2014 NISSAN TEANA check engine

ADDITIONAL SERVICE WHEN REPLACING ECMEC-175
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• During programming, maintain the following conditions:
- Ignition switch: ON
- Electric load: OFF
- Brake pedal: Not depressed
- Battery voltage: 12 – 13.5 V (Be sure to check the va lue of battery voltage by selecting “BATTERY VOLT” in
“Data monitor” of CONSULT.)
>> GO TO 6.
5.REPLACE ECM
Replace ECM. Refer to EC-540, "Removal and Installation"
.
>> GO TO 6.
6.PERFORM INITIALIZATION OF NATS SYSTEM AND REGISTRATION OF ALL NATS IGNITION KEY IDS
Refer to SEC-66, "ECM : Work Procedure"
.
>> GO TO 7.
7.CHECK ECM DATA STATUS
Check if the data is successfully copied from the EC M at Step 1 (before replacement) and saved in CONSULT.
Is the data saved successfully?
YES >> GO TO 8.
NO >> GO TO 9.
8.WRITE ECM DATA
With CONSULT
1. Select “WRITING DATA FOR REPLC CPU” in “W ORK SUPPORT” mode of “ENGINE” using CONSULT.
2. Follow the instruction of CONSULT display.
NOTE:
The data saved by “SAVING DATA FOR REPLC CPU” is written to ECM.
>> GO TO 10.
9.PERFORM VIN REGISTRATION
Refer to EC-176, "Work Procedure"
.
>> GO TO 10.
10.PERFORM ACCELERATOR PEDAL RE LEASED POSITION LEARNING
Refer to EC-177, "Work Procedure"
.
>> GO TO 11.
11 .PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Refer to EC-178, "Work Procedure"
.
>> GO TO 12.
12.PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-179, "Work Procedure"
.
>> END
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-176
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VIN REGISTRATION
VIN REGISTRATION
DescriptionINFOID:0000000009462132
VIN Registration is an operation to registering VIN in
ECM. It must be performed each time ECM is replaced.
NOTE:
Accurate VIN which is registered in ECM ma y be required for Inspection & Maintenance (I/M).
Work ProcedureINFOID:0000000009462133
1.CHECK VIN
Check the VIN of the vehicle and note it. Refer to GI-23, "Identification Number"
.
>> GO TO 2.
2.PERFORM VIN REGISTRATION
With CONSULT
1. Turn ignition switch ON and engine stopped.
2. Select “VIN REGISTRATION” in “WORK SU PPORT” mode of “ENGINE” using CONSULT.
3. Follow the instruction of CONSULT display.
>> END
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-178
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THROTTLE VALVE CLOSED POSITION LEARNING
THROTTLE VALVE CLOSED POSITION LEARNING
DescriptionINFOID:0000000009462136
Throttle Valve Closed Position Learning is a function of ECM to learn the fully closed position of the throttle
valve by monitoring the throttle position sensor output signal. It must be performed each time the harness con-
nector of the electric throttle control actuator or ECM is disconnected or elec tric throttle control actuator inside
is cleaned.
Work ProcedureINFOID:0000000009462137
1.START
With CONSULT
1. Turn ignition switch ON.
2. Select “CLSD THL POS LEARN” in “WORK SUPPORT” mode of “ENGINE” using CONSULT.
3. Follow the instructions on the CONSULT display.
4. Turn ignition switch OFF and wait at least 10 seconds.
Check that throttle valve moves during the above 10 seconds by confirming the operating sound.
Without CONSULT
1. Start the engine.
NOTE:
Engine coolant temperature is 25 °C (77 °F) or less before engine starts.
2. Warm up the engine. NOTE:
Raise engine coolant temperature until it reaches 65 °C (149 °F) or more.
3. Turn ignition switch OFF and wait at least 10 seconds. Check that throttle valve moves during the above 10 seconds by confirming the operating sound.
>> END
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-180
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IDLE AIR VOLUME LEARNING
8. Fully release the accelerator pedal within 3 seconds after the MIL turned ON.
9. Start engine and let it idle.
10. Wait 20 seconds.
>> GO TO 4
4.CHECK IDLE SPEED AND IGNITION TIMING
Rev up the engine two or three times and make sure that idle speed and ignition timing are within the specifi-
cations. For specification, refer to EC-541, "Idle Speed"
and EC-541, "Ignition Timing".
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following
• Check that throttle valve is fully closed.
• Check PCV valve operation.
• Check that downstream of throttle valve is free from air leakage.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace malfunctioning part.
6.DETECT MALFUNCTIONING PART
Engine component parts and their installation condition are questionable. Check and eliminate the cause of
the incident.
