stall speed NISSAN TEANA 2014 Owner's Manual

EC-14
Component Inspection ...........................................976
REFRIGERANT PRESSURE SENSOR ..........979
Component Function Check ................................ ..979
Diagnosis Procedure .............................................979
SENSOR POWER SUPPLY2 CIRCUIT ...........981
Description ........................................................... ..981
Diagnosis Procedure .............................................981
VARIABLE INDUCTION AIR SYSTEM ...........983
Component Function Check ................................ ..983
Diagnosis Procedure .............................................984
SYMPTOM DIAGNOSIS ............................987
ENGINE CONTROL SYSTEM SYMPTOMS .. .987
Symptom Table ................................................... ..987
NORMAL OPERATING CONDITION ..............991
Description ........................................................... ..991
PERIODIC MAINTENANCE ..................... ..992
IDLE SPEED ................................................... .992
Work Procedure ................................................... ..992
IGNITION TIMING .............................................993
Work Procedure ................................................... .993
EVAP LEAK CHECK ........................................994
Work Procedure ................................................... .994
POSITIVE CRANKCASE VENTILATION .........996
Work Procedure ................................................... .996
REMOVAL AND INSTALLATION .............997
ECM ................................................................ ..997
Removal and Installation .......................................997
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... ..........................................
998
SERVICE DATA AND SPECIFICATIONS
(SDS) .............................................................. ..
998
Idle Speed ............................................................ .998
Ignition Timing .......................................................998
Calculated Load Value ..........................................998
Mass Air Flow Sensor ...........................................998
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COMPONENT PARTSEC-25
< SYSTEM DESCRIPTION > [QR25DE]
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ECMINFOID:0000000009462054
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The ECM controls the engine.
Accelerator Pedal Position SensorINFOID:0000000009462055
The accelerator pedal position sensor is installed on the upper end
of the accelerator pedal assembly. The sensor detects the accelera-
tor position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors
are a kind of potentiometers which transform the accelerator pedal
position into output voltage, and emit the voltage signal to the ECM.
In addition, these sensors detect the opening and closing speed of
the accelerator pedal and feed the voltage signals to the ECM. The
ECM judges the current opening angle of the accelerator pedal from
these signals and controls the throttle control motor based on these
signals.
Idle position of the accelerato r pedal is determined by the ECM
receiving the signal from the acce lerator pedal position sensor. The
ECM uses this signal for the engine operation such as fuel cut.
Electric Throttle Control ActuatorINFOID:0000000009462056
Electric throttle control actuator cons ists of throttle body, throttle valve, throttle control motor and throttle posi-
tion sensor.
JPBIA5843ZZ
JPBIA5844ZZ
PBIB1741E
JSBIA0270GB
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COMPONENT PARTSEC-27
< SYSTEM DESCRIPTION > [QR25DE]
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The ECM activates the fuel pump for 1 second after the ignition
switch is turned ON to improve engine start ability. If the ECM
receives a engine speed signal from the camshaft position sensor
(PHASE), it knows that the engine is rotating, and causes the pump
to operate. If the engine speed signal is not received when the igni-
tion switch is ON, the engine stalls. The ECM stops pump operation
and prevents battery discharging, thereby improving safety. The
ECM does not directly drive the fuel pump. It sends the control signal
to the fuel pump control module, which in turn controls the fuel
pump.
FUEL LEVEL SENSOR
The fuel level sensor is mounted in the fuel level sensor unit.
The sensor detects a fuel level in the fuel tank and tr ansmits a signal to the combination meter. The combina-
tion meter sends the fuel level sensor signal to the ECM via the CAN communication line.
It consists of two parts, one is mechanical float and the ot her is variable resistor. Fuel level sensor output volt-
age changes depending on the movement of the fuel mechanical float.
Fuel Tank Temperature SensorINFOID:0000000009462060
The fuel tank temperature sensor is used to detect the fuel tempera-
ture inside the fuel tank. The sensor modifies a voltage signal from
the ECM. The modified signal returns to the ECM as the fuel temper-
ature input. The sensor uses a ther mistor which is sensitive to the
change in temperature. The electrical resistance of the thermistor
decreases as temperature increases.

*: These data are reference values and are measured between ECM terminals.
