2014 NISSAN TEANA engine

DIAGNOSIS AND REPAIR WORKFLOWEC-673
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12.FINAL CHECK
When DTC was detected in step 2, perform DTC CO NFIRMATION PROCEDURE or Component Function
Check again, and then make sure that the malfunction have been completely repaired.
When symptom was described from the customer, refer to confirmed symptom in step 3 or 4, and make sure
that the symptom is not detected.
Is DTC detected and does symptom remain?
YES-1 >> DTC is detected: GO TO 10.
YES-2 >> Symptom remains: GO TO 6.
NO-1 >> No request for I/M examination from the custom er: Before returning the vehicle to the customer,
always erase unnecessary DTC in ECM and TCM ( With CONSULT: Refer to “How to Read
DTC and 1st Trip DTC” in EC-601, "CONSULT Function"
, Without CONSULT: Refer to “How to
Read Self-diagnostic Results” in EC-598, "On Board Diagnosis Function"
).
NO-2 >> I/M examination, requested from the customer: GO TO 13.
13.PREPARE FOR I/M EXAMINATION
1. Set SRT codes. Refer to EC-689, "Description"
.
2. Erase permanent DTCs. Refer to EC-695, "Description"
.
>> INSPECTION END.
Diagnostic Work SheetINFOID:0000000009462549
DESCRIPTION
There are many operating conditions that lead to the malfunction of
engine components. A good grasp of such conditions can make trou-
bleshooting faster and more accurate.
In general, each customer feels differently about symptoms. It is
important to fully understand the symptoms or conditions for a cus-
tomer complaint.
Utilize a diagnostic worksheet like the WORKSHEET SAMPLE
below in order to organize all the information for troubleshooting.
Some conditions may cause the MIL to illuminate or blink, and DTC
to be detected. Examples:
• Vehicle ran out of fuel, which caused the engine to misfire.
• Fuel filler cap was left off or incorrectly screwed on, allowing fuel to evaporate into the atmosphere.
SEF907L
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BASIC INSPECTIONEC-675
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BASIC INSPECTION
Work ProcedureINFOID:0000000009462550
1.INSPECTION START
1. Check service records for any recent repairs that may indicate a related malfunction, or a current need for scheduled maintenance.
2. Open engine hood and check the following:
- Harness connectors for improper connections
- Wiring harness for improper connections, pinches and cut
- Vacuum hoses for splits, kinks and improper connections
- Hoses and ducts for leakage
- Air cleaner clogging
- Gasket
3. Check that electrical or mechanical loads are not applied.
- Head lamp switch is OFF.
- Air conditioner switch is OFF.
- Rear window defogger switch is OFF.
- Steering wheel is in the straight-ahead position, etc.
4. Start engine and warm it up until engine coolant temperature indicator points to the middle of gauge.
Check that engine stays below 1,000 rpm.
5. Run engine at approximately 2,000 rpm for approximately 2 min- utes under no load.
6. Check that no DTC is displayed with CONSULT or GST.
Are any DTCs detected?
YES >> GO TO 2.
NO >> GO TO 3.
2.REPAIR OR REPLACE
Repair or replace components as necessary according to corresponding Diagnostic Procedure.
>> GO TO 3
3.CHECK TARGET IDLE SPEED
1. Run engine at approximately 2,000 rpm for approximately 2 minutes under no load.
SEF983U
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EC-676
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BASIC INSPECTION
2. Rev engine (2,000 to 3,000 rpm) 2 or 3 times under no load,
then run engine at idle speed for approximately 1 minute.
3. Check idle speed.
For procedure, refer to EC-992, "Work Procedure"
.
For specification, refer to EC-998, "Idle Speed"
.
Is the inspection result normal?
YES >> GO TO 10.
NO >> GO TO 4.
4.PERFORM ACCELERATOR PEDAL RE LEASED POSITION LEARNING
1. Stop engine.
2. Perform EC-681, "Work Procedure"
.
>> GO TO 5.
5.PERFORM THROTTLE VALVE CL OSED POSITION LEARNING
Perform EC-682, "Work Procedure"
.
>> GO TO 6.
6.PERFORM IDLE AIR VOLUME LEARNING
Perform EC-683, "Work Procedure"
.
Is Idle Air Volume Learning carried out successfully?
YES >> GO TO 7.
NO >> Follow the instruction of Idle Air Volume Learning. Then GO TO 4.
7.CHECK IDLE SPEED AGAIN
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
For procedure, refer to EC-992, "Work Procedure"
.
For specification, refer to EC-998, "Idle Speed"
.
Is the inspection result normal?
YES >> GO TO 10.
NO >> GO TO 8.
8.DETECT MALFUNCTIONING PART
Check the Following.
• Check camshaft position sensor (PHASE) and circuit. Refer to EC-820, "Diagnosis Procedure"
.
• Check crankshaft position sensor (POS) and circuit. Refer to EC-817, "Diagnosis Procedure"
.
