Toyota Camry Hybrid AHV40 Manual page 206

EG-18
JCOOLING SYSTEM
1. General
D The cooling system uses a pressurized forced circulation system with an open air type reservoir tank.
D Due to the introduction of the electric water pump for the air conditioning system, the coolant piping and
coolant hose routing have been changed on the '07 Camry Hybrid model.
D By increasing the cooling fan motor output (80 W + 80 W ! 120 W + 120 W), the cooling performance
has been ensured.
D A V-ribbed belt is used to drive the water pump.
D A thermostat with a bypass valve is located on the water inlet housing to maintain suitable temperature
distribution in the cooling system. This prevents sudden jumps in temperature while the engine is warming up.
D The flow of the engine coolant makes a U-turn in the cylinder block to ensure a smooth flow of the engine
coolant. In addition, a bypass passage is incorporated into the cylinder head and the cylinder block.
D Warm water from the engine is sent to the throttle body to prevent freeze-up.
D TOYOTA Genuine SLLC (Super Long Life Coolant) is used to extend the maintenance interval.
Bypass Passage
Water Pump
" A
Water Circuit
Bypass Passage
Water Pump
Thermostat
ENGINE - 2AZ-FXE ENGINE
Cylinder Head
Cylinder Block
Radiator
Throttle Body
To Electric
Water Pump
To Radiator
From Radiator
Electric Water Pump
Heater Core
Reservoir
Tank
Throttle
Body
02HEG09Y
02HEG10Y