Infiniti FX35 / FX45. Manual - part 551

 

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Infiniti FX35 / FX45. Manual - part 551

 

 

DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-965

< SERVICE INFORMATION >

[VK45DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

• 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-965, "Component Inspection"

.

OK or NG

OK

>> GO TO 10.

NG

>> Replace EVAP control system pressure sensor.

10.

CHECK INTERMITTENT INCIDENT

Refer to 

EC-717

.

>> INSPECTION END

Component Inspection

INFOID:0000000001326808

EVAP CONTROL SYSTEM PRESSURE SENSOR

1.

Remove EVAP control system pressure sensor with its harness connector connected from EVAP canister.
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 32 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).

4.

If NG, replace EVAP control system pressure sensor.

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

PBIB1173E

EC-966

< SERVICE INFORMATION >

[VK45DE]

DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

Component Description

INFOID:0000000001326809

The EVAP control system pressure sensor detects pressure in the purge line. The sensor output voltage to the
ECM increases as pressure increases.

CONSULT-III Reference Value in Data Monitor Mode

INFOID:0000000001326810

Specification data are reference values.

On Board Diagnosis Logic

INFOID:0000000001326811

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

EC-1009

.

DTC Confirmation Procedure

INFOID:0000000001326812

NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Always perform test at a temperature of 5

°

C (41

°

F) or more.

 WITH CONSULT-III

PBIB1522E

PBIB1207E

MONITOR ITEM

CONDITION

SPECIFICATION

EVAP SYS PRES

• Ignition switch: ON

Approx. 1.8 - 4.8V

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
• Rubber hose from EVAP canister vent 

control valve to vehicle frame

DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-967

< SERVICE INFORMATION >

[VK45DE]

C

D

E

F

G

H

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EC

N

P

O

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.

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

°

C (32

°

F).

5.

Start engine and wait at least 20 seconds.

6.

Check 1st trip DTC.

7.

If 1st trip DTC is detected, go to 

EC-969, "Diagnosis Procedure"

.

 WITH GST

1.

Start engine and warm it up to normal operating temperature.

2.

Check that voltage between ECM terminal 107 (Fuel tank tem-
perature 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.

If 1st trip DTC is detected, go to 

EC-969, "Diagnosis Procedure"

.

PBIB1110E

EC-968

< SERVICE INFORMATION >

[VK45DE]

DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

Wiring Diagram

INFOID:0000000001326813

Specification data are reference values and are measured between each terminal and ground.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

TBWM1340E

 

 

 

 

 

 

 

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