V8 VCC Control (page 2 of 3)

ENGINE MANAGEMENT SYSTEM – V8

18-2-46 DESCRIPTION AND OPERATION

As the Pulse Width Modulation (PWM) increases on the control signal, the valve progressively opens the advance oil 
port and proportionately closes the retarded oil port.

Mid Position

Oil pressure pushes the piston toward the advance position. Simultaneously the oil pressure on the retarded side 
(rear) of the piston is decreased and directed to the vent port in the solenoid valve and drains into the cylinder head.

M18 0832