2014 NISSAN TEANA reset

DIAGNOSIS SYSTEM (ECM)EC-71
< SYSTEM DESCRIPTION > [QR25DE]
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Explanation for Driving Patterns Except for “Misfire ”, “Fuel Injection
System”
Driving Pattern A
Refer to EC-71, "DIAGNOSIS DESCRIPTION : Driving Pattern".
Driving Pattern B
Refer to EC-71, "DIAGNOSIS DESCRIPTION : Driving Pattern".
DIAGNOSIS DESCRIPTION : Driving PatternINFOID:0000000009462115
CAUTION:
Always drive at a safe speed.
DRIVING PATTERN A
Driving pattern A means a trip satisfying the following conditions.
• Engine speed reaches 400 rpm or more.
• Engine coolant temperature rises by 20 °C (36 °F) or more after starting the engine.
• Engine coolant temperature reaches 70 °C (158 °F) or more.
• The ignition switch is turned from ON to OFF.
NOTE:
• When the same malfunction is detected regardless of driv ing conditions, reset the counter of driving pattern
A.
• When the above conditions are satisfied without detecting t he same malfunction, reset the counter of driving
pattern A.
DRIVING PATTERN B
Driving pattern B means a trip satisfying the following conditions.
• Engine speed reaches 400 rpm or more.
• Engine coolant temperature reaches 70 °C (158 °F) or more.
• Vehicle speed of 70 – 120 km/h (44 – 75 MPH) is maintained for 60 seconds or more under the control of closed loop.
• Vehicle speed of 30 – 60 km/h (19 – 37 MPH) is maintained for 10 seconds or more under the control of closed loop.
• Under the closed loop control condition, the following state reaches 12 seconds or more in total: Vehicle
speed of 4 km/h (2 MPH) or less with idling condition.
• The state of driving at 10 km/h (7 MPH) or more reaches 10 minutes or more in total.
• A lapse of 22 minutes or more after engine start.
NOTE:
• Drive the vehicle at a constant velocity.
• When the same malfunction is detected regardless of driv ing conditions, reset the counter of driving pattern
B.
• When the above conditions are satisfied without detecting t he same malfunction, reset the counter of driving
pattern B.
DRIVING PATTERN C
Driving pattern C means operating vehicle as per the following:
The following conditions should be satisfied at the same time:
Engine speed: (Engine speed in the freeze frame data) ±375 rpm
*1: When the same malfunction is de-
tected in two consecutive trips, MIL
will light up. *2: MIL will turn OFF after vehicle is driv-
en 3 times (pattern B) without any
malfunctions. *3: When the same malfunction is de-
tected in two consecutive trips, the
DTC and the freeze frame data will be
stored in ECM.
*4: The DTC and the freeze frame data will not be displayed any longer after
vehicle is driven 40 times (pattern A)
without the same malfunction.
(The DTC and the freeze frame data
still remain in ECM.) *5: When a malfunction is detected for
the first time, the 1st trip DTC and the
1st trip freeze frame data will be
stored in ECM. *6: 1st trip DTC will be cleared after vehi-
cle is driven once (pattern B) without
the same malfunction.
*7: When the same malfunction is de- tected in the 2nd trip, the 1st trip
freeze frame data will be cleared.
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EC-72
< SYSTEM DESCRIPTION >[QR25DE]
DIAGNOSIS SYSTEM (ECM)
Calculated load value: (Calculated load value in the freeze frame data) x (1
±0.1) [%]
Engine coolant temperature condition:
• When the freeze frame data shows lower than 70 °C (158 °F), engine coolant temperature should be lower
than 70 °C (158 °F).
• When the freeze frame data shows higher than or equal to 70 °C (158 °F), engine coolant temperature should
be higher than or equal to 70 °C (158 °F).
NOTE:
• When the same malfunction is detected regardless of t he above vehicle conditions, reset the counter of driv-
ing pattern C.
• When the above conditions are satisfied without detecting t he same malfunction, reset the counter of driving
pattern C.
• The 1st trip DTC will be cleared when C counter is c ounted once without the same malfunction after DTC is
stored in ECM.
DRIVING PATTERN D
Driving pattern D means a trip satisfying the following conditions.
• The state of driving at 40 km/h (25 MPH) reaches 300 seconds or more in total.
• Idle speed lasts 30 seconds or more.
• A lapse of 600 seconds or more after engine start.
NOTE:
• When the same malfunction is detected regardless of driv ing conditions, reset the counter of driving pattern
D.
• When the above conditions are satisfied without detecting t he same malfunction, reset the counter of driving
pattern D.
