2008 NISSAN TEANA cvt

EC-104
< FUNCTION DIAGNOSIS >[VQ25DE, VQ35DE]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
(CONSULT-III also displays the malfunctioning component or system.)
No Tools
The number of blinks of the MI in the Diagnostic Test Mode II (Self-Diagnostic Results) indicates the DTC.
Example: 0340, 0850, 1148, etc.
These DTCs are controlled by NISSAN.
1st trip DTC No. is the same as DTC No.
Output of a DTC indicates a malfunction. However, GST or the Diagnostic Test Mode II do not indi-
cate whether the malfunction is still occurring or has occurred in the past and has returned to nor-
mal. CONSULT-III can identify malfunction status as shown below. Therefore, using CONSULT-III (if
available) is recommended.
DTC or 1st trip DTC of a malfunction is displayed in SELF-DIAGNOSTIC RESULTS mode of CONSULT-III.
Time data indicates how many times the vehicle was driven after the last detection of a DTC.
If the DTC is being detected currently, the time data will be [0].
If a 1st trip DTC is stored in the ECM, the time data will be [1t].
How to Erase DTC and 1st Trip DTC
With CONSULT-III
NOTE:
 If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10
seconds and then turn it ON (engine stopped) again.
 If the DTC is not for CVT related items (see EC-389
), skip step 1.
1. Erase DTC in TCM. Refer to TM-35, "
Diagnosis Description".
2. Select “ENGINE” with CONSULT-III.
3. Select “SELF-DIAG RESULTS”.
4. Touch “ERASE”. (DTC in ECM will be erased.)
WITH GST
NOTE:
 If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10
seconds and then turn it ON (engine stopped) again.
1. Select Service $04 with GST (Generic Scan Tool).
No Tools
NOTE:
 If the ignition switch stays ON after repair work, be sure to turn ignition switch OFF once. Wait at least 10
seconds and then turn it ON (engine stopped) again.
1. Erase DTC in ECM. Refer to How to Erase Diagnostic Test Mode II (Self-diagnostic Results).
If the battery is disconnected, the emission-related diagnostic information will be cleared within 24
hours.
The following data are cleared when the ECM memory is erased.
- Diagnostic trouble codes
- 1st trip diagnostic trouble codes
- Freeze frame data
- 1st trip freeze frame data
- System readiness test (SRT) codes
- Test values
Actual work procedures are explained using a DTC as an example. Be careful so that not only the DTC, but all
of the data listed above, are cleared from the ECM memory during work procedures.
SYSTEM READINESS TEST (SRT) CODE
System Readiness Test (SRT) code is specified in Service $01 of ISO 15031-5.
As part of an enhanced emissions test for Inspection & Maintenance (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 inspection 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:

ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-119
< FUNCTION DIAGNOSIS >[VQ25DE, VQ35DE]
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HO2S2 HTR (B1)
ON/OFF Indicates [ON/OFF] condition of heated oxygen
sensor 2 heater determined by ECM according to
the input signals. HO2S2 HTR (B2)
I/P PULLY SPD rpm Indicates the engine speed computed from the
turbine revolution 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 per-
formed yet.
CMPLT: Idle Air Volume Learning has already
been performed successfully.
ENG OIL TEMP°C or °F The engine oil temperature (determined by the
signal voltage of the engine oil temperature sen-
sor) is displayed.
TRVL AFTER MIL km or mile  Distance traveled while MI is activated.
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. A/F S1 HTR(B2)
AC PRESS SEN V The signal voltage from the refrigerant pressure
sensor is displayed.
VHCL SPEED SE km/h or mph The vehicle speed computed from the vehicle
speed signal sent from combination meter is dis-
played.
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 CANCEL
switch signal.
RESUME/ACC SW ON/OFF Indicates [ON/OFF] condition from RESUME/AC-
CELERATE switch signal.
SET SW ON/OFF Indicates [ON/OFF] condition from SET/COAST
switch signal.
BRAKE SW1 ON/OFF Indicates [ON/OFF] condition from ASCD brake
switch signal or ASCD clutch switch.
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 excessively
low compared with the ASCD set speed, and
ASCD operation is cut off.
LO SPEED CUT NON/CUT Indicates the vehicle cruise condition.
NON: Vehicle speed is maintained at the ASCD
set speed.
CUT: Vehicle speed decreased to excessively
low, and ASCD operation is cut off.
AT O D M O N I TO R O N / O F F Indicates [ON/OFF] condition of CVT O/D ac-
cording to the input signal from the TCM.
AT OD CANCEL ON/OFF Indicates [ON/OFF] condition of CVT O/D cancel
request signal.
CRUISE LAMP ON/OFF Indicates [ON/OFF] condition of CRUISE lamp
determined by the ECM according to the input
signals. Monitored item Unit Description Remarks

