Toyota
Nissan Versa
 Sedan Service Manual
Engine » Engine control system (EC) » P0520 EOP sensor
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 EC, "Component Inspection".

Is inspection result normal?

YES >> Check intermittent incident. Refer to GI, "Intermittent Incident".

NO >> Replace engine oil pressure sensor. Refer to EM, "Exploded View".

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