Hi All I have a 2017 Street Twin, recently It appears to be overheating, no alarms but stalls when hot and wont start until it cools. I haven't seen the fan running even when leaving the bike to tick over, in-fact it will stall if left. Im looking to check the the fan and its circuitry, but cant find an electrical drawing or locate the fan relay. Any help and advice would be greatly appreciated.
I've also got a 2017 ST but never had that problem and the fan does come on when things heat up. Perhaps you need to buy the relevant Haynes, which will give you the circuit diagram(s) you're looking for.
In my opinion, the alarm light should light up before the engine overheats and stalls. It is difficult to explain how you had no alarm.
If the high temp warning light isn't coming on and the fan isn't cutting in are you certain the bike is actually overheating or maybe is something else causing the hot stalling/starting issue? If the bike does overheat I would expect coolant to be blown out of the expansion tank.