EC-124
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
COMPONENT DIAGNOSIS
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
DescriptionINFOID:0000000003856505
The specification (SP) value indicates the tolerance of the value that is displayed in “SPEC” of “DATA MONI-
TOR” mode of CONSULT-III during normal operation of the Engine Control System. When the value in “SPEC”
in “DATA MONITOR” mode is NOT within the SP value, the Engine Control System may have one or more
malfunctions.
The SP value is used to detect malfunctions that may affect the Engine Control System, but will not illuminate
the MI.
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/B2 (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:0000000003856506
1.START
Check 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 (0.983 - 1.043 bar, 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 temperature, drive vehicle until “FLUID TEMP SE” (CVT
fluid temperature sensor signal) indicates more than 60°C (140°F).
 Electrical load: Not applied
- Rear window defogger switch, air conditioner switch, lighting switch are OFF. Steering wheel is straight
ahead.
 Engine speed: Idle
>> GO TO 2.
2.PERFORM “SPEC” OF “DATA MONITOR” MODE
With CONSULT-III
NOTE:
Perform “SPEC” in “DATA MONITOR” mode in maximum scale display.
1. Perform “EC-11, "
BASIC INSPECTION : Special Repair Requirement".
2. Select “B/FUEL SCHDL”, “A/F ALPHA-B1”, “A/F ALPHA-B2” and “MAS A/F SE-B1” in “SPEC” of “DATA
MONITOR” mode with CONSULT-III.
3. Check that monitor items are within the SP value.
Is the measurement value within the SP value?
YES >> INSPECTION END
NO >> Go to EC-125, "
Diagnosis Procedure".

EC-280
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
P1700 CVT CONTROL SYSTEM
P1700 CVT CONTROL SYSTEM
DescriptionINFOID:0000000003856761
This DTC is displayed with other DTC regarding TCM. Perform the trouble diagnosis for corresponding DTC.
Refer to EC-389, "
DTCIndex". When this DTC is detected, the ASCD control is canceled.

EC-388
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
ECM
DTC Inspection Priority Chart
INFOID:0000000003856871
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
P2119 Electric throttle control ac-
tuator(When electric throttle control actuator does not function properly due to the return spring
malfunction:)
ECM controls the electric throttle actuator by regulating the throttle opening around the
idle position. The engine speed will not rise more than 2,000 rpm.
(When throttle valve opening angle in fail-safe mode is not in specified range:)
ECM controls the electric throttle control actuator because of regulating the throttle open-
ing to 20 degrees or less.
(When ECM detects the throttle valve is stuck open:)
While the vehicle is being driver, it slows down gradually by fuel cut. After the vehicle
stops, the engine stalls.
The engine can restart in N or P position, and engine speed will not exceed 1,000 rpm or
more.
P2122
P2123
P2127
P2128
P2138Accelerator pedal position
sensorThe ECM controls the electric throttle control actuator in regulating 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. DTC No. Detected items Engine operating condition in fail-safe mode
Priority Detected items (DTC)
1  U1000 U1001 CAN communication line
 P0102 P0103 Mass air flow sensor
 P0112 P0113 Intake air temperature sensor
 P0117 P0118 Engine coolant temperature sensor
 P0122 P0123 P0222 P0223 P1225 P1226 P2135 Throttle position sensor
 P0327 P0328 P0332 P0333 Knock sensor
 P0335 Crankshaft position sensor (POS)
 P0340 P0345 Camshaft position sensor (PHASE)
 P0500 Vehicle speed sensor
 P0605 P0607 ECM
 P0643 Sensor power supply
 P0705 P0850 Park/Neutral position (PNP) switch
 P1550 P1551 P1552 P1553 P1554 Battery current sensor
 P1610 - P1615 NATS
 P1700 CVT control system
 P2122 P2123 P2127 P2128 P2138 Accelerator pedal position sensor

