Nissan Frontier. Manual - part 434

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-307

< DTC/CIRCUIT DIAGNOSIS >

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WITH GST

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

2. Check that voltage between ECM terminal 95 (Fuel tank temperature sensor signal) and ground is less

than 4.2V.

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

4. Start engine and wait at least 20 seconds.

5. Select Service $07 with GST.

6. Check 1st trip DTC.

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

EC-307, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009480972

1.

CHECK GROUND CONNECTIONS

1. Turn ignition switch OFF.

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

EC-149, "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 that water is not inside connector.
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

BBIA0614E

ALBIA0514ZZ

Voltage: Approximately 5V

PBIB0138E

EC-308

< DTC/CIRCUIT DIAGNOSIS >

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P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

• 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.

5.

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

96.

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, 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 86 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, short to ground or short to power in harness or connectors.

9.

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

OK

>> GO TO 10.

NG

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

10.

CHECK EVAP CANISTER VENT CONTROL VALVE

Refer to 

EC-292, "Component Inspection"

.

OK or NG

OK

>> GO TO 11.

NG

>> Replace EVAP canister vent control valve. Refer to 

FL-14, "Removal and Installation"

.

Continuity should exist.

Continuity should exist.

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-309

< DTC/CIRCUIT DIAGNOSIS >

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11.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to 

EC-309, "Component Inspection"

.

OK or NG

OK

>> GO TO 12.

NG

>> Replace EVAP control system pressure sensor. Refer to 

FL-14, "Removal and Installation"

.

12.

CHECK IF EVAP CANISTER IS SATURATED WITH WATER

1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor

attached.

2. Does water drain from the EVAP canister?
Yes or No

Yes

>> GO TO 13.

No

>> GO TO 15.

13.

CHECK EVAP CANISTER

Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sen-

sorattached.

The weight should be less than 2.0 kg (4.4 lb).
OK or NG

OK

>> GO TO 15.

NG

>> GO TO 14.

14.

DETECT MALFUNCTIONING PART

Check the following.

• EVAP canister for damage

• EVAP hose connected to EVAP canister and vehicle frame for clogging or poor connection

>> Repair hose or replace EVAP canister. Refer to 

FL-14, "Component Inspection"

.

15.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

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EVAP CONTROL PRESSURE SENSOR

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

Always replace O-ring 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 86 and ground under the follow-

ing conditions.

CAUTION:

BBIA0558E

Applied vacuum kPa

(kg/cm

2

, psi)

Voltage (V)

Not applied

1.8 - 4.8

-26.7 (-200, -7.87)

2.1 to 2.5V lower than above value

EC-310

< DTC/CIRCUIT DIAGNOSIS >

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P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

• 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.