sensor NISSAN LATIO 2011 Service Repair Manual
[x] Cancel search | Manufacturer: NISSAN, Model Year: 2011, Model line: LATIO, Model: NISSAN LATIO 2011Pages: 3787, PDF Size: 78.35 MB
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TCM Power Supply (Memory Back-up)
Transaxle assembly is protected by limiting the engine torque when the mem NISSAN LATIO 2011 Service Repair Manual TROUBLE DIAGNOSISCVT-31
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TCM Power Supply (Memory Back-up)
Transaxle assembly is protected by limiting the engine torque when the mem](/img/5/57357/w960_57357-1085.png)
TROUBLE DIAGNOSISCVT-31
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TCM Power Supply (Memory Back-up)
Transaxle assembly is protected by limiting the engine torque when the memory back-up power supply (for
controlling) from the battery is not supplied to TCM.
Normal statues is restored when turning the ignition switch
OFF to ON after the normal power supply.
How to Perform Trouble Diagnosis for Quick and Accurate RepairINFOID:0000000005928750
INTRODUCTION
The TCM receives a signal from the vehicle speed sensor, transmission range switch and provides shift con-
trol or lock-up control via CVT solenoid valves.
The TCM also communicates with the ECM by means of a signal
sent from sensing elements used wit h the OBD-related parts of the
CVT system for malfunction-diagnos tic purposes. The TCM is capa-
ble of diagnosing malfunctioning parts while the ECM can store mal-
functions in its memory.
Input and output signals must always be correct and stable in the
operation of the CVT system. The CVT system must be in good
operating condition and be free of valve seizure, solenoid valve mal-
function, etc.
It is much more difficult to diagnose an error that occurs intermit-
tently rather than continuously. Most intermittent errors are caused
by poor electric connections or impr oper wiring. In this case, careful
checking of suspected circuits may help prevent the replacement of
good parts.
A visual check only may not find t he cause of the errors. A road test
with CONSULT-III (or GST) or a circuit tester connected should be
performed. Follow the "WORK FLOW" .
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such errors, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A “DIAGNOSTIC WORKSHEET” as
shown on the example (Refer to "Diagnostic Worksheet Chart" )
should be used.
Start your diagnosis by looking for “conventional” errors first. This will
help troubleshoot driveability errors on an electronically controlled
engine vehicle.
Also check related Service bulletins.
WORK FLOW
A good understanding of the malfunction conditions can make troubleshooting faster and more accurate.
In general, each customer feels differently about a malf unction. It is important to fully understand the symp-
toms or conditions for a customer complaint.
Make good use of the two sheets provided, "Information From Customer" and "Diagnostic Worksheet Chart" ,
to perform the best troubleshooting possible.
Work Flow Chart
SAT631IB
SAT632I
SEF234G
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![NISSAN LATIO 2011 Service Repair Manual CVT-36
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CVT Electrical Parts Location
INFOID:0000000005928751
1. O/D OFF indicator lamp 2. Shift position indicator3. Accelerator pedal position senso NISSAN LATIO 2011 Service Repair Manual CVT-36
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TROUBLE DIAGNOSIS
CVT Electrical Parts Location
INFOID:0000000005928751
1. O/D OFF indicator lamp 2. Shift position indicator3. Accelerator pedal position senso](/img/5/57357/w960_57357-1090.png)
CVT-36
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CVT Electrical Parts Location
INFOID:0000000005928751
1. O/D OFF indicator lamp 2. Shift position indicator3. Accelerator pedal position sensor
4. CVT unit harness connector 5. Fuel door release 6. TCM
7. Overdrive control switch
BCIA0033E
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Road TestINFOID:0000000005928754
DESCRIPTION
• The purpose of the test is to determine overall performance NISSAN LATIO 2011 Service Repair Manual TROUBLE DIAGNOSISCVT-41
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Road TestINFOID:0000000005928754
DESCRIPTION
• The purpose of the test is to determine overall performance](/img/5/57357/w960_57357-1095.png)
TROUBLE DIAGNOSISCVT-41
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Road TestINFOID:0000000005928754
DESCRIPTION
• The purpose of the test is to determine overall performance of CVT and analyze causes of problems.
