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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, refer to "Help" of application.

    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. Refer to LUBRICATION (H4DO (EXCEPT FOR HEV))>ENGINE OIL>INSPECTION .

    Is engine oil level normal?

    Yes:  Except for hybrid model Go to  3.

    Hybrid model Go to  4.

    No: 

    1. Adjust the engine oil level to a proper amount.
    2. Except for hybrid model Go to  3.

    Hybrid engine model Go to  4.

  3. CHECK ENGINE OIL LEVEL WARNING LIGHT (EXCEPT FOR HYBRID MODEL)  .
    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 remains off.

    Does the engine oil level warning light remain off?

    Yes:  System is normal.

    Restore the vehicle to its original state.

    No:  Go to  5.

  4. CHECK ENGINE OIL LEVEL WARNING LIGHT (HYBRID MODEL)  .
    1. Install the delivery mode fuse.
    2. Turn to IG ON (engine OFF), and wait for one minute or more.
    3. Check if engine oil level warning light remains off.

    Does the engine oil level warning light remain off?

    Yes:  System is normal.

    Restore the vehicle to its original state.

    No:  Go to  5.

  5. CHECK OIL LEVEL SWITCH  .
    1. Turn the ignition to OFF.
    2. Disconnect the ground terminal from battery. Refer to REPAIR CONTENTS>REPAIR CONTENTS>NOTE>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  6.

    No:  Replace the oil level switch. Refer to LUBRICATION (H4DO (EXCEPT FOR HEV))>OIL LEVEL SWITCH>REMOVAL .

    Restore the vehicle to its original state.

  6. CHECK CONTINUITY OF ENGINE WIRING HARNESS  .
    1. Disconnect the ECM connector.
    2. Check continuity between the connector on the engine wiring harness oil level switch side and the connector on the engine wiring harness ECM side.

    Is there continuity?

    Yes:  Go to  7.

    No: 

    1. Repair the engine wiring 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. Refer to INSTRUMENTATION/DRIVER INFO>COMBINATION METER SYSTEM>OPERATION>SELF-DIAGNOSIS DISPLAY MODE .

    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. Refer to INSTRUMENTATION/DRIVER INFO>COMBINATION METER>REMOVAL .
    2. Restore the vehicle to its original state.
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