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Home >> Jaguar >> 2019 >> XJR575 >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Supercharger Cooling - V8 S/C 5.0L Petrol -- XJ/X351 >> Supercharger Cooling - V8 S/C 5.0L Petrol >> Description And Operation >> System Operation and Component Description >> System Operation

System Operation

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Electrical power for the charge air coolant pump is supplied from the charge air coolant pump relay in the EJB (Engine Junction Box). When the charge air coolant pump relay is energized by the ECM (Engine Control Module), it connects power from the battery to the charge air coolant pump. Operation of the charge air coolant pump is controlled with PWM (Pulse Width Modulation) signal by the ECM. The charge air coolant pump relay is energized continuously while the ignition is on.

When the charge air coolant pump is running, coolant flows from the pump outlet through the charge air coolers, the charge air radiator and back to the pump inlet.

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