• The road test consists of the following three parts:
1. “Check Before Engine Is Started” CVT-42
.
2. “Check at Idle”CVT-42
.
3. “Cruise Test”CVT-43
.
• Before road test, familiarize yourself with all test procedures and items to check.
• Perform tests on all items until specified symptom is found. Trou-
bleshoot items which check out No Good after road test.
Judgement Possible cause
Idle speed Low for all positions
(“P”, “R”, “N”, “D”, “L”)
Possible causes include malfunctions in the pressure supply system and low oil pump output.
For example
• Oil pump wear
• Pressure regulator valve or plug sticking or spring fatigue
• Oil strainer
⇒ oil pump ⇒ pressure regulator valve passage oil leak
• Engine idle speed too low
Only low for a specific
position Possible causes include an oil pressure leak in a passage or device related to the position after
the pressure is distributed by the manual valve.
High Possible causes include a sensor malfunction or malfunction in the line pressure adjustment
function.
For example
• Accelerator pedal position signal malfunction
• CVT fluid temperature sensor malfunction
• Line pressure solenoid) malfunction (sticking in OFF state, filter clog, cut line)
• Pressure regulator valve or plug sticking
Stall speed Line pressure does
not rise higher than
the line pressure for
idle.
Possible causes include a sensor malfunction or malfunction in the pressure adjustment func-
tion.
For example
• Accelerator pedal position signal malfunction
•TCM malfunction
• Line pressure solenoid) malfunction (shorting, sticking in ON state)
• Pressure regulator valve or plug sticking
The pressure rises,
but does not enter the
standard position. Possible causes include malfunctions in the pressure supply system and malfunction in the pres-
sure adjustment function.
For example
• Accelerator pedal position signal malfunction
• Line pressure solenoid) malfunction (sticking, filter clog)
• Pressure regulator valve or plug sticking
Only low for a specific
position Possible causes include an oil pressure leak in a passage or device related to the position after
the pressure is distributed by the manual valve.
SAT786A
SAT496G
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14 Y ROM assembly ——
15 G ROM assembly ——
18 GR P RANGE SW Selector lever in “P” po
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14 Y ROM assembly ——
15 G ROM assembly ——
18 GR P RANGE SW Selector lever in “P” po
sition. Ba](/img/5/57357/w960_57357-1101.png)
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14 Y ROM assembly ——
15 G ROM assembly ——
18 GR P RANGE SW Selector lever in “P” po
sition. Battery voltage
Other than above position. 0 V
19 R Power supply —
Battery voltage
—0 V
20 W Step motor C Within 2 seconds after ignition switch ON, the time measurement by using the pulse width measurement function (Hi level) of CONSULT-III.*1
*1: A circuit tester cannot be used to test this item. 30.0 msec
21 P Step motor D 10.0 msec
22 BR R RANGE SW Selector lever in “R” position.
Battery voltage
Other than above position. 0 V
25 B Ground Always0 V
26 W N RANGE SW Selector lever in “N” position.
Battery voltage
Other than above position. 0 V
28 Y Power supply
(memory back-
up) Always
Battery voltage
29 R Secondary
speed sensor
When driving [“D” position, 20 km/h (12 MPH)].
570 Hz
30 Y Power supply
(memory back-
up) Always
Battery voltage
31 LG K-LINE ——
37 L Secondary pres-
sure sensor
and “N” position idle
1.0 V
38 V Primary speed
sensor When driving [“L” position, 20 km/h (12 MPH)].
1250 Hz
41* — —— ——
42 LG Sensor ground Always 0 V
43 SB D RANGE SW Selector lever in “D” position.
Battery voltage
Other than above position. 0 V
44 W L RANGE SW Selector lever in “” position.
Battery voltage
Other than above position. 0 V
Te r m i n a l
Wire
color Item
ConditionData (Approx.)
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![NISSAN LATIO 2011 Service Repair Manual CVT-48
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*: This harness is not used.
CONSULT-III Functi
on (TRANSMISSION)INFOID:0000000005928760
CONSULT-III can display each diagnostic item using t NISSAN LATIO 2011 Service Repair Manual CVT-48
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*: This harness is not used.
CONSULT-III Functi
on (TRANSMISSION)INFOID:0000000005928760
CONSULT-III can display each diagnostic item using t](/img/5/57357/w960_57357-1102.png)
CVT-48
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*: This harness is not used.
