Ford Repair Questions? Ask a Mechanic for Answers ASAP
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Can I get your engine size so I can pull a wiring diagram for the turn signals?
Thank you for that information.
Provided all fuses and wiring are good, this problem is caused by a bad multifunction switch.
Here is the tests you can run to be sure..
Start by checking for battery voltage to the multifunction switch on the Light Blue wire with the ignition switch in the Run position from the electronic flasher relay. In addition, check for battery voltage on the White/Red wire which is fed to the multifunction switch for the hazard function. If both circuits show battery voltage from the flasher relay, ground either of the circuits through a standard 12-volt test light and look for the test light to flash indicating that the flasher relay is functional. (which I suspect it is because you have replaced it).
You can also, disconnect the multifunction switch and install a jumper wire between the LB wire and the Light Green/White wire to see if the left turn indicator works, thereby indicating a defective multifunction switch.
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