2014 NISSAN TEANA Sec pressure

P0300, P0301, P0302, P0303, P0304 MISFIRE
EC-321
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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YES >> GO TO 7.
NO >> Check ignition coil, power transistor and their circuits. Refer to EC-511, "Diagnosis Procedure"
.
7.CHECK SPARK PLUG
Check the initial spark plug for fouling, etc.
Is the inspection result normal?
YES >> Replace spark plug(s) with standard type one(s). For spark plug type, refer to EM-111, "Standard and Limit"
.
NO >> Repair or clean spark plug. Then GO TO 8.
8.CHECK FUNCTION OF IGNITION COIL-3
1. Reconnect the initial spark plugs.
2. Crank engine for about 3 seconds, and recheck whether spark is generated between the spark plug and the grounded portion.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace spark plug(s) with standard type one(s). For spark plug type. Refer to EM-111, "Standard
and Limit".
9.CHECK COMPRESSION PRESSURE
Check compression pressure. Refer to EM-26, "Compression pressure"
.
Is the inspection result normal?
YES >> GO TO 10.
NO >> Check pistons, piston rings, valves, valve seats and cylinder head gaskets.
10.CHECK FUEL PRESSURE
1. Install all removed parts.
2. Release fuel pressure to zero.
3. Install fuel pressure gauge and check fuel pressure. Refer to EC-182, "Work Procedure"
.
Is the inspection result normal?
YES >> GO TO 12.
NO >> GO TO 11.
11 .DETECT MALFUNCTIONING PART
Check fuel hoses and fuel tubes for clogging.
Is the inspection result normal?
YES >> Replace “fuel filter and fuel pump assembly”. Refer to FL-6, "Removal and Installation".
NO >> Repair or replace.
12.CHECK IGNITION TIMING
Check the following items.
For procedure, refer to EC-170, "Work Procedure"
.
For specification, refer to EC-541, "Ignition Timing"
.
Is the inspection result normal?
YES >> GO TO 13.
NO >> Follow the EC-170, "Work Procedure"
.
SEF156I
Spark should be generated.
At idling: Approximately 350 kPa (3.57 kg/cm
2, 51 psi)
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0441 EVAP CONTROL SYSTEMEC-337
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P0441 EVAP CONTROL SYSTEM
DTC LogicINFOID:0000000009462269
DTC DETECTION LOGIC
NOTE:
If DTC P0441 is displayed with other DTC such as P2122, P2123, P2127, P2128 or P2138, first perform
trouble diagnosis for other DTC.
In this evaporative emission (EVAP) control system, pur ge flow occurs during non-closed throttle conditions.
Purge volume is related to air intake volume. Under normal purge conditions (non-closed throttle), the EVAP
canister purge volume control solenoid valve is open to admit purge flow. Purge flow exposes the EVAP con-
trol system pressure sensor to intake manifold vacuum.
Under normal conditions (non-closed throttle), sensor output voltage indicates if pressure drop and purge flow
are adequate. If not, a malfunction is determined.
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.
Will CONSULT be used?
YES >> GO TO 2.
NO >> GO TO 5.
JSBIA0416GB
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P0441 EVAP PURG FLOW/MON
(Evaporative emission sys-
tem incorrect purge flow) EVAP control system does not operate
properly, EVAP control system has a leak
between intake manifold and EVAP control
system pressure sensor. • EVAP canister purge volume control sole-
noid valve stuck closed
• EVAP control system pressure sensor and the circuit
• Loose, disconnected or improper connection of rubber tube
• Blocked rubber tube
• Cracked EVAP canister
• EVAP canister purge volume control sole- noid valve circuit
• Accelerator pedal position sensor
• Blocked purge port
• EVAP canister vent control valve
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0441 EVAP CONTROL SYSTEMEC-339
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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4. Start engine and wait at least 70 seconds.
5. Set voltmeter probes to ECM harness connector terminals as per the following.
*1: Except for California
*2: For California
6. Check EVAP control syst em pressure sensor value at idle speed and note it.
7. Establish and maintain the following conditions for at least 1 minute.
8. Verify that EVAP control system pressure sensor va lue stays 0.1 V less than the value at idle speed (mea-
sured at step 6) for at least 1 second.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to EC-339, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000009462271
1.CHECK EVAP CANISTER
1. Turn ignition switch OFF.
2. Check EVAP canister for cracks.
Is the inspection result normal?
