* Turn signals: The system uses the turn signal switch stalk (located on the steering column) to send signals to the appropriate flasher relay and then to the corresponding left or right turn signal bulbs. If a bulb burns out, the flasher relay usually increases its flashing rate to indicate a problem.
* Hazard lights: The hazard light switch (usually a separate button, possibly near the turn signal stalk) sends a signal directly to the flasher relay, activating both left and right turn signal lights simultaneously. Again, a bulb failure will typically cause a faster flash rate.
Therefore, there is no "sensor" to locate. Troubleshooting involves checking:
1. Bulbs: Start by checking the bulbs themselves to ensure they're not burned out.
2. Flasher Relay: This component controls the flashing rate. A bad relay can cause erratic flashing or no flashing at all. Its location varies by vehicle, so you'll need to consult your owner's manual or a repair manual.
3. Wiring: Damaged or corroded wiring can interrupt the signal. This is the most difficult to check and often requires a multimeter.
4. Turn Signal Switch/Hazard Switch: These switches themselves can fail internally.
In short, the problem is likely a failed bulb, relay, or a wiring issue rather than a sensor malfunction. You'll need to diagnose the specific issue by systematically checking these components.
