2. Check the relay. If the fuse is not blown, the next thing to check is the relay that controls the climate control fan. The relay is also located in the fuse box under the hood. To test the relay, remove it from the fuse box and use a multimeter to check for continuity between the terminals. If there is no continuity, the relay is bad and needs to be replaced.
3. Check the wiring. If the fuse and relay are both good, the next thing to check is the wiring. Look for any loose or damaged wires that could be preventing power from getting to the climate control fan. If you find any loose wires, reconnect them. If you find any damaged wires, repair them or replace the wiring harness.
4. Check the fan motor. If the wiring is all good, the last thing to check is the fan motor itself. To test the fan motor, remove it from the car and connect it directly to a power source. If the fan motor does not run, it is bad and needs to be replaced.
