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Nissan Versa Note. Manual - part 798

TM-72

< SYSTEM DESCRIPTION >

[CVT: RE0F11A]

STRUCTURE AND OPERATION

FLUID COOLER & FLUID WARMER SYSTEM
FLUID COOLER & FLUID WARMER SYSTEM : System Description

INFOID:0000000009019609

CVT FLUID COOLER SCHEMATIC

Without CVT fluid cooler (air-cooling)

With CVT fluid cooler (air-cooling)

COMPONENT DESCRIPTION

CVT Oil Warmer

Manual valve

Distributes the clutch and brake operation pressures (pilot pressure) corresponding to
each shift position.

High clutch/reverse brake switching valve

Switches the circuit for the high clutch and the reverse brake.

Torque converter clutch control valve

It is operated with the torque converter clutch solenoid valve and it adjusts the tighten-
ing pressure and non-tightening pressure of the torque converter clutch piston of the
torque converter.

Primary pressure control valve

It is operated with the primary pressure solenoid valve and adjusts the feed pressure to
the primary pulley.

Primary pressure solenoid valve

TM-64, "CVT CONTROL SYSTEM : Primary Pressure Solenoid Valve"

Low brake solenoid valve

TM-64, "CVT CONTROL SYSTEM : Low Brake Solenoid Valve"

High clutch & reverse brake solenoid valve

TM-64, "CVT CONTROL SYSTEM : High Clutch & Reverse Brake Solenoid Valve"

Torque converter clutch solenoid valve

TM-64, "CVT CONTROL SYSTEM : Torque Converter Clutch Solenoid Valve"

Line pressure solenoid valve

TM-65, "CVT CONTROL SYSTEM : Line Pressure Solenoid Valve"

Part name

Function

JSDIA2943GB

STRUCTURE AND OPERATION

TM-73

< SYSTEM DESCRIPTION >

[CVT: RE0F11A]

• The CVT oil warmer (1) is installed on the front part of transaxle

assembly.

• When engine is started while engine and CVT are cold, engine

coolant temperature rises more quickly than CVT fluid tempera-

ture. CVT oil warmer is provided with two circuits for CVT and

engine coolant respectively so that warmed engine coolant warms

CVT quickly. This helps shorten CVT warming up time, improving

fuel economy.

• A cooling effect is obtained when CVT fluid temperature is high.

CVT Fluid Cooler (Water-cooling)

• The CVT fluid cooler (water-cooling) is installed in the radiator side tank (right side).

• CVT fluid is cooled by engine coolant.

CVT Fluid Cooler (Air-cooling)

• The CVT fluid cooler (air-cooling) is installed to vehicle front.

• The CVT fluid cooler (air-cooling) prevents CVT fluid temperature from an abnormal increase while driving

the vehicle. When flowing into the CVT fluid cooler (air-cooling), CVT fluid is cooled by driving blast while

driving the vehicle.

Heater Thermostat

• The heater thermostat (1) is installed on the front part of transaxle

assembly.

• The heater thermostat open and close with set temperature.

SHIFT LOCK SYSTEM
SHIFT LOCK SYSTEM : System Description

INFOID:0000000009019619

The selector lever cannot be shifted from “P” position to any other position unless the ignition switch is in the

ON position and the brake pedal is depressed.

KEY LOCK SYSTEM
KEY LOCK SYSTEM : System Description

INFOID:0000000009019620

• The key lock mechanism also operates as a shift lock:

With the ignition switch turned to ON, selector lever cannot be shifted from “P” position to any other position

unless brake pedal is depressed.

With the key removed, selector lever cannot be shifted from “P” position to any other position.

The key cannot be removed unless selector lever is placed in “P” position.

• The shift lock and key lock mechanisms are controlled by the ON-OFF operation of the shift lock solenoid

and by the operation of the rotator and slider located inside key cylinder, respectively.

JSDIA2586ZZ

JSDIA2585ZZ

TM-74

< SYSTEM DESCRIPTION >

[CVT: RE0F11A]

SYSTEM

SYSTEM

CVT CONTROL SYSTEM
CVT CONTROL SYSTEM : System Description

INFOID:0000000009019610

SYSTEM DIAGRAM

JSDIA2803GB

SYSTEM

TM-75

< SYSTEM DESCRIPTION >

[CVT: RE0F11A]

INPUT/OUTPUT SIGNAL TABLE

SYSTEM DESCRIPTION

• CVT detects the vehicle driving status from switches, sensors and signals, and controls the vehicle so that

the optimum shift position and shift timing may always be achieved. It also controls the vehicle to reduce

shift and lockup shock, etc.

• Receives input signals from switches and sensors.

• Sends the output signal necessary for operation of solenoid valves, and evaluates the line pressure, shift

timing, lockup operation, engine brake performance, etc.

• If a malfunction occurs on the electric system, activate the fail-safe mode only to drive the vehicle.

LIST OF CONTROL ITEMS AND INPUT/OUTPUT

Sensor (or signal)

⇒

TCM function

⇒

Actuator

• Engine and CVT integrated control

signal

• Engine speed signal
• Accelerator pedal position signal
• Closed throttle position signal
• Stop lamp switch signal
• Secondary pressure sensor
• CVT fluid temperature sensor
• Primary speed sensor
• Secondary speed sensor
• Output speed sensor
• Transmission range switch signal
• Overdrive control switch signal
• Vehicle speed signal (ABS)
• ABS operation signal
• A/C compressor feedback signal
• G sensor
• N idle instruction signal
• Turn indicator signal

• Line pressure control (

TM-82, "LINE

PRESSURE CONTROL : System Descrip-
tion"

)

• Shift control (

TM-83, "SHIFT CONTROL :

System Description"

)

• Select control (

TM-85, "SELECT CON-

TROL : System Description"

)