Nissan Frontier. Instruction - part 553

 

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Nissan Frontier. Instruction - part 553

 

 

P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-783

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR USA AND CANADA]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

OK

>> GO TO 2.

NG

>> Repair or replace ground connections.

2.

CHECK EVPA CONTROL SYSTEM PRESSURE SENSOR CONNECTOR FOR WATER

1. Disconnect EVAP control system pressure sensor (2) harness

connector.

-

EVAP canister vent control valve (1)

-

Drain filter (3)

-

EVAP canister (4)

-

: Vehicle front

2. Check sensor harness connector for water.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness connector.

3.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to 

EC-783, "Component Inspection"

.

OK or NG

OK

>> GO TO 4.

NG

>> Replace EVAP control system pressure sensor. Refer to 

FL-14, "Removal and Installation"

.

4.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000009481442

EVAP CONTROL SYSTEM PRESSURE SENSOR

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

Do not reuse the O-ring, replace it with a new one.

2. Install a vacuum pump to EVAP control system pressure sensor.
3. Turn ignition switch ON and check output voltage between ECM terminal 102 and ground under the fol-

lowing conditions.

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).

4. If NG, replace EVAP control system pressure sensor.

Water should not exist.

ALBIA0514ZZ

Applied vacuum kPa

(kg/cm

2

, psi)

Voltage V

Not applied

1.8 - 4.8

-26.7 (-0.272, -3.87)

2.1 to 2.5V lower than above value

EC-784

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR USA AND CANADA]

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

Component Description

INFOID:0000000009481443

The EVAP control system pressure sensor (2) detects pressure in

the purge line. The sensor output voltage to the ECM increases as

pressure increases.

• EVAP canister vent control valve (1)

• Drain filter (3)

• EVAP canister (4)
•

: Vehicle front

On Board Diagnosis Logic

INFOID:0000000009481444

If DTC P0452 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to

EC-830

.

DTC Confirmation Procedure

INFOID:0000000009481445

NOTE:

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next step.

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.

 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. Turn ignition switch OFF and wait at least 10 seconds and then turn ON.
5. Select “DATA MONITOR” mode with CONSULT.
6. Check that “FUEL T/TMP SE” is more than 0

°C (32°F).

7. Start engine and wait at least 20 seconds.
8. Check 1st trip DTC.

ALBIA0514ZZ

PBIB3370E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0452
0452

EVAP control system 
pressure sensor low in-
put

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

• Harness or connectors

(The sensor circuit is open or shorted.)

• EVAP control system pressure sensor

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-785

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR USA AND CANADA]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

9. If 1st trip DTC is detected, go to 

EC-785, "Diagnosis Procedure"

.

 WITH GST

1. Start engine and warm it up to normal operating temperature.
2. Check that voltage between ECM terminal 111 (Fuel tank temperature sensor signal) and ground is less

than 4.2V.

3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
5. Turn ignition switch OFF and wait at least 10 seconds.
6. Start engine and wait at least 20 seconds.
7. Select Service $07 with GST.

If 1st trip DTC is detected, go to 

EC-785, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009481446

1.

CHECK GROUND CONNECTIONS

1. Turn ignition switch OFF.

2. Loosen and retighten three ground screws on the body. Refer to 

EC-617, "Ground Inspection"

.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace ground connections.

2.

CHECK CONNECTOR

1. Disconnect EVAP control system pressure sensor (2) harness

connector.

-

EVAP canister vent control valve (1)

-

Drain filter (3)

-

EVAP canister (4)

-

: Vehicle front

2. Check sensor harness connector for water.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness connector.

3.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT

1. Turn ignition switch ON.

2. Check voltage between EVAP control system pressure sensor terminal 3 and ground with CONSULT or

tester.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors C1, E41

• Harness for open or short between EVAP control system pressure sensor and ECM

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

5.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

Water should not exist.

ALBIA0514ZZ

Voltage: Approximately 5V

EC-786

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR USA AND CANADA]

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

3. Check harness continuity between EVAP control system pressure sensor terminal 1 and ECM terminal

112.

Refer to Wiring Diagram.

4. Also check harness for short to ground and short to power.
OK or NG

OK

>> GO TO 7.

NG

>> GO TO 6.

6.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors C1, E41

• Harness for open or short between EVAP control system pressure sensor and ECM

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

7.

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

SHORT
1. Check harness continuity between ECM terminal 102 and EVAP control system pressure sensor terminal

2.

Refer to Wiring Diagram.

2. Also check harness for short to ground and short to power.
OK or NG

OK

>> GO TO 9.

NG

>> GO TO 8.

8.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors C1, E41

• Harness for open or short between EVAP control system pressure sensor and ECM

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

9.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to 

EC-786, "Component Inspection"

.

OK or NG

OK

>> GO TO 10.

NG

>> Replace EVAP control system pressure sensor. Refer to 

FL-14, "Removal and Installation"

.

10.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000009481447

EVAP CONTROL SYSTEM PRESSURE SENSOR

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

Do not reuse the O-ring, replace it with a new one.

2. Install a vacuum pump to EVAP control system pressure sensor.
3. Turn ignition switch ON and check output voltage between ECM terminal 102 and ground under the fol-

lowing conditions.

Continuity should exist.

Continuity should exist.

 

 

 

 

 

 

 

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