2010 NISSAN LATIO oil temperature

CVT-40
< SERVICE INFORMATION >[RE0F08B]
TROUBLE DIAGNOSIS
The CVT fluid temperature rises in the range of 50 - 80
°C (122 - 176° F) during 10 minutes of driving.
3. After warming up CVT, remove the oil pressure detection plug and install the oil pressure gauge [special service tool: - (OTC3492)].
CAUTION:
When using the oil pressure gauge, be sure to u se the O-ring attached to the oil pressure detec-
tion plug.
4. Securely engage the parking brake so that the tires do not turn.
5. Start the engine, and then measure the line pressure at both idle and the stall speed.
CAUTION:
• Keep the brake pedal pressed all the way down duringmeasurement.
• When measuring the line pressure at the stall speed, refer
to "STALL TEST" .
6. After the measurements are complete, install the oil pressure detection plug and tighten to the specified torque below.
CAUTION:
• Do not reuse O-ring.
• Apply CVT fluid to O-ring.
Line Pressure
Judgement of Line Pressure Test
SAT513G
: 7.5 N·m (0.77 kg-m, 66 in-lb)SAT493G
Engine speed Line pressure kPa (kg/cm
2 , psi)
“R”, “D” and “L” positions
At idle CVT-176, "
Line Pressure"At stall
Revision: January 20102010 Versa

TROUBLE DIAGNOSISCVT-41
< SERVICE INFORMATION > [RE0F08B]
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Road TestINFOID:0000000005397791
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
Revision: January 20102010 Versa

TROUBLE DIAGNOSISCVT-43
< SERVICE INFORMATION > [RE0F08B]
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3.CHECK “P” POSITION FUNCTION
1. Move selector lever to “P” position.
2. Turn ignition switch OFF.
3. Release parking brake.
4. Push vehicle forward or backward.
5. Apply parking brake.
Does vehicle move when it is pushed forward or backward?
YES >> Mark the box CVT-145, "In "P" Position, Vehicle Moves Forward or Backward When Pushed" on
the CVT-31, "
How to Perform Trouble Diagnosis for Quick and Accurate Repair" . Continue “Road
Te s t ” .
NO >> GO TO 4.
4.CHECK “N” POSITION FUNCTION
1. Start engine.
2. Move selector lever to “N” position.
3. Release parking brake.
Does vehicle move forward or backward?
YES >> Mark the box CVT-146, "In "N" Position, Vehicle Moves" on the CVT-31, "How to Perform Trouble
Diagnosis for Quick and Accurate Repair" . Continue “Road Test”.
NO >> GO TO 5.
5.CHECK SHIFT SHOCK
1. Apply foot brake.
2. Move selector lever to “R” position.
Is there large shock when changing from
“N” to “R” position?
YES >> Mark the box CVT-146, "Large Shock "N" → "R" Position" on the CVT-31, "How to Perform Trou-
ble Diagnosis for Quick and Accurate Repair" . Continue “Road Test”.
NO >> GO TO 6.
6.CHECK “R” POSITION FUNCTION
Release foot brake for several seconds.
Does vehicle creep backward w hen foot brake is released?
YES >> GO TO 7.
NO >> Mark the box CVT-147, "
Vehicle Does Not Creep Backward in "R" Position" on the CVT-31, "How
to Perform Trouble Diagnosis for Quick and Accurate Repair" . Continue “Road Test”.
7.CHECK “D”, “L” POSITIONS FUNCTION
Move selector lever to “D” and “L” positions and check if vehicle creeps forward.
Does vehicle creep forward in all positions?
YES >> Go to CVT-43, "Cruise Test" .
NO >> Stop “Road Test”. Mark the box on the CVT-31, "
How to Perform Trouble Diagnosis for Quick and
Accurate Repair" . Go to CVT-148, "Vehicle Does Not Creep Forward in "D" or "L" Position" .
Cruise TestINFOID:0000000005397794
1.CHECK VEHICLE SPEED WHEN SHIFTING GEARS — PART 1
1. Drive vehicle for approximately 10 minutes to warm engine oil and CVT fluid up to operating temperature.
2. Park vehicle on flat surface.
3. Move selector lever to “P” position.
4. Start engine.
5. Move selector lever to “L” position. CVT fluid operating temperature: 50 - 80
°C (122 - 176° F)
Revision: January 20102010 Versa

CVT-52
< SERVICE INFORMATION >[RE0F08B]
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: 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—
Revision: January 20102010 Versa

