S40 2.4i L5-2.4L VIN 38 B5244S4 (2008)
5: Piston with slits
6: Return spring
A: Channel leading to chamber A1 in the CVVT unit
B: Channel leading to chamber B1 in the CVVT unit
C: Channel for oil (pressure)
D: Channel for oil (return)
The camshaft reset valve controls the oil flow to the continuous variable valve timing (CVVT) unit. The engine control module (ECM) uses a pulse
width modulation (PWM) signal to control the valve. See also: Design See: Description and Operation/Engine Control Module (ECM)/Design
Control takes place as follows when deploying the camshaft