DIAGNOSIS DESCRIPTION : System Readiness Test (SRT) CodeINFOID:0000000009462116
System Readiness Test (SRT) code is spec ified in Service $01 of SAE J1979/ISO 15031-5.
As part of an enhanced emissions test for Inspection & Ma intenance (I/M), certain states require the status of
SRT be used to indicate whether the ECM has completed self-diagnosis of major emission systems and com-
ponents. Completion must be verified in order for the emissions inspection to proceed.
If a vehicle is rejected for a State emissions inspec tion due to one or more SRT items indicating “INCMP”, use
the information in this Service Manual to set the SRT to “CMPLT”.
In most cases the ECM will automatically complete its self-diagnosis cycle during normal usage, and the SRT
status will indicate “CMPLT” for each application system . Once set as “CMPLT”, the SRT status remains
“CMPLT” until the self-diagnosis memory is erased.
Occasionally, certain portions of the self-diagnostic test may not be completed as a result of the customer's
normal driving pattern; the SRT will indicate “INCMP” for these items.
NOTE:
The SRT will also indicate “INCMP” if the self-diagnosis memory is erased for any reason or if the ECM mem-
ory power supply is interrupted for several hours.
If, during the state emissions inspection, the SRT indica tes “CMPLT” for all test items, the inspector will con-
tinue with the emissions test. However, if the SRT indi cates “INCMP” for one or more of the SRT items the
vehicle is returned to the customer untested.
NOTE:
If permanent DTC is stored or MIL illuminates during t he state emissions inspection, the vehicle is also
returned to the customer untested even though the SRT indi cates “CMPLT” for all test items. therefore, it is
important to check SRT (“CMPLT”), DTC (No DTCs) and permanent DTC (No permanent DTC) before the
inspection.
SRT SET TIMING
SRT is set as “CMPLT” after self-diagnosis has been performed one or more times. Completion of SRT is
done regardless of whether the result is OK or NG. T he set timing is different between OK and NG results and
is shown in the table below.
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EC-82
< SYSTEM DESCRIPTION >[QR25DE]
DIAGNOSIS SYSTEM (ECM)
ALT DUTY SIG On/Off• The control condition of the power gener-
ation voltage variable control (deter-
mined by ECM according to the input
signals) is indicated.
- On: Power generation voltage variable control is active.
- Off: Power generation voltage variable control is inactive.
I/P PULLY SPD rpm • Indicates the engine speed computed
from the input speed sensor signal.
VEHICLE SPEED km/h or mph • The vehicle speed computed from the
vehicle speed signal sent from TCM is
displayed.
IDL A/V LEARN YET/CMPLT • Displays the condition of Idle Air Volume
Learning
- YET: Idle air volume learning has not been performed yet.
- CMPLT: Idle air volume learning has al-
ready been performed successfully.
TRVL AFTER MIL km or mile • Distance traveled while MIL is activated.
ENG OIL TEMP °C or °F • The engine oil temperature (determined
by the signal voltage of the engine oil
temperature sensor) is displayed.
A/F S1 HTR(B1) % • Air fuel ratio (A/F) sensor 1 heater control
value computed by ECM according to the
input signals.
• The current flow to the heater becomes
larger as the value increases.
VHCL SPEED SE km/h or mph • The vehicle speed computed from the
vehicle speed signal sent from combina-
tion meter is displayed.
SET VHCL SPD km/h or mph • The preset vehicle speed is displayed.
MAIN SW On/Off • Indicates [ON/OFF] condition from MAIN
switch signal.
CANCEL SW On/Off • Indicates [ON/OFF] condition from CAN-
CEL switch signal.
RESUME/ACC SW On/Off • Indicates [ON/OFF] condition from RE-
SUME/ACCELERATE switch signal.
SET SW On/Off • Indicates [ON/OFF] condition from SET/
COAST switch signal.
BRAKE SW1 On/Off • Indicates [ON/OFF] condition from brake
pedal position switch signal.
BRAKE SW2 On/Off • Indicates [ON/OFF] condition of stop
lamp switch signal.
VHCL SPD CUT Non/Cut • Indicates the vehicle cruise condition.
- Non: Vehicle speed is maintained at the
ASCD set speed.
- Cut: Vehicle speed decreased to exces- sively low compared with the ASCD set
speed, and ASCD operation is cut off.
