Nissan Cube. Instruction — part 957

TM-84

< SYSTEM DESCRIPTION >

[CVT: RE0F08B]

CONTROL SYSTEM

*1: Input via CAN communications.

*2: 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

*2

Input

Transmission range switch

X

X

X

X

X

X

CVT fluid temperature sensor

X

X

X

X

X

Secondary pressure sensor

X

X

Primary speed sensor

X

X

X

X

X

Secondary speed sensor

X

X

X

X

X

Engine speed signal

*1

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

Stop lamp switch signal

*1

X

X

X

X

Overdrive control switch signal

*1

X

X

X

X

TCM power supply voltage signal

X

X

X

X

X

X

Output

Line pressure solenoid valve

X

X

X

Secondary pressure solenoid valve

X

X

TCC solenoid valve

X

X

X

Lock-up select solenoid valve

X

X

X

Step motor

X

X

CONTROL SYSTEM

TM-85

< SYSTEM DESCRIPTION >

[CVT: RE0F08B]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

Component Parts Location

INFOID:0000000009948924

NOTE:

The following components are included in control valve assembly.

• CVT fluid temperature sensor

• Torque converter clutch solenoid valve

• Lock-up select solenoid valve

• Line pressure solenoid valve

1.

Shift position indicator
(On the combination meter)

2.

OD OFF indicator lamp
(On the combination meter)

3.

Crankshaft position sensor

4.

ECM
Refer to

EC-36,

"Component Parts Location"

5.

IPDM E/R
Refer to

PCS-5, "Component Parts

Location"

(With intelligent Key sys-

tem),

PCS-36, "Component Parts

Location"

(Without intelligent Key

system)

6.

BCM
Refer to

BCS-10, "Component Parts

Location"

(With intelligent Key sys-

tem),

BCS-95, "Component Parts

Location"

(Without intelligent Key

system)

7.

Overdrive control switch

8.

Secondary speed sensor

9.

Transmission range switch

10. Control valve assembly

*

11.

CVT unit connector

12. Primary speed sensor

13. Stop lamp switch

14. Accelerator pedal position sensor

15. TCM

A.

Center console

B.

Transaxle assembly

C.

Accelerator pedal, upper

D.

Brake pedal, left side

JSDIA1310GB

TM-86

< SYSTEM DESCRIPTION >

[CVT: RE0F08B]

CONTROL SYSTEM

• Secondary pressure solenoid valve

• Secondary pressure sensor

• Step motor

• ROM assembly

*: Control valve assembly is included in transaxle assembly.

Component Description

INFOID:0000000009948925

Name

Function

Transmission range switch

TM-109, "Description"

CVT fluid temperature sensor

TM-112, "Description"

Secondary pressure sensor

TM-137, "Description"

Primary speed sensor

TM-116, "Description"

Secondary speed sensor

TM-119, "Description"

Line pressure solenoid valve

TM-129, "Description"

Secondary pressure solenoid valve

TM-135, "Description"

TCC solenoid valve

TM-123, "Description"

Lock-up select solenoid valve

TM-154, "Description"

Step motor

TM-157, "Description"

TCM

TM-82, "Component Description"

Accelerator pedal position sensor

TM-147, "Description"

Stop lamp switch

TM-106, "Description"

Overdrive control switch

TM-162, "Description"

LOCK-UP AND SELECT CONTROL SYSTEM

TM-87

< SYSTEM DESCRIPTION >

[CVT: RE0F08B]

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:0000000009948926

System Description

INFOID:0000000009948927

• 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 AT models.

• Lock-up is prohibited when CVT fluid temperature is low.

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.

JSDIA1355GB

JPDIA0312GB