Nissan Juke F15. Instruction — part 1242

TM-158

< SYSTEM DESCRIPTION >

[CVT: RE0F10B]

COMPONENT PARTS

CVT CONTROL SYSTEM : TCM

INFOID:0000000012200853

• The vehicle driving status is judged based on the signals from the sensors, switches, and other control units,

and the optimal transaxle control is performed.

• For TCM control items, refer to

TM-180, "CONTROL SYSTEM : System Description"

.

CVT CONTROL SYSTEM : Transmission Range Switch

INFOID:0000000012200854

• The transmission range switch is installed to upper part of transaxle case.

• The transmission range switch detects the selector lever position.

CVT CONTROL SYSTEM : Primary Speed Sensor

INFOID:0000000012200855

• The primary speed sensor is installed to front part of transaxle assembly.

• The primary speed sensor detects primary pulley speed.

• The primary speed sensor generates the ON-OFF pulse (short waveform) in proportion to the rotating body

speed which is “The higher the rotating body speed is, the faster the change cycle is”. The TCM judges the

rotating speed from the changing cycle of this pulse signal.

CVT CONTROL SYSTEM : Secondary Speed Sensor

INFOID:0000000012200856

• The secondary speed sensor is installed to upper part of converter housing.

• The secondary speed sensor detects secondary pulley speed.

ABS actuator and electric unit (control unit)

The TCM receives the following signal via CAN communications from the ABS actuator
and electric unit (control unit) for judging the vehicle driving conditions.
• Vehicle speed signal (ABS)
• ABS operation signal

Combination meter

The TCM receives the following signal via CAN communications from the combination
meter for judging the driving request from the driver.
• Instruction mode signal
• Non-instruction mode signal
• Instruction mode shift up signal
• Manual mode shift down signal

IPDM E/R

The TCM receives the following signal via CAN communications from the ABS actuator
and electric unit (control unit) for judging the vehicle driving conditions.
• A/C compressor feedback signal

MDU

The TCM receives the following signals from MDU via CAN communication to switch
driving mode of the Integrated Control System.
• NORMAL mode signal
• ECO mode signal
• SPORT mode signal

Name

Function

JSDIA1824GB

COMPONENT PARTS

TM-159

< SYSTEM DESCRIPTION >

[CVT: RE0F10B]

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• The secondary speed sensor generates the ON-OFF pulse (short waveform) in proportion to the rotating

body speed which is “The higher the rotating body speed is, the faster the change cycle is”. The TCM judges

the rotating speed from the changing cycle of this pulse signal.

CVT CONTROL SYSTEM : CVT Fluid Temperature Sensor

INFOID:0000000012200857

• The CVT fluid temperature sensor is installed to control valve.

• The CVT fluid temperature sensor detects CVT fluid temperature in oil pan.

• The fluid temperature sensor uses a thermistor, and changes the signal voltage by converting changes in the

CVT fluid temperature to a resistance value. TCM evaluates the CVT fluid temperature from the signal volt-

age value.

CVT CONTROL SYSTEM : Secondary Pressure Sensor

INFOID:0000000012200858

• The secondary pressure sensor is installed to control valve.

• The secondary pressure sensor detects the pressure applied to the secondary pulley.

JSDIA1824GB

JSDIA1825GB

TM-160

< SYSTEM DESCRIPTION >

[CVT: RE0F10B]

COMPONENT PARTS

• When pressure is applied to the ceramic device in the secondary pressure sensor, the ceramic device is

deformed, resulting in voltage change. TCM evaluates the secondary pressure from its voltage change. Volt-

age is increased along with pressure increase.

CVT CONTROL SYSTEM : Line Pressure Solenoid Valve

INFOID:0000000012200859

• The line pressure solenoid valve is installed to control valve.

• The line pressure solenoid valve controls the pressure regulator valve. For information about the pressure

regulator valve, refer to

TM-173, "MECHANICAL SYSTEM : Component Description"

.

• The line pressure solenoid valve uses the linear solenoid valve [N/H (normal high) type].

NOTE:

• The principle of the linear solenoid valve utilizes the fact that the force pressing on the valve spool installed

inside the coil increases nearly in proportion to the current. This allows it to produce a fluid pressure that is

proportional to this pressing force.

• The N/H (normal high) produces hydraulic control when the coil is not energized.

CVT CONTROL SYSTEM : Secondary Pressure Solenoid Valve

INFOID:0000000012200860

• The secondary pressure solenoid valve is installed to control valve.

• The secondary pressure solenoid valve controls the secondary valve. For information about the secondary

valve, refer to

TM-173, "MECHANICAL SYSTEM : Component Description"

.

