P0520

P0520 EOP SENSOR

DTC Logic


DTC DETECTION LOGIC

NOTE:
If DTC P0520 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to
"DTC Logic" P0643.






DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
1.Turn ignition switch OFF and wait at least 10 seconds.
2.Turn ignition switch ON.
3.Turn ignition switch OFF and wait at least 10 seconds.
- GO TO 2.

2. CHECK ENGINE OIL LEVEL

Check engine oil level. Refer to "Inspection" Inspection.
Is inspection result normal?
YES- GO TO 3.
NO- Check engine oil leak. Refer to "Inspection" Inspection.

3. PERFORM DTC CONFIRMATION PROCEDURE

1.Start engine and let it idle for at least 5 seconds.
2.Check 1st trip DTC.
Is 1st trip DTC detected?
YES- Proceed to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK ENGINE OIL PRESSURE SENSOR POWER SUPPLY CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect engine oil pressure sensor harness connector.
3.Turn ignition switch ON.
4.Check the voltage between engine oil pressure sensor harness connector terminals.





Is inspection result normal?
YES- GO TO 2
NO- Repair or replace error-detected parts.

2. CHECK ENGINE OIL PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.Check the continuity between engine oil pressure sensor harness connector and ECM harness connector.





2.Also check harness for short to ground and short to power.
Is inspection result normal?
YES- GO TO 3.
NO- Repair or replace error-detected parts.

3. CHECK ENGINE OIL PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.Check the continuity between engine oil pressure sensor harness connector and ECM harness connector.





2.Also check harness for short to ground and short to power.
Is inspection result normal?
YES- GO TO 4.
NO- Repair or replace error-detected parts.

4. CHECK ENGINE OIL PRESSURE SENSOR

Refer to "Component Inspection" .
Is inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Replace engine oil pressure sensor. Refer to "Exploded View" Exploded View.


Component Inspection


1. CHECK ENGINE OIL PRESSURE SENSOR

1.Turn ignition switch OFF.
2.Disconnect engine oil pressure sensor harness connector.
3.Check resistance between engine oil pressure sensor connector terminals.





Is the inspection result normal?
YES- INSPECTION END.
NO- Replace engine oil pressure sensor. Refer to "Exploded View" Exploded View.