Nissan Teana J32. Manual - part 1125

TM-24

< FUNCTION DIAGNOSIS >

[CVT: RE0F09B]

CONTROL SYSTEM

• *1: Input via CAN communications.

• *2: Output via CAN communications.

• *3: If these input and output signals are different, the TCM triggers the fail-safe function.

Control item

Fluid

 pressure

 control

Select con-

trol

Shift con-

trol

Lock-up 

control

CAN com-

munica-

tion control

Fail-safe 

function

*3

Input

PNP  switch

X

X

X

X

X

X

Accelerator pedal position signal

*1

X

X

X

X

X

X

Closed throttle position signal

*1

X

X

X

X

Engine speed signal

*1

X

X

X

X

X

CVT fluid temperature sensor

X

X

X

X

X

Sport mode switch signal

*1

X

X

X

X

Stop lamp switch signal

*1

X

X

X

X

Primary  speed  sensor

X

X

X

X

X

Secondary  speed  sensor

X

X

X

X

X

X

Primary pressure sensor

X

X

Secondary pressure sensor

X

X

X

TCM  power  supply  voltage  signal

X

X

X

X

X

X

Output

Step motor

X

X

TCC solenoid valve

X

X

X

Lock-up select solenoid valve

X

X

X

Line pressure solenoid valve

X

X

X

X

Secondary pressure solenoid valve

X

X

X

SPORT indicator signal

*2

X

X

CONTROL SYSTEM

TM-25

< FUNCTION DIAGNOSIS >

[CVT: RE0F09B]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

Component Parts Location

INFOID:0000000003848930

*1: Primary pressure sensor is included in CVT assembly.

*2: Control valve assembly is included in CVT assembly.

NOTE:
The following components are included in control valve assembly (7).
• PNP  switch
• Primary speed sensor
• Step motor
• Secondary pressure solenoid valve
• Line pressure solenoid valve
• Torque converter clutch solenoid valve
• Shift control valve
• Secondary valve
• Manual valve
• Lock-up select solenoid valve

1.

Sport mode switch

2.

Shift position indicator

3.

SPORT indicator lamp

4.

TCM

5.

Secondary speed sensor

6.

Primary pressure sensor

*1

7.

Control valve assembly

*2

8.

CVT unit connector

9.

Accelerator pedal position sensor

A.

Control device

B.

Combination meter

C.

Engine room LH

D.

CVT assembly

E.

Accelerator pedal, upper

JPDIA0747ZZ

TM-26

< FUNCTION DIAGNOSIS >

[CVT: RE0F09B]

CONTROL SYSTEM

• CVT fluid temperature sensor
• Secondary pressure sensor
• ROM  assembly

Component Description

INFOID:0000000003848931

TRANSAXLE ASSEMBLY

EXCEPT TRANSAXLE ASSEMBLY

Name

Function

PNP switch

TM-47

CVT fluid temperature sensor

TM-50

Primary speed sensor

TM-52

Secondary speed sensor

TM-55

Primary pressure sensor

TM-80

Secondary pressure sensor

TM-74

Step motor

TM-97

TCC solenoid valve

TM-62

Lock-up select solenoid valve

TM-94

Line pressure solenoid valve

TM-66

Secondary pressure solenoid valve

TM-72

Name

Function

TCM

TM-22

Stop lamp switch

TM-44

LOCK-UP AND SELECT CONTROL SYSTEM

TM-27

< FUNCTION DIAGNOSIS >

[CVT: RE0F09B]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

LOCK-UP AND SELECT CONTROL SYSTEM

System Diagram

INFOID:0000000003848932

System Description

INFOID:0000000003848933

• The torque converter clutch piston in the torque converter is engaged to eliminate torque converter slip to

increase power transmission efficiency.

• The torque converter clutch control valve operation is controlled by the torque converter clutch solenoid

valve, which is controlled by a signal from TCM. The torque converter clutch control valve engages or
releases the torque converter clutch piston.

• When shifting between “N” (“P”) 

⇔

“D” (“R”), torque converter clutch solenoid valve controls engagement

power of forward clutch and reverse brake.

• The lock-up applied gear range was expanded by locking up the

torque converter at a lower vehicle speed than conventional CVT
models.

TORQUE CONVERTER CLUTCH AND SELECT CONTROL VALVE CONTROL 

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 valve 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 valve 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.

SCIA2374E

JPDIA0312GB