OIL CONTROL VALVE (OCV) INSPECTION [LF]

Coil Resistance Inspection

1. Remove the battery cover.

2. Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [L8, LF].)

3. Disconnect the oil control valve connector.

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

• If not as specified, replace the oil control valve. (SeeOIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [LF].)

Oil control valve resistance

6.9-7.9 ohms [20°C {68°F}]

5. Connect the oil control valve connector.

Spool Valve Operation Inspection

1. Remove the battery cover.

2. Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [L8, LF].)

3. Remove the oil control valve.

4. Verify that the spool valve in the oil control valve is in the maximum valve timing retard position as indicated in the figure.

• If not as specified, replace the oil control valve. (SeeOIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [LF].)

5. Verify that the battery is fully charged.

• If not as specified, recharge the battery. (See BATTERY INSPECTION [L8, LF].)

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

• If not as specified, replace the oil control valve.

Note

• When applying battery positive voltage between the oil control valve 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

7. 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 oil control valve.