engine oil NISSAN LATIO 2011 Service Manual PDF

CVT-4
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
135
Wiring Diagram - CVT - ODSW .............................136
Diagnosis Procedure .............................................136
Component Inspection ...........................................138
SHIFT POSITION INDICATOR CIRCUIT ........140
Description ........................................................... ..140
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
140
Diagnosis Procedure .............................................140
TROUBLE DIAGNOSIS FOR SYMPTOMS .....141
Wiring Diagram - CVT - NONDTC ....................... ..141
O/D OFF Indicator Lamp Does Not Come On .......143
Engine Cannot Be Started in "P" and "N" Position ..145
In "P" Position, Vehicle Moves Forward or Back-
ward When Pushed ...............................................
145
In "N" Position, Vehicle Moves ............................ ..146
Large Shock "N" → "R" Position .......................... ..146
Vehicle Does Not Creep Backward in "R" Position ..147
Vehicle Does Not Creep Forward in "D" or "L" Po-
sition ......................................................................
148
Vehicle Speed Does Not Change in "L" Position ...149
Vehicle Speed Does Not Change in overdrive-off
mode ......................................................................
150
Vehicle Speed Does Not Change in "D" Position ..151
Vehicle Does Not Decelerate by Engine Brake .....151
CVT SHIFT LOCK SYSTEM ........................... .153
Description ........................................................... ..153
Shift Lock System Electrical Parts Location ..........154
Wiring Diagram - CVT - SHIFT ..............................155
Diagnosis Procedure .............................................155
TCM ..................................................................159
Removal and Installation ..................................... ..159
SHIFT CONTROL SYSTEM ............................160
Removal and Installation ..................................... ..160
CVT Shift Selector Disassembly and Assembly ....163
Shift Selector Handle Removal and Installation ....163
Adjustment of CVT Position ................................. ..164
Checking of CVT Position ......................................164
KEY INTERLOCK CABLE ...............................166
Removal and Installation ..................................... ..166
PRIMARY SPEED SENSOR ...........................169
Exploded View ..................................................... ..169
Removal and Installation .......................................169
Inspection ............................................................. .169
SECONDARY SPEED SENSOR ......................170
Exploded View ..................................................... .170
Removal and Installation .......................................170
Inspection ............................................................. .170
AIR BREATHER HOSE ....................................171
Removal and Installation .......................................171
OIL PAN .......................................................... ..172
Exploded View ..................................................... .172
Removal and Installation .......................................172
Inspection ............................................................. .173
DIFFERENTIAL SIDE OIL SEAL .....................174
Removal and Installation .......................................174
CVT OIL WARMER SYSTEM ......................... ..175
WATER HOSE ........................................................ .175
WATER HOSE : Exploded View ...........................175
WATER HOSE : Removal and Installation ...........175
WATER HOSE : Inspection ..................................176
CVT FLUID COOLER HOSE .................................. .176
CVT FLUID COOLER HOSE : Exploded View .....177
CVT FLUID COOLER HOSE : Removal and In-
stallation ................................................................
177
CVT FLUID COOLER HOSE : Inspection .............179
CVT OIL WARMER ................................................ .179
CVT OIL WARMER : Exploded View ....................179
CVT OIL WARMER : Removal and Installation ....179
CVT OIL WARMER : Inspection .......................... .179
TRANSAXLE ASSEMBLY ...............................180
Removal and Installation .......................................180
SERVICE DATA AND SPECIFICATIONS
(SDS) .............................................................. ..
183
General Specification ........................................... .183
Vehicle Speed When Shifting Gears .....................183
Stall Speed ............................................................183
Line Pressure ........................................................183
Solenoid Valves ....................................................184
CVT Fluid Temperature Sensor ............................184
Primary Speed Sensor ..........................................184
Secondary Speed Sensor .................................... .184
Removal and Installation .......................................184
Revision: May 2010 2011 Versa