It is useful to perform “TROUBLE DIAGNOSIS - SPECIFICATION VALUE”. Refer to EC-195, "Description"
.
If any of the following conditions occur after the engi ne has started, eliminate the cause of the incident and
perform Idle Air Volume Learning all over again:
• Engine stalls.
• Erroneous idle.
>> INSPECTION END
SEC897C
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-182
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FUEL PRESSURE
FUEL PRESSURE
Work ProcedureINFOID:0000000009462142
FUEL PRESSURE RELEASE
1.FUEL PRESSURE RELEASE
With CONSULT
1. Turn ignition switch ON.
2. Perform “FUEL PRESSURE RELEA SE” in “WORK SUPPORT” mode of “ENGINE” using CONSULT.
3. Start engine.
4. After engine stalls, crank it two or three times to release all fuel pressure.
5. Turn ignition switch OFF.
Without CONSULT
1. Remove fuel pump fuse located in IPDM E/R. For the fuse number, refer to EC-117, "Wiring Diagram"
. For
the fuse arrangement, refer to PG-72, "Fuse, Connector and Terminal Arrangement"
.
2. Start engine.
3. After engine stalls, crank it two or three times to release all fuel pressure.
4. Turn ignition switch OFF.
5. Reinstall fuel pump fuse after servicing fuel system.
>> END
FUEL PRESSURE CHECK
CAUTION:
Before disconnecting fuel line, release fuel pr essure from fuel line to eliminate danger.
NOTE:
• Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel
pressure cannot be completely released because th is models do not have fuel return system.
• Use Fuel Pressure Gauge Kit [SST: (J-44321)] to check fuel pressure.
1.FUEL PRESSURE CHECK
1. Release fuel pressure to zero.
2. Connect fuel tube adapter [SST:KV10120000] (B) to quick con-
nector.
3. Turn ignition switch ON and check for fuel leakage.
4. Start engine and check for fuel leakage.
5. Read the indication of fuel pressure gauge.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 2.
2.CHECK FUEL HOSES AND FUEL TUBES
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 error-detected parts.
A : Fuel pressure gauge
C : Fuel feed hose
: Vehicle front
At idling : Approximately 350 kPa (3.57 kg/cm2, 51 psi)
ALBIA0811ZZ
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

EC-186
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HOW TO SET SRT CODE
*: Normal conditions- Sea level
- Flat road
- Ambient air temperature: 20 – 30 °C (68 – 86 °F)
NOTE:
Diagnosis is performed as quickly as possible under normal conditions. However, under other conditions,
diagnosis may also be performed. [For example: ambient air temperature other than 20 – 30°C (68 – 86 °F)]
Work ProcedureINFOID:0000000009462145
1.CHECK DTC
Check DTC.
Is any DTC detected?
YES >> Repair malfunction(s) and erase DTC. Refer to EC-105, "DTC Index".
NO >> GO TO 2.
2.CHECK SRT STATUS
With CONSULT
Select “SRT STATUS” in “DTC & SRT CONFIRMATION” mode with CONSULT.
Without CONSULT
Perform “SRT status” mode with EC-74, "On Board Diagnosis Function"
.
With GST
Select Service $01 with GST.
Is SRT code(s) set?
YES >> GO TO 11.
NO-1 >> With CONSULT: GO TO 3.
NO-2 >> Without CONSULT: GO TO 4.
3.DTC CONFIRMATION PROCEDURE
1. Select “SRT WORK SUPPORT” in “DTC & SRT CONFIRMATION” mode with CONSULT.
2. For SRT(s) that is not set, perform the corre sponding “DTC CONFIRMATION PROCEDURE” according to
the “Performance Priority” in the “SRT ITEM” table. Refer to EC-183, "Description"
.
3. Check DTC.
Is any DTC detected?
YES >> Repair malfunction(s) and erase DTC. Refer to EC-105, "DTC Index".
NO >> GO TO 10.
4.PERFORM ROAD TEST
• Check the “Performance Priority” in the “SRT ITEM” table. Refer to EC-183, "Description"
.
• Perform the most efficient SRT set driving pattern to set the SRT properly. Refer to EC-184, "SRT Set Driv-
ing Pattern".
In order to set all SRTs, the SRT set driving pattern must be performed at least once.
>> GO TO 5.
5.PATTERN 1
1. Check the vehicle condition;
- Engine coolant temperature is −10 to 35 °C (14 to 95 °F).
- Fuel tank temperature is more than 0 °C (32 °F).
