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Home >> Mazda >> 2012 >> 2 L4-1.5L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Variable Valve Timing Actuator >> Testing and Inspection >> Oil Control Valve (OCV) Inspection
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Oil Control Valve (OCV) Inspection





OIL CONTROL VALVE (OCV) INSPECTION [MZR 1.5]

Coil Resistance Inspection

1. Disconnect the negative battery cable.

2. Disconnect the OCV connector.

3. Measure the coil resistance between terminals A and B using a tester.






- If not within the specification, replace the OCV. Oil Control Valve (OCV) Removal/Installation

Oil control valve (OCV) coil resistance
- 6.9-7.9 ohms [20°C {68°F}]

4. Connect the OCV connector.

5. Connect the negative battery cable.

Spool Valve Operation Inspection

1. Disconnect the negative battery cable.

2. Remove the OCV. Oil Control Valve (OCV) Removal/Installation

3. Verify that the spool valve inside the OCV is at the maximum valve timing retard position as shown in the figure.

- If it cannot be verified, replace the OCV.





4. Verify that the battery is fully charged. Testing and Inspection

NOTE:
- When applying battery positive voltage between the oil control valve terminals, the connection of the negative and positive cable can be either the A or B terminal.

5. Apply battery positive voltage between oil control valve terminals A and B, and verify that the spool valve operates and moves to the maximum valve timing advance position.

- If there is any malfunction, replace the OCV.





6. Stop applying battery positive voltage and verify that the spool valve returns to the maximum valve timing retard position.

- If it cannot be verified, replace the OCV.





7. Install the OCV. Oil Control Valve (OCV) Removal/Installation

8. Connect the negative battery cable.

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