Nissan Murano. Manual - part 551

EC-314

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

3.

Check that the voltage is less than 4.2 V.

4.

Turn ignition switch OFF and wait at least 10 seconds.

5.

Turn ignition switch ON.

6.

Turn ignition switch OFF and wait at least 10 seconds.

7.

Start engine and wait at least 20 seconds.

8.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Go to 

EC-314, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009720042

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection E38. Refer to Ground Inspection in 

GI-47, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK CONNECTOR

1.

Disconnect EVAP control system pressure sensor harness connector.

2.

Check that water is not inside connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness connector.

3.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-I

1.

Turn ignition switch ON.

2.

Check the voltage between EVAP control system pressure sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> GO TO 4.

4.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-II

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between EVAP control system pressure sensor harness connector and ECM har-
ness connector.

Is the inspection result normal?

YES

>> GO TO 6.

ECM

Connector

+

–

Terminal

Terminal

E16

95

(Fuel tank temperature sensor signal)

104

(Sensor ground)

EVAP control system pressure sensor

Ground

Voltage (V)

Connector

Terminal

B17

3

Ground

Approx. 5

EVAP control system pressure sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

B17

3

E16

91

Existed

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-315

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NO

>> GO TO 5.

5.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors B4, E104
• Harness for open or short between EVAP control system pressure sensor and ECM

>> Repair open circuit.

6.

CHECK SENSOR POWER SUPPLY CIRCUIT

Check harness for short to power and short to ground, between the following terminals.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair short to ground or short to power in harness or connectors.

7.

CHECK COMPONENTS

Check the following.
• Crankshaft position sensor (POS) (Refer to 

EC-278, "Component Inspection"

.)

• Refrigerant pressure sensor (Refer to 

EC-465, "Diagnosis Procedure"

.)

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Replace malfunctioning components.

8.

CHECK APP SENSOR

Refer to 

EC-421, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 15.

NO

>> GO TO 9.

9.

REPLACE ACCELERATOR PEDAL ASSEMBLY

1.

Replace accelerator pedal assembly. Refer to 

ACC-4, "Exploded View"

.

2.

Refer to 

EC-421, "Special Repair Requirement"

.

>> INSPECTION END

10.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND

SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between EVAP control system pressure sensor harness connector and ECM har-
ness connector.

4.

Also check harness for short to ground and short to power.

Is the inspection result normal?

ECM

Sensor

Connector

Terminal

Name

Connector

Terminal

F8

72

Refrigerant pressure sensor

E300

1

76

CKP sensor (POS)

F20

1

E16

87

APP sensor

E110

5

91

EVAP control system pressure sensor

B17

3

EVAP control system pressure sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

B17

1

E16

96

Existed

EC-316

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

YES

>> GO TO 12.

NO

>> GO TO 11.

11.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors B4, E104
• Harness for open or short between EVAP control system pressure sensor and ECM

>> Repair open circuit, short to ground or short to power in harness or connectors.

12.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND

SHORT

1.

Check the continuity between EVAP control system pressure sensor harness connector and ECM har-
ness connector.

2.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 14.

NO

>> GO TO 13.

13.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors B4, E104
• Harness for open or short between EVAP control system pressure sensor and ECM

>> Repair open circuit, short to ground or short to power in harness or connectors.

14.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to 

EC-312, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 15.

NO

>> Replace EVAP control system pressure sensor. Refer to 

FL-16, "Exploded View"

.

15.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-44, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000009720043

1.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

1.

Turn ignition switch OFF.

2.

Remove EVAP control system pressure sensor with its harness connector. Refer to 

FL-16, "Exploded

View"

.

Always replace O-ring with a new one.

3.

Install a vacuum pump to EVAP control system pressure sensor.

4.

Turn ignition switch ON and check output voltage between ECM terminals under the following conditions.

EVAP control system pressure sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

B17

2

E16

86

Existed

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-317

< DTC/CIRCUIT DIAGNOSIS >

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CAUTION:

• Always calibrate the vacuum pump gauge when using it.
• Never apply below -93.3 kPa (-0.952 kg/cm

2

, -13.53 psi) or pressure over 101.3 kPa (1.033 kg/cm

2

,

14.69 psi).

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace EVAP control system pressure sensor. Refer to 

FL-16, "Exploded View"

.

ECM

Applied vacuum kPa

(kg/cm

2

, psi)

Voltage

Connector

+

–

Terminal

Terminal

E16

86

(EVAP control system 

pressure sensor signal)

96

(Sensor ground)

Not applied

1.8 - 4.8 V

-26.7 (-0.272, -3.87)

2.1 to 2.5 V lower than 

above value