Nissan X-Trail 32. Manual - part 2158

TM-590

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

P0744 TORQUE CONVERTER

P0744 TORQUE CONVERTER

DTC Description

INFOID:0000000010622811

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Torque converter clutch solenoid valve
• Control valve assembly
• Torque converter

FAIL-SAFE

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

DTC CONFIRMATION PROCEDURE

CAUTION:

Be careful of the driving speed.

1.

PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, turn ignition switch OFF and wait for at
least 10 seconds, then perform the next test.

>> GO TO 2.

2.

PREPARATION BEFORE OPERATION

With CONSULT

1.

Start the engine.

2.

Select “Data Monitor” in “TRANSMISSION”.

3.

Select “FLUID TEMP”.

4.

Confirm that the CVT fluid temperature is in the following range. 

With GST

1.

Start the engine.

2.

Set the CVT fluid to 20

°

C (68

°

F) or more. 

NOTE:
When the ambient temperature is 20

°

C (68

°

F), the CVT fluid usually increases to 50 to 80

°

C (122 to

176

°

F) with driving in an urban area for approximately 10 minutes. 

Is the CVT fluid 20

°

C (68

°

F) or more? 

YES

>> GO TO 3.

NO

>> 1.

Warm the transaxle. 

2.

GO TO 3.

3.

CHECK DTC DETECTION

1.

Drive the vehicle.

2.

Maintain the following conditions for 30 seconds or more.

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P0744

TORQUE CONVERTER
(Torque converter clutch circuit intermittent)

When all of the following conditions are satisfied and this state is main-
tained for 30 seconds:
• TCM power supply voltage: More than 11 V
• P0717 is not detected.
• CAN communication is normal
• Torque converter slip speed: (40+vihicle speed/2) rpm
• LU pressure: More than 0.2 MPa

FLUID TEMP

: 20

°

C (68

°

F) or more

P0744 TORQUE CONVERTER

TM-591

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

3.

Stop the vehicle.

4.

Check the first trip DTC.

Is “P0744” detected?

YES

>> Go to 

TM-591, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010622812

1.

REPLACE TRANSAXLE ASSEMBLY

Replace transaxle assembly. Refer to 

TM-704, "Removal and Installation"

.

>> WORK END

Selector lever

: “D” position

Accelerator pedal position

: 0.5/8 or more

Vehicle speed

: 40 km/h (25 MPH) or more

TM-592

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

P0746 PRESSURE CONTROL SOLENOID A

P0746 PRESSURE CONTROL SOLENOID A

DTC Description

INFOID:0000000010622813

DTC DETECTION LOGIC

NOTE:
DC stands for "DRIVING CYCLE" and indicates a series of driving cycle of "Ignition switch OFF 

→

 ON 

→

 driv-

ing 

→

 OFF".

POSSIBLE CAUSE

• Line pressure solenoid valve
• Control valve assembly

FAIL-SAFE

• 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

DTC CONFIRMATION PROCEDURE

CAUTION:

Be careful of the driving speed.

1.

PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, turn ignition switch OFF and wait for at
least 10 seconds, then perform the next test.

>> GO TO 2.

2.

CHECK DTC DETECTION

1.

Start the engine.

2.

Drive the vehicle.

3.

Maintain the following conditions for 10 seconds or more.

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P0746

PC SOLENOID A
(Pressure Control Solenoid A Performance/
Stuck Off)

The detecting condition A or detection condition B is detected twice or 
more (1 second or more later after detection of the first) in the same DC 
under the following diagnosis conditions:
• Diagnosis conditions
- Engine speed: More than 600 rpm
- Primary pulley speed: More than 450 rpm
- Idle is not being detected.

- Acceleration/deceleration speed: 

−

0.49 m/s

2

 (

−

0.05 G) or more

- The primary pulley speed experienced 300 rpm or more and the sec-

ondary pulley speed experienced 250 rpm or more at least once. 

- Secondary pulley speed: More than 150 rpm
- TCM power supply voltage: More than 11 V
• Detection condition A
- Status with the shifting ratio of the primary pulley speed/secondary pul-

ley ratio exceeding 2.981 is 0.2 sec. or more continuously. 

• Detection condition B
- Status with the shifting ratio of the primary pulley speed/secondary pul-

ley ratio exceeding 3.781 is 0.1 sec. or more continuously.

Selector lever

: “D” position

Accelerator pedal position

: 0.5/8 or more

Vehicle speed

: 40 km/h (25 MPH) or more

P0746 PRESSURE CONTROL SOLENOID A

TM-593

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

4.

Stop the vehicle.

5.

Check the first trip DTC.

Is “P0746”detected?

YES

>> Go to 

TM-593, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010622814

1.

REPLACE TRANSAXLE ASSEMBLY

Replace transaxle assembly. Refer to 

TM-704, "Removal and Installation"

.

>> WORK END