Infiniti I35 (A33). Manual — part 304

17

CHECK WATER SEPARATOR

1. Check visually for insect nests in the water separator air inlet.
2. Check visually for cracks or flaws in the appearance.
3. Check visually for cracks or flaws in the hose.
4. Check that A and C are not clogged by blowing air into B with A, and then C plugged.

PBIB1032E

5. In case of NG in items 2 - 4, replace the parts.
NOTE:
Do not disassemble water separator.

OK or NG

OK

©

GO TO 18.

NG

©

Clean or replace water separator.

18

CHECK INTERMITTENT INCIDENT

Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-152.

©

INSPECTION END

GI

MA

EM

LC

FE

AT

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

DTC P1444 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Diagnostic Procedure (Cont’d)

EC-557

SEF381Z

SEF267X

Component Description

NHEC1096

The EVAP canister vent control valve is located on the EVAP can-
ister and is used to seal the canister vent.
This solenoid valve responds to signals from the ECM. When the
ECM sends an ON signal, the coil in the solenoid valve is ener-
gized. A plunger will then move to seal the canister vent. The abil-
ity to seal the vent is necessary for the on board diagnosis of other
evaporative emission control system components.
This solenoid valve is used only for diagnosis, and usually remains
opened.
When the vent is closed, under normal purge conditions, the
evaporative emission control system is depressurized and allows
“EVAP Control System (Small Leak)” diagnosis.

CONSULT-II Reference Value in Data Monitor
Mode

NHEC1097

Specification data are reference values.

MONITOR ITEM

CONDITION

SPECIFICATION

VENT CONT/V

I

Ignition switch: ON

OFF

On Board Diagnosis Logic

NHEC1099

DTC No.

Trouble diagnosis

name

DTC Detecting Condition

Possible Cause

P1446
1446

EVAP canister vent
control valve closed

EVAP canister vent control valve remains closed
under specified driving conditions.

I

EVAP canister vent control valve

I

EVAP control system pressure sensor
and the circuit

I

Blocked rubber tube to EVAP canister
vent control valve

I

Water separator

I

EVAP canister is saturated with water.

PBIB0164E

DTC Confirmation Procedure

NHEC1100

CAUTION:

Always drive vehicle at a safe speed.
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.

WITH CONSULT-II

NHEC1100S01

1)

Turn ignition switch ON.

2)

Select “DATA MONITOR” mode with CONSULT-II.

DTC P1446 EVAP CANISTER VENT CONTROL VALVE

Component Description

EC-558

3)

Start engine.

4)

Drive vehicle at a speed of approximately 80 km/h (50 MPH)
for a maximum of 15 minutes.

NOTE:
If a malfunction exists, NG result may be displayed quicker.
5)

If 1st trip DTC is detected, go to “Diagnostic Procedure”,
EC-561.

WITH GST

NHEC1100S02

Follow the procedure “WITH CONSULT-II” above.

GI

MA

EM

LC

FE

AT

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

DTC P1446 EVAP CANISTER VENT CONTROL VALVE

DTC Confirmation Procedure (Cont’d)

EC-559

Wiring Diagram

=NHEC1101

MEC553D

SEF668XC

DTC P1446 EVAP CANISTER VENT CONTROL VALVE

Wiring Diagram

EC-560