Easy step by step guide on how to repair an automotive turn signal system that is not working, this information is presented in the order of probability and pertains to most vehicles.
Difficulty Level - 4
Begin with the vehicle on level ground, in park with the engine "OFF".
Step 1 - Turn the ignition key to the "ON" position, (do not start the engine) this will power up the electrical system for testing.
Step 2 - Locate the power distribution center (PDC) or fuse panel to check
all system fuses.
Learn more
- To locate the fuse consult the owner's manual or search
Google Images.
Step 3 - When a turn signal flasher or relay fails the blinkers will not
operate or come "ON", but not blink. A direction signal system is designed to operate
with a flasher or blinker unit which interrupts the signal which created the blinking
action.
Learn more - Locate turn signal flasher in
Google Images.
Step 4 - When a turn signal switch fails the system will short or go "open"
causing the blinker not to operate. Use a test light to test input and output power
circuits using a wiring schematic.
Learn more - Find a wiring diagram in
Google Images.