Cabin Heater Coolant Diverter Valve (Hybrid equipped)
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
The default state of the cabin heater coolant diverter valve is de-energized, placing the system in combined loop mode. Coolant flows out of the engine, then back, in the following order:
- cabin heater coolant pump
- cabin coolant heater
- cabin heater coolant temperature sensor
- heater core
- cabin heater coolant diverter valve
- thermostat housing
- main electric water pump
When energized by the PCM the cabin heater coolant diverter valve places the system into the isolated loop mode. Coolant flows out of the valve, then back, in the following order:
- cabin heater coolant pump
- cabin coolant heater
- cabin heater coolant temperature sensor
- heater core