Reply To: Where are the IAP sensors? – 2016 GT250R
NGK caps is what we all use , we dont have much faith in OEM caps , suzuki gets the same trouble with their caps sometimes, so NGK wins.
Also replace the coils if they haven’t already . Fresh CR8E again as they foul easy.
Stator unit , probably be your last item (it directly , i mean directly affects starting and general running etc.) – If its haywire at any point, the ECU will shut off or get grumpy to start. Probably flag an error code “no signal for pick up coil” etc eventually but if the stator is good, leave it alone for now.
The stator has 2 plugs . 1 is for charging (3 yellow wires) , does not affect starting unless fried (thus frying the battery and regulator etc if its shorting out)
other one is a 2pin plug = this is what the ECU wants from the moment you press start and general running all day. It can’t live without it.
Ignition Coils = ECU won’t know if the coil is failing , so it wont warn you , go and measure the coils for their primary and resistance OHMS as mentioned in service manual and report back.
O2 sensors are needed for ECU timing & fueling.
Your battery should be 12.8V when the key is out of the bike (turned off) , then a drop of 11v while crank may be tolerated but dropping below 9v will 100% trip the ECU to say “battery voltage too low”
Get another starter motor cable = Yes a starter motor cable for Hyosung specifically, connect it to the battery NEGATIVE and then connect the other part to the frame (unpainted part) = This starter cable is thicker, and can be used as extra ground for the bike. Do not connect it to starter motor! or anything postive. I really hope i made sense!