CONSULT-III Functi
on (TRANSMISSION)INFOID:0000000005928760
CONSULT-III can display each diagnostic item using the diagnostic test modes shown below.
FUNCTION
CONSULT-III REFERENCE VALUE
46 O Sensor power —
5.0 V
— 0 V
47 G CVT fluid tem-
perature sensor When CVT fluid temperature is 20
°C (68 °F) 2.0 V
When CVT fluid temperature is 80 °C (176 °F) 1.0 V
48 B Ground Always 0 V
Te r m i n a l
Wire
color Item
ConditionData (Approx.)
Diagnostic test mode Function
Work support This mode enables a technician to adjust some devices faster and more accurately by following the in-
dications on CONSULT-III.
Self-diagnostic results Self-diagnostic results can be read and erased quickly.
Data monitor Input/Output data in the TCM can be read.
CAN diagnostic support mon-
itor The results of transmit/receive diagnosis of CAN communication can be read.
CALIB data Characteristic information for TCM and CVT assembly can be read.
Function test Performed by CONSULT-III instead of a technician to determine whether each system is “OK” or “NG”.
ECU part number TCM part number can be read.
Item name Condition Display value (Approx.)
VSP SENSOR During driving Approximately matches the speedometer
reading.
ESTM VSP SIG*
PRI SPEED SEN During driving (lock-up ON) Approximately matches the engine speed.
ENG SPEED SIG Engine running Closely matches the tach ometer reading.
SEC HYDR SEN “N” position idle 1.0 V
ATF TEMP SEN When CVT fluid temperature is 20
°C (68 °F). 2.0 V
When CVT fluid temperature is 80 °C (176 °F). 1.0 V
VIGN SEN Ignition switch: ON Battery voltage
VEHICLE SPEED During driving Approximately matches the speedometer
reading.
PRI SPEED During driving (lock-up ON) Approximately matches the engine speed.
SEC SPEED During driving 50 X Approximately matches the speedom-
eter reading.
ENG SPEED Engine running Closely matches the tachom eter reading.
GEAR RATIO During driving 2.56 - 0.43
ACC PEDAL OPEN Released accelerator pedal - Fully depressed
accelerator pedal 0.0/8 - 8.0/8
SEC PRESS “N” position idle 0.8 MPa
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T/M RANGE SEN-
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TROUBLE DIAGNOSISCVT-51
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O PBRAKE SWITCH B When the brake switch does not switch to ON or OFF P0703—CVT-60
T/M RANGE SEN-
SOR A When TCM does not receive the the correct voltage signal
(based on the gear position) from the switch
P0705 P0705
CVT-62
FLUID TEMP
SENSOR ADuring running, the CVT fluid temperature sensor signal volt-
age is excessively high or low
P0710 P0710
CVT-67
INPUT SPEED
SENSOR A• Primary speed sensor signal is not input due to an open cir-
cuit
• An unexpected signal is input when vehicle is being driven P0715 P0715
CVT-72
OUTPUT SPEED
SENSOR• Signal from secondary speed sensor not input due to open
or short circuit
• Unexpected signal input during running P0720 P0720
CVT-76
ENGINE SPEED• TCM does not receive the CAN communication signal from
the ECM
• Engine speed is too low while driving P0725 —
CVT-81
INCORRECT GR
RATIOUnexpected gear ratio detected
P0730—CVT-83
TORQUE CON-
VERTER Normal voltage not applied to solenoid due to open or short
circuit
P0740 P0740
CVT-84
TORQUE CON-
VERTER• CVT cannot perform lock-up even if electrical circuit is good
• TCM detects as irregular by comparing difference value
with slip rotation
• There is big difference engine speed and primary speed when TCM lock-up signal is on P0744 P0744
CVT-89
PC SOLENOID A• Normal voltage not applied to solenoid due to open or short
circuit
• TCM detects as irregular by comparing target value with monitor value P0745 P0745
CVT-91
PC SOLENOID AUnexpected gear ratio was detected in the LOW side due to
