In a VCT system having a feedback loop including a sensed signal and a set point, a method is provided, which includes the steps of: determining a switch variable which is related to the sensed signal and the set point; computing the switch variable; and according to the value of the switch variable, controlling the operation of an on/off two position solenoid that controls the flow of a control fluid flowing within a VCT phaser. Thereby the control fluid either flows in one direction or another direction by means of using a two-position ON/OFF solenoid for actuating a spool valve which controls the flow direction with the VCT phaser.