Nissan Qashqai J11. Manual - part 720

SYSTEM

TM-455

< SYSTEM DESCRIPTION >

[CVT: RE0F10G]

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LINE PRESSURE CONTROL

LINE PRESSURE CONTROL : System Description

INFOID:0000000010245549

SYSTEM DIAGRAM

DESCRIPTION

Highly accurate line pressure control and secondary pressure control reduces friction for improvement of fuel
economy. 

Normal Oil Pressure Control

Appropriate line pressure and secondary pressure suitable for driving condition are determined based on the
accelerator pedal position, engine speed, primary pulley (input) speed, secondary pulley (output) speed, vehi-
cle speed, input torque, stop lamp switch signal, transmission range switch signal, lock-up signal, power volt-
age, target shift ratio, oil temperature, oil pressure, and manual mode signal.

Secondary Pressure Feedback Control

In normal oil pressure control and oil pressure control in shifting, highly accurate secondary pressure is deter-
mined by detecting the secondary pressure using an oil pressure sensor and by feedback control. 

SHIFT CONTROL

SHIFT CONTROL : System Description

INFOID:0000000010245550

SYSTEM DIAGRAM

Vehicle behavior in 
control 

If the selector lever is put at “R” position when driving with the forward gear, the gear becomes neutral, not 
reverse. 

Normal return condi-
tion

The control returns to normal control when the vehicle is driven at low speeds. (The reverse brake becomes 
engaged.)

JSDIA4122GB

TM-456

< SYSTEM DESCRIPTION >

[CVT: RE0F10G]

SYSTEM

DESCRIPTION

To select the gear ratio that can give the driving force to meet driver's intent or vehicle situation, the vehicle
driving condition such as vehicle speed or accelerator pedal position is detected and the most appropriate
gear ratio is selected and the shifting method before reaching the speed is determined. The information is out-
put to the primary pressure solenoid valve and secondary pressure solenoid valve to control the line pressure
input/output to the pulley, to determine the pulley (movable pulley) position and to control the gear position. 

Shift Position Function

• D Position (Normal)

JSDIA4101GB

SYSTEM

TM-457

< SYSTEM DESCRIPTION >

[CVT: RE0F10G]

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Gear shifting is performed in all shifting ranges from the lowest to
the highest gear ratio. 

• Ds  Position

Pressing down the accelerator pedal allows to drive the vehicle
with a feeling of A/T-like gear shifting.. 

• M Position (Manual Mode)

When the selector lever is put in the manual shift gate side, the
fixed changing gear line is set. By moving the selector lever to +
side or .side, the manual mode switch is changed over, and shift
change like M/T becomes possible following the changing gear set
line step by step.

- Manual Mode Information

The TCM transmits the manual mode shift refusal signal to the combination meter if the TCM refuses the
transmission from the driving status of vehicle when the selector lever shifts to UP side (+ side) or DOWN
side (

−

side). The combination meter blinks shift indicator on the combination meter and sounds the buzzer to

indicate the driver that the shifting is not performed when receiving this signal. However, the TCM does not
transmit the manual mode shift refusal signal in the conditions as per the following.

• When the selector lever shifts to DOWN side (

−

side) while driving in M1.

• When the selector lever shifts to UP (+ side) side while driving in M7.

Blipping Control

Using engine torque, the blipping control enables a faster and more responsive gear shifting by compensating
inertia torque generated from the rotational change during gear shifting in real time.

Operation 

• The blipping control is activated when shifting up/down in manual mode or when shifting up/down in “Ds”

position.
NOTE:
The blipping control is not activated when the vehicle is in the following conditions:
• When CAN communication is abnormal.
• During the retard inhibit signal transmission from ECM within the engine-CVT integrated control.
• Engine coolant temperature is less than 20

°

C (68

°

F).

SCIA1953E

JSDIA3708GB

JSDIA4104GB

TM-458

< SYSTEM DESCRIPTION >

[CVT: RE0F10G]

SYSTEM

• CVT fluid temperature is more than 120

°

C (248

°

F).

• Vehicle speed is less than 20 km/h (13 MPH).
• When ABS, TCS or VDC is active.
• During wheel spin.

• ECM selects blipping control or normal shift control according to the gear position, the selector lever posi-

tion, etc.

• The blipping control is activated when ECM judges it controllable after receiving a control permit signal from

TCM.

• ECM controls engine torque, based on generated inertia torque.

Hill Climbing And Descending Control

If a downhill is detected with the accelerator pedal is released, the system performs downshift to increase the
engine brake force so that vehicle may not be accelerated more than necessary. If a climbing hill is detected,
the system improves the acceleration performance in re-acceleration by limiting the gear shift range on the
high side. 
NOTE:
For engine brake control on a downhill, the control can be stopped with CONSULT. 

Control In Acceleration

From change of the vehicle speed or accelerator pedal position, the acceleration request level of the driver or
driving scene is evaluated. In start or acceleration during driving, the gear shift characteristics with linearity of
revolution increase and vehicle speed increase are gained to improve the acceleration feel.
• When the accelerator pedal is depressed 4/8 or more in D position, CVT performs step shifting to allow the

vehicle speed and engine speed to increase simultaneously. This improves the feel of acceleration and
enables the fuel economy by preventing unnecessary rise in engine speed, compared to the conventional
shifting.

JSDIA2841GB

JSDIA2060GB