2014 NISSAN TEANA Service Manual

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Page 1841 of 4801

NISSAN TEANA 2014 Service Manual
P0447 EVAP CANISTER VENT CONTROL VALVEEC-841
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
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3. Turn ignition switch ON.
4. Check the voltage between EVAP canister vent control

P0447 EVAP CANISTER VENT CONTROL VALVEEC-841
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
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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 4.
NO >> Perform the trouble diagnosis for power supply circuit.
4.CHECK EVAP CANISTER VENT CONTRO L VALVE OUTPUT SIGNAL CIRCUIT
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 5.
NO >> Repair open circuit, short to ground or short to power in harness or connectors.
5.CHECK RUBBER TUBE FOR CLOGGING
1. Disconnect rubber tube connected to EV AP canister vent control valve.
2. Check the rubber tube for clogging.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Clean the rubber tube using an air blower.
6.CHECK EVAP CANISTER VENT CONTROL VALVE
Check EVAP canister vent control valve. Refer to EC-841, "Component Inspection"
.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Replace EVAP canister vent control valve. Refer to FL-17, "Removal and Installation"
.
Component InspectionINFOID:0000000009462691
1.CHECK EVAP CANISTER VENT CONTROL VALVE-I
1. Remove EVAP canister vent control valve from EVAP canister. Refer to FL-17, "Exploded View"
.
2. Check portion (A) of EVAP canister vent control valve for rust.
Is it rusted?
YES >> Replace EVAP canister vent control valve. Refer to FL-
18, "Removal and Installation".
NO >> GO TO 2.
2.CHECK EVAP CANISTER VENT CONTROL VALVE-II
EVAP canister vent control valve Ground Voltage
Connector Terminal
B39 1 Ground Battery voltage
EVAP canister vent control valve ECM Continuity
Connector Terminal Connector Terminal
B39 2 E32 106 Existed
JMBIA0168ZZ
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

Page 1842 of 4801

NISSAN TEANA 2014 Service Manual
EC-842
< DTC/CIRCUIT DIAGNOSIS >[VQ35DE]
P0447 EVAP CANISTER VENT CONTROL VALVE
With CONSULT
1. Reconnect harness connectors disconnected.
2. Turn ignition switch ON.
3. Perform “VENT CONTROL/V�

EC-842
< DTC/CIRCUIT DIAGNOSIS >[VQ35DE]
P0447 EVAP CANISTER VENT CONTROL VALVE
With CONSULT
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
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.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 3.
3.CHECK EVAP CANISTER VE NT CONTROL VALVE-III
With CONSULT
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
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. Refer to FL-17, "Removal and Installation"
.
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
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
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

Page 1843 of 4801

NISSAN TEANA 2014 Service Manual
P0448 EVAP CANISTER VENT CONTROL VALVEEC-843
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
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P0448 EVAP CANISTER VENT CONTROL VALVE
DTC LogicINFOID:0000000009462692
DTC DETECTION

P0448 EVAP CANISTER VENT CONTROL VALVEEC-843
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
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P0448 EVAP CANISTER VENT CONTROL VALVE
DTC LogicINFOID:0000000009462692
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conduc ted, 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
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.
4. Start engine and let it idle for at least 1 minute.
5. Repeat next procedures 3 times.
- Increase the engine speed up to 3,000 to 3,500 rpm and keep it for 2 minutes and 50 seconds to 3 min-
utes.
Never exceed 3 minutes.
- Fully released accelerator pedal and keep engine idle for about 5 seconds.
6. Repeat next procedure 20 times.
- Quickly increase the engine speed up to 4,000 to 4,500 rpm or more and keep it for 25 to 30 seconds.
- Fully released accelerator pedal and keep engine idle for at least 35 seconds.
7. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-843, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462693
1.CHECK RUBBER TUBE
1. Turn ignition switch OFF.
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
PBIB0972E
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

Page 1844 of 4801

NISSAN TEANA 2014 Service Manual
EC-844
< DTC/CIRCUIT DIAGNOSIS >[VQ35DE]
P0448 EVAP CANISTER VENT CONTROL VALVE
2. Disconnect rubber tube connected to EV
AP canister vent control valve.
3. Check the rubber tube for clogging.
Is th

