OIL CONTROL VALVE (OCV) INSPECTION [SKYACTIV-G 2.0]
2016 – MX-5 – Engine
OIL CONTROL VALVE (OCV) INSPECTION [SKYACTIV-G 2.0]
Coil Resistance Inspection
1. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)
2. Disconnect the OCV connector.
3. Measure the resistance between terminals A and B using an ohmmeter.
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OCV coil resistance
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6.9—7.5 ohms [20°C {68°F}]
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If not as specified, replace the OCV. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)
4. Install in the reverse order of removal.
Spool Valve Operation Inspection
1. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)
2. Remove the OCV. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)
3. Verify that the spool valve in the OCV is in the maximum valve timing advance position as indicated in the figure.
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If not as specified, replace the OCV. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)
4. Verify that the battery is fully charged. (See BATTERY INSPECTION.)
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If not as specified, recharge the battery. (See BATTERY RECHARGING.)
NOTE:
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When applying battery positive voltage between the OCV terminals, the connection can be either of the following:
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Positive battery cable to terminal A, negative battery cable to terminal B
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Positive battery cable to terminal B, negative battery cable to terminal A
5. Apply battery positive voltage between the OCV 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. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)
6. Stop applying battery positive voltage and verify that the spool valve returns to the maximum valve timing advance position.
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If not as specified, replace the OCV. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)
7. Install the OCV. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)