Nissan Teana J32. Manual - part 1166

TM-188

< FUNCTION DIAGNOSIS >

[CVT: RE0F10A]

HYDRAULIC CONTROL SYSTEM

Normal Control

Optimize the line pressure and secondary pressure, depending 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 PNP switch signal, the lock-up signal, the voltage, the target gear ratio, the
fluid temperature, and the fluid pressure.

Feedback Control

For the normal fluid control and the select fluid control, secondary pressure is detected for feedback control by
using a secondary pressure sensor to set a high-precision secondary pressure.

Component Parts Location

INFOID:0000000003809652

*: Control valve assembly is included in CVT assembly.

NOTE:
The following components are included in control valve assembly (8).
• CVT fluid temperature sensor

1.

Sport mode switch

2.

Shift position indicator

3.

SPORT indicator lamp

4.

TCM

5.

Secondary speed sensor

6.

PNP switch

7.

Primary speed sensor

8.

Control valve assembly

*

9.

CVT unit connector

10. Accelerator pedal position sensor

A.

Center console

B.

Combination meter

C.

Engine room LH

D.

CVT assembly

E.

Accelerator pedal, upper

JPDIA0746ZZ

HYDRAULIC CONTROL SYSTEM

TM-189

< FUNCTION DIAGNOSIS >

[CVT: RE0F10A]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

• Torque converter clutch solenoid valve
• Line pressure solenoid valve
• Step motor
• ROM assembly
• Secondary pressure sensor
• Secondary pressure solenoid valve
• Lock-up select solenoid valve

Component Description

INFOID:0000000003806357

TRANSAXLE ASSEMBLY

EXCEPT TRANSAXLE ASSEMBLY

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 deactivates the lock-up.
• Locks-up smoothly by opening lock-up operation excessively.

Shift control valve

Controls inflow/outflow of line pressure from the primary pulley depending on the stroke 
difference 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. 

Manual valve

Transmits 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 valve

The select switch valve enables to select engagement/disengagement of lock-up clutch 
and that of forward clutch and reverse clutch.

TCC solenoid valve

TM-230

Secondary pressure solenoid valve

TM-240

Line pressure solenoid valve

TM-234

Step motor

TM-261

Lock-up select solenoid valve

TM-258

Primary speed sensor

TM-218

Secondary speed sensor

TM-222

PNP switch

TM-213

Primary pulley

TM-186

Secondary pulley

Forward clutch

Torque converter

Name

Function

TCM

Judges the vehicle driving status according to the signal from each sensor and controls 
the non-step transmission mechanism properly.

Accelerator pedal position sensor

TM-252

TM-190

< FUNCTION DIAGNOSIS >

[CVT: RE0F10A]

CONTROL SYSTEM

CONTROL SYSTEM

System Diagram

INFOID:0000000003806358

System Description

INFOID:0000000003806359

The CVT senses vehicle operating conditions through various sensors. It always controls the optimum shift
position and reduces shifting and lock-up shocks.

TCM FUNCTION 

The function of the TCM is to:
• Receive input signals sent from various switches and sensors.
• Determine required line pressure, shifting point, and lock-up operation.
• Send required output signals to the step motor and the respective solenoids.

INPUT/OUTPUT SIGNAL OF TCM

JPDIA0744GB

SENSORS (or SIGNALS)

⇒

TCM

⇒

ACTUATORS

PNP switch
Accelerator pedal position signal
Closed throttle position signal
Engine speed signal
CVT fluid temperature sensor
Vehicle speed signal
Sport mode switch signal
Stop lamp switch signal
Primary speed sensor
Secondary speed sensor
Secondary pressure sensor

Shift control
Line pressure control
Primary pressure control
Secondary pressure control
Lock-up control
Engine brake control
Vehicle speed control
Fail-safe control
Self-diagnosis
CONSULT-III communication 
line
Duet-EA control
CAN system
On board diagnosis

Step motor 
Torque converter clutch solenoid 
valve
Lock-up select solenoid valve
Line pressure solenoid valve
Secondary pressure solenoid 
valve
SPORT indicator lamp
Shift position indicator

CONTROL SYSTEM

TM-191

< FUNCTION DIAGNOSIS >

[CVT: RE0F10A]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

*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 control

Lock-up 

control

CAN com-

munication 

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

Secondary pressure sensor

X

X

X

Out-
put

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