Turn signal switch has 1 hot wire per ea. side.
One of your turn signal bulbs is burned out. Either the front or the back.
flasher will not flash when circuit is open or shorted replace left front turn signal bulb
front bulb blown
You have an electrical fault
If one turn signal is flashing fast it is to warn the driver they need to replaced either the front or back signal bulb.
if the front signal is working and the back doesn't, the light is probably blown.
Check the back signal light. Usually if the front blinks fast the back is out or need to be replace. Vice versa
Either the front or back turn signal bulb is out
Turn on the RIGHT turn signal then get out of the vehicle and see which lights are flashing. Count the number of bulbs that are flashing on the back of the vehicle and on the front. Then turn on the LEFT turn signal and check again. Usually a rapid turn signal indicates that one or more bulb has failed.
The Java back-end and the Flash front-end will communicate through sockets.
When any turn signal on a vehicle flashes more rapidly than normal, then that means that a signal light on the side that is blinking is burned out. It could be either the front of back. You should check your signals to see if one is burnt out. The brake however should not affect this - you could have a short.
try the turn signal switch, the connector on it, the connections to the signal lights, the wiring, etc. On some vehicles, the turn signal switch controls front and back blinkers separately