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Inspection When Engine Oil Level Warning Light Is On

  1. CHECK DTC  .

    Read the DTC using the Subaru Select Monitor.

    NOTE: For detailed operation procedures of Subaru Select Monitor 4, refer to "Application help".

    Is DTC detected?

    Yes: 

    1. Repair the corresponding system.
    2. Go to  2.

    No:  Go to  2.

  2. CHECK ENGINE OIL LEVEL  .

    Check the engine oil level.

    Is engine oil level normal?

    Yes:  Go to  3.

    No: 

    1. Adjust the engine oil level to a proper amount.
    2. Go to  3.
  3. CHECK ENGINE OIL LEVEL WARNING LIGHT  .
    1. Start the engine and warm up completely.
    2. Turn to IG OFF, and wait for one minute or more.
    3. Turn to IG ON.
    4. Check if engine oil level warning light goes off.

    Does the engine oil level warning light go off?

    Yes:  System is normal.

    Restore the vehicle to its original state.

    No:  Go to  4.

  4. CHECK OIL LEVEL SWITCH  .
    1. Turn the ignition to OFF.
    2. Disconnect the ground cable from battery.
    3. Disconnect the oil level switch connector.
    4. Check continuity between the oil level switch terminal and chassis ground.

    Is there continuity?

    Yes:  Go to  5.

    No:  Replace the oil level switch.

    Restore the vehicle to its original state.

  5. CHECK CONTINUITY OF ENGINE WIRING HARNESS  .
    1. Disconnect the engine wiring harness and the bulkhead harness.
    2. Check continuity between the connector on the engine wiring harness oil pressure switch side and the connector on the engine wiring harness bulkhead side.

    Is there continuity?

    Yes:  Go to  6.

    No: 

    1. Repair the engine wiring harness.
    2. Restore the vehicle to its original state.
  6. CHECK CONTINUITY OF BULKHEAD HARNESS  .
    1. Disconnect the ECM connector.
    2. Check continuity between the bulkhead harness connector on the engine wiring harness side and the bulkhead harness connector on the ECM side.

    Is there continuity?

    Yes:  Go to  7.

    No: 

    1. Repair the bulkhead harness.
    2. Restore the vehicle to its original state.
  7. CHECK COMBINATION METER  .
    1. Restore the vehicle to its original state.
    2. Perform the self-diagnosis display mode of combination meter.

    Is combination meter OK?

    Yes: 

    1. Check for poor contact due to the wear of connector pin etc., and if no fault is found, replace the ECM.
    2. Restore the vehicle to its original state.

    No: 

    1. Replace the combination meter.
    2. Restore the vehicle to its original state.
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