Theory Of Operation
WARNING: This page is about a different car, the 2025 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
The Coolant 3-Way Valve is located in the Engine High Temperature Cooling Loop downstream of the Engine Coolant Thermostat and upstream of the High Temperature Auxiliary Pump. The Coolant 3-Way Valve is wired to, and controlled by the Hybrid Control Processor (HCP). The HCP monitors the Coolant 3-Way Valve and circuits for failures. The Hybrid Control Processor (HCP) is internally located in the Power Inverter Module (PIM) and is not serviced separately