I can now rule out:
Injector, fuel filter, fuel pump.
I ran the fuel line direct to the injector by-passing the filter. No improvement
I've started the bike with the fuel cap open to rule out a blockage in the breather. No improvement
I by-passed the fuel pump control by powering the fuel pump directly from the battery and that DID work. This rules out the fuel pump and injectors.
I disconnected what I think are the Throttle Valve Switch and Idle Control Device which are the two sensors on the main throttle body. Again the bike DID work.
I've been visually inspecting the wiring loom and can't see any problems there.
Is there a way to test if a sensor is working or not without purchasing a replacement? Is there a relay I should also be checking?
Oh, and I have done the throttle reset by opening the throttle wide three times and waiting 20 seconds. I have just replaced the throttle cable so it was possible there was an issue here.
Just in case it is relevant. Using my GS911 I tested the radiator fan and noticed it no longer worked. When I applied a direct current to it from the battery it switched on fine. I'm retesting this as a different problem but since it's electrical it could be related.
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