Nissan Versa Sedan. Manual - part 327

 

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Nissan Versa Sedan. Manual - part 327

 

 

P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-307

< DTC/CIRCUIT DIAGNOSIS >

[HR16DE]

C

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F

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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 power.
Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace error-detected parts.

7.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR SIGNAL CIRCUIT

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 to power.
Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace error-detected parts.

8.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Check the EVAP control system pressure sensor. Refer to 

EC-307, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-45, "Intermittent Incident"

.

NO

>> Replace EVAP control system pressure sensor. Refer to 

FL-16, "Removal and Installation"

.

Component Inspection

INFOID:0000000009267186

1.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

1. Turn ignition switch OFF.

2. Remove EVAP control system pressure sensor with its harness connector connected from EVAP canister.

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 harness connector and ground under the

following conditions.

CAUTION:

• Always calibrate the vacuum pump gauge when using it.
• Do not 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, "Removal and Installation"

.

EVAP control system pressure sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

B3

1

F11

68

Existed

EVAP control system pressure sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

B3

2

F11

43

Existed

ECM

Condition

[Applied vacuum kPa (kg/cm

2

, psi)]

Voltage

Connector

+

−

Terminal

F11

43

68

Not applied

0.5 - 4.6 V

-26.7 (-0.272, -3.87)

2.1 to 2.5 V lower than above value

EC-308

< DTC/CIRCUIT DIAGNOSIS >

[HR16DE]

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

DTC Logic

INFOID:0000000009267187

DTC DETECTION LOGIC

NOTE:

If DTC P0451 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to

EC-344, "DTC 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.

TESTING CONDITION:

Always perform test at a temperature of 5

°C (41°F) or more.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Start engine and warm it up to normal operating temperature.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON.

4. Select “DATA MONITOR” mode of “ENGINE” using CONSULT.

5. Make sure that “FUEL T/TMP SE” indication is more than 0

°C (32°F).

6. Start engine and wait at least 20 seconds.

7. Check 1st trip DTC.

With GST

1. Start engine and warm it up to normal operating temperature.

2. Set voltmeter probes to ECM harness connector terminals as per the following.

3. Make sure that the voltage is less than 4.2 V.

4. Turn ignition switch OFF and wait at least 10 seconds.

DTC No.

Trouble diagnosis name

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0452

EVAP SYS PRES SEN
(EVAP control system pressure 
sensor low input)

An excessively low voltage from the sensor 
is sent to ECM.

• Harness or connectors

(EVAP control system pressure sensor 
circuit is shorted.)
[Crankshaft position sensor (POS) circuit 
is shorted.]
(Battery current sensor circuit is shorted.)
(Refrigerant pressure sensor circuit is 
shorted.)
(Accelerator pedal position sensor 2 cir-
cuit is shorted.)

• EVAP control system pressure sensor
• Crankshaft position sensor (POS)
• Battery current sensor
• Refrigerant pressure sensor
• Accelerator pedal position sensor

ECM

Voltage

Connector

+

−

Terminal

F11

43

68

Less than 4.2 V

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-309

< DTC/CIRCUIT DIAGNOSIS >

[HR16DE]

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5. Start engine and wait at least 20 seconds.

6. Check 1st trip DTC.
Is 1st trip DTC detected?

YES

>> Proceed to 

EC-309, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009267188

1.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR FOR WATER

1. Turn ignition switch OFF.

2. Disconnect EVAP control system pressure sensor harness connector.

3. Check sensor harness connector for water.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness connector.

2.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY

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 6.

NO

>> GO TO 3.

3.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT

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 to power.
Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts

4.

CHECK SENSOR POWER SUPPLY CIRCUIT

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

Water should not exist.

EVAP control system pressure sensor

Ground

Voltage

(Approx.)

Connector

Terminal

B3

3

Ground

5 V

EVAP control system pressure sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

B3

3

F11

71

Existed

ECM

Sensor

Connector

Terminal

Name

Connector

Terminal

F11

71

EVAP control system pressure sen-
sor

B3

3

Battery current sensor

F9

1

75

CKP sensor (POS)

F15

1

EC-310

< DTC/CIRCUIT DIAGNOSIS >

[HR16DE]

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

*: With A/C models
Is the inspection result normal?

YES

>> GO TO 5.

NO

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

5.

CHECK COMPONENTS

Check the following.

• Battery current sensor (Refer to 

EC-368, "Component Inspection"

).

• CKP sensor (POS) (Refer to 

EC-274, "Component Inspection"

).

• Refrigerant pressure sensor (Refer to 

EC-448, "Component Function Check"

).

• Accelerator pedal position sensor (Refer to 

EC-410, "Component Inspection"

).

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-45, "Intermittent Incident"

.

NO

>> Replace malfunctioning component.

6.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR GROUND CIRCUIT

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 power.
Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace error-detected parts.

7.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR SIGNAL CIRCUIT

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 to power.
Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace error-detected parts.

8.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Check the EVAP control system pressure sensor. Refer to 

EC-307, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-45, "Intermittent Incident"

.

NO

>> Replace EVAP control system pressure sensor. Refer to 

FL-16, "Removal and Installation"

.

E16

101

Refrigerant pressure sensor

*

E17

3

102

Accelerator pedal position sensor 2

E12

5

ECM

Sensor

Connector

Terminal

Name

Connector

Terminal

EVAP control system pressure sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

B3

1

F11

68

Existed

EVAP control system pressure sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

B3

2

F11

43

Existed

 

 

 

 

 

 

 

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