Nissan Altima L32. Manual - part 551

 

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Nissan Altima L32. Manual - part 551

 

 

P0447 EVAP CANISTER VENT CONTROL VALVE

EC-1325

< COMPONENT DIAGNOSIS >

[VQ35DE]

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1. Turn ignition switch OFF and then ON.

2. Select “VENT CONTROL/V” in “ACTIVE TEST” mode with CONSULT-III.

3. Touch “ON/OFF” on CONSULT-III screen.

4. Check for operating sound of the valve.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 3.

3.

CHECK EVAP CANISTER VENT CONTROL VALVE POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect EVAP canister vent control valve harness connector.

3. Turn ignition switch ON.

4. Check the voltage between EVAP canister vent control valve

harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors B10, E29

• Harness connectors E11, F2

• Harness for open or short between EVAP canister vent control valve and IPDM E/R

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

5.

CHECK EVAP CANISTER VENT CONTROL VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between ECM harness connector and EVAP canister vent control valve harness con-

nector.

Refer to Wiring Diagram.

4. Also check harness for short to ground and short to power.
Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 6.

6.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors B10, E29

• Harness for open or short between EVAP canister vent control valve and ECM

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

7.

CHECK RUBBER TUBE FOR CLOGGING

Clicking sound should be heard.

EVAP canister vent control valve

Ground

Voltage

Connector

Terminal

B39

1

Ground

Battery voltage

PBIB0080E

EVAP canister vent control valve

ECM

Continuity

Connector

Terminal

Connector

Terminal

B39

2

E10

109

Existed

EC-1326

< COMPONENT DIAGNOSIS >

[VQ35DE]

P0447 EVAP CANISTER VENT CONTROL VALVE

1. Disconnect rubber tube connected to EVAP canister vent control valve.

2. Check the rubber tube for clogging.
Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Clean the rubber tube using an air blower.

8.

CHECK EVAP CANISTER VENT CONTROL VALVE

Refer to 

EC-1326, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Replace EVAP canister vent control valve.

9.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-42, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000004362168

1.

CHECK EVAP CANISTER VENT CONTROL VALVE-I

1. Remove EVAP canister vent control valve from EVAP canister.

2. Check portion (A) of EVAP canister vent control valve for rust.
Is it rusted?

YES

>> Replace EVAP canister vent control valve.

NO

>> GO TO 2.

2.

CHECK EVAP CANISTER VENT CONTROL VALVE-II

With CONSULT-III

1. Reconnect harness connectors disconnected.

2. Turn ignition switch ON.

3. Perform “VENT CONTROL/V” in “ACTIVE TEST” mode.

4. Check air passage continuity and operation delay time.

Check that new O-ring is installed properly.

Operation takes less than 1 second.

Without CONSULT-III

1. Disconnect EVAP canister vent control valve harness connector.

2. Check air passage continuity and operation delay time under the

following conditions.

Check that new O-ring is installed properly.

Operation takes less than 1 second.

JMBIA0168ZZ

Condition VENT CONTROL/V

Air passage continuity between (A) and (B)

ON

Not existed

OFF

Existed

Condition

Air passage continuity between (A) and (B)

12 V direct current supply between
 terminals 1 and 2

Not existed

OFF

Existed

JMBIA0169ZZ

P0447 EVAP CANISTER VENT CONTROL VALVE

EC-1327

< COMPONENT DIAGNOSIS >

[VQ35DE]

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Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 3.

3.

CHECK EVAP CANISTER VENT CONTROL VALVE-III

With CONSULT-III

1. Clean the air passage [portion (A) to (B)] of EVAP canister vent control valve using an air blower.

2. Perform “VENT CONTROL/V” in “ACTIVE TEST” mode.

3. Check air passage continuity and operation delay time.

Check that new O-ring is installed properly.

Operation takes less than 1 second.

Without CONSULT-III

1. Clean the air passage [portion (A) to (B)] of EVAP canister vent

control valve using an air blower.

2. Check air passage continuity and operation delay time under the

following conditions.

Check that new O-ring is installed properly.

Operation takes less than 1 second.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace EVAP canister vent control valve

Condition VENT CONTROL/V

Air passage continuity between (A) and (B)

ON

No

OFF

Yes

Condition

Air passage continuity between (A) and (B)

12 V direct current supply between
 terminals (1) and (2)

No

OFF

Yes

JMBIA0169ZZ

EC-1328

< COMPONENT DIAGNOSIS >

[VQ35DE]

P0448 EVAP CANISTER VENT CONTROL VALVE

P0448 EVAP CANISTER VENT CONTROL VALVE

Description

INFOID:0000000004362169

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.

DTC Logic

INFOID:0000000004362170

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT-III

1. Turn ignition switch ON and wait at least 5 seconds.

2. Turn ignition switch OFF and wait at least 10 seconds.

3. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.

4. Start engine and let it idle for at least 1 minute. 

5. Repeat next procedures 3 times.

-

Increase the engine speed up to between 3,000 and 3,500 rpm and maintain that speed it for 2 minutes

and 50 seconds to 3 minutes.

Never exceed 3 minutes.

-

Fully released accelerator pedal and keep engine idle for approximately 5 seconds.

6. Repeat next procedure 20 times.

-

Quickly increase the engine speed up to between 4,000 and 4,500 rpm and maintain that speed it for 25

to 30 seconds.

PBIB1263E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P0448

EVAP canister vent con-
trol valve close

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

• EVAP canister vent control valve
• EVAP control system pressure sensor 

and the circuit

• Blocked rubber tube to EVAP canister 

vent control valve

• EVAP canister is saturated with water

 

 

 

 

 

 

 

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