excessively low line pressure
P0746 P0746
CVT-96
PC SOLENOID BSecondary pressure is too high or too low compared with the
commanded value while driving
P0776 P0776
CVT-98
PC SOLENOID B• Normal voltage not applied to solenoid due to cut line,
short, or the like
• TCM detects as irregular by comparing target value with
monitor value P0778 P0778
CVT-100
FLUID PRESS
SEN/SW ASignal voltage of the secondary pressure sensor is too high
or too low while driving
P0840 P0840
CVT-105
FLUID PRESS
SEN/SW ASecondary fluid pressure is too high compared with the com-
manded value while driving
P0841
—CVT-109
FLUID PRESS
LOW Secondary fluid pressure is too low compared with the com-
manded value while driving
P0868
—C V T- 111
TCM • When the power supply to the TCM is cut OFF, for example
because the battery is removed, and the self-diagnosis
memory function stops
• This is not a malfunction message (Whenever shutting OFF a power supply to the TCM, this message appears on
the screen) P1701
—CVT-113
TP SENSOR TCM does not receive the proper accelerator pedal position
signals (input by CAN communication) from ECM
P1705
—CVT-117
Items (CONSULT-
III screen terms) Malfunction is detected when... TCM self-di-
agnosis OBD-III (DTC)
Reference page
“TRANSMIS-
SION” with
CONSULT-III MIL indicator
lamp*1, “EN-
GINE” with
CONSULT-III
or GST
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*1: Refer to CVT-28, "Malfunction Indicator Lamp (MIL)" .
*2: Models without ABS does not indicate.
DATA MONITOR MODE
Display Items List
X: NISSAN LATIO 2011 Service Repair Manual CVT-52
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TROUBLE DIAGNOSIS
*1: Refer to CVT-28, "Malfunction Indicator Lamp (MIL)" .
*2: Models without ABS does not indicate.
DATA MONITOR MODE
Display Items List
X:](/img/5/57357/w960_57357-1106.png)
CVT-52
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*1: Refer to CVT-28, "Malfunction Indicator Lamp (MIL)" .
*2: Models without ABS does not indicate.
DATA MONITOR MODE
Display Items List
X: Standard, —: Not applicable, : Option
VEHICLE
SPEED*2• CAN communication with the
ABS actuator and the electric
unit (control unit) is malfunctioning
• There is a great difference between the vehicle speed sig-
nal from the ABS actuator and the electric unit (control
unit), and the vehicle speed sensor signal P1722
—CVT-119
SPEED SENSOR A rotation sensor error is detected because the gear does not
change in accordance with the position of the stepping motor
CAUTION:
One of the “P0720”, the “P0715” or the “P0725“ is dis-
played with the DTC at the same time P1723
—CVT-121
THROTTLE CON-
TROL SIG The electronically controlled throttle for ECM is malfunction-
ing
P1726
—CVT-123
SLCT SOLENOID • Normal voltage not applied to solenoid due to cut line,
short, or the like
• TCM detects as irregular by comparing target value with
monitor value P1740 P1740
CVT-124
LINE PRESS
CONTROLTCM detects the unexpected line pressure
P1745—CVT-128
STEP MOTOR Each coil of the step motor is not energized properly due to
an open or a short P1777 P1777
CVT-129
STEP MOTORThere is a great difference between the number of steps for
the stepping motor and for the actual gear ratio
P1778 P1778
CVT-133
NO DTC IS DE-
TECTED: FUR-
THER TESTING
MAY BE RE-
QUIREDNo NG item has been detected
XX —
Items (CONSULT-
III screen terms)
Malfunction is detected when... TCM self-di-
agnosis OBD-III (DTC)
Reference page
“TRANSMIS-
SION” with
CONSULT-III MIL indicator
lamp*1, “EN-
GINE” with
CONSULT-III
or GST
Monitored item (Unit) Monitor item selection
Remarks
ECU IN-
PUT SIG-
NALS MAIN SIG-
NALS SELEC-
TION
FROM
MENU
VSP SENSOR (km/h or mph) X—
ESTM VSP SIG (km/h or mph) X— Models without ABS does not indicate.