YES-1 >> With CONSULT: GO TO 2.
YES-2 >> Without CONSULT: GO TO 3.
NO >> Replace EVAP canister. Refer to FL-14, "Removal and Installation"
.
2.CHECK PURGE FLOW
WITH CONSULT
1. Disconnect vacuum hose connected to EVAP canister purge volume control solenoid valve at EVAP ser-
vice port.
2. Start engine and let it idle.
3. Select “PURG VOL CONT/V” in “ACTIVE TEST” mode of “ENGINE” using CONSULT.
4. Touch “Qd” and “Qu” on CONSULT screen to adj ust “PURG VOL CONT/V” opening and check vacuum
existence.
Is the inspection result normal?
YES >> GO TO 7.
NO >> GO TO 4.
3.CHECK PURGE FLOW
WITHOUT CONSULT
1. Start engine and warm it up to normal operating temperature.
ECM
Connector +–
Terminal
E10
*1
E31*211 4 1 2 4
Air conditioner switch ON
Headlamp switch ON
Rear window defogger switch ON
Engine speed Approx. 3,000 rpm
Gear position Any position other than P, N or R
PURG VOL CONT/V Vacuum 100% Existed0% Not existed
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-342
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0443 EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE
P0443 EVAP CANISTER PURGE VOLU
ME CONTROL SOLENOID VALVE
DTC LogicINFOID:0000000009462272
DTC DETECTION LOGIC
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.
TESTING CONDITION:
• Perform DTC CONFIRMATION PROCEDURE when the fu el is between 1/4 and 3/4 full, and vehicle is
placed on flat level surface.
• Always perform test at a temperature of 5 to 60 °C (41 to 140 °F).
• Cool the vehicle so that engine coolant temp erature becomes same level as ambient temperature.
Do you have CONSULT
YES >> GO TO 2.
NO >> GO TO 4.
2.PERFORM DTC CONFIRMATION PROCEDURE A
With CONSULT
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode of “ENGINE” using CONSULT.
3. Check that the following condition are met.
FUEL T/TMP SE: 0 - 35 °C (32 - 95 °F)
4. Start engine and wait at least 60 seconds.
5. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-343, "Diagnosis Procedure".
NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE B
With CONSULT
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Select “PURG VOL CN/V P1444” of “EVAPORATI VE SYSTEM” in “DTC WORK SUPPORT” mode of
“ENGINE” using CONSULT.
5. Touch “START”.
6. Start engine and let it idle until “TESTING” on CONS ULT changes to “COMPLETED”. (It will take approxi-
mately 10 seconds.)
If “TESTING” is not displayed afte r 5 minutes, retry from step 2.
7. Touch “SELF-DIAG RESULT”.
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P0443 PURG VOLUME CONT/V
(Evaporative emission system
purge control valve circuit) A
The canister purge flow is detected during
the vehicle is stopped while the engine is
running, even when EVAP canister purge
volume control solenoid valve is com-
pletely closed. • EVAP control system pressure sensor
• EVAP canister purge volume control
solenoid valve
(The valve is stuck open.)
• EVAP canister vent control valve
• EVAP canister
• Hoses (Hoses are connected incorrectly or
clogged.)
B The canister purge flow is detected during
the specified driving conditions, even
when EVAP canister purge volume control
solenoid valve is completely closed.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-354
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0448 EVAP CANISTER VENT CONTROL VALVE
P0448 EVAP CANISTER VENT CONTROL VALVE
DTC LogicINFOID:0000000009462281
DTC DETECTION LOGIC
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.
>> 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 of “ENGINE” using CONSULT.
4. Start engine and let it idle for at least 1 minute.
5. Repeat next procedures three 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. With GST
Follow the procedure “With CONSULT” above.
Is 1st trip DTC detected?
YES >> Proceed to EC-355, "Diagnosis Procedure".