Mass Air Flow Sensor (With Intake Air Temperature Sensor)INFOID:0000000009462061
MASS AIR FLOW SENSOR
JPBIA5842ZZ
Condition Fuel pump operation
Ignition switch is turned to ON. Operates for 1 second.
Engine running and cranking Operates.
When engine is stopped Stops in 1.5 seconds.
Except as shown above Sto ps .
SEF012P
Fluid temperature
[° C ( °F)] Voltage* (V) Resistance (k
Ω)
20 (68) 3.5 2.3 - 2.7
50 (122) 2.2 0.79 - 0.90
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EC-52
< SYSTEM DESCRIPTION >[QR25DE]
SYSTEM
When starting the engine by cold start, ECM judges the
locked/unlocked state when ignition switch is turned
ON. When judged as locked state (fixed at the intermedi ate phase), the intake valve timing intermediate lock
control solenoid valve is activated. Since oil pre ssure does not act on the lock key even when the engine is
started, the cam phase is fixed at the intermediate phas e and the intake valve timing control is not performed.
When the engine stops without locking the cam phase at the intermediate phase due to an engine stall and the
state is not judged as locked, the intake valve timing intermediate lock control solenoid valve and the intake
valve timing control solenoid valve are activated and the cam phase shifts to the advanced position to be
locked at the intermediate phase. Even when not locked in the intermediate lock phase due to no oil pressure
or low oil pressure, a ratchet structure of the camshaft sprocket (INT) rotor allows the conversion to the inter-
mediate phase in stages by engine vibration.
When engine coolant temperature is more than 60 °C, the intake valve timing is controlled by deactivating the
intake valve timing intermediate lock control so lenoid valve and releasing the intermediate phase lock.
When the engine is started after warming up, ECM releas es the intermediate phase lock immediately after the
engine start and controls the intake valve timing.
EXHAUST VALVE TIMING CONTROL
EXHAUST VALVE TIMING CONT ROL : System DescriptionINFOID:0000000009462097
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
JPBIA4761GB
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS) Engine speed and piston position
Exhaust valve
timing control Exhaust valve timing control
solenoid valve
Camshaft position sensor (PHASE)
Engine oil temperature sensor Engine oil temperature
Exhaust valve timing control position
sensor Exhaust valve timing signal
Combination meter CAN commu-
nication Vehicle speed signal
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DIAGNOSIS SYSTEM (ECM)EC-85
< SYSTEM DESCRIPTION > [QR25DE]
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WORK SUPPORT MODE
Work Item
*: This function is not necessary in the usual service procedure.
ACTIVE TEST MODE
Test Item
Work item Condition Usage
IDLE AIR VOL LEARN • The idle air volume that keeps the engine within the spec- ified range is memorized in ECM. When learning the idle air volume
EVAP SYSTEM CLOSE Close the EVAP canister vent control valve in order to make
EVAP system close under the following conditions.
• Ignition switch ON
• Engine not running
• Ambient temperature is above 0 °C (32 °F).
• No vacuum and no high pressure in EVAP system
• Fuel tank temp is more than 0 °C (32 °F).
• Within 10 minutes after starting “EVAP SYSTEM CLOSE”
• When trying to execute “EVAP SYSTEM CLOSE” under the condition except above, CONSULT will discontinue it
and display appropriate instruction.
NOTE:
When starting engine, CONSULT may display “BAT-
TERY VOLTAGE IS LOW. CHARGE BATTERY”, even in
when using a charged battery. When detecting EVAP vapor leak
in the EVAP system
FUEL PRESSURE RELEASE • Fuel pump will st op by touching “START” during idling.
Crank a few times after engine stalls. When releasing fuel pressure from
fuel line
TARGET IGN TIM ADJ* • Idle condition When adjusting target ignition tim- ing
TARGET IDLE RPM ADJ* • Idle condition When setting target idle speed
VIN REGISTRATION • In this mode , VIN is registered in ECM. When registering VIN in ECM
SELF-LEARNING CONT • The coefficient of self-learning control mixture ratio returns to the original coefficient. When clearing mixture ratio self-
learning value
CLSD THL POS LEARN • Ignition on and engine stopped. When learning the throttle valve
closed position
SAVING DATA FOR REPLC CPU In th is mode, save data that is in ECM. When ECM is replaced.