PRI SPEED SEN (rpm) X—
ENG SPEED SIG (rpm) X—
SEC HYDR SEN (V) X—
PRI HYDR SEN (V) X—
ATF TEMP SEN (V) X— CVT fluid temperature sensor
VIGN SEN (V) X—
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P0710 TRANSMISSION FLUI D TEMPERATURE SENSOR A
DescriptionINFOID:000000000592878 NISSAN LATIO 2011 Service Repair Manual P0710 TRANSMISSION FLUID TEMPERATURE SENSOR ACVT-67
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P0710 TRANSMISSION FLUID TEMPERATURE SENSOR ACVT-67
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P0710 TRANSMISSION FLUI D TEMPERATURE SENSOR A
DescriptionINFOID:0000000005928787
• The CVT fluid temperature sensor is included in the control valve assembly.
• The CVT fluid temperature sensor detects the CV T fluid temperature and sends a signal to the TCM.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000005928788
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000005928789
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0710” with CONSULT-III is detected when TCM receives an excessively low or
high voltage from the sensor.
Possible CauseINFOID:0000000005928790
• Harness or connectors (Sensor circuit is open or shorted.)
• CVT fluid temperature sensor
DTC Confirmation ProcedureINFOID:0000000005928791
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to con-
firm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Start engine and maintain the following conditions for at least 14 minutes (Total). VEHICLE SPEED: 10 km/h (6 MPH) or more
RANGE: “D” position
4. If DTC is detected, go to CVT-69, "
Diagnosis Procedure".
WITH GST
Follow the procedure “WITH CONSULT-III”.
Item name Condition Display value (Approx.)
ATF TEMP SEN When CVT fluid temperature is 20
°C (68 °F). 2.0 V
When CVT fluid temperature is 80 °C (176 °F). 1.0 V
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P0710 TRANSMISSION FLUID
TEMPERATURE SENSOR A
Wiring Diagram - CVT - FTS
INFOID:0000000005928792
TCM TERMINALS AND REFERENCE VALUES
Refer to CVT-46, "TCM Term NISSAN LATIO 2011 Service Repair Manual CVT-68
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P0710 TRANSMISSION FLUID
TEMPERATURE SENSOR A
Wiring Diagram - CVT - FTS
INFOID:0000000005928792
TCM TERMINALS AND REFERENCE VALUES
Refer to CVT-46, "TCM Term](/img/5/57357/w960_57357-1122.png)
CVT-68
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P0710 TRANSMISSION FLUID
TEMPERATURE SENSOR A
Wiring Diagram - CVT - FTS
INFOID:0000000005928792
TCM TERMINALS AND REFERENCE VALUES
Refer to CVT-46, "TCM Terminal and Reference Value".
AADWA0018GB
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P0710 TRANSMISSION FLUID TEMPERATURE SENSOR ACVT-69
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Diagnosis ProcedureINFOID:0000000005928793
1. CHECK CVT FLUID TEMP ERATURE SENSOR SIGNAL
With CONSULT-III
1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONITO R” mode for “TRANSMISSION” with CONSULT-III.
3. Read out the value of “ATF TEMP SEN”.
Without CONSULT-III
1. Start engine.
2. Check voltage between TCM connector terminals.
3. Turn ignition switch OFF.
4. Disconnect TCM connector.
5. Check if there is continuity between connector terminal and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
2. CHECK CVT FLUID TEMP ERATURE SENSOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the TCM connector.
3. Check resistance between TCM connector terminals.
OK or NG
OK >> GO TO 5.
NG >> GO TO 3.
3. CHECK CVT FLUID TEMPERATURE SENSOR
1. Turn ignition switch OFF.
2. Disconnect CVT unit harness connector.
Item name Condition Display value
(Approx.)
ATF TEMP SEN When CVT fluid temperature is 20
°C
(68 °F). 2.0 V
When CVT fluid temperature is 80 °C
(176 °F). 1.0 V
Name Connector Terminal
Temperature
°C ( °F) Voltage
(Approx.)
CVT fluid tem-
perature sen-
sor E32
47 - 42 20 (68) 2.0 V
80 (176) 1.0 V
SCIA2027E
Name Connector Terminal Temperature
°C ( °F) Resistance
(Approx.)
CVT fluid tem-
perature sensor E32
47 - 42 20 (68) 6.5 k
Ω
80 (176) 0.9 k Ω
SCIA2510E
Revision: May 2010 2011 Versa