sensor NISSAN TEANA 2014 Service Manual

EC-378
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0461 FUEL LEVEL SENSOR
9. Touch “ON” and drain fuel approximately 30 (7-7/8 US gal, 6-5/8 Imp gal) and stop it.
10. Check “FUEL LEVEL SE” output voltage and note it.
11. Fill fuel into the fuel tank for 30 (7-7/8 US gal, 6-5/8 Imp gal).
12. Check “FUEL LEVEL SE” output voltage and note it.
13. Confirm whether the voltage changes more than 0.03 V during step 7 to 10 and 10 to 12.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to EC-378, "Diagnosis Procedure"
.
3.PERFORM COMPONENT FUNCTION CHECK
Without CONSULT
NOTE:
Start from step 8, 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-182, "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 ON.
6. Drain fuel by 30 (7-7/8 US gal, 6-5/8 Imp gal) from the fuel tank using proper equipment.
7. Confirm that the fuel gauge indication varies.
8. Fill fuel into the fuel tank for 30 (7-7/8 US gal, 6-5/8 Imp gal).
9. Confirm that the fuel gauge indication varies.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Proceed to EC-378, "Diagnosis Procedure"
.
Diagnosis ProcedureINFOID:0000000009462300
1.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 >> Refer to MWI-61, "Component Function Check"
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0462, P0463 FUEL LEVEL SENSOR
EC-379
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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P0462, P0463 FUEL LEVEL SENSOR
DTC LogicINFOID:0000000009462301
DTC DETECTION LOGIC
NOTE:
• If DTC P0462 or P0463 is displayed with DTC UXXXX, 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-404, "DTC Logic"
.
This diagnosis indicates the former, to detect open or short circuit malfunction.
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conduc ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following pr ocedure, confirm that battery voltage is between 11 V and 16 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-379, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462302
1.CHECK COMBINATION METER FUNCTION
Refer to MWI-61, "Component Function Check"
.
Is the inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Proceed to MWI-51, "Work flow"
.
DTC No.CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P0462 FUEL LEVL SEN/CIRC
(Fuel level sensor ″A ″ circuit low) An excessively low voltage from the sen-
sor 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 LEVL SEN/CIRC
(Fuel level sensor ″A ″ circuit high) An excessively high voltage from the sen-
sor is sent to ECM.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-380
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0500 VSS
P0500 VSS
DescriptionINFOID:0000000009462303
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:0000000009462304
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 perform the trouble diagnosis for DTC P0607. Refer to EC-
404, "DTC 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:
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 sec onds 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 lift ed 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-380, "Diagnosis Procedure"
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462305
1.CHECK DTC WITH TCM
Check DTC with TCM. Refer to TM-60, "DTC Index"
.
Is the inspection result normal?
YES >> GO TO 2.
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P0500 VEH SPEED SEN/CIRC
(Vehicle speed sensor ″A ″) 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 output speed sensor
transmitted from TCM to ECM via CAN com-
munication and the vehicle speed indicated
on the combination meter exceeds 15km/h
(10 MPH). • Harness or connector
(CAN communication line is open or
shorted.)
• Combination meter
• ABS actuator and electric unit (control unit)
• Wheel sensor
•TCM
• Output speed sensor
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0500 VSSEC-381
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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NO >> Perform trouble shooting relevant to DTC indicated.
2.CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Check DTC with ABS actuator and elec tric unit (control unit). Refer to BRC-45, "DTC Index"
.
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-27, "DTC Index"
.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Perform trouble shooting relevant to DTC indicated.
4.CHECK INPUT SPEED SENSOR
Check input speed sensor. Refer to TM-115, "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-64, "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

