Clutch water pump, control system thereof, and control method thereof

A control method of controlling the clutch water pump defined in claim 1, comprising:

• operating the clutch water pump if engine rotation speed exceeds a predetermined standard value, if coolant temperature exceeds a first predetermined value, if a heater switch is on, or if a coolant temperature sensor is out of order,
• operating the clutch water pump in a first operating condition if the engine rotation speed is lower than the predetermined standard value and the coolant temperature ranges from the first predetermined value to a second predetermined value, wherein the first predetermined value is higher than the second predetermined value,
• operating the clutch water pump in a second operating condition if the engine rotation speed is lower than the predetermined standard value and the coolant temperature ranges from the second predetermined value to a third predetermined value, wherein the second predetermined value is higher than the third predetermined value, and
• operating the water pump in a third operating condition if the engine rotation speed is lower than the predetermined standard value and the coolant temperature is lower than the third predetermined value,
• wherein the coolant temperature sensor is configured to detect the coolant temperature supplied to the clutch water pump.