Variable and 2-3-4 Clutch Boost Valve
WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
PCS 2 signal fluid pressure acts on a differential area of the variable hi and 2-3-4 clutch boost valve, moving the valve against variable hi and 2-3-4 clutch boost valve spring force to regulate VH 234 clutch/B cooling feed fluid into the VH 234 clutch feedback circuit. As PCS 2 signal fluid pressure is increased to a given value, the variable hi and 2-3-4 clutch boost valve opens the VH 234 clutch feedback circuit to exhaust. This results in the variable hi and 2-3-4 clutch regulator valve moving to the full feed position, sending full VH 234 clutch feed pressure (full line pressure) to the variable hi and 2-3-4 clutch.