A control module may include a cam phaser control module, a cam phaser oil
pressure determination module, and a system oil pressure prediction
module. The cam phaser control module may control an oil control valve
(OCV) to control an oil flow to a cam phaser. The cam phaser oil pressure
determination module may be in communication with the cam phaser control
module and may determine a first engine oil pressure at a location
between the OCV and the cam phaser when the OCV is in a open position.
The system oil pressure prediction module may determine a second engine
oil pressure at a location between the OCV and an oil pump outlet based
on the first engine oil pressure.