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Nissan Frontier. Manual - part 554

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-787

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR USA AND CANADA]

CAUTION:

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

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

14.59 psi).

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

Applied vacuum kPa

(kg/cm

, 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-788

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR USA AND CANADA]

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

Component Description

INFOID:0000000009481448

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:0000000009481449

If DTC P0453 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to

EC-830

DTC Confirmation Procedure

INFOID:0000000009481450

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.

ALBIA0514ZZ

PBIB3370E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0453
0453

EVAP control system
pressure sensor high in-
put

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

• Harness or connectors

(The sensor circuit is open or shorted.)

• EVAP control system pressure sensor
• EVAP canister vent control valve
• EVAP canister
• drain filter
• Rubber hose from EVAP canister vent

control valve to vehicle frame

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-789

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR USA AND CANADA]

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

EC-789, "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-789, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000009481451

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

>> GO TO 2.

>> Repair or replace ground connections.

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

>> GO TO 3.

>> Repair or replace harness connector.

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

>> GO TO 5.

>> GO TO 4.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors C1, E41

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

Water should not exist.

ALBIA0514ZZ

Voltage: Approximately 5V

EC-790

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR USA AND CANADA]

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

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

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

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

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

>> GO TO 7.

>> GO TO 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.

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

Refer to Wiring Diagram.

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

>> GO TO 9.

>> GO TO 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.

CHECK RUBBER TUBE

1. Disconnect rubber tube connected to EVAP canister vent control valve.

2. Check the rubber tube for clogging, vent and kinked.
OK or NG

>> GO TO 10.

>> Clean the rubber tube using an air blower, repair or replace rubber tube.

10.

CHECK EVAP CANISTER VENT CONTROL VALVE

Refer to

EC-774, "Component Inspection"

OK or NG

>> GO TO 11.

>> Replace EVAP canister vent control valve. Refer to

FL-14, "Removal and Installation"

11.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to

EC-791, "Component Inspection"

OK or NG

Continuity should exist.

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