Infiniti G35 (V35) Sedan. Manual - part 539

 

  Index      Infiniti     Infiniti G35 (V35) Sedan - service repair manual 2007 year

 

Search            

 

 

 

 

 

 

 

  

 

Content   ..  537  538  539  540   ..

 

 

Infiniti G35 (V35) Sedan. Manual - part 539

 

 

EC-302

< COMPONENT DIAGNOSIS >

[VQ35HR]

P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

>> 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 B251, B31
• Harness connectors B1, M7
• 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.

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 B251, B31
• Harness connectors B1, M7
• 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.

14.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to 

EC-303, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 15.

NO

>> Replace EVAP control system pressure sensor.

15.

CHECK INTERMITTENT INCIDENT

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-303

< COMPONENT DIAGNOSIS >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Refer to 

GI-39, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000000956682

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 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).

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace EVAP control system pressure sensor

ECM

Ground

Condition

[Applied vacuum kPa (kg/cm

2

, psi)]

Voltage

Connector

Terminal

M107

102

Ground

Not applied

1.8 - 4.8V

-26.7 (-0.272, -3.87)

2.1 to 2.5V lower than above value

EC-304

< COMPONENT DIAGNOSIS >

[VQ35HR]

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

Description

INFOID:0000000000956683

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:0000000000956684

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

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.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

 With CONSULT-III

1.

Start engine and warm it up to normal operating temperature.

2.

Turn ignition switch OFF and wait at least 10 seconds.

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.)
[CKP sensor (POS) circuit is shorted.]
[CMP sensor (PHASE) (bank 2) circuit is 
shorted.]
[EVT control position sensor (bank 2) cir-
cuit is shorted.]
(Battery current sensor circuit is shorted.)
(APP sensor 2 circuit is shorted.)
(Refrigerant pressure sensor circuit is 
shorted.)

• EVAP control system pressure sensor
• Crankshaft position sensor (POS)
• Camshaft position sensor (PHASE) 

(bank 2)

• Exhaust valve timing control position sen-

sor (bank 2)

• Battery current sensor
• Accelerator pedal position sensor
• Refrigerant pressure sensor
• EVAP canister vent control valve
• EVAP canister
• Rubber hose from EVAP canister vent 

control valve to vehicle frame

P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-305

< COMPONENT DIAGNOSIS >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

3.

Turn ignition switch ON.

4.

Select “DATA MONITOR” mode with CONSULT-III.

5.

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

°

C (32

°

F).

6.

Start engine and wait at least 20 seconds.

7.

Check 1st trip DTC.

 With GST

1.

Start engine and warm it up to normal operating temperature.

2.

Set voltmeter probes to ECM harness connector and ground as follows.

3.

Make sure that the voltage is less than 4.2V.

4.

Turn ignition switch OFF and wait at least 10 seconds.

5.

Start engine and wait at least 20 seconds.

6.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Go to 

EC-305, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000000956685

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection M95. Refer to Ground Inspection in 

GI-42, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK CONNECTOR

1.

Disconnect EVAP control system pressure sensor harness connector.

2.

Check sensor harness connector for water.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness connector.

3.

CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY CIRCUIT

1.

Turn ignition switch ON.

2.

Check the voltage between EVAP control system pressure sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> GO TO 4.

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.

ECM

Ground

Connector

Terminal

M107

106

(Fuel tank temperature sensor signal)

Ground

Water should not exist.

EVAP control system pressure sensor

Ground

Voltage

Connector

Terminal

B252

3

Ground

Approx. 5V

 

 

 

 

 

 

 

Content   ..  537  538  539  540   ..