Thruxton 900 Non-starting Issue

Hi Gus. Think that 12v voltage sounds a bit low for starting a Triumph with EFI. From experience you won't get much of a response from the bikes brain below 12.8v.
How old is the bike / battery. This cold weather will kill an untended battery stone dead.
First thing I do after a ride is connect to an intelligent trickle charger.

 

I had similar issue on my 2012 Bonneville, to prove battery, I jump started from another battery. A 4 year old battery is probably near the end of its time!
Although it shows 13.2v there may be very little current stored.
Triumphs seem very fussy about voltage

 

Zero response to turning the key? You mean no lights, no neutral light etc?

 

no response at all...... main fuse? knackered ignition switch? corroded earth? even with a near dead battery I would expect the brake light to work.

 

That is true!
The fact that it has been left for 3 weeks in the lowest temp this year, methinks, corrosion somewhere or battery?
I would try jump starting before spending money............

 

Fuses 8 & 10 are position / parking lights looking at my manual (Haynes).
Not sure why that would stop you starting the bike

 

Maybe checking your tyres might help. What psi are you using?

 

Going back to square one.......

If you switch on but have no ignition lights etc., you either have a totally dead battery or an ignition switch/main fuse problem.

Step 1 is remove the battery and walk it to a local garage who will have a load tester. It will indicate amperage under load rather than mere volts.
Step 2 Once you have proved the battery is ok and checked the fuse I would switch ignition on and check for current from the +ve low tension side of your coil to the frame (earth). You should get near battery voltage. The main earth strap is on the underside at the back of the gearbox next to the swingarm. This will prove everything up to the starter circuit.....but you should be seeing instrument and headlights as well.
Step 3 is ignition switch terminals. A good blast of WD40 in the keyhole first .......
If you get this far with no joy come back for Step 4!

 

It’s always the simple fix!! Great news but I’d keep an eye on that one as you don’t know what’s happening inside there.

 

Those switches hate water. Contact cleaner is better than WD40 for cleaning but WD40 is a better lubricant and protector. Don’t forget the WD stands for water displacement.........

 

I relocated my ignition switch to the left side under the tank so it’s protected when on the side stand

 

Try ACF50 down the barrel