Hydraulic cooling fan 1uz-fe ls400

[foursa]

Hi,
I run a 1uz-fe in a Land Rover defender. the engine was transplanted from an 1997 LS400, complete with hydraulic cooling fan. my question is: Is the hydraulic solenoid a proportional solenoid or only on/off ? The fan is either at idle or full speed. Will I be able to vary the hydraulic fan speed by caring the voltage over the solenoid?
Thks

 

[foursa]

Hi,
I run a 1uz-fe in a Land Rover defender. the engine was transplanted from an 1997 LS400, complete with hydraulic cooling fan. my question is: Is the hydraulic solenoid a proportional solenoid or only on/off ? The fan is either at idle or full speed. Will I be able to vary the hydraulic fan speed by caring the voltage over the solenoid?
Thks

Apologies spelling; finger trouble.
will I be able to vary the hydraulic fan speed by changing the voltage over the solenoid?

 

[gloverman]

The solenoid is normally controlled via a pwm signal.