How to Solve Honda Accord Flasher Relay Problems
Flasher relays control the electricity flow to your signal lights by cutting it off intermittently, causing the signal lights to flash. Without this device, you would have malfunctioning turn signal lights and hazard lights, leaving you unable to send signals to other drivers. When such problems crop up, be sure to troubleshoot them as soon as possible so that the issue can be fixed immediately. Here are some problems with the Honda Accord flasher relay that you should know of:
Flasher relay clicks quickly even without being prompted but works when turn and hazard signals are switched on
One cause of this problem could be a malfunctioning hazard or turn signal switch. The electrical components inside these switches could have worn down, making the switches lose their resistance and allowing tiny amounts of electricity to flow through them. This flow of electricity could be what is causing the clicking noise. One easy test would be to remove the switches one by one to see if it will make the sound go away. If the clicking stops after removing a certain switch, then that switch is the one malfunctioning. Replace it immediately in this case. If the switches all check out and work perfectly, then inspect the relay next. The easiest way to do that is to remove the old relay and replace it with a new one. If that removes the clicking noise, then you've just solved your problem. If the clicking noise still refuses to go away, then check the wiring instead and look for anything that is damaged or broken. Replace this as necessary.
Left turn signal does not initiate but everything else works
If one of the flashing lights refuses to work, try checking out the bulb first, which in this case is the left turn signal light bulb. Open up the light assembly and inspect the bulb. If the filament looks burned out, replace the light bulb with a new one. If the bulb looks fine, test out the relay by replacing it with a new one as mentioned in the last problem. If the turn signal works after doing so, keep the new relay in and throw the old one away.
Testing the relay with an ohmmeter
Another way to test the relay is with an ohmmeter. This will accurately test the electricity flow through the unit. Just connect the probes to two different terminals before checking the readings on the meter. You should get a zero reading, which means that no electricity is flowing between the terminals.