P0520

P0520 EOP SENSOR

DTC Logic


DTC DETECTION LOGIC







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. PERFORM DTC CONFIRMATION PROCEDURE

1.Turn ignition switch ON and wait at least 5 seconds.
2.Check 1st trip DTC.
Is 1st trip DTC detected?
YES- Proceed to .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK ENGINE OIL

1.Turn ignition switch OFF.
2.Check engine oil level and pressure. Testing and Inspection.
Is inspection result normal?
YES- GO TO 2.
NO- Repair or replace error-detected parts.

2. CHECK EOP SENSOR POWER SUPPLY-I

1.Disconnect EOP sensor connector.
2.Turn ignition switch ON.
3.Check the voltage between EOP sensor harness connector terminals.





Inspection result normal?
YES- GO TO 7.
NO- GO TO 3.

3. CHECK EOP SENSOR POWER SUPPLY-II

Check the voltage between EOP sensor harness connector and the ground.





Is inspection result normal?
YES- GO TO 5.
NO- GO TO 4.

4. CHECK SENSOR POWER SUPPLY CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect ECM harness connector.
3.Check harness connector for short to power and short to ground, between the following terminals.





Is inspection result normal?
YES- Perform the trouble diagnosis for power supply circuit.
NO- Repair or replace error-detected parts.

5. CHECK EOP SENSOR GROUND CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect ECM harness connector.
3.Check the continuity between EOP sensor harness connector and ECM harness connector.





4.Also check harness for short to power.
Is inspection result normal?
YES- GO TO 6.
NO- Repair or replace error-detected parts.

6. CHECK ECM GROUND CIRCUIT

Check the continuity between ECM harness connector and ground.





Is inspection result normal?
YES- Check intermittent incident. Intermittent Incident.
NO- Repair or replace error-detected parts.

7. CHECK EOP SENSOR SIGNAL CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect ECM harness connector.
3.Check the continuity between EOP sensor harness connector and ECM harness connector.





4.Also check harness for short to ground and to power.
Is inspection result normal?
YES- GO TO 8.
NO- Repair or replace error-detected parts.

8. CHECK EOP SENSOR

.
Is inspection result normal?
YES- Check intermittent incident. Intermittent Incident.
NO- Repair or replace error-detected parts.


Component Inspection


1. CHECK EOP SENSOR

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





Is the inspection result normal?
YES- INSPECTION END.
NO- Replace EOP sensor. Exploded View.