Infiniti FX35, FX50 (S51). Manual - part 694

 

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Infiniti FX35, FX50 (S51). Manual - part 694

 

 

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-317

< DTC/CIRCUIT DIAGNOSIS >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

4.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT-II

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.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors B201, M117
• Harness for open between ECM and EVAP control system pressure sensor

>> Repair open circuit.

6.

CHECK SENSOR POWER SUPPLY CIRCUIT

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

Is the inspection result normal?

YES

>> GO TO 7.

NO

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

7.

CHECK COMPONENTS

Check the following.
• CKP sensor (Refer to 

EC-271, "Component Inspection"

.)

• CMP sensor (bank 2) (Refer to 

EC-277, "Component Inspection"

.)

• EVT control position sensor (bank 2) (Refer to 

EC-369, "Component Inspection"

.)

• Battery current sensor (Refer to 

EC-400, "Component Inspection"

.)

• Refrigerant pressure sensor (Refer to 

HAC-84, "Diagnosis Procedure"

.)

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Replace malfunctioning component.

8.

CHECK APP SENSOR

EVAP control system 

pressure sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

B252

3

M107

107

Existed

ECM

Sensor

Connector

Terminal

Name

Connector

Terminal

F101

46

Crankshaft position (CKP) sensor

F2

1

F102

64

Camshaft position (CMP) sensor (bank 
2)

F18

1

Exhaust valve timing (EVT) control posi-
tion sensor (bank 2)

F19

1

Battery current sensor

E21

1

M107

103

Accelerator pedal position (APP) sensor

E112

(Without ICC)

6

E116

(With ICC)

3

107

EVAP control system pressure sensor

B252

3

111

Refrigerant pressure sensor

E77

3

EC-318

< DTC/CIRCUIT DIAGNOSIS >

[VQ35HR]

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to 

EC-444, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 15.

NO

>> GO TO 9.

9.

REPLACE ACCELERATOR PEDAL ASSEMBLY

1.

Replace accelerator pedal assembly

2.

Go to 

EC-445, "Special Repair Requirement"

.

>> INSPECTION END

10.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND

SHORT

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 short to power.

Is the inspection result normal?

YES

>> GO TO 12.

NO

>> GO TO 11.

11.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors B201, M117
• 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.

12.

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

SHORT

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 short to power.

Is the inspection result normal?

YES

>> GO TO 14.

NO

>> GO TO 13.

13.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors B201, M117
• 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.

EVAP control system 

pressure sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

B252

1

M107

112

Existed

EVAP control system 

pressure sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

B252

2

M107

102

Existed

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-319

< DTC/CIRCUIT DIAGNOSIS >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

14.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to 

EC-319, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 15.

NO

>> Replace EVAP control system pressure sensor.

15.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-36, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000005236905

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 terminals under the
following 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).

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace EVAP control system pressure sensor

ECM

Condition

[Applied vacuum kPa (kg/cm

2

, psi)]

Voltage (V)

Connector

+

Terminal

Terminal

M107

102

112

Not applied

1.8 - 4.8

-26.7 (-0.272, -3.87)

2.1 to 2.5 lower than above value

EC-320

< DTC/CIRCUIT DIAGNOSIS >

[VQ35HR]

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

Description

INFOID:0000000005236906

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

DTC Logic

INFOID:0000000005236907

DTC DETECTION 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

PBIB3370E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0453

EVAP control system 
pressure sensor high in-
put

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

• Harness or connectors

(EVAP control system pressure sensor 
circuit is open or shorted.)
[Crankshaft position (CKP) sensor circuit 
is shorted.]
[Camshaft position (CMP) sensor (bank 
2) circuit is shorted.]
[Exhaust valve timing (EVT) control posi-
tion sensor (bank 2) circuit is shorted.]
(Battery current sensor circuit is shorted.)
[Accelerator pedal position (APP) sensor 
2 circuit is shorted.]
(Refrigerant pressure sensor circuit is 
shorted.)

• EVAP control system pressure sensor
• CKP sensor
• CMP sensor (bank 2)
• EVT control position sensor (bank 2)
• Battery current sensor
• APP sensor
• Refrigerant pressure sensor
• EVAP canister vent control valve
• EVAP canister
• Rubber hose from EVAP canister vent 

control valve to vehicle frame

 

 

 

 

 

 

 

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