Is the inspection result normal?
YES >> GO TO 9.
NO >> Repair or replace malfunctioning part. Then GO TO 4.
9.CHECK ECM FUNCTION
1. Substitute with a non-malfunctioning ECM to check EC M function. (ECM may be the cause of the incident,
although this is rare.)
2. Perform initialization of NVIS (NAT S) system and registration of all NVIS (NATS) ignition key IDs. Refer to
SEC-66, "ECM : Work Procedure"
.
>> GO TO 4.
10.CHECK IGNITION TIMING
1. Run engine at idle.
2. Check ignition timing with a timing light.
For procedure, refer to EC-993, "Work Procedure"
.
PBIA8513J
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BASIC INSPECTIONEC-677
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For specification, refer to
EC-998, "Ignition Timing".
Is the inspection result normal?
YES >> GO TO 19.
NO >> GO TO 11.
11 .PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Stop engine.
2. Perform EC-681, "Work Procedure"
.
>> GO TO 12.
12.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform EC-682, "Work Procedure"
.
>> GO TO 13.
13.PERFORM IDLE AIR VOLUME LEARNING
Perform EC-683, "Work Procedure"
.
Is Idle Air Volume Learning carried out successfully?
YES >> GO TO 14.
NO >> Follow the instruction of Idle Air Volume Learning. Then GO TO 4.
14.CHECK IDLE SPEED AGAIN
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
For procedure, refer to EC-992, "Work Procedure"
.
For specification, refer to EC-998, "Idle Speed"
.
Is the inspection result normal?
YES >> GO TO 15.
NO >> GO TO 17.
15.CHECK IGNITION TIMING AGAIN
1. Run engine at idle.
2. Check ignition timing with a timing light. For procedure, refer to EC-993, "Work Procedure"
.
For specification, refer to EC-998, "Ignition Timing"
.
Is the inspection result normal?
YES >> GO TO 19.
NO >> GO TO 16.
16.CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to EM-182, "Exploded View"
.
Is the inspection result normal?
YES >> GO TO 17.
NO >> Repair the timing chain installation. Then GO TO 4.
17.DETECT MALFUNCTIONING PART
Check the following.
• Check camshaft position sensor (PHASE) and circuit. Refer to EC-820, "Diagnosis Procedure"
.
• Check crankshaft position sensor (POS) and circuit. Refer to EC-817, "Diagnosis Procedure"
.
Is the inspection result normal?
YES >> GO TO 18.
NO >> Repair or replace malfunctioning part. Then GO TO 4.
18.CHECK ECM FUNCTION
1. Substitute with a non-malfunctioning ECM to check EC M function. (ECM may be the cause of the incident,
although this is rare.)
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ADDITIONAL SERVICE WHEN REPLACING ECMEC-679
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ADDITIONAL SERVICE WHEN REPLACING ECM
DescriptionINFOID:0000000009462551
When replacing ECM, the following procedure mu
st be performed. (For details, refer to EC-679, "Work Proce-
dure".)
PROGRAMMING OPERATION
NOTE:
After replacing with a blank ECM, programming is required to write ECM information. Be sure to follow the pro-
cedure to perform the programming.
BEFORE REPLACEMENT
When replacing ECM, perform “SAVING DATA FOR RE PLC CPU” in “WORK SUPPORT” of “ENGINE” by
using CONSULT to save current ECM data before replacement.
AFTER REPLACEMENT
After replacing ECM, the following items must be performed:
• Write data after replace CPU
• Accelerator pedal released position learning
• Throttle valve closed position learning
• Idle air volume learning
Work ProcedureINFOID:0000000009462552
1.SAVE ECM DATA
With CONSULT
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Turn ignition switch ON.
4. Select “SAVING DATA FOR REPLC CPU” in “W ORK SUPPORT” mode of “ENGINE” using CONSULT.
5. Follow the instruction of CONSULT display.
NOTE:
• Necessary data in ECM is copied and saved to CONSULT.
• Go to Step 2 regardless of with or without success in saving data.
>> GO TO 2.
2.CHECK ECM PART NUMBER
Check ECM part number to see whether it is blank ECM or not.
NOTE:
• Part number of blank ECM is 23703 - ×××××.
• Check part number when ordering ECM or the one included in the label on the container box.
Is the ECM a blank ECM?
YES >> GO TO 3.
NO >> GO TO 5.
3.SAVE ECM PART NUMBER
Read out the part number from the old ECM and save the number, following the programming instructions.
Refer to CONSULT Operation Manual.
NOTE:
• The ECM part number is saved in CONSULT.
• Even when ECM part number is not saved in CONSULT, go to 4.
>> GO TO 4.
4.PERFORM ECM PROGRAMMING
After replacing ECM, perform the ECM program ming. Refer to CONSULT Operation Manual.
NOTE:
• Refer to EC-997, "Removal and Installation"
for replacement of ECM.