ECM
EC-389
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
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DTC IndexINFOID:0000000003856872
×:Applicable —: Not applicable
2  P0031 P0032 P0051 P0052 Air fuel ratio (A/F) sensor 1 heater
 P0037 P0038 P0057 P0058 Heated oxygen sensor 2 heater
 P0075 P0081 Intake valve timing control solenoid valve
 P0130 P0131 P0132 P0133 P0150 P0151 P0152 P0153 P2A00 P2A03 Air fuel ratio (A/F) sensor 1
 P0137 P0138 P0139 P0157 P0158 P0159 Heated oxygen sensor 2
 P0444 EVAP canister purge volume control solenoid valve
 P0550 Power steering pressure sensor
 P0603 ECM power supply
 P0710 P0715 P0720 P0740 P0744 P0745 P0746 P0776 P0778 P0840 P0845 P1740 CVT related sensors, solenoid valves
and switches
 P1217 Engine over temperature (OVERHEAT)
 P1720 Vehicle speed sensor
 P1777 P1778 CVT step motor
 P1800 P1801 VIAS control solenoid valve
 P1805 Brake switch
 P2100 P2103 Throttle control motor relay
 P2101 Electric throttle control function
 P2118 Throttle control motor
3  P0011 P0021 Intake valve timing control
 P0171 P0172 P0174 P0175 Fuel injection system function
 P0300 - P0306 Misfire
 P0420 P0430 Three way catalyst function
 P1212 TCS communication line
 P1564 ASCD steering switch
 P1572 ASCD brake switch
 P1574 ASCD vehicle speed sensor
 P1715 Primary speed sensor
 P2119 Electric throttle control actuator Priority Detected items (DTC)
Items
(CONSULT-III screen terms)DTC*
1
SRT code Trip MIReference
page CONSULT-III
GST*
2ECM*3
CAN COMM CIRCUIT U1000
1000*4—1×EC-135
CAN COMM CIRCUIT U1001
1001*4—2 —EC-135
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.P0000 0000——
Flashing*6—
INT/V TIM CONT-B1 P0011 0011 — 2 —EC-136
INT/V TIM CONT-B2 P0021 0021 — 2 —EC-136
A/F SEN1 HTR (B1) P0031 0031 — 2×EC-140
A/F SEN1 HTR (B1) P0032 0032 — 2×EC-140
HO2S2 HTR (B1) P0037 0037 — 2×EC-143
HO2S2 HTR (B1) P0038 0038 — 2×EC-143
A/F SEN1 HTR (B2) P0051 0051 — 2×EC-140
A/F SEN1 HTR (B2) P0052 0052 — 2×EC-140
HO2S2 HTR (B2) P0057 0057 — 2×EC-143
HO2S2 HTR (B2) P0058 0058 — 2×EC-143
INT/V TIM V/CIR-B1 P0075 0075 — 2×EC-146
INT/V TIM V/CIR-B2 P0081 0081 — 2×EC-146
MAF SEN/CIRCUIT-B1 P0102 0102 — 1×EC-149
MAF SEN/CIRCUIT-B1 P0103 0103 — 1×EC-149

