Oil Control Valve (OCV) Inspection

OIL CONTROL VALVE (OCV) INSPECTION [MZR 2.5]

Coil Resistance Inspection

1. Remove the battery cover. Removal and Replacement

2. Disconnect the negative battery cable.

3. Remove the plug hole plate. Service and Repair

4. Disconnect the OCV connector.

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






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

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

6. Install in the reverse order of removal.

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 exceeds the specification, replace the OCV. Oil Control Valve (OCV) Removal/Installation

3. Verify that the battery is fully charged. Procedures

- If is less than the specification, recharge the battery. Procedures

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 exceeds the specification, replace the OCV. Oil Control Valve (OCV) Removal/Installation

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





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

- If exceeds the specification, replace the OCV. Oil Control Valve (OCV) Removal/Installation

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