OIL CONTROL VALVE (OCV) INSPECTION [ZJ, Z6]

Coil resistance inspection

1. Remove the battery cover.

2. Disconnect the negative battery cable.

3. Disconnect the OCV connector.

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

• If not within the specification, replace the OCV.

6.9-7.9 ohms [20°C {68°F}]

5. Connect the OCV connector.

Spool Valve Operation Inspection

1. Remove the battery cover.

2. Disconnect the negative battery cable.

3. Remove the OCV. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [ZJ, Z6].)

4. 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.

5. Verify that the battery is fully charged.

6. 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.

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.

7. 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.

8. Install the OCV. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [ZJ, Z6].)