Infiniti M45 (Y34). Manual - part 414

 

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Infiniti M45 (Y34). Manual - part 414

 

 

DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID 

VALVE

EC-345

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EC

Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.

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.

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)

Diagnostic Procedure

ABS002KE

1. 

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIR-

CUIT

1.

Turn ignition switch OFF.

2.

Disconnect EVAP canister purge volume control solenoid valve
harness connector.

3.

Turn ignition switch ON.

4.

Check voltage between EVAP canister purge volume control
solenoid valve terminal 1 and ground with CONSULT-II or tester.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 2.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

54

L/Y

EVAP canister purge volume 
control solenoid valve

[Engine is running]

Idle speed

BATTERY VOLTAGE

(11 - 14V)

[Engine is running]

Engine speed is about 2,000 rpm (More 
than 100 seconds after starting engine).

BATTERY VOLTAGE

(11 - 14V)

PBIB0050E

PBIB0051E

PBIB1120E

Voltage: Battery voltage

PBIB0148E

EC-346

DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID 

VALVE

2. 

DETECT MALFUNCTIONING PART

Check the following.

Harness connectors E33, F33

Fuse, fusible link and relay block (J/B) connector E3

10A fuse

Harness for open or short between EVAP canister purge volume control solenoid valve and fuse

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

3. 

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OUTPUT SIGNAL CIR-

CUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between ECM terminal 54 and EVAP canister purge volume control solenoid
valve terminal 2. Refer to Wiring Diagram.

4.

Also check harness for short to ground and short to power.

OK or NG

OK (With CONSULT-II)>>GO TO 4.
OK (Without CONSULT-II)>>GO TO 5.
NG

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

4. 

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

 With CONSULT-II

1.

Reconnect all harness connectors disconnected.

2.

Start engine.

3.

Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode with
CONSULT-II. Check that engine speed varies according to the
valve opening.

OK or NG

OK

>> GO TO 6.

NG

>> GO TO 5.

5. 

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to 

EC-347, "Component Inspection"

 .

OK or NG

OK

>> GO TO 6.

NG

>> Replace EVAP canister purge volume control solenoid valve.

6. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

Continuity should exist.

PBIB0147E

DTC P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID 

VALVE

EC-347

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Component Inspection

ABS002KF

EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

 With CONSULT-II

Check air passage continuity of EVAP canister purge volume control
solenoid valve under the following conditions.

 Without CONSULT-II

Check air passage continuity of EVAP canister purge volume control
solenoid valve under the following conditions.

Removal and Installation

ABS002KG

EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to 

EM-18, "INTAKE MANIFOLD"

 .

Condition

(PURG VOL CONT/V value)

Air passage continuity 

between A and B

100%

Yes

0%

No

PBIB0149E

Condition

Air passage continuity 

between A and B

12V direct current supply between 
terminals 1 and 2

Yes

No supply

No

PBIB0150E

EC-348

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

DTC P0447 EVAP CANISTER VENT CONTROL VALVE

PFP:14935

Component Description

ABS002KH

The EVAP canister vent control valve is located on the EVAP canis-
ter 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 energized.
A plunger will then move to seal the canister vent. The ability 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 evapo-
rative emission control system is depressurized and allows “EVAP
Control System” diagnosis.

CONSULT-II Reference Value in Data Monitor Mode

ABS002KI

Specification data are reference values.

On Board Diagnosis Logic

ABS002KJ

SEF032W

PBIB0026E

MONITOR ITEM

CONDITION

SPECIFICATION

VENT CONT/V

Ignition switch: ON

OFF

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0447
0447

EVAP canister vent con-
trol valve circuit open

An improper voltage signal is sent to ECM 
through EVAP canister vent control valve.

Harness or connectors
(The valve circuit is open or shorted.)

EVAP canister vent control valve

 

 

 

 

 

 

 

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