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Home >> Toyota >> 2005 >> Prius >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (SFI) - Diagnostics >> DTC P1120, P1122, P1123: Coolant Flow Control Valve Position Sensor Circuit Low/High >> Monitor Description >> Water Valve Operation
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Water Valve Operation

WATER VALVE OPERATION CONDITION

System Condition Valve Position Coolant Flow
Normal engine operation C Engine to Cabin heater
Preheat mode A Coolant heat storage tank to Engine
Coolant recovering (after engine stop) A Engine to Coolant heat storage tank
Coolant recovering (while engine is running) B Engine to Cabin heater and Coolant heat storage tank
Soak mode A Coolant heat storage tank to Engine