Mazda CX-5 Service & Repair Manual: Oil Control Valve (OCV) [Skyactiv G 2.0]

Mazda CX-5 Service & Repair Manual / Steering / Linkage, Power / Oil Control Valve (OCV) [Skyactiv G 2.0]

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.

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.

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.

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.

Fail-safe


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

Oil Control Valve (OCV) Removal/Installation [Skyactiv G 2.0]

WARNING: A hot engine can cause severe burns. Turn off the engine and wait until it is cool before servicing. 1. Disconnect the negative battery cable.. 2. Remove the plug hole plat ...

Power Steering Malfunction Indicator Light

Purpose The power steering malfunction indicator light warns the driver that there is a malfunction with the electric power steering (EPS) system. Function If there is a malfunc ...

Other materials:

Warning/Indicator Lights
Warning (Display Indication) Message information such as system operations or malfunctions is indicated in the display. Check the vehicle condition or have the vehicle inspected at an Authorized Mazda Dealer according to the indication. Brake System Warning Light This warning has th ...

Washer Motor Inspection
1. Disconnect the negative battery cable.. 2. Set the front over fender aside.. 3. Set the mudguard (RH) aside.. 4. Remove the front bumper.. 5. Disconnect the washer motor connector from the washer motor. 6. Disconnect the windshield washer hose from the washer motor. 7. Disconnect the ...

Drive Belt [Skyactiv G 2.0]
Purpose, Function The drive belt transmits rotation force of the crankshaft pulley to the pulley for the auxiliary parts. Construction The drive belt is installed to the front of the engine. A V-ribbed belt has been adopted for the drive belt. The wat ...