OIL CONTROL VALVE (OCV) FOR CYLINDER DEACTIVATION [SKYACTIV-G 2.5 (WITH CYLINDER DEACTIVATION)]

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Purpose, Function

•  The OCV for cylinder deactivation supplies the hydraulic pressure demanded by the switchable HLA to switch the hydraulic transmission passage in the cylinder head during cylinder deactivation.

Construction

•  The OCV for cylinder deactivation is installed near the cam shaft.
•  The OCV for cylinder deactivation consists of a filter, valve, check valve, shaft, coil, and armature.
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Operation


Cylinder deactivation is not performed

1.  The shaft is pressed up by a signal from the PCM.

2.  By pressing up the shaft, engine oil flow from the engine oil solenoid valve is stopped and the drain port is opened.

3.  Engine oil entering from the switchable HLA is fed to the drain port.

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During cylinder deactivation

1.  The shaft is pressed down by a signal from the PCM.

2.  By pressing down the shaft, the drain port is closed and engine oil flow is stopped.

3.  Engine oil output from the engine oil solenoid valve is fed to the switchable HLA hydraulic passage.

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Fail-safe

DTC

Fail-safe
P0A0F:00
•  Flashes the i-stop warning light (amber) and inhibits engine-stop by operating the i-stop function.
P2090:00
•  Set the exhaust variable valve timing control to the maximum advanced position.
P2091:00