Nissan Murano: Dtc/circuit Diagnosis / P0520 Eop Sensor

Nissan Murano (Z52) 2015-2024 Service Manual / Engine / Engine Control System :: Vq35de / Dtc/circuit Diagnosis / P0520 Eop Sensor

DTC Description

DTC DETECTION LOGIC

  1. A voltage signal transmitted from the engine oil pressure sensor is lower than 0.26 V.

  2. A voltage signal transmitted from the engine oil pressure sensor is higher than 4.9 V.

DTC

CONSULT screen terms

(Trouble diagnosis content)
DTC detection condition
P0520

EOP SENSOR/SWITCH

(Engine oil pressure sensor/switch circuit)
1 Diagnosis condition Start engine and let it idle
Signal (terminal) Voltage signal transmitted from engine oil pressure sensor to ECM
Threshold A voltage signal transmitted from the engine oil pressure sensor is lower than 0.26 V
Diagnosis delay time 5 seconds or more
2 Diagnosis condition Start engine and let it idle
Signal (terminal) Voltage signal transmitted from engine oil pressure sensor to ECM
Threshold A voltage signal transmitted from the engine oil pressure sensor is higher than 4.9 V
Diagnosis delay time 5 seconds or more

POSSIBLE CAUSE

  • Harness or connectors

    (EOP sensor circuit is open or shorted)

    (APP sensor 2 circuit is shorted.)

    [CMP sensor (PAHSE) circuit is open or shorted.]

    (Refrigerant pressure sensor is shorted.)

  • Engine oil temperature (EOP) sensor

  • Accelerator pedal position sensor

    (APP sensor 2)

  • Camshaft position (CMP) sensor (PHESE)

  • Refrigerant pressure sensor

FAIL-SAFE

Not applicable

DTC Confirmation Procedure

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.

CHECK ENGINE OIL LEVEL

  1. Turn ignition switch OFF.

  2. Check engine oil level. Refer to Inspection.

Is inspection result normal?

YES>>

GO TO 3.

NO>>

Check engine oil leak. Refer to Inspection.

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>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

CHECK EOP SENSOR POWER SUPPLY-I

  1. Turn ignition switch OFF.

  2. Disconnect EOP sensor harness connector.

  3. Turn ignition switch ON.

  4. Check the voltage between EOP sensor harness connector terminals.

    EOP sensor

    Voltage

    (Approx.)
    Connector +
    terminal
    F87 3 1 5 V

Is the inspection result normal?

YES>>

GO TO 2.

NO>>

GO TO 4.

CHECK EOP SENSOR SIGNAL CIRCUIT

  1. Turn ignition switch OFF.

  2. Disconnect ECM harness connectors.

  3. Check the continuity between EOP sensor harness connector and ECM harness connector.

    EOP sensor ECM Continuity
    Connector Terminal Connector Terminal
    F87 2 F78 14 Existed
  4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES>>

GO TO 3.

NO>>

Repair or replace error-detected parts.

CHECK EOP SENSOR

Check EOP sensor. Refer to Component Inspection.

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Repair or replace error-detected parts.

CHECK EOP SENSOR POWER SUPPLY-II

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

+

Voltage

(Approx.)
EOP sensor
Connector Terminal
F87 3 Ground 5 V

Is the inspection result normal?

YES>>

GO TO 6.

NO>>

GO TO 5.

CHECK EOP SENSOR POWER SUPPLY CIRCUIT

  1. Turn ignition switch OFF.

  2. Disconnect ECM harness connectors.

  3. Check the continuity between EOP sensor harness connector and ECM harness connector.

    EOP sensor ECM Continuity
    Connector Terminal Connector Terminal
    F87 3 F78 18 Existed
  4. Also check harness for short to ground and short to power.

Is the inspection result normal?

YES>>

Check sensor power supply 2 circuit. Refer to Diagnosis Procedure.

NO>>

Repair or replace error-detected parts.

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.

    EOP sensor ECM Continuity
    Connector Terminal Connector Terminal
    F87 1 F78 15 Existed

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

Repair or replace error-detected parts.

CHECK ECM GROUND CIRCUIT

Check the continuity between ECM harness connector and ground.

ECM Continuity
Connector Terminal
E32 147 Ground Existed
149
152
F78 10
55
F79 105
110

Is the inspection result normal?

YES>>

INSPECTION END

NO>>

Repair or replace error-detected parts.

Component Inspection

CHECK EOP SENSOR

  1. Turn ignition switch OFF.

  2. Disconnect EOP sensor harness connector.

  3. Check resistance between EOP sensor connector terminals.

    EOP sensor Condition

    Resistance

    (kΩ)
    +
    Terminal
    1 2 None 4 – 10
    3 2 – 8
    2 1 4 – 10
    3 1 – 3
    3 1 2 – 8
    2 1 – 3

Is the inspection result normal?

YES>>

INSPECTION END.

NO>>

Replace EOP sensor. Refer to Component Parts Location.

    P050a Cold Start Control

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    P0524 Engine Oil Pressure

    DTC Description DTC DETECTION LOGICAn EOP sensor signal voltage applied to ECM remains lower than the specified value continuously for 10 seconds or more when the engine speed is 1,000 rpm or more...

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