How can you tell if a 2002 Jeep liberty water pump is circulating water?

To check if a 2002 Jeep Liberty's water pump is circulating water, start the engine and let it reach operating temperature. Open the radiator cap (if safe) and look for movement in the coolant; you should see it circulating. Additionally, feel the upper radiator hose; it should become warm as coolant flows through. If the hose remains cold and you don't see coolant movement, the water pump may not be functioning properly.