• The secondary pressure solenoid valve uses the linear solenoid valve [N/H (normal high) type].

NOTE:

• The principle of the linear solenoid valve utilizes the fact that the force pressing on the valve spool installed

inside the coil increases nearly in proportion to the current. This allows it to produce a fluid pressure that is

proportional to this pressing force.

• The N/H (normal high) produces hydraulic control when the coil is not energized.

CVT CONTROL SYSTEM : Torque Converter Clutch Solenoid Valve

INFOID:0000000012200861

• The torque converter clutch solenoid valve is installed to control valve.

• The torque converter clutch solenoid valve controls the torque converter clutch control valve. For information

about the torque converter clutch control valve, refer to

TM-173, "MECHANICAL SYSTEM : Component

Description"

.

• The torque converter clutch solenoid valve utilizes a linear solenoid valve [N/L (normal low) type].

NOTE:

• The principle of the linear solenoid valve utilizes the fact that the force pressing on the valve spool installed

inside the coil increases nearly in proportion to the current. This allows it to produce a fluid pressure that is

proportional to this pressing force.

• The N/L (normal low) type does not produce hydraulic control when the coil is not energized.

CVT CONTROL SYSTEM : Lock-up Select Solenoid Valve

INFOID:0000000012200862

• The lock-up select solenoid valve is installed to control valve.

• The lock-up select solenoid valve controls the select switch valve. For information about the select switch

valve, refer to

TM-173, "MECHANICAL SYSTEM : Component Description"

.

• The lock-up select solenoid valve utilizes an ON-OFF solenoid valve.

JSDIA1831GB

COMPONENT PARTS

TM-161

< SYSTEM DESCRIPTION >

[CVT: RE0F10B]

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NOTE:

• The only operations of the valve spool installed inside the coil are pressing or not pressing the ball which

seals the hydraulic supply section into the seat. This A/T uses N/L (normal low) type.

• When voltage is not applied to the coil, the force of the pilot pressure presses the ball against the seat,

stopping the pilot pressure at that point.

• When voltage is applied to the coil, the valve is pulled in the direction of the coil, disengaging the hydraulic

seal which the ball creates. This supplies pilot pressure to the operating locations.

CVT CONTROL SYSTEM : Step Motor

INFOID:0000000012200863

The step motor changes the step with turning 4 coils ON/OFF according to the signal from TCM. As a result,

the flow of line pressure to primary pulley is changed and pulley ratio is controlled.

CVT CONTROL SYSTEM : Instruction Mode Switch

INFOID:0000000012200864

• The instruction mode switch [mode select switch and position select switch (shift-up/shift-down)] is installed in

the CVT shift selector assembly.

• The mode select switch detects the position (the main shift gate side or instruction shift gate side) of the selec-

tor lever and transmits a instruction mode signal or a not instruction mode signal to the combination meter. Then,

the TCM receives a instruction mode signal or non-instruction mode signal from the combination meter.

• The position select switch (shift-up) detects that the selector lever is shifted to the shift-up side of the instruction

shift gate and transmits a instruction mode shift up signal to the combination meter. Then, the TCM receives a

instruction mode shift up signal from the combination meter.

• The position select switch (shift-down) detects that the selector lever is shifted to the shift-down side of the

instruction shift gate and transmits a instruction mode shift down signal to the combination meter. Then, the TCM

receives a instruction mode shift down signal from the combination meter.

CVT CONTROL SYSTEM : CVT Indicator

INFOID:0000000012200865

• CVT indicator is positioned on the combination meter.

• CVT indicator turns on for a certain period of time when the ignition switch turns ON, and then turns OFF.

CVT CONTROL SYSTEM : Shift Position Indicator

INFOID:0000000012200866

TCM transmits shift position signal to combination meter via CAN communication. The actual shift position is

displayed on combination meter according to the signal.

CVT CONTROL SYSTEM : Instruction Mode Indicator

INFOID:0000000012200867

• Instruction mode indicator (A) is positioned on the combination meter.

• The instruction mode indicator illuminates when the selector lever is

operated to the instruction shift gate side. It also displays the gear

position (M1

⇔M8) when the selector lever is operated to the +

side or – side. (Operates only during driving.)

• The instruction mode indicator turns off when the selector lever is

operated to the main shift gate side.

Condition (status)

CVT indicator

Ignition switch OFF.

OFF

Ignition switch ON.

ON (Approx. 2sec.)

Condition (status)

Instruction mode indicator

Selector lever is operated to the instruction shift gate
side.

Display

Selector lever is operated to the + side or – side.

M1

⇔M8

Selector lever is operated to the main shift gate side.

Nothing displayed.

JSDIA2386ZZ