CVT FLUIDCVT-15
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FLUID CONDITION CHECK
Changing CVT FluidINFOID:0000000005928731
1. Warm up CVT fluid by driving the vehicle for 10 minutes.
• : Vehicle front
• Radiator (2)
• CVT fluid cooler hose [inlet side (3)]
• Transaxle assembly (4)
2. Drain CVT fluid from CVT fluid cooler hose [outlet side (1)] and refill with new specified NISSAN CVT fluid in the CVT fluid
charging pipe with the engine running at idle speed.
CAUTION:
Only use the specifi ed NISSAN CVT fluid.
3. Refill until new CVT fluid comes out from CVT fluid cooler hose [outlet side (1)]. NOTE:
About 30 to 50% extra fluid will be required for this procedure.
4. Check fluid level and condition. Refer to CVT-14, "
Checking CVT Fluid".
CAUTION:
Delete CVT fluid deterioration date with CONSULT-III after changing CVT fluid. Refer to CVT-48,
"CONSULT-III Function (TRANSMISSION)".
CVT Fluid Cooler CleaningINFOID:0000000005928732
Whenever a CVT is repaired, overhauled, or replaced, the CVT fluid cooler mounted in the radiator must be
inspected and cleaned.
Metal debris and friction material, if present, can be trapped or become deposit in the CVT fluid cooler. This
debris can contaminate the newly serviced CVT or, in severe cases, can block or restrict the flow of CVT fluid.
In either case, malfunction of the newly serviced CVT may occur.
Debris, if present, may deposit as CVT fluid enters the cool er inlet. It will be necessary to back flush the cooler
through the cooler outlet in order to flush out any built up debris.
CVT FLUID COOLER CLEANING PROCEDURE
1. Identify the CVT inlet and outlet fluid cooler hoses.
2. Position an oil pan under the inlet and outlet cooler hoses.
Fluid status Conceivable cause Required operation
Varnished (viscous
varnish state) Clutch, brake
scorchedReplace the CVT fluid and check the
CVT main unit and the vehicle for
malfunctions (wire harness, cooler
pipes, etc.)
Milky white or cloudy Water in the fluid Replace the CVT fluid and check for places where water is getting in.
Large amount of
metal powder mixed
in fluid Unusual wear of
sliding parts within
CVTReplace the CVT fluid and check for
improper operation of the CVT.
ATA0022D
Fluid capacity and grade: Refer to
MA-14, "Fluids
and Lubricants".SCIA6088E
Revision: May 2010 2011 Versa

CVT SYSTEMCVT-23
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*1: Input by CAN communications.
*2: Output by CAN communications.
*3: If these input and output signals are different, the TCM triggers the fail-safe function.
Line Pressure and Secondary Pressure ControlINFOID:0000000005928739
• When an input torque signal equivalent to the engine drive force is sent from the ECM to the TCM, the TCM
controls the line pressure solenoid valve and secondary pressure solenoid valve.
• This line pressure solenoid controls the pressure regulat or valve as the signal pressure and adjusts the pres-
sure of the operating oil discharged from the oil pump to the line pressure most appropriate to the driving
state. Secondary pressure is cont rolled by decreasing line pressure.
NORMAL CONTROL
Optimize the line pressure and secondary pressure, dependi ng on driving conditions, on the basis of the throt-
tle position, the engine speed, the primary pulley (input ) revolution speed, the secondary pulley (output) revo-
lution speed, the brake signal, the transmission range switch signal, the lock-up signal, the voltage, the target
gear ratio, the fluid temperat ure, and the fluid pressure.
FEEDBACK CONTROL
When controlling the normal fluid pressure or the sele cted fluid pressure, the secondary pressure can be set
more accurately by using the fluid pressure sensor to detect the secondary pressure and controlling the feed-
back.
Shift ControlINFOID:0000000005928740
In order to select the gear ratio which can obtain the dr iving force in accordance with driver's intention and the
vehicle condition, TCM monitors the driving conditions, such as the vehicle speed and the throttle position and
selects the optimum gear ratio, and determines the gear change steps to the gear ratio. Then send the com-
Out-
putSte p mo tor
XX
TCC solenoid valve XXX
Lock-up select solenoid valve XXX
Line pressure solenoid valve XXX X
Secondary pressure solenoid valve XX X
O/D OFF indicator signal
(*2)XX
Control item
Fluid
pressure
control Select con-
trol Shift control
Lock-up
control CAN com-
munication
control Fail-safe
function
(*3)
SCIA1846E
Revision: May 2010 2011 Versa