TROUBLE DIAGNOSISCVT-53
< SERVICE INFORMATION > [RE0F08B]
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VEHICLE SPEED (km/h or mph) —X Vehicle speed recognized by the TCM.
PRI SPEED (rpm) —X Primary pulley speed.
SEC SPEED (rpm) —— Secondary pulley speed.
ENG SPEED (rpm) —X
SLIP REV (rpm) —X Difference between engine speed and primary
pulley speed
GEAR RATIO —X
G SPEED (G) ——
ACC PEDAL OPEN (0.0/8) XX Degree of opening for accelerator recognized by
the TCM
For fail-safe operation, the specific value used for
control is displayed.
TRQ RTO ——
SEC PRESS (MPa) —X
PRI PRESS (MPa) —X
ATFTEMP COUNT —X Means CVT fluid temperature. Actual oil temper-
ature (
°C) cannot be checked unless a numeric
value is converted. Refer to CVT-11
.
DSR REV (rpm) — —
DGEAR RATIO — —
DSTM STEP (step) — —
STM STEP (step) — X
LU PRS (MPa) — —
LINE PRS (MPa) — —
TGT SEC PRESS (MPa) — —
ISOLT1 (A) — X Torque converter clutch solenoid valve output
current
ISOLT2 (A) — X Line pressure solenoid valve output current
ISOLT3 (A) — X Secondary pressure solenoid valve output cur-
rent
SOLMON1 (A) X X Torque converter clutch solenoid valve monitor
current
SOLMON2 (A) X X Line pressure solenoid valve monitor current
SOLMON3 (A) X X Secondary pressure solenoid valve monitor cur-
rent
P POSITION SW (on/off) X —
R POSITION SW (on/off) X —
N POSITION SW (on/off) X —
D POSITION SW (on/off) X —
L POSITION SW (on/off) X — Monitored item (Unit)
Monitor item selection
Remarks
ECU IN-
PUT SIG- NALS MAIN SIG-
NALS SELEC-
TION
FROM
MENU
Revision: January 20102010 Versa

CVT-128
< SERVICE INFORMATION >[RE0F08B]
P1745 LINE PRESSURE CONTROL
P1745 LINE PRESSURE CONTROL
DescriptionINFOID:0000000005397955
The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in
response to a signal sent from the TCM.
On Board Diagn
osis LogicINFOID:0000000005397956
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1745” with CONSULT-III is detected when TCM detects the unexpected line pres-
sure.
Possible CauseINFOID:0000000005397957
TCM
DTC Confirmation ProcedureINFOID:0000000005397958
NOTE:
If “DTC Confirmation Procedure” has been previously performed, alw ays 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 and select “DATA MONI TOR” mode for “TRANSMISSION” with CONSULT-III.
2. Make sure that output voltage of CVT fluid temperature sensor is within the range below.
ATF TEMP SEN: 1.0 - 2.0 V
If out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to
increase the voltage (cool down the fluid)
3. If DTC is detected, go to CVT-128, "
Diagnosis Procedure" .
Diagnosis ProcedureINFOID:0000000005397959
1.CHECK DTC
1. Turn ignition switch ON. (Do not start engine.)
2. Select “SELF-DIAG RESULTS” mode fo r “TRANSMISSION” with CONSULT-III.
3. Erase self-diagnostic results. Refer to CVT-27, "
OBD-II Diagnostic Trouble Code (DTC)".
4. Turn ignition switch OFF, and wait for 10 seconds or more.
5. Start engine.
6. Confirm self-diagnostic results again. Refer to CVT-48, "
CONSULT-III Function (TRANSMISSION)" .
Is the
“P1745” displayed?
YES >> Replace TCM. Refer to CVT-159, "Removal and Installation" .
NO >> INSPECTION END
Revision: January 20102010 Versa

EC-30
< FUNCTION DIAGNOSIS >[HR16DE]
ENGINE CONTROL SYSTEM
System Description
INFOID:0000000005398249
ECM performs various controls such as fuel injection control and ignition timing control.
Component Parts LocationINFOID:0000000005398250
1. Ignition coil (with power transistor) and spark plug 2. Intake valve timing control solenoid
valve 3. Refrigerant pressure sensor
4. Knock sensor 5. Fuel injector6. Cooling fan motor
7. Camshaft position sensor (PHASE) 8. IPDM E/R 9. ECM
10. Mass air flow sensor (with intake air temperature sensor) 11. Engine coolant temperature sensor 12. Electric throttle control actuator
(with built in throttle position sensor
and throttle control motor)
13. EVAP canister purge volume control solenoid valve
PBIB2939E
Revision: January 20102010 Versa

ENGINE CONTROL SYSTEMEC-31
< FUNCTION DIAGNOSIS > [HR16DE]
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1. Mass air flow sensor
(with intake air temperature sensor) 2. Engine coolant temperature sensor 3. Electric throttle control actuator
4. Camshaft position sensor (PHASE) 5. Ignition coil (with power transistor) 6. Fuel injector
7. EVAP canister purge volume control solenoid valve
Vehicle front
PBIB2940E
Revision: January 20102010 Versa