Engine Oil Control Valve: Testing and 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. Service and Repair

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. Service and Repair

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. Service and Repair

8. Connect the negative battery cable.