There are two methods to check whether the silicone fan clutch operates normally:

1. After the car engine cools down, check whether there is residual silicone oil between the silicone fan clutches. If there is a large amount of residual silicone oil, it indicates that the silicone fan clutch is not working properly.

2. The thermal inspection method is to check the operation status and sound of the silicone fan clutch after the engine is started and the vehicle's water temperature is close to 90 degrees Celsius. If the fan noise is obvious, it indicates that the silicone fan clutch is not working properly.