CVT-30
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TROUBLE DIAGNOSIS
TROUBLE DIAGNOSIS
DTC Inspection Priority ChartINFOID:0000000005928748
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
NOTE:
If DTC “U1000” is displayed with other DTCs, first perform the trouble diagnosis for DTC “U1000”.
Refer to
CVT-56
.
Fail-SafeINFOID:0000000005928749
The TCM has an electrical fail-safe mode. This mode make s it possible to operate even if there is an error in a
main electronic control input/output signal circuit.
FAIL-SAFE FUNCTION
If any malfunction occurs in a sensor or solenoid, this function controls the CVT to make driving possible.
Secondary Speed Sensor
The shift pattern is changed in accordance with thrott le position when an unexpected signal is sent from the
secondary speed sensor to the TCM. T he overdrive-off mode is inhibited, and the transaxle is put in “D”.
Primary Speed Sensor
The shift pattern is changed in accordance with thro ttle position and secondary speed (vehicle speed) when
an unexpected signal is sent from the primary speed sensor to the TCM. The overdrive-off mode is inhibited,
and the transaxle is put in “D”.
Transmission Range Switch
If an unexpected signal is sent from the transmission range switch to the TCM, the transaxle is put in “D”.
CVT Fluid Temperature Sensor
If an unexpected signal is sent from the CVT fluid temperature sensor to the TCM, the gear ratio in use before
receiving the unexpected signal is maintained or t he gear ratio is controlled to keep engine speed under 3500
rpm.
Secondary Pressure Sensor
• If an unexpected signal is sent from the secondary pressure sensor to the TCM, the secondary pressure
feedback control is stopped and the offset value obtai ned before the non-standard condition occurs is used
to control line pressure.
• If secondary pressure sensor error signal is input to TCM, secondary pressure feedback control stops, but line pressure is controlled normally.
Line Pressure Solenoid
If an unexpected signal is sent from the solenoid to the TCM, the line pressure solenoid is turned OFF to
achieve the maximum fluid pressure.
Secondary Pressure Solenoid
If an unexpected signal is sent from the solenoid to t he TCM, the secondary pressure solenoid is turned OFF
to achieve the maximum fluid pressure.
Torque Converter Clutch Solenoid
If an unexpected signal is sent from the solenoid to t he TCM, the torque converter clutch solenoid is turned
OFF to cancel the lock-up.
Step Motor
If an unexpected signal is sent from the step motor to the TCM, the step motor coil phases “A” through “D” are
all turned OFF to hold the gear ratio used right before the non-standard condition occurred.
CVT Lock-up Select Solenoid
If an unexpected signal is sent from the solenoid to the TCM, the CVT lock-up select solenoid is turned OFF to
cancel the lock-up.
Priority Detected items (DTC)
1 U1000
2 Except above
Revision: May 2010 2011 Versa

CVT-38
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TROUBLE DIAGNOSIS
• Inspect for fluid leakage and check the fluid level. Refer to
CVT-14, "Checking CVT Fluid" .
Fluid Condition Check
Inspect the fluid condition.
STALL TEST
Stall Test Procedure
1. Inspect the amount of engine oil. Replenish the engine oil if necessary.
2. Drive for about 10 minutes to warm up the vehicle so that the
CVT fluid temperature is 50 to 80 °C (122 to 176° F). Inspect the
amount of CVT fluid. Replenish if necessary.
3. Securely engage the parking brake so that the tires do not turn.
4. Install a tachometer where it can be seen by driver during test. •It is good practice to mark the point of specified engine
rpm on indicator.
5. Start engine, apply foot brake, and place selector lever in “D” position.
Fluid status Conceivable cause Required operation
Varnished (viscous
varnish state) Clutch, brake
scorchedReplace the CVT fluid and check the
CVT main unit and the vehicle for
malfunctions (wire harnesses, cool-
er pipes, etc.)
Milky white or
cloudy Water in the fluidReplace the CVT fluid and check for
places where water is getting in.
Large amount of
metal powder mixed
in Unusual wear of
sliding parts within
CVT
Replace the CVT fluid and check for
improper operation of the CVT.
SAT638A
SAT647B
SAT513G
SAT775B
Revision: May 2010
2011 Versa

TROUBLE DIAGNOSISCVT-39
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6. While holding down the foot brake, gradually press down the accelerator pedal.
7. Quickly read off the stall speed, and then quickly remove your foot from the accelerator pedal.
CAUTION:
Do not hold down the accelerat or pedal for more than 5 sec-
onds during this test.
8. Move the selector lever to the “N” position.
9. Cool down the CVT fluid. CAUTION:
Run the engine at idle for at least 1 minute.
10. Repeat steps 6 through 9 with selector lever in “R” position.
Judgement Stall Test
O: Stall speed within standard value position.
H: Stall speed is higher than standard value.
L: Stall speed is lower than standard value.
LINE PRESSURE TEST
Line Pressure Test Port
Line Pressure Test Procedure
1. Inspect the amount of engine oil and replenish if necessary.
2. Drive the car for about 10 minutes to warm it up so that the CVT fluid reaches in the range of 50 to 80°C
(122 to 176 °F), then inspect the amount of CVT fluid and replenish if necessary.
NOTE: Stall speed:
CVT-183, "
Stall Speed"
SAT514G
SAT771B
Selector lever position
Expected problem location
“D” “R”
Stall rotation HO•F
orw ard c lu tc h
O H • Reverse brake
L L • Engine and torque converter one-way clutch
HH • Line pressure low
• Primary pulley
• Secondary pulley
•Steel belt
SCIA6184E
Revision: May 2010
2011 Versa

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-183, "
Line Pressure"At stall
Revision: May 2010 2011 Versa

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
Revision: May 2010
2011 Versa

TROUBLE DIAGNOSISCVT-43
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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:0000000005928757
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: May 2010 2011 Versa

TROUBLE DIAGNOSISCVT-53
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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: May 2010 2011 Versa