Monitored item Unit
Monitor Item
Selection
Description Remarks
ECU
IN-
PUT
SIG-
NALS MAIN
SIG-
NAL S
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EC-90
< ECU DIAGNOSIS INFORMATION >[QR25DE]
ECM
VIAS S/V-1• Engine: After warming up
• Selector lever: P or N
• Air conditioner switch: OFF
•No load When revving engine up to 5,000 rpm
quickly Off
→ On → Off
AIR COND RLY • Engine: After warming up, idle the
engine Air conditioner switch: OFF Off
Air conditioner switch: ON
(Compressor operates) On
FUEL PUMP RLY • For 1 second after turning ignition switch: ON
• Engine running or cranking On
• Except above Off
VENT CONT/V • Ignition switch: ON Off
THRTL RELAY • Ignition switch: ON On
COOLING FAN • Engine: After warming up, idle the
engine
• Air conditioner switch: OFF Engine coolant temperature is 97
°C
(207 °F) or less Off
Engine coolant temperature between
98 °C (208 °F) and 99 °C (210 °F) or more Low
Engine coolant temperature between
100 °C (212 °F) or more Hi
• Engine: After warming up, idle the engine
• Air conditioner switch: ON
• Refrigerant pressure is less than 1,280 kPa (12.80 bar, 13.05 kg/
cm
2, 185.6 psi) Engine coolant temperature is 97
°C
(207 °F) or less Off
Engine coolant temperature between
98 °C (208 °F) and 99 °C (210 °F) or more Mid
Engine coolant temperature between
100 °C (212 °F) or more Hi
HO2S2 HTR (B1) • Engine speed: Below 3,600 rpm after the following conditions are met.
- Engine: After warming up
- Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at
idle for 1 minute under no load On
• Engine speed: Above 3,600 rpm Off
ALT DUTY SIG • Power generation voltage variable control: Operating On
• Power generation voltage variable control: Not operating Off
I/P PULLY SPD • Vehicle speed: More than 20 km/h (12 MPH) Almost the same speed as
the tachometer indication
VEHICLE SPEED • Turn drive wheels and compare CONSULT value with the speedometer indi-
cation. Almost the same speed as
the speedometer indication
IDL A/V LEARN • Engine: running Idle air volume learning has not been per-
formed yet. YET
Idle air volume learning has already been
performed successfully. CMPLT
TRVL AFTER MIL • Ignition switch: ON Vehicle has traveled after MIL has turned
ON. 0 - 65,535 km
(0 - 40,723 miles)
ENG OIL TEMP • Engine: After warming up More than 70 °C (158 °F)
A/F S1 HTR(B1) • Engine: After warming up, idle the engine
(More than 140 seconds after starting engine.) 4 - 100%
VHCL SPEED SE • Turn drive wheels and compare CONSULT value with the speedometer indi-
cation. Almost the same speed as
the speedometer indication
SET VHCL SPD • Engine: Running ASCD: Operating The preset vehicle speed is
displayed
MAIN SW • Ignition switch: ON MAIN switch: Pressed On
MAIN switch: Released Off
Monitor Item Condition Values/Status
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EC-102
< ECU DIAGNOSIS INFORMATION >[QR25DE]
ECM
DTC RELATED ITEM
Description
When a DTC is detected, ECM executes a mode (in the
Fail-safe mode) applicable to the DTC. The fail-safe
mode has the preset traveling control mode (acceler ator angle variation and engine output limit) and device fix
mode.
Fail Safe Pattern
Fail Safe List
× :Applicable —: Not applicable
Detected
items Engine operating condition
in fail-safe mode Remarks Reference page
Malfunction
indicator
lamp circuit Engine speed will not rise
more than 2,500 rpm due
to the fuel cut When there is an open circuit on MIL circuit, the ECM cannot warn the
driver by lighting up MIL when there is malfunction on engine control
system.
Therefore, when electrical controlled throttle and part of ECM related
diagnoses are continuously detected as NG for 5 trips, ECM warns the
driver that engine control system malfunctions and MIL circuit is open
by means of operating fail safe function.
The fail safe function also operates when above diagnoses except MIL
circuit are detected and demands the driver to repair the malfunction. EC-517, "Compo-
nent Function
Check"
Fail safe mode Vehicle behavior
Traveling con-
trol mode Accelerator an-
gle variation
control ECM controls the accelerator pedal depression speed to make it slower than actual speed. This
causes a drop in accelerating performance and encourages the driver to repair malfunction.
NOTE:
ECM does not control the accelerator pedal releasing speed.
Engine output
control ECM reduces the engine output, according to the rise in engine speed. This reduces the vehicle
speed to encourage the driver to repair malfunction.
Device fix mode • This mode fixes the IVT control solenoid valve and the EVT control solenoid valve in the refer-
ence position.
• The intake manifold runner control valve motor is turned OFF (intake manifold runner control
valve opens).
Pattern Fail safe mode
A Traveling control mode Accelerator angle variation control
B Engine output control
C Device fix mode
DTC No. Detected items Vehicle behavior
Pattern Others
ABC
P0011 Intake valve timing control ——×ECM activates the IVT intermediate lock control solenoid
valve to bring the cam sprocket into an intermediate lock con-
dition.
