Nissan X-Trail 32. Manual - part 2160

TM-598

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

P0779 PRESSURE CONTROL SOLENOID B

P0779 PRESSURE CONTROL SOLENOID B

DTC Description

INFOID:0000000010622819

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connector (Secondary pressure solenoid valve circuit open or shorted to power supply)
• Secondary pressure solenoid valve

FAIL-SAFE

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

DTC CONFIRMATION PROCEDURE

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 5 seconds or more.

4.

Stop the vehicle.

5.

Check the first trip DTC.

Is “P0779” detected?

YES

>> Go to 

TM-598, "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:0000000010622820

1.

CHECK CIRCUIT BETWEEN TCM AND CVT UNIT

1.

Turn ignition switch OFF.

2.

Disconnect TCM connector and CVT unit connector.

3.

Check continuity between TCM harness connector terminal and CVT unit harness connector terminal. 

Is the inspection result normal?

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P0779

PC SOLENOID B
(Pressure control solenoid B Intermittent)

When all of the following conditions are satisfied and this state is main-
tained for 0.2 seconds:
• TCM power supply voltage: More than 11 V
• P0778 is not detected
• TCM judges that solenoid valve circuit is open or shorted to power sup-

ply.

Selector lever

: “D” position

Vehicle speed

: 40 km/h (25 MPH) or more

TCM

CVT unit

Continuity

Connector

Terminal

Connector

Terminal

F119

39

F127

3

Existed

P0779 PRESSURE CONTROL SOLENOID B

TM-599

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

YES 

>> GO TO 2.

NO

>> Repair or replace damaged parts.

2.

CHECK SECONDARY PRESSURE SOLENOID VALVE CIRCUIT

Check continuity between CVT unit harness connector terminal and ground. 

Is the inspection result normal?

YES >> INSPECTION 

END

NO

>> There is malfunction of secondary pressure solenoid valve. Replace transaxle assembly. Refer to

TM-704, "Removal and Installation"

.

CVT unit

—

Condition

Resistance

Connector

Terminal

F250

3

Ground

CVT fluid temperature: 20

°

C (68

°

F)

5.5 – 7.0 

Ω

CVT fluid temperature: 50

°

C (122

°

F)

6.0 – 8.0 

Ω

CVT fluid temperature: 80

°

C (176

°

F)

6.5 – 8.5 

Ω

TM-600

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

P0826 UP AND DOWN SHIFT SW

P0826 UP AND DOWN SHIFT SW

DTC Description

INFOID:0000000010622821

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connector (Manual mode switch circuit are open or shorted)
• Manual mode switch

FAIL-SAFE

Manual mode is not activated

DTC CONFIRMATION PROCEDURE

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 (PART 1)

With CONSULT

1.

Start the engine.

2.

Shift the selector lever to “D” position and wait for 1 second or more.

3.

Select “Self Diagnostic Results” in “TRANSMISSION”.

Is “P0826” detected?

YES

>> Go to 

TM-601, "Diagnosis Procedure"

.

NO

>> GO TO 3.

3.

CHECK DTC DETECTION (PART 2)

With CONSULT

1.

Shift the selector lever to manual shift gate and wait for 1 second or more.

2.

Select “Self Diagnostic Results” in “TRANSMISSION”.

Is “P0826” detected?

YES

>> Go to 

TM-601, "Diagnosis Procedure"

.

NO

>> GO TO 4.

4.

CHECK DTC DETECTION (PART 3)

With CONSULT

1.

Shift the selector lever to “UP side (+ side)” and wait for 1 second or more.

2.

Select “Self Diagnostic Results” in “TRANSMISSION”.

Is “P0826” detected?

YES

>> Go to 

TM-601, "Diagnosis Procedure"

.

NO

>> GO TO 5.

5.

CHECK DTC DETECTION (PART 4)

With CONSULT

1.

Shift the selector lever to “DOWN side (

−

 side)” and wait for 1 second or more.

2.

Select “Self Diagnostic Results” in “TRANSMISSION”.

Is “P0826” detected?

YES

>> Go to 

TM-601, "Diagnosis Procedure"

.

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P0826

UP/DOWN SHIFT SWITCH
(Up and Down Shift Switch Circuit)

TCM monitors manual mode, non-manual mode, up or down switch sig-
nal, and detects as irregular when impossible input pattern occurs 1 sec-
ond or more.

P0826 UP AND DOWN SHIFT SW

TM-601

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010622822

1.

CHECK DTC (COMBINATION METER)

With CONSULT

1.

Turn ignition switch ON.

2.

Select “Self Diagnostic Results” in “METER/M&A”.

Is any DTC detected?

YES

>> Check DTC detected item. Refer to 

MWI-105, "DTC Index"

.

NO

>> GO TO 2.

2.

CHECK MANUAL MODE SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect CVT shift selector connector.

3.

Turn ignition switch ON.

4.

Check voltage between CVT shift selector harness connector terminal and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 4.

3.

CHECK MANUAL MODE SWITCH

1.

Turn ignition switch OFF.

2.

Check manual mode switch. Refer to 

TM-602, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace damaged parts.

4.

CHECK CIRCUIT BETWEEN CVT SHIFT SELECTOR AND COMBINATION METER

1.

Turn ignition switch OFF.

2.

Disconnect combination meter connector.

3.

Check continuity between CVT shift selector harness connector terminals and combination meter harness
connector terminals.

+

–

Condition

Voltage

(Approx.)

CVT shift selector

Connector

Terminal

M52

7

Ground

Ignition switch: ON

12 V

Ignition switch: OFF

0 V

8

Ignition switch: ON

12 V

Ignition switch: OFF

0 V

9

Ignition switch: ON

12 V

Ignition switch: OFF

0 V

11

Ignition switch: ON

12 V

Ignition switch: OFF

0 V

CVT shift selector

Combination meter

Continuity

Connector

Terminal

Connector

Terminal

M52

7

M34

30

Existed

8

33

9

32

11

31