Oil Control Valve (OCV) Inspection

OIL CONTROL VALVE (OCV) INSPECTION [MZR 2.5]

Coil Resistance Inspection

1. Disconnect the negative battery cable.

2. Remove the plug hole plate. Service and Repair

3. Disconnect the OCV connector.

4. Measure the resistance between terminals A and B using an ohmmeter.

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





Coil resistance
- 6.9-7.9 ohms [20°C {68°F}]

5. Connect the OCV connector.

6. Install the plug hole plate. Service and Repair

7. Connect the negative battery cable.

Spool Valve Operation Inspection

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

2. Verify that the spool valve in the OCV is in the maximum valve timing retard position as indicated in the figure.

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





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

- If not as specified, recharge the battery. Procedures

NOTE:
- When applying battery positive voltage between the OCV terminals, the connection can be either of the following:

- Positive battery cable to terminal A, negative battery cable to terminal B
- Positive battery cable to terminal B, negative battery cable to terminal A





4. Apply battery positive voltage between the OCV terminals and verify that the spool valve operates and moves to the maximum valve timing advance position.

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





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

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

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