P0014
P0078 Exhaust valve timing control
——× —
P0101
P0102
P0103 Mass air flow sensor circuit
××× —
P0122
P0123
P0222
P0223
P2135 Throttle position sensor
———The ECM controls the electric throttle control actuator in reg-
ulating the throttle opening in order for the idle position to be
within +10 degrees.
The ECM regulates the opening speed of the throttle valve to
be slower than the normal condition.
So, the acceleration will be poor.
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HOW TO ERASE PERMANENT DTCEC-193
< BASIC INSPECTION > [QR25DE]
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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.
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SYSTEMEC-569
< SYSTEM DESCRIPTION > [VQ35DE]
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*1: ECM determines the start signal status
by the signals of engine speed and battery voltage.
*2: This sensor is not used to contro l the engine system under normal conditions.
*3: Automatic air conditioning system
*4: Manual air conditioning system
SYSTEM DESCRIPTION
The amount of fuel injected from the fuel injector is determined by the ECM. The ECM controls the length of
time the valve remains open (injection pulse duration). T he amount of fuel injected is a program value in the
ECM memory. The program value is preset by engi ne operating conditions. These conditions are determined
by input signals (for engine speed and intake air) from t he crankshaft position sensor (POS), camshaft position
sensor (PHASE) and the mass air flow sensor.
VARIOUS FUEL INJECTION INCREASE/DECREASE COMPENSATION
In addition, the amount of fuel injected is compens ated to improve engine performance under various operat-
ing conditions as listed below.

• During warm-up
• When starting the engine
• During acceleration
• Hot-engine operation
• When selector lever position is changed from N to D
• High-load, high-speed operation

• During deceleration
• During high engine speed operation
Sensor Input signal to ECM ECM function Actuator
Crankshaft position sensor (POS) Engine speed
*1
Fuel injection
& mixture ratio
control Fuel injector
Camshaft position sensor (PHASE) Piston position
Mass air flow sensor Amount of intake air
Intake air temperature sensor Intake air temperature
Engine coolant temperature sensor Engine coolant temperature
Air fuel ratio (A/F) sensor 1 Density of oxygen in exhaust gas
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Transmission range switch Gear position
Battery Battery voltage
*1
Knock sensor Engine knocking condition
Heated oxygen sensor 2
*2Density of oxygen in exhaust gas
ABS actuator and electric unit (control unit) • VDC operation signal
• TCS operation signal
CAN communi-
cation
Power steering control module EPS operation signal
Combination meter Vehicle speed signal
A/C auto amp.
*3• A/C ON signal
• Blower fan ON signal
BCM
*4
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SYSTEMEC-585
< SYSTEM DESCRIPTION > [VQ35DE]
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FUEL FILLER CAP WARNING SY
STEM : System DescriptionINFOID:0000000009462525
SYSTEM DIAGRAM
INPUT/OUTPUT SIGNAL CHART
Input
*: This signal is sent to the ECM via the CAN communication line.
Output
*: This signal is sent to the combination meter via the CAN communication line.
SYSTEM DESCRIPTION
The fuel filler cap warning system alerts the driver to the prevention of the fuel filler being left uncapped and
malfunction occurrences after refueling, by turning ON the fuel filler cap warning display on the combination
meter.
ECM judges a refueled state, based on a fuel leve l signal transmitted from the combination meter.
When a very small leak is detected through the EVAP leak diagnosis performed after judging the refueled
state, ECM transmits a fuel filler cap warning display signal (request for display ON) to the combination meter
via CAN communication.
When receiving the signal, the combination meter tu rns ON the fuel filler cap warning display.
CAUTION:
Check fuel filler cap installation condition when the fuel filler cap warning display turns ON.
Reset Operation
The fuel filler cap warning lamp tunes OFF, according to any condition listed below:
• Reset operation is performed by operating the me ter control switch on the combination meter.
- When the reset operation is performed, the combination me ter transmits a fuel filler cap warning reset signal
to ECM via CAN communication. ECM transmits a fuel filler cap warning display signal (request for display
OFF) to the combination meter via CAN communication. When receiving the signal, the combination meter
turns OFF the fuel filler cap warning display.
• EVAP leak diagnosis result is normal.
• Fuel refilled.
• DTC erased by using CONSULT.
NOTE:
Unit/Sensor Input signal to ECM ECM function
EVAP control system pressure sensor Pressure in purge line
Fuel filler cap warning control
Combination meter Fuel level sensor signal
*
Fuel filler cap warning reset signal*
JSBIA1456GB
Unit Output signal Actuator
ECM Fuel filler cap warning display signal
*Combination meter
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