When air is taken away it closes the clutch and the fan turns with engine speed.
Freightliner cascadia fan clutch solenoid.
Very simple repair mine was 128 00 yours may be more or less.
2010 freightliner cascadia fan clutch stays on replaced solenoid and still stays on i put power and ground on the connector to test fan clutch and it engages correctly there is voltage going to the so read more.
The ecm will not command the solenoid off until it reaches 212 degrees 220 degrees f or if oil temp and intake temps run high as well.
How to install a manual fan clutch switch on a freightliner cascadia dd15 2012.
Freightliner and detroit genuine parts deliver unmatched performance reliability safety and durability.
The engine should not reach anything hotter than 225 that is the max engine temp that detroit wants it to run.
Fan clutch problems we do not want to know or except the fact and face the damages because it can get to be complicated and very expansive but most importan.
Engine fan stays on all the time ac pressure is good swap the solenoid for the fan nothing change looks the truck is asking for fan need some troublesh read more.
I show how to replace a bad fan solenoid on my freightliner century 2007.