NO >> INSPECTION END
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P0448 VENT CONTROL VALVE
(Evaporative emission system
vent control circuit shorted) 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

EC-356
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0448 EVAP CANISTER VENT CONTROL VALVE
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"
.
Component InspectionINFOID:0000000009462283
1.CHECK EVAP CANISTER VENT CONTROL VALVE-1
1. Turn ignition switch OFF.
2. Remove EVAP canister vent control valve from EVAP canister.
3. Check portion of EVAP canister vent control valve for being rusted.
Is it rusted?
YES >> Replace EVAP canister vent control valve. Refer to FL-
17, "Removal and Installation".
NO >> GO TO 2.
2.CHECK EVAP CANISTER VENT CONTROL VALVE-2
With CONSULT
1. Reconnect harness connectors disconnected.
2. Turn ignition switch ON.
3. Perform “VENT CONTROL/V” in “ACTIVE TEST” mode of “ENGINE” using CONSULT.
4. Check air passage continuity and operation delay time. Make sure new O-ring is installed properly.
Operation takes less than 1 second.
Without CONSULT
Check air passage continuity and operation delay time under the fol-
lowing conditions.
Make sure new O-ring is installed properly.
Operation takes less than 1 second.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace EVAP canister vent control valve. Refer to FL-17, "Removal and Installation"
.
3.CHECK EVAP CANISTER VENT CONTROL VALVE-3
With CONSULT
1. Clean the air passage [portion to ] of EVAP c anister vent control valve using an air blower.
2. Perform “VENT CONTROL/V” in “ACTIVE TEST” mode of “ENGINE” using CONSULT.
JMBIA0168ZZ
Condition
(VENT CONT/V) Air passage continuity between and
ON Not existed
OFF Existed
Condition Air passage continuity between and
12 V direct current supply between
terminals 1 and 2 Not existed
OFF Existed
JMBIA0169ZZ
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-358
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR
P0451 EVAP CONTROL SYSTEM PRESSURE SENSOR
DTC LogicINFOID:0000000009462284
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
NOTE:
Never remove fuel filler cap duri ng 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-359, "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 “E VAP 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 LE AK DIAG” indication.
Which is displayed on CONSULT?
CMPLT >> GO TO 4.
YET >> 1. Perform DTC CONFIRMATION PROCEDURE again. 2. GO TO 1.
4.PERFORM DTC CONFIRMATION PROCEDURE-3
With CONSULT
Check 1st trip DTC.
Is 1st trip DTC detected?
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P0451 EVAP SYS PRES SEN
(Evaporative emission system
pressure sensor/switch range/
performance) ECM detects a sloshing signal from the
EVAP control system pressure sensor • Harness or connectors
(EVAP control system pressure sensor
circuit is shorted.)
• EVAP control system pressure sensor
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0451 EVAP CONTROL SYSTEM PRESSURE SENSOREC-359
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YES >> Proceed to
EC-359, "Diagnosis Procedure".
NO >> INSPECTION END
5.PERFORM DTC CONFIRMATION PROCEDURE-4
With GST
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-359, "Diagnosis Procedure".
NO >> GO TO 6.
6.PERFORM DTC CONFIRMATION PROCEDURE-5
With GST
1. Let it idle for at least 2 hours.
2. Turn ignition switch OFF and wait at least 90 minutes. NOTE:
Never turn ignition swit ch ON during 90 minutes.
3. Turn ignition switch ON.
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-359, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462285
1.CHECK EVAP CONTROL SYS TEM PRESSURE SENSOR CONNECTOR FOR WATER
1. Turn ignition switch OFF.
2. Disconnect EVAP control system pressure sensor harness connector.
3. Check sensor harness connector for water.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace harness connector.
2.CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR POWER SUPPLY
1. Turn ignition switch ON.
2. Check the voltage between EVAP control system pressure sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 3.
3.CHECK EVAP CONTROL SYS TEM PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between EVAP control syst em pressure sensor harness connector and ECM har-
ness connector.
Water should not exist.
+
−Vo l ta g e
(Approx.)
EVAP control system pressure sen-
sor
Connector Terminal B41 3 Ground 5 V
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM