2010 NISSAN LATIO Service Repair Manual

automatic transmission sat nav wiring diagram tailgate OBD port ESP

Page 1049 of 3745

NISSAN LATIO 2010 Service Repair Manual CVT-16
< SERVICE INFORMATION >[RE0F08B]
CVT FLUID
3. Disconnect the fluid cooler inlet and outlet rubber hoses from the
steel cooler tubes.
NOTE:
Replace the cooler hoses if rubber material from the h

CVT-16
< SERVICE INFORMATION >[RE0F08B]
CVT FLUID
3. Disconnect the fluid cooler inlet and outlet rubber hoses from the
steel cooler tubes.
NOTE:
Replace the cooler hoses if rubber material from the hose
remains on the tube fitting.
4. Allow any CVT fluid that remains in the cooler hoses to drain into the oil pan.
5. Insert the extension adapter hose of a can of Transmission
Cooler Cleaner (Nissan P/N 999MP-AM006) into the cooler out-
let hose.
CAUTION:
• Wear safety glasses and rubber gloves when spraying the Transmission Cooler Cleaner.
• Spray Transmission Cooler Cleaner only with adequate
ventilation.
• Avoid contact with eyes and skin.
• Do not breath vapors or spray mist.
6. Hold the hose and can as high as possible and spray Transmis- sion Cooler Cleaner in a continuous stream into the cooler outlet
hose until CVT fluid flows out of the cooler inlet hose for 5 seconds.
7. Insert the tip of an air gun into the end of the cooler outlet hose.
8. Wrap a shop rag around the air gun tip and of the cooler outlet hose.
9. Blow compressed air regulated to 5 to 9 kg/cm
2 (71 to 128 psi)
through the cooler outlet hose for 10 seconds to force out any
remaining CVT fluid.
10. Repeat steps 5 through 9 three additional times.
11. Position an oil pan under the banjo bolts that connect the CVT fluid cooler steel lines to the transaxle.
12. Remove the banjo bolts.
13. Flush each steel line from the cooler side back toward the tran- saxle by spraying Transmission Cooler Cleaner in a continuous stream for 5 seconds.
14. Blow compressed air regulated to 5 to 9 kg/cm
2 (71 to 128 psi) through each steel line from the cooler
side back toward the transaxle for 10 seconds to force out any remaining CVT fluid.
15. Ensure all debris is removed from the steel cooler lines.
16. Ensure all debris is removed from the banjo bolts and fittings.
17. Perform "CVT FLUID COOLER DIAGNOSIS PROCEDURE".
CVT FLUID COOLER DIAGNOSIS PROCEDURE
NOTE:
Insufficient cleaning of the cooler inlet hose exterior may lead to inaccurate debris identification.
1. Position an oil pan under the transaxle's inlet and outlet cooler hoses.
2. Clean the exterior and tip of the cooler inlet hose.
SCIA4421E
SCIA4422E
SCIA4423E
Revision: January 20102010 Versa

Page 1050 of 3745

NISSAN LATIO 2010 Service Repair Manual CVT FLUIDCVT-17
< SERVICE INFORMATION > [RE0F08B]
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3. Insert the extension adapter hose of a can of Transmission Cooler Cleaner (Nissan P/N 999MP-AM006) into the coole

Page 1051 of 3745

NISSAN LATIO 2010 Service Repair Manual CVT-18
< SERVICE INFORMATION >[RE0F08B]
CVT FLUID
b. If one or more pieces of debris are found that are over 1 mm
(0.040 in) in size and/or peeled clutch facing material is found in
the coffee filter,

Page 1052 of 3745

NISSAN LATIO 2010 Service Repair Manual CVT SYSTEMCVT-19
< SERVICE INFORMATION > [RE0F08B]
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CVT SYSTEM
Cross-Sectional View - RE0F08BINFOID:0000000005397770
1. Converter housing 2. Oil pump3. Forward clutch

Page 1053 of 3745

NISSAN LATIO 2010 Service Repair Manual CVT-20
< SERVICE INFORMATION >[RE0F08B]
CVT SYSTEM
Control System
INFOID:0000000005397771
AWDIA0767GB
Revision: January 20102010 Versa

Page 1054 of 3745

NISSAN LATIO 2010 Service Repair Manual CVT SYSTEMCVT-21
< SERVICE INFORMATION > [RE0F08B]
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Hydraulic Control SystemINFOID:0000000005397772
TCM FunctionINFOID:0000000005397773
The function of the TCM is to:

Page 1055 of 3745

NISSAN LATIO 2010 Service Repair Manual CVT-22
< SERVICE INFORMATION >[RE0F08B]
CVT SYSTEM
CONTROL SYSTEM DIAGRAM
CAN CommunicationINFOID:0000000005397774
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for

Page 1056 of 3745

NISSAN LATIO 2010 Service Repair Manual CVT SYSTEMCVT-23
< SERVICE INFORMATION > [RE0F08B]
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*1: Input by CAN communications.
*2: Output by CAN communications.
*3: If these input and output signals are differ

CVT SYSTEMCVT-23
< SERVICE INFORMATION > [RE0F08B]
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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:0000000005397776
• 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:0000000005397777
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: January 20102010 Versa

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