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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 241 (Electric Cooling System Fans) >> Description & Operation >> Notes

Description & Operation: Notes

WARNING: This page is about a different car, the 2003 Toyota Prius and 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.

Fans are controlled via Engine Coolant Temperature (ECT) switch/sensor. For cooling fan operating conditions, see COOLING FAN OPERATING CONDITIONS  table.

COOLING FAN OPERATING CONDITIONS

Condition Fan Operation (Fan Speed)
Engine Coolant Temperature 190°F (88°C) Or Less Rotate (Low Speed)
Engine Coolant Temperature 208°F (98°C) Or More Rotate (High Speed)
Refrigerant Pressure Is Less Than 220 psi (15.5 kg/cm2 ) Rotate (Low Speed)
Refrigerant Pressure Is 220 psi (15.5 kg/cm2 ) Or More Rotate (High Speed)