is the Speedo Sensor is operating, or NOT.
With the bike running down the road, or jacked up on a lift.
- Start the bike.
- Activate either signal.
- Put the bike "IN" gear, allow the rear tire to spin.
- See "if" the signal automatically cancels after a minute or two.
fyi: "IF" the bike set still and NO motion in the rear wheel/trans. The signals will "Stay" activated and NOT Self Cancel.
However, w/ motion within the rear tire/trans, detected by the speedo sensor. This tells the controller module: That the bike is now in motion and to deactivate the turn signals. (Self Canceling Signal Operation.)
If the signal cancels, then you issue is elsewhere.
If the signal DOESN'T cancel, then the Speedo Sensor has most-likely gone south.