Nissan Cube. Manual - part 971

 

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Nissan Cube. Manual - part 971

 

 

TM-140

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F08B]

P0841 TRANSMISSION FLUID PRESSURE SEN/SW A

Is the inspection result normal?

YES

>> GO TO 4.

NO

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

TM-235,

"Exploded View"

.

4.

CHECK SECONDARY PRESSURE SOLENOID VALVE

Check secondary pressure solenoid valve. Refer to 

TM-140, "Component Inspection (Secondary Pressure

Solenoid Valve)"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

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

TM-

235, "Exploded View"

.

5.

CHECK STEP MOTOR SYSTEM

Check step motor system. Refer to 

TM-157, "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 (Line Pressure Solenoid Valve)

INFOID:0000000009949005

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"

.

Component Inspection (Secondary Pressure Solenoid Valve)

INFOID:0000000009949006

1.

CHECK SECONDARY PRESSURE SOLENOID VALVE

Check resistance between CVT unit harness connector terminal and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

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

TM-

235, "Exploded View"

.

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 

CVT unit harness connector

Ground

Condition

Resistance (Approx.)

Connector

Terminal

F24

3

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 

P0868 TRANSMISSION FLUID PRESSURE

TM-141

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F08B]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

P0868 TRANSMISSION FLUID PRESSURE

Description

INFOID:0000000009949007

Secondary pressure solenoid valve regulates the secondary pressure to suit the driving condition in response
to a signal sent from the TCM.

DTC Logic

INFOID:0000000009949008

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”, “BRAKESW” and “VEHICLE SPEED”.

4.

Drive the vehicle.

5.

Maintain the following conditions for 30 seconds or more.

6.

Stop the vehicle.

7.

Select “Self Diagnostic Results” in “TRANSMISSION”.

Is “P0868” detected?

YES

>> Go to 

TM-141, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009949009

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

P0868

Transmission Fluid Pressure 
Low

TCM detects that secondary pressure is ex-
cessively low against target secondary 
pressure while the vehicle is in ordinary 
driving

• Harness or connectors

(Sensor circuit is open or shorted.)

• Secondary pressure solenoid valve sys-

tem

• Line pressure control system
• Secondary pressure sensor

RANGE

: D

ATF TEMP SEN

: 2.41 V or less

ACC PEDAL OPEN

: 0.5/8 – 1.0/8

BRAKESW

: Off

VEHICLE SPEED

: More than 40 km/h (25 MPH)

TM-142

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F08B]

P0868 TRANSMISSION FLUID PRESSURE

2.

Disconnect CVT unit harness connector.

3.

Check line pressure solenoid valve. Refer to 

TM-142, "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 SECONDARY PRESSURE SOLENOID VALVE

Check secondary pressure solenoid valve. Refer to 

TM-142, "Component Inspection (Secondary Pressure

Solenoid Valve)"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

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

TM-

235, "Exploded View"

.

4.

CHECK SECONDARY PRESSURE SENSOR SYSTEM

Check secondary pressure sensor system. Refer to 

TM-137, "DTC Logic"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace damaged parts.

5.

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 (Line Pressure Solenoid Valve)

INFOID:0000000009949010

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"

.

Component Inspection (Secondary Pressure Solenoid Valve)

INFOID:0000000009949011

1.

CHECK SECONDARY PRESSURE SOLENOID VALVE

Check resistance between CVT unit harness connector terminal and ground.

Is the inspection result normal?

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 (122F)

6.76 – 6.87 

CVT fluid temperature: 80

°

C (176

°

F)

7.47 – 7.59 

CVT unit harness connector

Ground

Condition

Resistance (Approx.)

Connector

Terminal

F24

3

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 

P0868 TRANSMISSION FLUID PRESSURE

TM-143

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F08B]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

YES

>> INSPECTION END

NO

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

TM-

235, "Exploded View"

.

 

 

 

 

 

 

 

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