OIL CONTROL VALVE (OCV) [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT CYLINDER DEACTIVATION)]

id0110s9001600

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 oil passage even while the middle point is maintained, improving holding stability while at low oil pressure.

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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. (Vehicle with i-stop)

P2090:00

• Set the exhaust variable valve timing control to the maximum advanced position.

P2091:00

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