Toyota 1 MZ–FE Manual page 345

EG2–345
1MZ–FE ENGINE – COOLING SYSTEM
ELECTRONICALLY CONTROLLED HYDRAULIC COOLING FAN
SYSTEM
Description
In this system, the cooling fan ECU controls the hydraulic pressure acting on the hydraulic motor,
thus controlling the speed of the cooling fan steplessly in response to the condition of the engine
and air conditioning.
System Circuit