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Coil Resistance Inspection

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

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• If not as specified, replace the OCV for hydraulic variable valve timing system.

Spool Valve Operation Inspection

1.Verify that the spool valve in the OCV for hydraulic variable valve timing system is in the maximum valve timing advance position as indicated in the figure.

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• If not as specified, replace the OCV for hydraulic variable valve timing system.

Note

• When applying battery positive voltage between the OCV for hydraulic variable valve timing system 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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2.Apply battery positive voltage between the OCV for hydraulic variable valve timing system terminals and verify that the spool valve operates and moves to the maximum valve timing retard position.

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• If not as specified, replace the OCV for hydraulic variable valve timing system.

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

• If not as specified, replace the OCV for hydraulic variable valve timing system.