2014 NISSAN TEANA SEC

EC-864
< DTC/CIRCUIT DIAGNOSIS >[VQ35DE]
P0461 FUEL LEVEL SENSOR
P0461 FUEL LEVEL SENSOR
DTC LogicINFOID:0000000009462709
DTC DETECTION LOGIC
NOTE:
• If DTC P0461 is displayed with DTC UXXXX, first perform the tr ouble diagnosis for DTC UXXXX.
• If DTC P0461 is displayed with DTC P0607, first pe rform the trouble diagnosis for DTC P0607. Refer
to EC-884, "DTC Logic"
.
Driving long distances naturally affect fuel gauge level.
This diagnosis detects the fuel gauge malfunction of the gauge not moving even after a long distance has
been driven.
DTC CONFIRMATION PROCEDURE
1.PERFORM COMPONENT FUNCTION CHECK
Perform component function check. Refer to EC-864, "Component Function Check"
.
Use component function check to check th e overall function of the fuel level sensor. During this check, a 1st
trip DTC might not be confirmed.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to EC-865, "Diagnosis Procedure"
.
Component Function CheckINFOID:0000000009462710
1.PRECONDITIONING
WARNING:
When performing the following procedure, always observe the hand ling of the fuel. Refer to FL-6,
"Exploded View".
TESTING CONDITION:
Before starting component function check, preparation of draining fuel and refilling fuel is required.
Will CONSULT be used?
YES >> GO TO 2.
NO >> GO TO 3.
2.PERFORM COMPONENT FUNCTION CHECK
With CONSULT
NOTE:
Start from step 10, if it is possibl e to confirm that the fuel cannot be drained by 30 (7-7/8 US gal, 6-5/
8 Imp gal) in advance.
1. Prepare a fuel container and a spare hose.
2. Release fuel pressure from fuel line, refer to EC-994, "Work Procedure"
.
3. Remove the fuel feed hose on the fuel level sensor unit.
4. Connect a spare fuel hose where the fuel feed hose was removed.
5. Turn ignition switch OFF and wait at least 10 seconds then turn ON.
6. Select “FUEL LEVEL SE” in “D ATA MONITOR” mode with CONSULT.
7. Check “FUEL LEVEL SE” output voltage and note it.
8. Select “FUEL PUMP RELAY” in “ACTIVE TEST” mode with CONSULT.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0461 Fuel level sensor circuit
range/performance The output signal of the fuel level sensor does
not change within the specified range even
though the vehicle has been driven a long dis-
tance. • Harness or connectors
(The CAN communication line is open or
shorted)
• Harness or connectors (The sensor circuit is open or shorted)
• Combination meter
• Fuel level sensor
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-866
< DTC/CIRCUIT DIAGNOSIS >[VQ35DE]
P0462, P0463 FUEL LEVEL SENSOR
P0462, P0463 FUEL LEVEL SENSOR
DTC LogicINFOID:0000000009462712
DTC DETECTION LOGIC
NOTE:
• If DTC P0462 or P0463 is displayed with DTC UXXX X, first perform the trouble diagnosis for DTC
UXXXX.
• If DTC P0462 or P0463 is displayed with DTC P0607, first perform the trouble diagnosis for DTC
P0607.Refer to EC-884, "DTC 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.
TESTING CONDITION:
Before performing the following procedure, confirm th at battery voltage is more than 11 V at ignition
switch ON.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 5 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-866, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462713
1.CHECK COMBINATION METER FUNCTION
Check combination meter function. Refer to MWI-18, "CONSULT Function (METER/M&A)"
.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Proceed to MWI-61, "Diagnosis Procedure"
.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0462 Fuel level sensor circuit
low input An excessively low voltage from the sensor is
sent to ECM. • Harness or connectors
(The CAN communication line is open or
shorted)
• Harness or connectors (The sensor circuit is open or shorted)
• Combination meter
• Fuel level sensor
P0463
Fuel level sensor circuit
high input An excessively high voltage from the sensor is
sent to ECM.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0500 VSSEC-867
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
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P0500 VSS
DescriptionINFOID:0000000009462714
ECM receives vehicle speed signals from two different paths via CAN communication line: One is from the
ABS actuator and electric unit (control unit) via the combination unit and the other is from TCM.
DTC LogicINFOID:0000000009462715
DTC DETECTION LOGIC
NOTE:
• If DTC P0500 is displayed with DTC UXXXX, fi rst perform the trouble diagnosis for DTC UXXXX.
• If DTC P0500 is displayed with DTC P0607, first per form the trouble diagnosis for DTC P0607. Refer to EC-
884, "DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following proce-
dure before conducti ng 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:
Before performing the following procedure, confi rm that battery voltage is 10 V or more at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine.
