OIL CONTROL VALVE (OCV) [SKYACTIV-G 2.0, SKYACTIV-G 2.5]

id0110h3001600

Purpose, Function

• The OCV switches the oil passage to the hydraulic variable valve timing actuator to control the opening/closing period of the exhaust valve.

Construction

• The OCV is installed to the exhaust camshaft cap (No.1).

• The OCV consists of a spool valve which switches the engine oil passage and a plunger, coil, and return spring which operate the spool valve.

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Operation

At retard

• The spool valve is moved to the retard side by the signal from the PCM and engine oil is lead to the retard oil passage of the exhaust camshaft.

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At advance

• The spool valve is moved to the advance side by the signal from the PCM and engine oil is lead to the advance oil passage of the exhaust camshaft.

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Middle point maintenance

• The spool valve is moved to the closed position of the oil passage to the exhaust camshaft by the signal from the PCM.

• The construction is designed to supply a small amount of oil to the advance and retard oil passages even while the middle point is maintained, improving holding stability while at low oil pressure.

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Fail-safe

DTC

Fail-safe

P0014:00

•  Performs the exhaust variable valve timing control with a maximum cam advance request.

P0015:00

•  Performs the exhaust variable valve timing control with a maximum cam advance request.

P2090:00

•  Performs the exhaust variable valve timing control with a maximum cam advance request.

P2091:00

•  Performs the exhaust variable valve timing control with a maximum cam advance request.

DTC	Fail-safe
P0014:00	• Performs the exhaust variable valve timing control with a maximum cam advance request.
P0015:00	• Performs the exhaust variable valve timing control with a maximum cam advance request.
P2090:00	• Performs the exhaust variable valve timing control with a maximum cam advance request.
P2091:00	• Performs the exhaust variable valve timing control with a maximum cam advance request.