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Home >> Toyota >> 2007 >> Prius Touring >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> SFI System >> DTC P1150 Coolant Path Clog of Coolant Heat Storage System >> Typical Enabling Conditions
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Typical Enabling Conditions

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not present None
Coolant heat storage system malfunction Not detected
Coolant heat storage water pump operation time 3 seconds or more
Variation in CHS tank coolant temperature and engine coolant temperature before and after preheating 2°C (3.6°F) or less
Engine coolant temperature 65°C (149°F) or more