2015 Injector fuse (FI 2) blowing - Solved

[Alan]

Hi All FYI in case others have similar problem which I solved !
My 2015 new model wouldn't start after stopping at the shops after a longish ride. Starter motor turned over but no life. Engine light came on. Left it for a while and came back with tools etc. Checked fuses and the 10a FI2 fuses was blown. New fuse, drove home, stopped n started 20 times ok. As a check I pulled the fuse and got engine light on. Reading service manual you could read error codes if ignition on with side stand down - long flash first number shorter flashes second number eg 2 long 3 short = error code 23. I got 5 codes, 4 injector errors and O2 sensor. (Attached error codes from VFR800).
Week later off for a ride, stopped for fuel. Exactly same thing, fuse blown, had a pocket full just in case !
Changed fuse rode home, stopped & started another 20 times ok. Sort of wondered if it needs to 'rest' for a few minutes as in shops, fuel so gave it 5 minutes and fuse blew again. Thinking it was a heat issue went for the O2 sensor intending to disconnect and measure resistance - in looking found the problem, one of the white wires (sensor heating) had rubbed through the insulation and was shorting on an'edge' of the engine ! Not sure re heating maybe the wire sort of expanded/curved as it got hot & cooled !
Sensor is in exhaust at rear of engine. Glad I found it so easily and hope this can help others.

Alan, Marbella

[Skids]

Originally Posted by Alan

Hi All FYI in case others have similar problem which I solved !
My 2015 new model wouldn't start after stopping at the shops after a longish ride. Starter motor turned over but no life. Engine light came on. Left it for a while and came back with tools etc. Checked fuses and the 10a FI2 fuses was blown. New fuse, drove home, stopped n started 20 times ok. As a check I pulled the fuse and got engine light on. Reading service manual you could read error codes if ignition on with side stand down - long flash first number shorter flashes second number eg 2 long 3 short = error code 23. I got 5 codes, 4 injector errors and O2 sensor. (Attached error codes from VFR800).
Week later off for a ride, stopped for fuel. Exactly same thing, fuse blown, had a pocket full just in case !
Changed fuse rode home, stopped & started another 20 times ok. Sort of wondered if it needs to 'rest' for a few minutes as in shops, fuel so gave it 5 minutes and fuse blew again. Thinking it was a heat issue went for the O2 sensor intending to disconnect and measure resistance - in looking found the problem, one of the white wires (sensor heating) had rubbed through the insulation and was shorting on an'edge' of the engine ! Not sure re heating maybe the wire sort of expanded/curved as it got hot & cooled !
Sensor is in exhaust at rear of engine. Glad I found it so easily and hope this can help others.

Alan, Marbella

Thanks for that Alan, could be very useful for some. 

Glad you got it sorted.

[Bruggen]

Thanks Alan, worth checking my 2016 for any rubbing. The fuse also feeds the fuel pump relay so that will be why it wouldn't start.

[Alan]

Yes correct the fuel pump relay is on same fuse and you can hear that the fuel pump doesn't pressure up when you turn the key as usual. I quickly checked a friends Crossrunner and it looked similar to mine in terms that the heater wire was very close to the engine so advise others check as a preventative measure it only takes a few minutes- I'll see if I can get a photos some time. I cable tied some extra insulation over the white wires and cable tied this to another cable in same area to hold it away from the engine, guess tape would do a similar job.

Alan.

Originally Posted by Bruggen

Thanks Alan, worth checking my 2016 for any rubbing. The fuse also feeds the fuel pump relay so that will be why it wouldn't start.

[SXHighwayman]

Having just got my 2016 CR I thought I'd check this. Did you ever take a photo?

[Alan]

Will do and post ! A

[SXHighwayman]

Cheers Alan,

I thought as I'm getting to know my bike anyway may as well avoid a potential pitfall.

Thanks 

[Alan]

Took a while for me to read and understand I needed another account to upload photos. See if this works !


Anyway I couldn't get a good picture under the bike and I've covered the damaged wire with extra insulation !

You can find the O2 sensor by lying on the left of the bike and looking between the engine sump and the exhaust, its the only thing with electrical connections on top of the exhaust under the engine - its cylindrical with a hex flats on. One of the white wires had rubbed through the insulation from contact with the engine.

Alan