How do you Test your Volvo XC90 Cooling Fan Relay
Download as PPTX, PDF
0 likes527 views
The operation of your Volvo XC90's cooling fan is regulated by a relay. If the relay fails, it would make your car's cooling system inefficient, causing the engine to run hot and abruptly cease operation. So, you have to replace it on time.
How do you Test your Volvo XC90 Cooling Fan Relay
- 1. How Do You Test Your Volvo XC90 Cooling Fan Relay?
- 2. To keep the engine temperature stable, modern cars employ liquid-cooling systems.
- 3. It works by continually circulating coolant between the engine and radiator.
- 4. The coolant absorbs heat from the engine and moves to the radiator to dissipate it.
- 5. The cooling fan, when activated facilitates the heat exchange process.
- 6. Its operation is controlled by the ECU employing a relay.
- 7. Whats a cooling fan relay and what does it do?
- 8. Its an electromagnetic switch that regulates the cooling fan operation.
- 9. Its of the following kinds:- Open relay- has an open armature Closed relay- here armature is closed Dual relay- has both open and closed armatures
- 10. Where is the coolant fan relay located?
- 11. In general, you can find it in the engine compartment.
- 12. In some cases, it sits next to the coolant fan assembly.
- 13. Symptoms of a bad cooling fan relay in Volvo XC90
- 15. An overheated engine is by far the most obvious sign of a bad cooling fan relay.
- 16. So, if the temperature gauge is reading high, consider inspecting the cooling fan relay in your car.
- 17. If the relay has some technical flaws, get it replaced right away.
- 19. As we discussed earlier, the operation of the cooling fan is regulated by a relay.
- 20. If the relay stops working, and so does the cooling fan.
- 22. The cooling fan is supposed to stop working once the engine attains optimal temperature.
- 23. However, if it stays on, theres a chance that you have a bad cooling fan relay.
- 25. A faulty cooling fan relay can turn on one or both of the following warning lights:- Check engine light Temperature warning light
- 26. Volvo XC90 cooling fan relay failure- Causes
- 27. Listed below are a few reasons why the cooling fan relay of a vehicle may fail:- Defective controller Electric short-circuit Blown fuse Installation error Wiring issue
- 28. How to test a cooling fan relay?
- 29. First locate your Volvo XC90s cooling fan relay. Then, measure its resistance.
- 30. The resistance of a normal cooling fan relay stays between 40 to 80 ohms.
- 31. Wrapping Up
- 32. A faulty cooling fan relay can make your cars engine run hot and abruptly cease operation. So, get it replaced on time.