What is the reason for the open circuit of coolant pump 2?

[AngeloFitz]

The open circuit of coolant pump 2 means that there is a fault with a coolant pump, which needs to be checked or replaced. Coolant pump 2 is an auxiliary water pump located not far from the main water pump, used for continuous heat dissipation after the car is turned off. Check the wiring harness and the small water pump. It is necessary to go to a 4S shop for inspection and repair. Extended information: Wiring harness: The wiring harness is directly connected to the engine computer through a plug without a fuse. The water pump of this car is installed under the intake pipe. It is located at the interface between the engine and the transmission, below the intake pipe. Replacing the water pump requires removing the intake pipe. Coolant: Coolant is an indispensable part of a car engine. It circulates in the engine cooling system, carrying away excess heat generated during engine operation, allowing the engine to operate at normal working temperature. When the coolant is insufficient, it will cause the engine water temperature to be too high, leading to damage to engine components. Therefore, once the owner finds that the coolant is insufficient, it should be added in time.