1. Check Fuse:
- Locate the fuse box in your vehicle, typically under the hood or in the driver's side footwell.
- Check the A/C cooling fan fuse to ensure it's intact and not blown. If the fuse is blown, replace it with a new one of the same amperage.
2. Inspect Wiring:
- Visually inspect the wiring harness and connections for the A/C cooling fan. Look for signs of damage, corrosion, or loose connections. Repair or replace any damaged or corroded wires.
3. Test Cooling Fan:
- With the ignition turned on, verify if the A/C cooling fan is receiving power. You can do this with a multimeter or a test light. If the fan is not receiving power, there could be a problem with the fan motor, relay, or wiring.
4. Check Cooling Fan Relay:
- Locate the A/C cooling fan relay in the fuse box or on the relay module.
- Check the relay terminals for corrosion and make sure the relay is properly seated.
- You can swap the A/C cooling fan relay with a known-good relay from another circuit to see if the problem persists.
5. Verify Ground Connections:
- Ensure the ground connections for the A/C cooling fan and related components are clean and secure. Remove any rust or corrosion from the terminals.
6. Test A/C Fan Motor:
- If you have access to a scan tool, you may be able to initiate an A/C cooling fan test. This feature varies by vehicle, so refer to your specific model's service manual.
- Alternatively, you can apply direct power to the A/C fan motor to check its functionality.
7. Check Cooling Fan Resistor:
- Some Chrysler vehicles have a cooling fan resistor that controls the fan speed. A faulty fan resistor can affect the fan's performance. Check the resistor for any signs of damage or wear.
8. Replace the Cooling Fan:
- If all the above steps fail to resolve the issue, you may need to replace the A/C cooling fan itself.
Remember, diagnosing and repairing electrical issues can be tricky. If you're not comfortable with electrical work, it's best to seek assistance from a professional mechanic or auto electrician.
