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Coil Resistance Inspection

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

• If it is not within the specification, replace the OCV.

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Spool Valve Operation Inspection

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

• If there is any malfunction, replace the OCV.

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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

2.Apply battery positive voltage between the OCV terminals and verify that the spool valve operates and moves to the maximum valve timing retard position.

• If there is any malfunction, replace the OCV.

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

• If there is any malfunction, replace the OCV.