Troubleshooting the Ford Explorer Turn Signal Switch
Light bulbs are okay, sockets are working, flasher unit is fine; so, what could be the problem? When the parts of the turn signal are performing, then it's probably time to diagnose the Ford Explorer turn signal switch because this is probably the culprit. Here are some troubleshooting tips to help you how to analyze a faulty turn signal switch.
Non-functional turn signal lights
If the turn signal lights on your Ford Explorer do not function at all, then it's probably because of a defective turn signal switch. The best thing to do is to work with a wiring diagram so that your troubleshooting process won't be too troublesome. Look for the wire that's in charge of carrying the current from the flasher to the switch and turn on the right signal. You can use a test light to search the back side of the connectors. Turn on the left signal if it works. If these have failed to turn the lights on, then you better get the switches replaced with new ones.
Stick the key into the ignition to switch on the car accessories. Check if the lights go on by pushing the turn signal switch in both direction and study if the light on the dashboard blinks or stays on without even blinking. If the light blinks, get out of your car and check if the bulbs on the front and rear blink as well. However, if it stays on but does not blink, then the turn signal flasher is the culprit and this must be replaced.
If the lights on the dashboard do not illuminate when you turn the turn signal switch on both directions, then there must be a wiring issue. Inspect the fuse in the fuse block, which is located on the left of the steering column, underneath the dashboard. You can also find one on the driver's side, which is on the side of the dashboard that's facing the door. If you think that it's just a blown fuse, then you can just simply replace it with the same amperage. But if not, then the turn signal switch is the problem and this must be replaced with a new one.