Qashqai J11. Transaxle & Transmission

TM-450

< SYSTEM DESCRIPTION >

[CVT: RE0F10G]

SYSTEM

DTC

Vehicle behavior

Conditions of vehicle

P062F

• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

—

P0705

• Shift position indicator on combination meter is not dis-

played

• Selector shock is large
• Start is slow
• Acceleration is slow
• Lock-up is not performed
• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

—

P0706

• Shift position indicator on combination meter is not dis-

played

—

P0712

• Start is slow
• Acceleration is slow

Engine coolant temperature when engine start:
Temp.

≥

C (50

• Selector shock is large
• Start is slow
• Acceleration is slow

Engine coolant temperature when engine start:

−

C (

−

≤

Temp. < 10

C (50

• Selector shock is large
• Start is slow
• Acceleration is slow

Engine coolant temperature when engine star:
Temp. <

−

C (

−

• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

—

P0713

• Start is slow
• Acceleration is slow

Engine coolant temperature when engine start:
Temp.

≥

C (50

• Selector shock is large
• Start is slow
• Acceleration is slow

Engine coolant temperature when engine start:

−

C (

−

≤

Temp. < 10

C (50

• Selector shock is large
• Start is slow
• Acceleration is slow

Engine coolant temperature when engine star:
Temp. <

−

C (

−

• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

—

P0715

• Start is slow
• Acceleration is slow
• Lock-up is not performed
• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

—

P0717

—

SYSTEM

TM-451

< SYSTEM DESCRIPTION >

[CVT: RE0F10G]

P0740

—

P0743

—

P0744

• Start is slow
• Acceleration is slow
• Lock-up is not performed

—

P0746

—

P0776

• Selector shock is large
• Start is slow
• Acceleration is slow
• Lock-up is not performed
• Vehicle speed is not increased

When a malfunction occurs on the low oil pressure side

• Selector shock is large
• Start is slow
• Acceleration is slow
• Lock-up is not performed

When a malfunction occurs on the high oil pressure side

P0778

• Selector shock is large
• Start is slow
• Acceleration is slow
• Lock-up is not performed

—

P0779

• Selector shock is large
• Start is slow
• Acceleration is slow
• Lock-up is not performed

—

P0826

Manual mode is not activated

P0841

• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

—

P0847

• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

—

P0848

• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

—

P084C

• Not changed from normal driving

P084D

• Not changed from normal driving

P0863

—

DTC

Vehicle behavior

Conditions of vehicle

TM-452

< SYSTEM DESCRIPTION >

[CVT: RE0F10G]

SYSTEM

P0890

• Selector shock is large
• Start is slow
• Acceleration is slow
• Lock-up is not performed
• Vehicle speed is not increased
• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

P0962

—

P0963

—

P0965

When a malfunction occurs on the low oil pressure side

• Selector shock is large
• Lock-up is not performed
• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

When a malfunction occurs on the high oil pressure side

P0966

—

P0967

—

P1586

• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

—

P1588

• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

—

P188E

• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay
• When the vehicle is in stop/start system operation and

the engine stops, restart the engine immediately

—

DTC

Vehicle behavior

Conditions of vehicle

SYSTEM

TM-453

< SYSTEM DESCRIPTION >

[CVT: RE0F10G]

P188F

• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay
• When the vehicle is in stop/start system operation and

the engine stops, restart the engine immediately

—

P1890

• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay
• When the vehicle is in stop/start system operation and

the engine stops, restart the engine immediately

—

P2765

—

P2813

• Selector shock is large
• Start is slow
• Acceleration is slow
• Vehicle speed is not increased
• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

When a malfunction occurs on the low oil pressure side

• Selector shock is large
• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

When a malfunction occurs on the high oil pressure side

P2814

• Selector shock is large
• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

—

P2815

• Selector shock is large
• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

—

U0073

—

U0100

—

U0140

• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

—

U0141

• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

—

U0155

• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

—

DTC

Vehicle behavior

Conditions of vehicle

TM-454

< SYSTEM DESCRIPTION >

[CVT: RE0F10G]

SYSTEM

CVT CONTROL SYSTEM : Protection Control

INFOID:0000000010354550

The TCM becomes the protection control status temporarily to protect the safety when the safety of TCM and
transmission is lost. It automatically returns to the normal status if the safety is secured.
The TCM has the following protection control.

CONTROL FOR WHEEL SPIN

TORQUE IS REDUCED WHEN DRIVING WITH THE REVERSE GEAR

CONTROL WHEN FLUID TEMPERATURE IS HIGH

REVERSE PROHIBIT CONTROL

U0300

—

U1000

• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

—

U110F

• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

—

U1111

• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

—

U1117

• Stop/start system prohibited
• Restart the engine during the stop/start system operation
• Turn OFF the electric oil pump relay

—

DTC

Vehicle behavior

Conditions of vehicle

Control

When a wheel spin is detected, the engine output and gear ratio are limited and the line pressure is increased.
Limits engine output when a wheel spin occurs in any of right and left drive wheels.

Vehicle behavior in
control

If the accelerator is kept depressing during wheel spin, the engine revolution and vehicle speed are limited to
a certain degree.

Normal return condi-
tion

Wheel spin convergence returns the control to the normal control.

Control

Engine output is controlled according to a vehicle speed while reversing the vehicle.

Vehicle behavior in
control

Power performance may be lowered while reversing the vehicle.

Normal return condi-
tion

Torque returns to normal by positioning the selector lever in a range other than “R” position.

Control

When the CVT fluid temperature is high, the gear shift permission maximum revolution and the maximum
torque are reduced than usual to prevent increase of the oil temperature.

Vehicle behavior in
control

Power performance may be lowered, compared to normal control.

Normal return condi-
tion

The control returns to the normal control when CVT fluid temperature is lowered.

Control

The reverse brake is controlled to avoid becoming engaged when the selector lever is set in “R” position while
driving in forward direction at more than the specified speed.

SYSTEM

TM-455

< SYSTEM DESCRIPTION >

[CVT: RE0F10G]

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

SYSTEM

TM-457

< SYSTEM DESCRIPTION >

[CVT: RE0F10G]

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

SYSTEM

TM-459

< SYSTEM DESCRIPTION >

[CVT: RE0F10G]

SELECT CONTROL

SELECT CONTROL : System Description

INFOID:0000000010245551

SYSTEM DIAGRAM

DESCRIPTION

Based on accelerator pedal angle, engine speed, primary pulley speed, and the input speed, the optimum
operating pressure is set to reduce impact of a selector lever operation while shifting from “N” (“P”) to “D” (“R”)
position.

LOCK-UP CONTROL

LOCK-UP CONTROL : System Description

INFOID:0000000010245552

SYSTEM DIAGRAM

JSDIA5273GB

JSDIA3711GB

TM-460

< SYSTEM DESCRIPTION >

[CVT: RE0F10G]

SYSTEM

DESCRIPTION

• Controls for improvement of the transmission efficiency by engaging the torque converter clutch in the

torque converter and eliminating slip of the converter. Achieves comfortable driving with slip control of the
torque converter clutch.

• The oil pressure feed circuit for the torque converter clutch piston chamber is connected to the torque con-

verter clutch control valve. The torque converter clutch control valve is switched by the torque converter
clutch solenoid valve with the signal from TCM. This controls the oil pressure circuit, which is supplied to the
torque converter clutch piston chamber, to the release side or engagement side.

• If the CVT fluid temperature is low or the vehicle is in fail-safe mode due to malfunction, lock-up control is

prohibited.

Lock-up engagement

In lock-up engagement, the torque converter clutch solenoid valve makes the torque converter clutch control
valve locked up to generate the lock-up apply pressure. This pushes the torque converter clutch piston for
engagement.

Lock-up release condition

In lock-up release, the torque converter clutch solenoid valve makes the torque converter clutch control valve
non-locked up to drain the lock-up apply pressure. This does not engage the torque converter clutch piston.

ECO MODE CONTROL

ECO MODE CONTROL : System Description

INFOID:0000000010380737

• Driving mode that selects the shift schedule with priority on fuel economy which gives low engine revolution.
• For details on ECO mode control, refer to

DMS-6, "ECO MODE CONTROL : System Description"

• The gear shift line is not changed with the control mode change for the following conditions:
- When the selector lever is in “M” position.
- When the selector lever is in “Ds” position.

FAIL-SAFE

JSDIA4123GB

SYSTEM

TM-461

< SYSTEM DESCRIPTION >

[CVT: RE0F10G]

If a malfunction occurs in the system of CVT during ECO mode, the ECO mode indicator turns OFF and the
control switches to the normal mode control.

