buying some now also!

https://caig.com/deoxit-d-series/

 

Hi guys, I put the project off till the bike wouldn’t start right before the Christmas break. So I stored the bike under the house until I had the time to really deal with it.
I took the pipes off, drained the oil, took the battery out, very low on charge.
The muffler had a few holes so I welded them up. I charged the battery up which was probably the reason why it wouldn’t start.
I replaced the oil with stuff I had under the house, I think 15w 40, instead of 20w 40.
So I should drain the oil again soon and replace the filter while I’m at it.
Anyway, I started the process Rooster53 suggested, putting my volt meter across the white wires in the 9 pin connector.

I put this off for a while because I didn’t know what I was doing. But it really wasn’t hard to figure out. I jammed one probe into the white connector and the other I put on some bare metal bolt on the shocks.
But there are three wires? I test each one, two are the same voltage at 6.3 and one is much much lower like 30mv. I decide to follow the cables and quickly realise they aren’t coming from the rectifier but going to it, so I went the opposite direction testing each side of the connectors until I find a number that matches the other two cables. There we have it, a corroded connection. I didn’t have any contact cleaner, I just used a little file and gave it a few scuffs. As I close the connections I felt a satisfaction that I knew I had done good, found the problem, the power to the cms. Which must also be the reason for the battery being flat.

With the bike reassembled, I rode to work this morning with no warning lights. How good it feels to be normal.

 

Almost a month has gone by and the bike is still running great.