Nissan Cube. Manual - part 968

 

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Nissan Cube. Manual - part 968

 

 

TM-128

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F08B]

P0744 TORQUE CONVERTER

Is the inspection result normal?

YES

>> INSPECTION END

NO

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

TM-235,

"Exploded View"

.

CVT unit harness connector

Ground

Condition

Resistance (Approx.)

Connector

Terminal

F24

13

CVT fluid temperature: 20

°

C (68

°

F)

12.3 – 13.5 

CVT fluid temperature: 50

°

C (122

°

F)

13.7 – 15.1 

CVT fluid temperature: 80

°

C (176

°

F)

15.1 – 16.7 

P0745 PRESSURE CONTROL SOLENOID A

TM-129

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F08B]

C

E

F

G

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B

TM

N

O

P

P0745 PRESSURE CONTROL SOLENOID A

Description

INFOID:0000000009948983

• Line pressure solenoid valve is installed to control valve.
• Line pressure solenoid valve adjusts oil pump discharge pressure to optimum level according to the driving

conditions.

• The adoption of an N/H type (normal high) line pressure solenoid valve enables generation of a control oil

pressure when a voltage is not applied to the coil.

DTC Logic

INFOID:0000000009948984

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.

Drive the vehicle for 10 seconds or more.

3.

Stop the vehicle.

4.

Select “Self Diagnostic Results” in “TRANSMISSION”.

With GST

Follow the procedure “With CONSULT”.

Is “P0745” detected?

YES

>> Go to 

TM-129, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009948985

1.

CHECK LINE PRESSURE SOLENOID VALVE CIRCUIT

1.

Turn ignition switch OFF.

2.

Check resistance between TCM connector terminal and ground.

DTC

Trouble diagnosis name

DTC is detected if...

Possible cause

P0745

Pressure Control Solenoid A

• Monitor voltage value of TCM line pres-

sure solenoid valve is less than 70% of 
the target voltage value of line pressure 
solenoid valve

• Current monitor value of the Line pres-

sure solenoid valve differs from the TCM 
current command value of line pressure 
solenoid valve

• Harness or connectors

 (Line pressure solenoid valve circuit is 
open or shorted.)

• Line pressure solenoid valve

TCM connector

Ground

Condition

Resistance (Approx.)

Connector

Terminal

E18

1

CVT fluid temperature: 20

°

C (68

°

F)

5.60 – 6.60 

CVT fluid temperature: 50

°

C (122

°

F)

6.76 – 6.87 

CVT fluid temperature: 80

°

C (176

°

F)

7.47 – 7.59 

TM-130

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F08B]

P0745 PRESSURE CONTROL SOLENOID A

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-40, "Intermittent Incident"

.

NO

>> GO TO 2.

2.

CHECK LINE PRESSURE SOLENOID VALVE

1.

Disconnect CVT unit connector.

2.

Check Line pressure solenoid valve. Refer to 

TM-130, "Component Inspection (Line Pressure Solenoid

Valve)"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Line pressure solenoid valve is malfunctioning. Replace transaxle assembly. Refer to 

TM-235,

"Exploded View"

.

3.

CHECK HARNESS BETWEEN TCM AND CVT UNIT (LINE PRESSURE 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 (LINE PRESSURE 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.

Component Inspection (Line Pressure Solenoid Valve)

INFOID:0000000009948986

1.

CHECK LINE PRESSURE SOLENOID VALVE

Check resistance between CVT unit harness connector terminal and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Line pressure solenoid valve is malfunctioning. Replace transaxle assembly. Refer to 

TM-235,

"Exploded View"

.

TCM vehicle side harness connector

CVT unit vehicle side harness connector

Continuity

Connector

Terminal

Connector

Terminal

E18

1

F24

2

Existed

TCM vehicle side harness connector

Ground

Continuity

Connector

Terminal

E18

1

Not existed

CVT unit harness connector

Ground

Condition

Resistance (Approx.)

Connector

Terminal

F24

2

CVT fluid temperature: 20

°

C (68

°

F)

5.60 – 6.60 

CVT fluid temperature: 50

°

C (122

°

F)

6.76 – 6.87 

CVT fluid temperature: 80

°

C (176

°

F)

7.47 – 7.59 

P0746 PRESSURE CONTROL SOLENOID A

TM-131

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F08B]

C

E

F

G

H

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J

K

L

M

A

B

TM

N

O

P

P0746 PRESSURE CONTROL SOLENOID A

Description

INFOID:0000000009948987

• When an abnormal gear ratio is detected on the LOW side due to a low line pressure with the line pressure

solenoid valve electrically normal, this phenomenon is judged as a malfunction.

• 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:0000000009948988

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 “ENG SPEED”, “PRI SPEED” and “VEHICLE SPEED”.

4.

Drive the vehicle.

5.

Maintain the following conditions for 1 seconds or more.

6.

Stop the vehicle.

7.

Select “Self Diagnostic Results” in “TRANSMISSION”.

With GST

Follow the procedure “With CONSULT”.

Is “P0746” detected?

YES

>> Go to 

TM-131, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009948989

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 LINE PRESSURE SOLENOID VALVE

1.

Turn ignition switch OFF.

DTC

Trouble diagnosis name

DTC is detected if...

Possible cause

P0746

Pressure Control Solenoid A 
Performance/Stuck Off

TCM detects a state that gear ratio is more 
than 2.9

• Line pressure control system
• Line pressure solenoid valve
• Primary speed sensor
• Secondary speed sensor

ENG SPEED

: More than 600 rpm

PRI SPEED

: More than 500 rpm

VEHICLE SPEED

: More than 10 km/h (7 MPH)

 

 

 

 

 

 

 

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