STOP/START SYSTEM

STOP/START SYSTEM : System Description

INFOID:0000000010304582

• In the stop/start system, ECM performs integrated control based on the information from control units, sen-

sors and switches. For information, refer to

EC9-39, "STOP/START SYSTEM : System Description (M/T

models)"

• stop/start system operation OK is evaluated based on signals from sensors and switches.
• When stop/start system operation OK is determined, stop/start enable OK signal is sent to ECM through

CAN communication.

• stop/start readiness signal is received from ECM through CAN communication and the electric oil pump is

driven based on the signal.

• The electric oil pump relay is turned ON to prepare operation of the electric oil pump.
• The electric oil pump is driven in duty control.

STOP/START OPERATION PERMISSION CONDITION EVALUATED BY TCM

When TCM detects the vehicle status and stop/start system operation OK is determined, stop/start enable sig-
nal is sent to ECM through CAN communication.

TCM INDICATION CHARACTERISTICS

Item

Description

Permission conditions

Transmission range switch

Selector lever position

“P”, “N”, or “D” position

G sensor

Gradient

14%

CVT fluid temperature sensor

CVT fluid temperature

25 – 110

Electric oil pump

Malfunction

Normal

Interval time

5 seconds or more from cancellation of previous stop/
start system operation

Secondary pressure

Control oil pressure

0.03 MPa or more

TCM indication signal (Duty)

Condition

0 – 5%

Disconnection or battery short-circuit

5 – 15%

Indicating stop of electric oil pump

15 – 85%

Indicating operation of electric oil pump

85 – 95%

Indicating operation of electric oil pump (Maximum power)

95 – 100%

Short to ground

ON BOARD DIAGNOSTIC (OBD) SYSTEM

TM-463

< SYSTEM DESCRIPTION >

[CVT: RE0F10G]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

Description

INFOID:0000000010245556

This is an on board diagnosis system which records diagnosis information related to the exhaust gases. It
detects malfunctions related to sensors and actuators. The malfunctions are indicated by means of the mal-
function indicator lamp (MIL) and are stored as DTC in the ECU memory. The diagnosis information can be
checked using a diagnosis tool (GST: Generic Scan Tool).

Function of OBD

INFOID:0000000010245557

The GST is connected to the diagnosis connector on the vehicle and communicates with the on-board control
units to perform diagnosis. The diagnosis connector is the same as for CONSULT. Refer to

GI-49, "Descrip-

tion"

TM-464

< SYSTEM DESCRIPTION >

[CVT: RE0F10G]

DIAGNOSIS SYSTEM (TCM)

DIAGNOSIS SYSTEM (TCM)

DIAGNOSIS DESCRIPTION

DIAGNOSIS DESCRIPTION : 1 Trip Detection Diagnosis and 2 Trip Detection Diagno-
sis

INFOID:0000000010245558

NOTE:
“Start the engine and turn OFF the ignition switch after warm-up.” This is defined as 1 trip.

1 TRIP DETECTION DIAGNOSIS

When initial malfunction is detected, TCM memorizes DTC. In these diagnoses, some illuminate MIL and
some do not. Refer to

TM-485, "DTC Index"

2 TRIP DETECTION DIAGNOSIS

When initial malfunction is detected, TCM memorizes DTC of the 1st trip. MIL does not light at this stage. <1
trip>
If the same malfunction is detected again in next driving, TCM memorizes DTC. When DTC is memorized, MIL
lights. <2 trip>
“Trip” of the “2 trip detection diagnosis” indicates the driving mode that executes self-diagnosis during driving.

: Check possible

—: Check not possible

DIAGNOSIS DESCRIPTION : DTC and DTC of 1st Trip

INFOID:0000000010245559

2 TRIP DETECTION DIAGNOSIS THAT ILLUMINATES MIL

• The DTC number of the 1st trip is the same as the DTC number.
• When a malfunction is detected at the 1st trip, TCM memorizes DTC of the 1st trip. MIL does not light at this

stage. If the same malfunction is not detected at the 2nd trip (conforming to necessary driving conditions),
DTC at the 1st trip is erased from TCM. If the same malfunction is detected at the 2nd trip, TCM memorizes
DTC and MIL lights at the same time.