EC-382
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0506 ISC SYSTEM
P0506 ISC SYSTEM
DescriptionINFOID:0000000009462306
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 l oad (air conditioner, power steering and cooling fan
operation, etc.).
DTC LogicINFOID:0000000009462307
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 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.
If the target idle speed is ou t of the specified value, perform EC-179, "Work Procedure"
, before con-
ducting DTC Confirmation Procedure.
TESTING CONDITION:
• Before performing the following procedure, confirm th at 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. Start engine and run it for at least 1 minute at idle speed.
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-382, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462308
1.CHECK INTAKE AIR LEAK
1. Start engine and let it idle.
2. Listen for an intake air leak after the mass air flow sensor.
Is intake air leak detected?
YES >> Discover air leak location and repair.
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P0506 ISC SYSTEM
(Idle air control system RPM lower
than expected) The idle speed is less than the target idle
speed by 100 rpm or more. • Electric throttle control actuator
• Intake air leak
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-384
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0507 ISC SYSTEM
P0507 ISC SYSTEM
DescriptionINFOID:0000000009462309
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 l oad (air conditioner, power steering and cooling fan
operation, etc.).
DTC LogicINFOID:0000000009462310
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 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.
If the target idle speed is ou t of the specified value, perform EC-179, "Work Procedure"
, before con-
ducting DTC Confirmation Procedure.
TESTING CONDITION:
• Before performing the following procedure, confirm th at 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. Start engine and run it for at least 1 minute at idle speed.
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Proceed to EC-384, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462311
1.CHECK PCV HOSE CONNECTION
Confirm that PCV hose is connected correctly.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace error-detected parts.
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P0507 ISC SYSTEM
(Idle air control system 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 leak
• PCV system
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0507 ISC SYSTEMEC-385
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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2.CHECK INTAKE AIR LEAK
1. Start engine and let it idle.
2. Listen for an intake air leak after the mass air flow sensor.
Is intake air leak detected?
YES >> Discover air leak location and repair.
NO >> Replace ECM. Refer to EC-540, "Removal and Installation"
.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-388
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0520 EOP SENSOR
P0520 EOP SENSOR
DTC LogicINFOID:0000000009462315
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
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-388, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000009462316
1.CHECK ENGINE OIL
1. Turn ignition switch OFF.
2. Check engine oil level and pressure. Refer to LU-9, "Inspection"
.
Is inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace error-detected parts.
2.CHECK EOP SENSOR POWER SUPPLY-1
1. Disconnect EOP sensor connector.
2. Turn ignition switch ON.
3. Check the voltage between EOP sensor harness connector terminals.
Inspection result normal?
YES >> GO TO 7.
NO >> GO TO 3.
3.CHECK EOP SENSOR POWER SUPPLY-2
Check the voltage between EOP sensor harness connector and the ground.
DTC No. CONSULT screen terms
(Trouble diagnosis content) Detecting condition Possible cause
P0520 EOP SENSOR/SWITCH
(Engine oil pressure sensor/switch
circuit) Signal voltage from the EOP sensor
remains at more than 5.02 V / less
than 0.3 V for 5 seconds or more. • Harness or connectors
(EOP sensor circuit is open or short-
ed.)
• Engine oil level abnormality
• EOP sensor
• Sensor power supply 2 circuit
EOP sensor Voltag e
(Approx.)
Connector +
−
terminal
F9 3 1 5 V
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

P0520 EOP SENSOREC-389
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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Is inspection result normal?
YES >> GO TO 5.
NO >> GO TO 4.
4.CHECK SENSOR POWER SUPPLY 2 CIRCUIT
Perform EC-525, "Diagnosis Procedure"
.
Is inspection result normal?
YES >> Perform the trouble diagnosis for power supply circuit.
NO >> Repair or replace error-detected parts.
5.CHECK EOP SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between EOP sens or harness connector and ECM harness connector.
*1: Except for California
*2: For California
4. Also check harness for short to power.
Is inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace error-detected parts.
6.CHECK ECM GROUND CIRCUIT
Check the continuity between ECM harness connector and ground.
*1: Except for California
*2: For California
Is inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Repair or replace error-detected parts.
7.CHECK EOP SENSOR SIGNAL CIRCUIT
1. Turn ignition switch OFF.
+
−Vo l ta g e
(Approx.)
EOP sensor
Connector Terminal F9 3 Ground 5 V
+ −
Continuity
EOP sensor ECM
Connector Terminal Connector Terminal
F9 1 F14
*1
F91*238 Existed
+
−Continuity
ECM
Connector Terminal
F14
*1
F91*2
12
Ground Existed
16
F13
*1
F90*258
E10
*1
E31*2128
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EC-390
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0520 EOP SENSOR
2. Disconnect ECM harness connector.
3. Check the continuity between EOP sens or harness connector and ECM harness connector.
*1: Except for California
*2: For California
4. Also check harness for short to ground and to power.
Is inspection result normal?
YES >> GO TO 8.
NO >> Repair or replace error-detected parts.
8.CHECK EOP SENSOR
Refer to EC-390, "Component Inspection"
.
Is inspection result normal?
YES >> Check intermittent incident. Refer to GI-43, "Intermittent Incident".
NO >> Repair or replace error-detected parts.
Component InspectionINFOID:0000000009462317
1.CHECK EOP SENSOR
1. Turn ignition switch OFF.
2. Disconnect EOP sensor harness connector.
3. Check resistance between EOP sensor connector terminals.
Is the inspection result normal?
YES >> INSPECTION END.
NO >> Replace EOP sensor. Refer to EC-21, "Component Parts Location"
.
+−
Continuity
EOP sensor ECM
Connector Terminal Connector Terminal
F9 2 F14
*1
F91*239 Existed
EOP sensor
Condition Resistance (k Ω)
+ −
Te r m i n a l
1 2
None 4 k
Ω – 10 k Ω
32 k Ω – 8 k Ω
2 14 k
Ω – 10 k Ω
31 k Ω – 3 k Ω
3 12 k
Ω – 8 k Ω
21 k Ω – 3 k Ω
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