Infiniti EX35. Manual - part 635

 

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Infiniti EX35. Manual - part 635

 

 

EC-282

< COMPONENT DIAGNOSIS >

[VQ35HR]

P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

4.

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

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace EVAP canister purge volume control solenoid

valve

Condition

Air passage continuity 

between (A) and (B)

12V direct current supply between 
terminals 1 and 2

Existed

No supply

Not existed

JMBIA0068ZZ

P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID 

VALVE

EC-283

< COMPONENT DIAGNOSIS >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID
VALVE

Description

INFOID:0000000003133432

The EVAP canister purge volume control solenoid valve uses a ON/
OFF duty to control the flow rate of fuel vapor from the EVAP canis-
ter. The EVAP canister purge volume control solenoid valve is
moved by ON/OFF pulses from the ECM. The longer the ON pulse,
the greater the amount of fuel vapor that will flow through the valve.

DTC Logic

INFOID:0000000003133433

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CONDITIONING

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:
Before performing the following procedure, confirm battery voltage is more than 11 V at idle.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start engine and let it idle for at least 13 seconds.

2.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Go to 

EC-283, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000003133434

1.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect EVAP canister purge volume control solenoid valve harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between EVAP canister purge volume control solenoid valve harness connector and
ground.

JMBIA0069ZZ

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0444

EVAP canister purge volume 
control solenoid valve circuit 
open

An excessively low voltage signal is sent 
to ECM through the valve

• Harness or connectors

(The solenoid valve circuit is open or 
shorted.)

• EVAP canister purge volume control so-

lenoid valve

P0445

EVAP canister purge volume 
control solenoid valve circuit 
shorted

An excessively high voltage signal is sent 
to ECM through the valve

• Harness or connectors

(The solenoid valve circuit is shorted.)

• EVAP canister purge volume control so-

lenoid valve

EC-284

< COMPONENT DIAGNOSIS >

[VQ35HR]

P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID 

VALVE

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E106, M6
• Harness connectors M116, F103
• Harness for open or short between EVAP canister purge volume control solenoid valve and IPDM E/R
• Harness for open or short between EVAP canister purge volume control solenoid valve and ECM

>> 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 CIRCUIT

FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between EVAP canister purge volume control solenoid valve harness connector and
ECM harness connector.

4.

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

Is the inspection result normal?

YES-1 >> With CONSULT-III: GO TO 5.
YES-2 >> Without CONSULT-III: GO TO 6.
NO

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors F104, F105
• Harness for open or short between EVAP canister purge volume control solenoid valve and ECM

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

5.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

With CONSULT-III

1.

Reconnect all harness connectors disconnected.

2.

Start engine.

3.

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

Does engine speed vary according to the valve opening?

YES

>> GO TO 7.

NO

>> GO TO 6.

6.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to 

EC-285, "Component Inspection"

.

Is the inspection result normal?

EVAP canister purge vol-

ume control solenoid valve

Ground

Voltage

Connector

Terminal

F7

1

Ground

Battery voltage

EVAP canister purge vol-

ume control solenoid valve

ECM

Continuity

Connector

Terminal

Connector

Terminal

F7

2

F101

21

Existed

P0444, P0445 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID 

VALVE

EC-285

< COMPONENT DIAGNOSIS >

[VQ35HR]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

YES

>> GO TO 7.

NO

>> Replace EVAP canister purge volume control solenoid valve.

7.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000003133435

1.

CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT-III

1.

Turn ignition switch OFF.

2.

Reconnect all harness connectors disconnected.

3.

Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.

4.

Turn ignition switch ON.

5.

Select “PURG VOL CONT/V” in “ACTIVE TEST” mode with CONSULT-III.

6.

Touch “Qd” and “Qu” on CONSULT-III screen to adjust “PURG
VOL CONT/V” opening and check air passage continuity of
EVAP canister purge volume control solenoid valve under the
following conditions.

Without CONSULT-III

1.

Turn ignition switch OFF.

2.

Disconnect EVAP canister purge volume control solenoid valve harness connector.

3.

Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.

4.

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

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace EVAP canister purge volume control solenoid

valve

Condition

(PURG VOL CONT/V value)

Air passage continuity 

between (A) and (B)

100%

Existed

0%

Not existed

JMBIA0068ZZ

Condition

Air passage continuity 

between (A) and (B)

12V direct current supply between 
terminals 1 and 2

Existed

No supply

Not existed

JMBIA0068ZZ

 

 

 

 

 

 

 

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