Nissan Cube. Manual - part 967

TM-124

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F08B]

P0740 TORQUE CONVERTER

7.

Select “Self Diagnostic Results” in “TRANSMISSION”.

With GST

Follow the procedure “With CONSULT”.
Is “P0740” detected?

YES

>> Go to 

TM-124, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009948976

1.

CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE CIRCUIT

1.

Turn ignition switch OFF.

2.

Check resistance between TCM connector terminal and ground.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-40, "Intermittent Incident"

.

NO

>> GO TO 2.

2.

CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE

1.

Disconnect CVT unit connector.

2.

Check torque converter clutch solenoid valve. Refer to 

TM-125, "Component Inspection (Torque Con-

verter Clutch Solenoid Valve)"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Torque converter clutch solenoid valve is malfunctioning. Replace transaxle assembly. Refer to

TM-235, "Exploded View"

.

3.

CHECK HARNESS BETWEEN TCM AND CVT UNIT (TORQUE CONVERTER CLUTCH SOLENOID

VALVE) (PART 1)

1.

Disconnect TCM connector.

2.

Check continuity between TCM vehicle side harness connector terminal and CVT unit vehicle side har-
ness connector terminal.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace damaged parts.

4.

CHECK HARNESS BETWEEN TCM AND CVT UNIT (TORQUE CONVERTER CLUTCH SOLENOID

VALVE) (PART 2)

Check continuity between TCM vehicle side harness connector terminal and ground.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-40, "Intermittent Incident"

.

NO

>> Repair or replace damaged parts.

TCM connector

Ground

Condition

Resistance (Approx.)

Connector

Terminal

E18

3

CVT fluid temperature: 20

°

C (68

°

F)

5.60 – 6.60 

Ω

CVT fluid temperature: 50

°

C (122

°

F)

6.76 – 6.87 

Ω

CVT fluid temperature: 80

°

C (176

°

F)

7.47 – 7.59 

Ω

TCM vehicle side harness connector

CVT unit vehicle side harness connector

Continuity

Connector

Terminal

Connector

Terminal

E18

3

F24

12

Existed

TCM vehicle side harness connector

Ground

Continuity

Connector

Terminal

E18

3

Not existed

P0740 TORQUE CONVERTER

TM-125

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F08B]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

Component Inspection (Torque Converter Clutch Solenoid Valve)

INFOID:0000000009948977

1.

CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE

Check resistance between CVT unit harness connector terminal and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Torque converter clutch solenoid valve is malfunctioning. Replace transaxle assembly. Refer to

TM-235, "Exploded View"

.

CVT unit harness connector

Ground

Condition

Resistance (Approx.)

Connector

Terminal

F24

12

CVT fluid temperature: 20

°

C (68

°

F)

5.60 – 6.60 

Ω

CVT fluid temperature: 50

°

C (122

°

F)

6.76 – 6.87 

Ω

CVT fluid temperature: 80

°

C (176

°

F)

7.47 – 7.59 

Ω

TM-126

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F08B]

P0744 TORQUE CONVERTER

P0744 TORQUE CONVERTER

Description

INFOID:0000000009948978

• This is detected when torque converter clutch is not engaged under an electrically normal condition of torque

converter clutch solenoid valve.

• This DTC is not caused by an electrical malfunction (circuit open or short) but is caused by a mechanical

malfunction (control valve clogging, solenoid valve sticking, and others).

DTC Logic

INFOID:0000000009948979

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION:

Always drive vehicle at a safe speed.

1.

PRECONDITIONING

Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1.

Start the engine.

2.

Select “Data Monitor” in “TRANSMISSION”.

3.

Select “RANGE”, “ATF TEMP SEN”, “ACC PEDAL OPEN” and “VEHICLE SPEED”.

4.

Drive the vehicle.

5.

Maintain the following conditions for 10 seconds or more.

6.

Stop the vehicle.

7.

Select “Self Diagnostic Results” in “TRANSMISSION”.

With GST

Follow the procedure “With CONSULT”.

Is “P0744” detected?

YES

>> Go to 

TM-126, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009948980

1.

CHECK LINE PRESSURE

Perform line pressure test. Refer to 

TM-209, "Inspection and Judgment"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace damaged parts. Refer to 

TM-209, "Inspection and Judgment"

.

2.

CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE

DTC

Trouble diagnosis name

DTC is detected if...

Possible cause

P0744

Torque Converter Clutch Cir-
cuit Intermittent

Torque converter slip speed is more than a 
certain value (40 rpm + vehicle speed/2) 
while TCM is in lock-up command state

• Hydraulic control circuit
• Torque converter clutch solenoid valve
• Lock-up select solenoid valve

RANGE

: D

ATF TEMP SEN

: 2.03 V or less

ACC PEDAL OPEN

: 0.0/8 – 1.0/8

VEHICLE SPEED

: More than 40 km/h (25 MPH)

P0744 TORQUE CONVERTER

TM-127

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F08B]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

1.

Turn ignition switch OFF.

2.

Disconnect CVT unit connector.

3.

Check torque converter clutch solenoid valve. Refer to 

TM-127, "Component Inspection (Torque Con-

verter Clutch Solenoid Valve)"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Torque converter clutch solenoid valve is malfunctioning. Replace transaxle assembly. Refer to

TM-235, "Exploded View"

.

3.

CHECK LOCK-UP SELECT SOLENOID VALVE

Check lock-up select solenoid valve. Refer to 

TM-127, "Component Inspection (Lock-up Select Solenoid

Valve)"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Lock-up select solenoid valve is malfunctioning. Replace transaxle assembly. Refer to 

TM-235,

"Exploded View"

.

4.

CHECK PRIMARY SPEED SENSOR SYSTEM

Check primary speed sensor system. Refer to 

TM-116, "DTC Logic"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace damaged parts.

5.

CHECK SECONDARY SPEED SENSOR SYSTEM

Check secondary speed sensor system. Refer to 

TM-119, "DTC Logic"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace damaged parts.

6.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace transaxle assembly. Refer to 

TM-235, "Exploded View"

.

NO

>> Repair or replace damaged parts.

Component Inspection (Torque Converter Clutch Solenoid Valve)

INFOID:0000000009948981

1.

CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE

Check resistance between CVT unit harness connector terminal and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Torque converter clutch solenoid valve is malfunctioning. Replace transaxle assembly. Refer to

TM-235, "Exploded View"

.

Component Inspection (Lock-up Select Solenoid Valve)

INFOID:0000000009948982

1.

CHECK LOCK-UP SELECT SOLENOID VALVE

Check resistance between CVT unit harness connector terminal and ground.

CVT unit harness connector

Ground

Condition

Resistance (Approx.)

Connector

Terminal

F24

12

CVT fluid temperature: 20

°

C (68

°

F)

5.60 – 6.60 

Ω

CVT fluid temperature: 50

°

C (122

°

F)

6.76 – 6.87 

Ω

CVT fluid temperature: 80

°

C (176

°

F)

7.47 – 7.59 

Ω