2. Start the engine.
3. Keep engine idling until the engine coolant temperature is greater than 70 °C (158 °F)
NOTE:
ECM terminal voltage is follows;
• Engine coolant temperature
- −10 to 35 °C (14 to 95 °F): 3.0 – 4.3 V
-70 °(158 °F): Less than 4.1 V
• Fuel tank temperature: Less than 1.4 V
Refer to EC-88, "Reference Value"
.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

HOW TO ERASE PERMANENT DTCEC-193
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4. Turn ignition switch ON.
5. Select Service $0A with GST.
Is any permanent DTC detected?
YES >> GO TO 3.
NO >> END
3.DRIVE DRIVING PATTERN B
CAUTION:
• Always drive at a safe speed.
• Never erase self-diagnosis results.
• If self-diagnosis results are erased during the trip of driving pattern B or D, the counter of driving
pattern B and D is reset.
With CONSULT
1. Start engine and warm it up to normal operating temperature.
2. Use “PERMANENT DTC WORK SUPPORT” mode with CONS ULT to drive the vehicle according to driv-
ing pattern B. Refer to EC-77, "CONSULT Function"
, EC-71, "DIAGNOSIS DESCRIPTION : Driving Pat-
tern".
With GST
1. Start engine and warm it up to normal operating temperature.
2. Drive the vehicle according to driving pattern B. Refer to EC-71, "DIAGNOSIS DESCRIPTION : Driving
Pattern".
>> GO TO 4.
4.CHECK PERMANENT DTC
With CONSULT
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.
4. Turn ignition switch ON.
5. Select “PERMANENT DTC STATUS” mode with CONSULT.
With GST
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.
4. Turn ignition switch ON.
5. Select Service $0A with GST.
Is any permanent DTC detected?
YES >> GO TO 5.
NO >> END
5.DRIVE DRIVING PATTERN D
CAUTION:
• Always drive at a safe speed.
• Never erase self-diagnosis results.
• If self-diagnosis results are erased during the trip of driving pattern B or D, the counter of driving
pattern B and D is reset.
Drive the vehicle according to driving pattern D. Refer to EC-71, "DIAGNOSIS DESCRIPTION : Driving Pat-
tern".
>> GO TO 6.
6.CHECK PERMANENT DTC
With CONSULT
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.
4. Turn ignition switch ON.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM

TROUBLE DIAGNOSIS - SPECIFICATION VALUEEC-195
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DTC/CIRCUIT DIAGNOSIS
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
DescriptionINFOID:0000000009462149
The specification (SP) value indicates the tolerance of
the value that is displayed in “SPEC” of “DATA MONI-
TOR” mode of CONSULT during normal operation of the Engine Control System. When the value in “SPEC” of
“DATA MONITOR” mode is within the SP value, the E ngine Control System is confirmed OK. When the value
in “SPEC” of “DATA MONITOR” mode is NOT within t he SP value, the Engine Control System may have one
or more malfunctions.
The SP value is used to detect malfunctions that may af fect the Engine Control System, but will not light the
MIL.
The SP value will be displayed for the following three items:
• B/FUEL SCHDL (The fuel injection pulse width programmed into ECM prior to any learned on board correc- tion)
• A/F ALPHA-B1 (The mean value of air-fuel ratio feedback correction factor per cycle)
• MAS A/F SE-B1 (The signal voltage of the mass air flow sensor)
Component Function CheckINFOID:0000000009462150
1.START
Make sure that all of the following conditions are satisfied.
• Vehicle driven distance: More than 5,000 km (3,107 miles)
• Barometric pressure: 98.3 - 104.3 kPa (1.003 - 1.064 kg/cm
2, 14.25 - 15.12 psi)
• Atmospheric temperature: 20 - 30 °C (68 - 86 °F)
• Engine coolant temperature: 75 - 95 °C (167 - 203 °F)
• Transmission: Warmed-up
- After the engine is warmed up to normal operating tem perature, drive vehicle until “ATF TEMP SEN” (CVT
fluid temperature sensor signal) indicates more than 60 °C (140 °F).
• Electrical load: Not applied*
• Engine speed: Idle
*: Rear window defogger switch, air conditioner switch, lighting switch are OFF. Steering wheel is straight
ahead.
>> GO TO 2.
2.PERFORM “SPEC” OF “DATA MONITOR” MODE
With CONSULT
NOTE:
Perform “SPEC” in “DATA MONITOR” mode in maximum scale display.
1. Perform EC-170, "Work Procedure"
.
2. Select “B/FUEL SCHDL”, “A/F ALPHA-B1” and “MAS A/F SE-B1” in “SPEC” of “DATA MONITOR” mode
with CONSULT.
3. Make sure that monitor items are within the SP value.
Is the inspection result normal?
YES >> END
NO >> Proceed to EC-196, "Diagnosis Procedure"
.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM