1. Check the Bulbs: This is the most common cause. Burned-out bulbs in the turn signal and brake light circuits can cause the entire system to fail or malfunction (though usually just the affected side). Check all four turn signal bulbs (front and rear on both sides) and the brake lights.
2. Multi-Function Switch (Turn Signal Stalk): The switch itself can fail internally, preventing the signals from activating. This is a common point of failure and often needs replacement.
3. Hazard Switch: If only the hazard flashers are not working, the hazard switch itself could be faulty. Try operating the hazard switch repeatedly to see if it "wakes up" (Sometimes a little wiggling can help diagnosis).
4. Turn Signal Relay: Your Cirrus likely has a relay that controls the flashing action. A faulty relay will prevent the signals from flashing. You'll need to locate the relay (consult your owner's manual or online repair guides) and test it or replace it. A simple swap with a known good relay of the same amperage is a good diagnostic test.
5. Wiring and Connections: There could be a break or corrosion in the wiring harness anywhere between the switch, relay, and lights. Carefully inspect the wiring, paying particular attention to connectors at the lights and the switch. Look for corrosion, broken wires, or loose connections.
6. Body Control Module (BCM): While less likely, a faulty BCM can cause issues with various electrical systems, including turn signals. This is a more complex problem and often requires professional diagnosis and repair.
7. Grounding Issues: A poor ground connection can disrupt the electrical flow. Check the ground points for the turn signal system.
Troubleshooting Tips:
* Test with a multimeter: A multimeter can help you verify voltage and continuity at various points in the circuit, helping pinpoint the problem.
* Consult a repair manual: A repair manual specific to your 2000 Chrysler Cirrus will provide detailed wiring diagrams and troubleshooting procedures. Online resources like Haynes or Chilton manuals (often available digitally) are excellent resources.
* Professional Diagnosis: If you're not comfortable troubleshooting electrical systems, take your car to a qualified mechanic. They have the tools and expertise to diagnose and repair the problem efficiently.
Remember safety first! Don't work on your car's electrical system if you're not comfortable doing so. Always disconnect the negative battery terminal before working on any electrical components.