ECM
EC-391
< ECU DIAGNOSIS >[VQ25DE, VQ35DE]
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P OPURG VOLUME CONT/V P0444 0444 — 2×EC-231
VEH SPEED SEN/CIRC*5P0500 0500 — 2×EC-234
PW ST P SEN/CIRC P0550 0550 — 2 —EC-236
ECM BACK UP/CIRCUIT P0603 0603 — 2×EC-238
ECM P0605 0605 — 1 or 2× or —EC-240
ECM P0607 0607 — 1×EC-242
SENSOR POWER/CIRC P0643 0643 — 1×EC-243
PNP SW/CIRC P0705 0705 — 2×TM-47
ATF TEMP SEN/CIRC P0710 0710 — 1×TM-50
INPUT SPD SEN/CIRC P0715 0715 — 2×TM-52
VEH SPD SEN/CIR AT*5P0720 0720 — 2×TM-55
TCC SOLENOID/CIRC P0740 0740 — 2×TM-62
A/T TCC S/V FNCTN P0744 0744 — 2×TM-64
L/PRESS SOL/CIRC P0745 0745 — 2×TM-66
PRS CNT SOL/A FCTN P0746 0746 — 1×TM-68
PRS CNT SOL/B FCTN P0776 0776 — 2×TM-70
PRS CNT SOL/B CIRC P0778 0778 — 2×TM-72
TR PRS SENS/A CIRC P0840 0840 — 2×TM-74
TR PRS SENS/B CIRC P0845 0845 — 2×TM-80
P-N POS SW/CIRCUIT P0850 0850 — 2×EC-245
TCS/CIRC P1212 1212 — 2 —EC-249
ENG OVER TEMP P1217 1217 — 1×EC-250
CTP LEARNING-B1 P1225 1225 — 2 —EC-254
CTP LEARNING-B1 P1226 1226 — 2 —EC-256
BAT CURRENT SENSOR P1550 1550 — 2 —EC-258
BAT CURRENT SENSOR P1551 1551 — 2 —EC-261
BAT CURRENT SENSOR P1552 1552 — 2 —EC-261
BAT CURRENT SENSOR P1553 1553 — 2 —EC-264
BAT CURRENT SENSOR P1554 1554 — 2 —EC-267
ASCD SW P1564 1564 — 1 —EC-270
ASCD BRAKE SW P1572 1572 — 1 —EC-273
ASCD VHL SPD SEN P1574 1574 — 1 —EC-278
LOCK MODE P1610 1610 — 2 —SEC-31
ID DISCORD IMM-ECM P1611 1611 — 2 —SEC-32
CHAIN OF ECM-IMMU P1612 1612 — 2 —SEC-34
CHAIN OF IMMU-KEY P1614 1614 — 2 —SEC-35
DIFFERENCE OF KEY P1615 1615 — 2 —SEC-38
CVT C/U FUNCT P1700 1700 — 1 —EC-280
IN PULY SPEED P1715 1715 — 2 —EC-281
V/SP SEN(A/T OUT) P1720 1720 — 2 —EC-283
LU-SLCT SOL/CIRC P1740 1740 — 2×TM-94
STEP MOTR CIRC P1777 1777 — 1×TM-97
Items
(CONSULT-III screen terms)DTC*
1
SRT code Trip MIReference
page CONSULT-III
GST*
2ECM*3

PRECAUTIONS
EC-405
< PRECAUTION >[VQ25DE, VQ35DE]
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000003960684
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the “SRS AIRBAG” and
“SEAT BELT” of this Service Manual.
WARNING:
 To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
 Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIRBAG”.
 Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-
vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.
Precautions For Xenon Headlamp ServiceINFOID:0000000003856878
WARNING:
Comply with the following warnings to prevent any serious accident.
 Disconnect the battery cable (negative terminal) or the power supply fuse before installing, remov-
ing, or touching the xenon headlamp (bulb included). The xenon headlamp contains high-voltage
generated parts.
 Never work with wet hands.
 Check the xenon headlamp ON-OFF status after assembling it to the vehicle. Never turn the xenon
headlamp ON in other conditions. Connect the power supply to the vehicle-side connector.
(Turning it ON outside the lamp case may cause fire or visual impairments.)
 Never touch the bulb glass immediately after turning it OFF. It is extremely hot.
CAUTION:
Comply with the following cautions to prevent any error and malfunction.
 Install the xenon bulb securely. (Insufficient bulb socket installation may melt the bulb, the connec-
tor, the housing, etc. by high-voltage leakage or corona discharge.)
 Never perform HID circuit inspection with a tester.
 Never touch the xenon bulb glass with hands. Never put oil and grease on it.
 Dispose of the used xenon bulb after packing it in thick vinyl without breaking it.
 Never wipe out dirt and contamination with organic solvent (thinner, gasoline, etc.).
Precaution for Procedure without Cowl Top CoverINFOID:0000000003856879
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
On Board Diagnostic (OBD) System of Engine and CVTINFOID:0000000003856880
The ECM has an on board diagnostic system. It will illuminate the malfunction indicator MI to warn the driver of
a malfunction causing emission deterioration.
PIIB3706J