Infiniti M45 (Y34). Manual - part 418

DTC P0452 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-361

C

D

E

F

G

H

I

J

K

L

M

A

EC

12. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

Component Inspection

ABS002KU

EVAP CONTROL SYSTEM PRESSURE SENSOR

1.

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

2.

Remove hose from EVAP control system pressure sensor.

3.

Install a vacuum pump to EVAP control system pressure sensor.

4.

Turn ignition switch ON.

5.

Use pump to apply vacuum and pressure to EVAP control sys-
tem pressure sensor as shown in figure.

CAUTION:

●

Always calibrate the vacuum pump gauge when using it.

●

Do not apply below -93.3 kPa (-700 mmHg, -27.56 inHg) or
pressure over 101.3 kPa (760 mmHg, 29.92 inHg).

6.

Check voltage between ECM terminal 110 and ground with
CONSULT-II or tester.

CAUTION:

Discard any EVAP control system pressure sensor which has dropped from a height of more than
0.5 m (19.7 in) onto a hard surface such a concrete floor; use a new one.

7.

If NG, replace EVAP control system pressure sensor.

Applied vacuum kPa

(mmHg, inHg)

Voltage V

Not applied

1.8 - 4.8

-26.7 (-200 mmHg, -7.87)

2.1 to 2.5V lower than above value

PBIB0156E

EC-362

DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

PFP:25085

Component Description

ABS002KV

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

CONSULT-II Reference Value in Data Monitor Mode

ABS002KW

Specification data are reference values.

On Board Diagnosis Logic

ABS002KX

NOTE:
If DTC P0453 is displayed with DTC P1229, first perform the trouble diagnosis for DTC P1229.
Refer to 

EC-531

 .

PBIB0026E

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 input

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

●

Water separator

●

Rubber hose from EVAP canister vent 
control valve to water separator

DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

EC-363

C

D

E

F

G

H

I

J

K

L

M

A

EC

DTC Confirmation Procedure

ABS002KY

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 more than 5

°

C (41

°

F).

 WITH CONSULT-II

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.

Select “DATA MONITOR” mode with CONSULT-II.

5.

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

°

C (32

°

F).

6.

Wait at least 10 seconds.

7.

If 1st trip DTC is detected, go to 

EC-365, "Diagnostic Procedure"

.

 WITH GST

1.

Start engine and warm it up to normal operating temperature.

2.

Check that voltage between ECM terminal 92 (Fuel tank temper-
ature sensor signal) and ground is less than 4.2V.

3.

Turn ignition switch OFF and wait at least 10 seconds.

4.

Wait at least 10 seconds.

5.

Select “MODE 7” with GST.
If 1st trip DTC is detected, go to 

EC-365, "Diagnostic Procedure"

.

SEF194Y

SEF340X

EC-364

DTC P0453 EVAP CONTROL SYSTEM PRESSURE SENSOR

Wiring Diagram

ABS002KZ

TBWA0292E