WRITING DATA FOR REPLC CPU In this mode, write data stored by “SAVE DATA FOR CPU
REPLC” in work support mode to ECM. When ECM is replaced.
Test item Condition Judgment Check item (Remedy)
FUEL INJECTION • Engine: Return to the original
trouble condition
• Change the amount of fuel injec- tion using CONSULT. If trouble symptom disappears, see
CHECK ITEM. • Harness and connectors
• Fuel injector
• Air fuel ratio (A/F) sensor 1
ENG COOLANT
TEMP • Engine: Return to the original
trouble condition
• Change the engine coolant tem- perature using CONSULT. If trouble symptom disappears, see
CHECK ITEM. • Harness and connectors
• Engine coolant temperature
sensor
• Fuel injector
PURG VOL CONT/V • Engine: After warming up, run en-
gine at 1,500 rpm.
• Change the EVAP canister purge volume control solenoid valve
opening percent using CON-
SULT. Engine speed changes according
to the opening percent. • Harness and connectors
• Solenoid valve
FUEL/T TEMP SEN • Change the fuel tank temperature using CONSULT.
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EC-172
< BASIC INSPECTION >[QR25DE]
BASIC INSPECTION
2. Check ignition timing with a timing light.
For procedure, refer to EC-535, "Inspection"
For specification, refer to EC-541, "Ignition Timing".
Is the inspection result normal?
YES >> INSPECTION END.
NO >> GO TO 11.
11 .PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Stop engine.
2. Perform EC-177, "Work Procedure"
.
>> GO TO 12.
12.PERFORM THROTTLE VALVE CL OSED POSITION LEARNING
Perform EC-178, "Work Procedure"
.
>> GO TO 13.
13.PERFORM IDLE AIR VOLUME LEARNING
Perform EC-179, "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 TARGET IDLE SPEED AGAIN
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
For procedure, refer to EC-534, "Inspection"
.
For specification, refer to EC-541, "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-535, "Inspection"
.
For specification, refer to EC-541, "Ignition Timing"
.
Is the inspection result normal?
YES >> INSPECTION END.
NO >> GO TO 16.
16.CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to EM-62, "Removal and Installation"
.
Is the inspection result normal?
YES >> GO TO 17.
NO >> Repair the timing chain installation. Then GO TO 4.
Timing indicator
JPBIA5854ZZ
Timing indicator
JPBIA5854ZZ
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EC-180
< BASIC INSPECTION >[QR25DE]
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
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TROUBLE DIAGNOSIS - SPECIFICATION VALUEEC-199
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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8.CHECK “A/F ALPHA-B1”
1. Start engine.
2. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within
the SP value.
Is the measurement value within the SP value?
YES >> INSPECTION END
NO >> GO TO 9.
9.PERFORM POWER BALANCE TEST
1. Perform “POWER BALANCE ” in “ACTIVE TEST” mode.
2. Make sure that the each cylinder produces a momentary engine speed drop.
Is the inspection result normal?
YES >> GO TO 12.
NO >> GO TO 10.
10.DETECT MALFUNCTIONING PART
Check the following.
1. Ignition coil and its circuit (Refer to EC-511, "Component Function Check"
.)
2. Fuel injector and its circuit (Refer to EC-505, "Component Function Check"
.)
3. Intake air leakage
4. Low compression pressure (Refer to EM-26, "Compression pressure"
.)
Is the inspection result normal?
YES >> Replace fuel injector, refer to EM-41, "Removal and Installation", and then GO TO 11.
NO >> Repair or replace malfunctioning part and then GO TO 11.
11 .CHECK “A/F ALPHA-B1”
1. Start engine.
2. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within
the SP value.
Is the measurement value within the SP value?
YES >> INSPECTION END
NO >> GO TO 12.
12.CHECK A/F SENSOR 1 FUNCTION
Perform all DTC CONFIRMATION PROC EDURE related with A/F sensor 1.
• For DTC P0130, refer to EC-258, "DTC Logic"
.
• For DTC P0131, refer to EC-262, "DTC Logic"
.
• For DTC P0132, refer to EC-265, "DTC Logic"
.
• For DTC P014C, P014D, P15A, P15B refer to EC-289, "DTC Logic"
.
