2008 NISSAN LATIO Service Repair Manual

TPMS ECO mode mileage checking oil torque engine coolant

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Page 857 of 2771

NISSAN LATIO 2008 Service Repair Manual CVT-18
< SERVICE INFORMATION >
CVT SYSTEM
CVT SYSTEM
Cross-Sectional View - RE0F08AINFOID:0000000001703436
1. Converter housing 2. Oil pump 3. Forward clutch
4. Reverse brake 5. Planetary carrier 6. P

Page 858 of 2771

NISSAN LATIO 2008 Service Repair Manual CVT SYSTEM
CVT-19
< SERVICE INFORMATION >
D
E
F
G
H
I
J
K
L
MA
B
CVT
N
O
P
Control SystemINFOID:0000000001703437
SCIA7953E

Page 859 of 2771

NISSAN LATIO 2008 Service Repair Manual CVT-20
< SERVICE INFORMATION >
CVT SYSTEM
Hydraulic Control System
INFOID:0000000001703438
TCM FunctionINFOID:0000000001703439
The function of the TCM is to:
• Receive input signals sent from variou

Page 860 of 2771

NISSAN LATIO 2008 Service Repair Manual CVT SYSTEM
CVT-21
< SERVICE INFORMATION >
D
E
F
G
H
I
J
K
L
MA
B
CVT
N
O
P
CONTROL SYSTEM DIAGRAM
CAN CommunicationINFOID:0000000001703440
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a seria

Page 861 of 2771

NISSAN LATIO 2008 Service Repair Manual CVT-22
< SERVICE INFORMATION >
CVT SYSTEM
Input/Output Signal of TCM
INFOID:0000000001703441
*1: Input by CAN communications.
*2: Output by CAN communications.
*3: If these input and output signals ar

Page 862 of 2771

NISSAN LATIO 2008 Service Repair Manual CVT SYSTEM
CVT-23
< SERVICE INFORMATION >
D
E
F
G
H
I
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K
L
MA
B
CVT
N
O
P
Optimize the line pressure and secondary pressure, depending on driving conditions, on the basis of the throt-
tle position,

Page 863 of 2771

NISSAN LATIO 2008 Service Repair Manual CVT-24
< SERVICE INFORMATION >
CVT SYSTEM
By limiting the gear range to the lowest position, the strong driving
force and the engine brake can be secured.
DOWNHILL ENGINE BRAKE CONTROL (AUTO ENGINE BR

Page 864 of 2771

NISSAN LATIO 2008 Service Repair Manual CVT SYSTEM
CVT-25
< SERVICE INFORMATION >
D
E
F
G
H
I
J
K
L
MA
B
CVT
N
O
P Lock-up and Select Control System Diagram
Lock-up Released
In the lock-up released state, the torque converter clutch contro

CVT SYSTEM
CVT-25
< SERVICE INFORMATION >
D
E
F
G
H
I
J
K
L
MA
B
CVT
N
O
P Lock-up and Select Control System Diagram
Lock-up Released
In the lock-up released state, the torque converter clutch control valve is set into the unlocked state by the
torque converter clutch solenoid and the lock-up apply pressure is drained.
In this way, the torque converter clutch piston is not coupled.
Lock-up Applied
In the lock-up applied state, the torque converter clutch control valve is set into the locked state by the torque
converter clutch solenoid and lock-up apply pressure is generated.
In this way, the torque converter clutch piston is pressed and coupled.
Select Control
When shifting between “N” (“P”)⇔“D” (“R”), optimize the operating pressure on the basis of the throttle posi-
tion, the engine speed, and the secondary pulley (output) revolution speed to lessen the shift shock.
Control ValveINFOID:0000000001703445
FUNCTION OF CONTROL VALVE
SCIA2374E
Name Function
Torque converter regulator valve Optimizes the supply pressure for the torque converter depending on driving conditions.
Pressure regulator valve Optimizes the discharge pressure from the oil pump depending on driving conditions.
TCC control valve• Activates or deactivate the lock-up.
• Lock-up smoothly by opening lock-up operation excessively.
TCC solenoid valve Controls the TCC control valve or select control valve.
Shift control valveControls flow-in/out of line pressure from the primary pulley depending on the stroke dif-
ference between the stepping motor and the primary pulley.
Secondary valve Controls the line pressure from the secondary pulley depending on operating conditions.
Clutch regulator valve Adjusts the clutch operating pressure depending on operating conditions.
Secondary pressure solenoid valve Controls the secondary valve.
Line pressure solenoid valve Controls the line pressure control valve.
Step motor Controls the pulley ratio.
Manual valveTransmits the clutch operating pressure to each circuit in accordance with the selected
position.
Select control valve Engages forward clutch, reverse brake smoothly depending on select operation.
Select switch valveSwitches torque converter clutch solenoid valve control pressure use to torque converter
clutch control valve or select control valve.
Lock-up select solenoid valve Controls the select switch valve.

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