OIL CONTROL VALVE (OCV) INSPECTION [L8, LF]

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Coil Resistance Inspection

1. Remove the battery cover. (See BATTERY REMOVAL/INSTALLATION [L8, LF].)

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

3. Disconnect the OCV connector.

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

  • If not as specified, replace the OCV. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [L8, LF].)

  Oil control valve resistance

  6.9—7.9 ohms [20°C {68°F}]

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5. Connect the OCV connector.

Spool Valve Operation Inspection

1. Remove the battery cover. (SeeBATTERY REMOVAL/INSTALLATION [L8, LF].)

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

3. Remove the OCV. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [L8, LF].)

4. 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. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [L8, LF].)

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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 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. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [L8, LF].)

  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

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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 OCV. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [L8, LF].)