• For DTC P2096, P2097, refer to EC-468, "DTC Logic"
.
Is any DTC detected?
YES >> GO TO 15.
NO >> GO TO 13.
13.CHECK A/F SENSOR 1 CIRCUIT
Perform DIAGNOSTIC PROCEDURE according to corresponding DTC.
>> GO TO 14.
14.CHECK “A/F ALPHA-B1”
1. Start engine.
2. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITO R” mode, and make sure that the each indication is
within the SP value.
Is the measurement value within the SP value?
YES >> INSPECTION END
NO >> GO TO 15.
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P0011 IVT CONTROLEC-209
< DTC/CIRCUIT DIAGNOSIS > [QR25DE]
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P0011 IVT CONTROL
DTC LogicINFOID:0000000009462159
DTC DETECTION LOGIC
NOTE:
If DTC P0011 is displayed with DTC P0075, first perform the trouble diagnosis for EC-221, "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 pr ocedure, confirm that battery voltage is between 11 V and 16 V at
idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE-1
With CONSULT
1. Turn ignition switch ON and select “DATA MONITOR” mode of “ENGINE” using CONSULT.
2. Start engine and warm it up to normal operating temperature.
3. Maintain the following conditions for at least 6 c onsecutive seconds. Hold the accelerator pedal as steady
as possible.
4. Stop vehicle with engine running and let engine idle for 10 seconds.
5. Check 1st trip DTC.
With GST
Follow the procedure “With CONSULT” above.
Is 1st trip DTC detected?
YES >> Proceed to EC-210, "Diagnosis Procedure".
NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE-2
With CONSULT
1. Maintain the following conditions for at least 20 consecutive seconds.
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P0011 INT/V TIM CONT-B1
( ″ A ″ Camshaft position - tim-
ing over-advanced or system
performance bank 1) There is a gap between angle of target
and phase-control angle degree. • Crankshaft position sensor (POS)
• Camshaft position sensor (PHASE)
• Intake valve control solenoid valve
• Accumulation of debris to the signal pick-up
portion of the camshaft
• Timing chain installation
• Foreign matter caught in the oil groove for in-
take valve timing control
ENG SPEED 1,200 - 2,000 rpm
COOLAN TEMP/S More than 60 °C (140 °F)
Selector lever P or N position
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EC-212
< DTC/CIRCUIT DIAGNOSIS >[QR25DE]
P0014 EVT CONTROL
P0014 EVT CONTROL
DTC LogicINFOID:0000000009462162
DTC DETECTION LOGIC
NOTE:
• If DTC P0014 is displayed with DTC P0078, first perform trouble diagnosis for DTC P0078. Refer to
EC-225, "DTC Logic"
.
• If DTC P0014 is displayed with P1078, first pe rform trouble diagnosis for P1078. Refer to EC-413,
"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 between 10 V and 16 V at
idle.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE-1
With CONSULT
1. Turn ignition switch ON and select “DATA MONITOR” mode of “ENGINE” using CONSULT.
2. Start engine and warm it up to the normal operating temperature.
3. Maintain the following conditions for at least 6 c onsecutive seconds. Hold the accelerator pedal as steady
as possible.
4. Let engine idle for 10 seconds.
5. Check 1st trip DTC.
With GST
Follow the procedure “With CONSULT” above.
Is 1st trip DTC detected?
YES >> Proceed to EC-213, "Diagnosis Procedure"
NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE-2
With CONSULT
DTC No. CONSULT screen terms
(Trouble diagnosis content) DTC detecting condition Possible cause
P0014 EXH/V TIM CONT-B1
( ″ B ″ Camshaft position - tim-
ing over-advanced or system
performance bank 1) There is a gap between angle of target and
phase-control angle degree. • Crankshaft position sensor (POS)
• Camshaft position sensor (PHASE)
• Exhaust valve timing control position sen- sor
• Exhaust valve control solenoid valve
• Accumulation of debris to the signal pick- up portion of the camshaft
• Timing chain installation
• Foreign matter caught in the oil groove for exhaust valve timing control
ENG SPEED 1,200 - 2,000 rp m (A constant rotation is maintained.)
COOLAN TEMP/S More than 60 °C (140 °F)
Selector lever P or N position
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