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EC-680
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ADDITIONAL SERVICE WHEN REPLACING ECM
• 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-997, "Removal and Installation"
.
>> GO TO 6.
6.PERFORM INITIALIZATION OF NVIS (NATS) SYST EM AND REGISTRATION OF ALL NVIS (NATS) IGNI-
TION KEY IDS
Perform initialization of NVIS (NATS) system and regist ration of all NVIS (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
Perform VIN registration. Refer to EC-686, "Work Procedure"
.
>> GO TO 10.
10.PERFORM ACCELERATOR PEDAL RE LEASED POSITION LEARNING
Perform accelerator pedal released position learning. Refer to EC-681, "Work Procedure"
.
>> GO TO 11.
11 .PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform throttle valve closed position learning. Refer to EC-682, "Work Procedure"
.
>> GO TO 12.
12.PERFORM IDLE AIR VOLUME LEARNING
Perform idle air volume learning. Refer to EC-683, "Work Procedure"
.
>> END
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EC-682
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THROTTLE VALVE CLOSED POSITION LEARNING
THROTTLE VALVE CLOSED POSITION LEARNING
DescriptionINFOID:0000000009462555
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 electric throttle control actuator or ECM is disconnected or electric throttle control actuator is
cleaned.
Work ProcedureINFOID:0000000009462556
1.START
WITH CONSULT
1. Turn ignition switch ON.
2. Select “CLSD THL POS LEARN” in “WORK SUPPORT” mode.
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:
Coolant temperature is less than 25 °C (77 °F) before engine starts.
2. Warm up the engine. NOTE:
Warm up the engine until “COOLAN TEMP/S” on “DAT A MONITOR” of CONSULT reaches more than
65 °C (149 °F).
3. Turn ignition switch OFF and wait at least 10 seconds.
NOTE:
Check that throttle valve moves during the above 10 seconds by confirming the operating sound.
>> END
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IDLE AIR VOLUME LEARNINGEC-683
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IDLE AIR VOLUME LEARNING
DescriptionINFOID:0000000009462557
Idle Air Volume Learning is a function of ECM to learn
the idle air volume that keeps engine idle speed within
the specific range. It must be performed under the following conditions:
• Each time the electric throttle c ontrol actuator or ECM is replaced.
• Idle speed or ignition timing is out of the specification.
Work ProcedureINFOID:0000000009462558
1.PRECONDITIONING
Check that all of the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are missed for even a moment.
• Battery voltage: More than 12.9 V (At idle)
• Engine coolant temperature: 70 - 100 °C (158 - 212 °F)
• Selector lever position: P or N
• Electric load switch: OFF
(Air conditioner, head lamp, rear window defogger)
On vehicles equipped with daytime light systems, if the parking brake is applied before the engine is
started the head lamp will not illuminate.
• Steering wheel: Neutral (Straight-ahead position)
• Vehicle speed: Stopped
• Transmission: Warmed-up
- With CONSULT: Drive vehicle until “ATF TEMP SEN” in “DATA MONITOR” mode of “CVT” system indicates
less than 0.9 V.
- Without CONSULT: Drive vehicle for 10 minutes.
Will CONSULT be used?
YES >> GO TO 2.
NO >> GO TO 3.
2.PERFORM IDLE AIR VOLUME LEARNING
With CONSULT
1. Perform Accelerator Pedal Released Position Learning. Refer to EC-681, "Work Procedure"
.
2. Perform Throttle Valve Closed Position Learning. Refer to EC-682, "Work Procedure"
.
3. Start engine and warm it up to normal operating temperature.
4. Select “IDLE AIR VOL LEA RN” in “WORK SUPPORT” mode.
5. Touch “START” and wait 20 seconds.
Is
“CMPLT” displayed on CONSULT screen?
YES >> GO TO 4.
NO >> GO TO 5.
3.PERFORM IDLE AIR VOLUME LEARNING
Without CONSULT
NOTE:
• It is better to count the time accurately with a clock.
• It is impossible to switch the di agnostic mode when an accelerator pedal position sensor circuit has
a malfunction.
1. Perform Accelerator Pedal Released Position Learning. Refer to EC-681, "Work Procedure"
.
2. Perform Throttle Valve Closed Position Learning. Refer to EC-682, "Work Procedure"
.
3. Start engine and warm it up to normal operating temperature.
4. Turn ignition switch OFF and wait at least 10 seconds.
5. Confirm that accelerator pedal is fully releas ed, turn ignition switch ON and wait 3 seconds.
6. Repeat the following procedure quickly 5 times within 5 seconds.
- Fully depress the accelerator pedal.
- Fully release the accelerator pedal.
7. Wait 7 seconds, fully depress the accelerator pedal for approx. 20 seconds until the MIL stops blinking
and turns ON.
8. Fully release the accelerator pedal within 3 seconds after the MIL turns ON.
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