2. Shift the selector lever to D range and wait at least for 2 seconds.
3. Drive the vehicle at least 5 seconds at 20 km/h (13 MPH) or more. CAUTION:
Always drive vehicle at a safe speed.
NOTE:
This procedure may be conducted with the drive wheels li fted in the shop or by driving the vehicle. If a
road test is expected to be easier, it is unnecessary to lift the vehicle.
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-867, "Diagnosis Procedure"
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462716
1.CHECK DTC WITH TCM
Check DTC with TCM. Refer to TM-43, "CONSULT Function"
.
Is the inspection result normal?
YES >> GO TO 2.
DTC No. Trouble diagnosis
(Trouble diagnosis content) DTC detecting condition Possible cause
P0500 VEH SPEED SEN/CIRC
(Vehicle speed sensor) At 20 km/h (13 MPH), ECM detects the fol-
lowing status continuously for 5 seconds or
more: The difference between a vehicle
speed calculated by a secondary speed sen-
sor transmitted from TCM to ECM via CAN
communication and the vehicle speed indi-
cated on the combination meter exceeds
15km/h (10 MPH). • Harness or connector
(The CAN communication line is open
or shorted.)
• Combination meter
• ABS actuator and elec tric unit (control
unit)
• Wheel sensor
•TCM
• Secondary speed sensor
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-868
< DTC/CIRCUIT DIAGNOSIS >[VQ35DE]
P0500 VSS
NO >> Perform trouble shooting relevant to DTC indicated.
2.CHECK DTC WITH ABS ACTUATOR AN
D ELECTRIC UNIT (CONTROL UNIT)
Check DTC with ABS actuator and elec tric unit (control unit). Refer to BRC-33, "CONSULT Function (ABS)"
.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Perform trouble shooting relevant to DTC indicated.
3.CHECK DTC WITH COMBINATION METER
Check DTC with combination meter. Refer to MWI-18, "CONSULT Function (METER/M&A)"
.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Perform trouble shooting relevant to DTC indicated.
4.CHECK SECONDARY SPEED SENSOR
Check secondary speed sensor. Refer to TM-358, "Diagnosis Procedure"
.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace or replace error-detected parts.
5.CHECK WHEEL SENSOR
Check wheel sensor. Refer to BRC-76, "Diagnosis Procedure"
.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Replace or replace error-detected parts.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0506 ISC SYSTEMEC-869
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
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P0506 ISC SYSTEM
DescriptionINFOID:0000000009462717
The ECM controls the engine idle speed to a specified leve
l through the fine adjustment of the air, which is let
into the intake manifold, by operating the electric thrott le control actuator. The operating of the throttle valve is
varied to allow for optimum control of the engine idli ng speed. The crankshaft position sensor (POS) detects
the actual engine speed and sends a signal to the ECM.
The ECM controls the electric throttle control actuator so that the engine speed coincides with the target value
memorized in the ECM. The target engine speed is t he lowest speed at which the engine can operate steadily.
The optimum value stored in the ECM is determined by taking into consideration various engine conditions,
such as during warming up, deceleration and engine load (air conditioner, power steering and cooling fan
operation, etc.).
DTC LogicINFOID:0000000009462718
DTC DETECTION LOGIC
NOTE:
If DTC P0506 is displayed with ot her DTC, first perform the trouble diagnosis for the other DTC.
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.
If the target idle speed is out of the specified value, perform EC-683, "Work Procedure"
, before con-
ducting DTC CONFIRMATION PROCEDURE.
TESTING CONDITION:
• Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
• Always perform the test at a temperature above −10 °C(14 °F).
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
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. Turn ignition switch OFF and wait at least 10 seconds.
5. Restart engine and run it for at least 1 minute at idle speed.
6. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-869, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462719
1.CHECK INTAKE AIR LEAKAGE
1. Start engine and let it idle.
2. Listen for an intake air leakage after the mass air flow sensor.
Is intake air leakage detected?
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0506 Idle speed control sys-
tem RPM lower than ex-
pected The idle speed is less than the target idle speed
by 100 rpm or more. • Electric throttle control actuator
• Intake air leakage
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0507 ISC SYSTEMEC-871
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
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P0507 ISC SYSTEM
DescriptionINFOID:0000000009462720
The ECM controls the engine idle speed to a specified leve
l through the fine adjustment of the air, which is let
into the intake manifold, by operating the electric thrott le control actuator. The operating of the throttle valve is
varied to allow for optimum control of the engine idli ng speed. The crankshaft position sensor (POS) detects
the actual engine speed and sends a signal to the ECM.
The ECM controls the electric throttle control actuator so that the engine speed coincides with the target value
memorized in the ECM. The target engine speed is t he lowest speed at which the engine can operate steadily.
The optimum value stored in the ECM is determined by taking into consideration various engine conditions,
such as during warming up, deceleration and engine load (air conditioner, power steering and cooling fan
operation, etc.).
DTC LogicINFOID:0000000009462721
DTC DETECTION LOGIC
NOTE:
If DTC P0507 is displayed with ot her DTC, first perform the trouble diagnosis for the other DTC.
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.
If the target idle speed is out of the specified value, perform EC-683, "Work Procedure"
, before con-
ducting DTC Confirmation Procedure.
TESTING CONDITION:
• Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
• Always perform the test at a temperature above −10 °C(14 °F).
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
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. Turn ignition switch OFF and wait at least 10 seconds.
5. Restart engine and run it for at least 1 minute at idle speed.
6. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-871, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462722
1.CHECK PCV HOSE CONNECTION
Confirm that PCV hose is connected correctly.
Is the inspection result normal?
YES >> GO TO 2.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0507 Idle speed control sys-
tem RPM higher than
expected The idle speed is more than the target idle
speed by 200 rpm or more. • Electric throttle control actuator
• Intake air leakage
• PCV system
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P050A, P050E COLD START CONTROLEC-873
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
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P050A, P050E COLD START CONTROL
DescriptionINFOID:0000000009462723
ECM controls ignition timing and engine idle speed when engine is started with pre-warming up condition.
This control promotes the activation of three way ca talyst by heating the catalyst and reduces emissions.
DTC LogicINFOID:0000000009462724
DTC DETECTION LOGIC
NOTE:
If DTC P050A, P050E is displayed with other DTC, first perform the trouble diagnosis for other DTC.
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:
Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE-I
With CONSULT
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Select “DATA MONITOR” mode with CONSULT.
4. Check the indication of “COOLAN TEMP/S”.
With GST
Follow the procedure “With CONSULT” above.
Is the value of
“COOLAN TEMP/S” between 4°C (39°F) and 36°C (97°F)?
YES >> GO TO 3.
NO-1 [If it is below 4 °C (39 °F)]>>Warm up the engine until the value of “COOLAN TEMP/S” reaches 4 °C
(39 °F) or more. Retry from step 1.
NO-2 [If it is above 36 °C (97 °F)]>>Cool engine down to less than 36 °C (97 °F). Retry from step 1.
3.PERFORM DTC CONFIRMATION PROCEDURE-II
With CONSULT
1. Set the select lever in N range.
2. Start the engine and warm up in idle with the value of “COOLAN TEMP/S” between 4°C (39 °F) and 40 °C
(104 °F) for more than 15 seconds.
3. Check 1st trip DTC.
With GST
Follow the procedure “With CONSULT” above.
Is 1st trip DTC detected?
YES >> Proceed to EC-874, "Diagnosis Procedure".
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P050A Cold start idle air control system
performance ECM does not control engine idle speed properly
when engine is started with pre-warming up con-
dition. • Lack of intake air volume
• Fuel injection system
•ECM
P050E Cold start engine exhaust temper-
ature too low The temperature of the catalyst inlet does not
rise to the proper temperature when the engine
is started with pre-warming up condition.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0520 EOP SENSOREC-875
< DTC/CIRCUIT DIAGNOSIS > [VQ35DE]
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P0520 EOP SENSOR
DTC LogicINFOID:0000000009462726
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.CHECK ENGINE OIL LEVEL
1. Turn ignition switch OFF.
2. Check engine oil level. Refer to LU-25, "Inspection"
.
Is inspection result normal?
YES >> GO TO 3.
NO >> Check engine oil leak. Refer to LU-25, "Inspection"
.
3.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and let it idle for at least 5 seconds.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-875, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462727
1.CHECK EOP SENSOR POWER SUPPLY-I
1. Turn ignition switch OFF.
2. Disconnect EOP sensor harness connector.
3. Turn ignition switch ON.
4. Check the voltage between EOP sensor harness connector terminals.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
DTC No. Trouble diagnosis
(Trouble diagnosis content) DTC detecting condition Possible cause
P0520 EOP SENSOR/SWITCH
(EOP sensor circuit) ECM detects the following status continuous-
ly for 5 seconds or more:
• A voltage signal transmitted from the en- gine oil pressure sensor is lower than 0.26
V.
• A voltage signal transmitted from the en- gine oil pressure sensor is higher than 4.9
V. • Harness or connectors
(EOP sensor circuit is open or short-
ed)
• EOP sensor
• Sensor power supply 2 circuit
EOP sensor Vo l ta g e
(Approx.)
Connector +
−
terminal
F87 3 1 5 V
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM