The first and easiest thing to check is the fuse box to see if the fuse controlling the turn signal is blown. If the fuse is blown, replace it with a new fuse of the same amperage.
Turn signal switch issue
If the fuse is not blown, the problem could be with the turn signal switch itself. The turn signal switch is responsible for sending the signal from the turn signal stalk to the turn signal lights. If the turn signal switch is faulty, it will not be able to send the signal properly, which will cause the turn signal lights not to work.
Turn signal relay issue
Another possible cause of the turn signal not working is a faulty turn signal relay. The turn signal relay is responsible for controlling the flashing of the turn signal lights. If the turn signal relay is faulty, it will not be able to properly control the flashing of the turn signal lights, which will cause them to not work properly.
Wiring issue
If the fuse, turn signal switch, and turn signal relay are all working properly, the problem could be with the wiring. The wiring that connects the turn signal switch to the turn signal lights may be damaged or disconnected, which will prevent the turn signal lights from working properly.
Light bulb issue
Finally, the problem could also be with the light bulbs themselves. If the light bulbs in the turn signal lights are burned out, they will not be able to illuminate, which will cause the turn signal lights not to work properly.
