Nissan Murano. Manual - part 1370

TM-22

< SYSTEM DESCRIPTION >

[CVT: RE0F09B]

CONTROL SYSTEM

CONTROL SYSTEM

System Diagram

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System Description

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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

JSDIA1370GB

SENSORS (or SIGNAL)

⇒

TCM

⇒

ACTUATORS

Transmission range switch
Accelerator pedal position signal
Closed throttle position signal
Engine speed signal
CVT fluid temperature sensor
Vehicle speed signal
Overdrive control switch signal
Stop lamp switch signal
Primary speed sensor
Secondary speed sensor
Primary pressure 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 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
OD OFF indicator lamp
Shift position indicator
Starter relay

CONTROL SYSTEM

TM-23

< SYSTEM DESCRIPTION >

[CVT: RE0F09B]

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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.

Control item

Fluid

 pressure

 control

Select con-

trol

Shift con-

trol

Lock-up 

control

CAN com-

munica-

tion control

Fail-safe 

function

*3

Input

Transmission  range  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

Overdrive control 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

OD OFF indicator signal

*2

X

X

TM-24

< SYSTEM DESCRIPTION >

[CVT: RE0F09B]

CONTROL SYSTEM

Component Parts Location

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Component Description

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TRANSAXLE ASSEMBLY

JSDIA1368GB

CONTROL SYSTEM

TM-25

< SYSTEM DESCRIPTION >

[CVT: RE0F09B]

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EXCEPT TRANSAXLE ASSEMBLY

Name

Function

Transmission range switch

TM-50, "Description"

CVT fluid temperature sensor

TM-53, "Description"

Primary speed sensor

TM-57, "Description"

Secondary speed sensor

TM-60, "Description"

Primary pressure sensor

TM-82, "Description"

Secondary pressure sensor

TM-77, "Description"

Step motor

TM-101, "Description"

TCC solenoid valve

TM-65, "Description"

Lock-up select solenoid valve

TM-98, "Description"

Line pressure solenoid valve

TM-69, "Description"

Secondary pressure solenoid valve

TM-75, "Description"

Name

Function

TCM

TM-20, "Component Description"

Stop lamp switch

TM-47, "Description"