EC-844
< DTC/CIRCUIT DIAGNOSIS >[VQ35DE]
P0448 EVAP CANISTER VENT CONTROL VALVE
2. Disconnect rubber tube connected to EV
AP canister vent control valve.
3. Check the rubber tube for clogging.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Clean rubber tube using an air blower.
2.CHECK EVAP CANISTER VENT CONTROL VALVE
Check EVAP canister vent control valve. Refer to EC-845, "Component Inspection"
.
Is he inspection result normal?
YES >> GO TO 3.
NO >> Replace EVAP canister vent control valve. Refer to FL-17, "Removal and Installation"
.
3.CHECK IF EVAP CANISTER SATURATED WITH WATER
1. Remove EVAP canister with EVAP canister vent control valve and EVAP control system pressure sensor
attached. Refer to FL-17, "Removal and Installation"
.
2. Check if water will drain from the EVAP canister.
Does water drain from the EVAP canister?
YES >> GO TO 4.
NO >> GO TO 6.
4.CHECK EVAP CANISTER
Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sensor
attached.
The weight should be less than 2.1 kg (4.6 lb).
Is the inspection result normal?
YES >> GO TO 6.
NO >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
• EVAP canister for damage
• EVAP hose between EVAP canister and vehicle frame for clogging or poor connection
>> Repair hose or replace EVAP canister. Refer to FL-14, "Exploded View"
.
6.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR
1. Disconnect EVAP control system pressure sensor harness connector.
2. Check that water is not inside connectors.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Replace EVAP control system pressure sensor. Refer to FL-18, "Removal and Installation"
.
7.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Check EVAP control system pressure sensor. Refer to EC-849, "Component Inspection"
.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Replace EVAP control system pressure sensor. Refer to FL-18, "Removal and Installation"
.
JMBIA1134GB
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

Page 1845 of 4801

NISSAN TEANA 2014 Service Manual
P0448 EVAP CANISTER VENT CONTROL VALVEEC-845
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
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Component InspectionINFOID:0000000009462694
1.CHECK EVAP CANISTER VENT CONTROL VALVE-I

Page 1846 of 4801

NISSAN TEANA 2014 Service Manual
EC-846
< DTC/CIRCUIT DIAGNOSIS >[VQ35DE]
P0448 EVAP CANISTER VENT CONTROL VALVE
3. Check air passage continuity and operation delay time.
Check that new O-ring is installed properly.
Operation takes

Page 1847 of 4801

NISSAN TEANA 2014 Service Manual
P0451 EVAP CONTROL SYSTEM PRESSURE SENSOREC-847
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
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P0451 EVAP CONTROL SYST
EM PRESSURE SENSOR
DTC LogicINFOID:0000000009462695
DTC DET

P0451 EVAP CONTROL SYSTEM PRESSURE SENSOREC-847
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
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P0451 EVAP CONTROL SYST
EM PRESSURE SENSOR
DTC LogicINFOID:0000000009462695
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
NOTE:
Never remove fuel filler cap du ring DTC confirmation procedure.
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting 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.
With CONSULT>>GO TO 2.
Without CONSULT>>GO TO 5.
2.PERFORM DTC CONFIRMATION PROCEDURE-1
With CONSULT
1. Start engine and let it idle for least 40 seconds. NOTE:
Do not depress accelerator pedal even slightly.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-848, "Diagnosis Procedure".
NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE-2
With CONSULT
1. Select “EVAP DIAG READY” in “DATA MONITOR” mode of “ENGINE”.
2. Let it idle until “OFF” of “EVAP DIAG READY” changes to “ON”. NOTE:
It will take at most 2 hours until “OFF” of “EVAP DIAG READY” changes to “ON”.
3. Turn ignition switch OFF and wait at least 90 minutes. NOTE:
Never turn ignition swit ch ON during 90 minutes.
4. Turn ignition switch ON.
5. Select “EVAP LEAK DIAG” in “DATA MONITOR” mode of “ENGINE”.
6. Check that “EVAP LEAK DIAG” indication.
Which is displayed on CONSULT?
CMPLT >> GO TO 4.
YET >> 1. Perform DTC CONF IRMATION PROCEDURE again.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0451 EVAP control system
pressure sensor perfor-
mance ECM detects a sloshing signal from the EVAP
control system pressure sensor • Harness or connectors
(EVAP control system pressure sensor
circuit is shorted.)
[CKP sensor (POS) circuit is shorted.]
(APP sensor 2 circuit is shorted.)
(Refrigerant pressure sensor circuit is
shorted.)
• EVAP control system pressure sensor
• Crankshaft position sensor (POS)
• Accelerator pedal position sensor
• Refrigerant pressure sensor
• Sensor power supply 2 circuit
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

Page 1848 of 4801

NISSAN TEANA 2014 Service Manual
EC-848
< DTC/CIRCUIT DIAGNOSIS >[VQ35DE]
P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR
2. GO TO 1.
4.PERFORM DTC CONFIRMATION PROCEDURE-3
With CONSULT
Check 1st trip DTC.
Is 1st trip DTC detected?
YES >

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