• The DTC of the 1st trip is specified in Service $01 of SAE J1979/ISO 15031-5. Since detection of DTC at the

1st trip does not illuminate MIL, warning for a problem is not given to a driver.

• For procedure to delete DTC and 1st trip DTC from TCM, refer to

TM-466, "CONSULT Function"

• If DTC of the 1st trip is detected, it is necessary to check the cause according to the “Diagnosis flow”. Refer

TM-497, "Work Flow"

DIAGNOSIS DESCRIPTION : Malfunction Indicator Lamp (MIL)

INFOID:0000000010245560

• TCM not only detects DTC, but also sends the MIL signal to ECM through CAN communication. ECM sends

the MIL signal to the combination meter through CAN communication according to the signal, and illumi-
nates MIL.

• For malfunction indicator lamp (MIL) description, refer to

EC9-23, "Malfunction Indicator Lamp"

DIAGNOSIS DESCRIPTION : Counter System

INFOID:0000000010245561

RELATION BETWEEN DTC AT 1ST TRIP/DTC/MIL AND DRIVING CONDITIONS (FOR 2 TRIP DE-
TECTION DIAGNOSIS THAT ILLUMINATES MIL)

• When initial malfunction is detected, TCM memorizes DTC of the 1st trip. MIL does not light at this stage.
• If the same malfunction is detected at the 2nd trip, TCM memorizes DTC and MIL lights at the same time.
• Then, MIL goes after driving the vehicle for 3 trips under “Driving condition B” without malfunction.
• DTC is displayed until 40 trips of “Driving condition A” are satisfied without detecting the same malfunction.

DTC is erased when 40 trips are satisfied.

Item

DTC at the 1st trip

DTC

MIL

Display at the

1st trip

Display at the

2nd trip

Display at the

1st trip

Display at the

2nd trip

Illumination at

the 1st trip

Illumination at

the 2nd trip

1 trip detection diagnosis
(Refer to

TM-485, "DTC Index"

)

—

2 trip detection diagnosis
(Refer to

TM-485, "DTC Index"

)

—

DIAGNOSIS SYSTEM (TCM)

TM-465

< SYSTEM DESCRIPTION >

[CVT: RE0F10G]

• When the self-diagnosis result is acceptable at the 2nd trip (conforming to driving condition B), DTC of the

1st trip is erased.

COUNTER SYSTEM LIST

DRIVING CONDITION

Driving condition A

Driving condition A is the driving condition that provides warm-up.
In specific, count-up is performed when all of the following conditions are satisfied.
• Engine speed is 400 rpm or more.
• After start of the engine, the water temperature increased by 20

C (36

F) or more.

• Water temperature was 70

C (158

F) or more.

• The ignition switch was changed from ON to OFF.
NOTE:
• If the same malfunction is detected regardless of the driving condition, reset the A counter.
• When the above is satisfied without detecting the same malfunction, count up the A counter.
• When MIL goes off due to the malfunction and the A counter reaches 40, the DTC is erased.

Driving condition B

Driving condition B is the driving condition that performs all diagnoses once.
In specific, count-up is performed when all of the following conditions are satisfied.
• Engine speed is 400 rpm or more.
• Water temperature was 70

C (158

F) or more.

• In closed loop control, vehicle speed of 70 – 120 km/h (43 – 75 MPH) continued for 60 seconds or more.
• In closed loop control, vehicle speed of 30 – 60 km/h (19 – 37 MPH) continued for 10 seconds or more.
• In closed loop control, vehicle speed of 4 km/h (2 MPH) or less and idle determination ON continued for 12

seconds or more.

• After start of the engine, 22 minutes or more have passed.
• The condition that the vehicle speed is 10 km/h (6 MPH) or more continued for 10 seconds or more in total.
• The ignition switch was changed from ON to OFF.
NOTE:
• If the same malfunction is detected regardless of the driving condition, reset the B counter.
• When the above is satisfied without detecting the same malfunction, count up the B counter.
• When the B counter reaches 3 without malfunction, MIL goes off.
• When the B counter is counted once without detecting the same malfunction after TCM memorizes DTC of

the 1st trip, DTC of the 1st trip is erased.

Item

Driving condition

Trip

MIL (OFF)

DTC (clear)

DTC at 1st trip (clear)

Qashqai J11. Transaxle & Transmission - part 29