Qashqai J11. Transaxle & Transmission - part 35

Is the inspection result normal?

YES

>> Replace transaxle assembly. Refer to

TM-548, "Diagnosis Procedure"

>> Repair or replace the malfunction items.

P0776 PRESSURE CONTROL SOLENOID B

TM-547

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

P0776 PRESSURE CONTROL SOLENOID B

DTC Logic

INFOID:0000000010245621

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

Possible cause

P0776

PC SOLENOID B
(Pressure Control Solenoid
“B” Performance/Stuck Off)

When any of 1 or 2 is satisfied and this state
is maintained for 10 seconds:
1.

When all of the following conditions are
satisfied:

DTC other than the applicable DTC is
not detected.

Engine speed: More than 625 rpm

Selector lever: Other than P/N position

CVT fluid temperature: More than -
20

C (-4

TCM power supply: More than 11 V

The difference between instruction
pressure of secondary pressure and
10-msec-ago instruction secondary
pressure is 0 MPa or more

Instruction pressure of secondary
pressure: 0 MPa or more

Instruction pressure of secondary
pressure - secondary pressure: More
than 1.2 MPa

When all of the following conditions are
satisfied and this state is maintained
for 1.52 seconds:

•

DTC other than the applicable DTC is
not detected.

•

CVT fluid temperature: More than -
20

C (-4

•

Selector lever: Other than P/N position

•

Instruction pressure of secondary
pressure - secondary pressure: 0.25
MPa or more

When all of the following conditions are
satisfied:

DTC other than the applicable DTC is
not detected.

CVT fluid temperature: More than -
20

C (-4

Selector lever: Other than P/N position

TCM power supply: More than 11 V

When all of the following conditions are
satisfied and this state is maintained
for 5.5 seconds:

•

DTC other than the applicable DTC is
not detected.

•

CVT fluid temperature: More than -
20

C (-4

•

Selector lever: Other than P/N position

•

Secondary pressure - instruction pres-
sure of secondary pressure: 1.2 MPa
or more

The difference between instruction
pressure of secondary pressure and
10-msec-ago instruction secondary
pressure is 0 MPa or more

Secondary pressure - instruction pres-
sure of secondary pressure: More than
1.2 MPa

Secondary pressure solenoid valve

TM-548

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

P0776 PRESSURE CONTROL SOLENOID B

DTC CONFIRMATION PROCEDURE

CAUTION:

Always drive vehicle at a safe speed.

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.

CHECK DTC DETECTION

Start the engine.

Drive the vehicle.

Maintain the following condition for 20 seconds or more.

Stop the vehicle.

Check the first trip DTC.

Is “P0776” detected?

YES

>> Go to

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010245622

CHECK INTERMITTENT INCIDNT

Refer to

Is the inspection result normal?

YES

>> Replace transaxle assembly. Refer to

TM-549, "Diagnosis Procedure"

>> Repair or replace the malfunction items.

Selector lever

: “D” position

Vehicle speed

: 40 km/h (25 MPH) or more

Accelerator pedal position

: 1.0/8 or more

P0778 PRESSURE CONTROL SOLENOID B

TM-549

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

P0778 PRESSURE CONTROL SOLENOID B

DTC Logic

INFOID:0000000010245623

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION:

Always drive vehicle at a safe speed.

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.

CHECK DTC DETECTION

Start the engine and wait for 5 seconds or more.

Check the first trip DTC.

Is “P0778” detected?

YES

>> Go to

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010245624

CHECK CIRCUIT BETWEEN TCM AND CVT UNIT

Turn ignition switch OFF.

Disconnect TCM connector and CVT unit connector.

Check continuity between TCM harness connector terminal and ground.

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair or replace damaged parts.

CHECK CIRCUIT BETWEEN CVT UNIT AND GROUND

Check continuity between CVT unit harness connector terminal and ground.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to

TM-551, "Diagnosis Procedure"

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

Possible cause

P0778

PC SOLENOID B
(Pressure Control Solenoid
“B” Electrical)

When all of the following conditions are satisfied
and this state is maintained for 0.48 seconds:
• TCM power supply voltage: More than 11 V
• TCM judges that solenoid valve circuit is short-

ed to ground.

• Harness or connectors

(Secondary pressure solenoid valve
circuit is shorted to ground.)

• Secondary pressure solenoid valve

TCM

—

Continuity

Connector

Terminal

Ground

Not existed

CVT unit

—

Condition

Resistance

Connector

Terminal

F207

Ground

CVT fluid temperature: 20

C (68

5.5 – 7.0

Ω

CVT fluid temperature: 50

C (122

6.0 – 8.0

Ω

CVT fluid temperature: 80

C (176

6.5 – 8.5

Ω

P0779 PRESSURE CONTROL SOLENOID B

TM-551

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

P0779 PRESSURE CONTROL SOLENOID B

DTC Logic

INFOID:0000000010245625

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

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.

CHECK DTC DETECTION

Start the engine.

Drive the vehicle.

Maintain the following conditions for 5 seconds or more.

Stop the vehicle.

Check the first trip DTC.

Is “P0779” detected?

YES

>> Go to

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010245626

CHECK CIRCUIT BETWEEN TCM AND CVT UNIT

Turn ignition switch OFF.

Disconnect TCM connector and CVT unit connector.

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

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair or replace damaged parts.

CHECK CIRCUIT BETWEEN CVT UNIT AND GROUND

Check continuity between CVT unit harness connector terminal and ground.

DTC

Trouble diagnosis name

DTC detection condition

Possible causes

P0779

Pressure control solenoid B
Intermittent

When all of the following conditions are satis-
fied and this state is maintained for 0.2 sec-
onds:
• TCM power supply voltage: More than 11 V
• P0778 is not detected
• TCM judges that solenoid valve circuit is

open or shorted to power supply.

• Harness or connector

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

• Secondary pressure solenoid valve

Selector lever

: “D” position

Vehicle speed

: 40 km/h (25 MPH) or more

TCM

CVT unit

Continuity

Connector

Terminal

Connector

Terminal

F58

Existed

TM-552

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

P0779 PRESSURE CONTROL SOLENOID B

Is the inspection result normal?

YES >> Check

intermittent incident. Refer to

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

CVT unit

—

Condition

Resistance

Connector

Terminal

F207

Ground

CVT fluid temperature: 20

C (68

5.5 – 7.0

Ω

CVT fluid temperature: 50

C (122

6.0 – 8.0

Ω

CVT fluid temperature: 80

C (176

6.5 – 8.5

Ω

P0826 UP AND DOWN SHIFT SW

TM-553

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

P0826 UP AND DOWN SHIFT SW

DTC Logic

INFOID:0000000010438739

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

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.

CHECK DTC DETECTION (PART 1)

With CONSULT

Start the engine.

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

Select “Self Diagnostic Results” in “TRANSMISSION”.

Is “P0826” detected?

YES

>> Go to

>> GO TO 3.

CHECK DTC DETECTION (PART 2)

With CONSULT

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

Select “Self Diagnostic Results” in “TRANSMISSION”.

Is “P0826” detected?

YES

>> Go to

>> GO TO 4.

CHECK DTC DETECTION (PART 3)

With CONSULT

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

Select “Self Diagnostic Results” in “TRANSMISSION”.

Is “P0826” detected?

YES

>> Go to

>> GO TO 5.

CHECK DTC DETECTION (PART 4)

With CONSULT

Shift the selector lever to “DOWN side (

−

side)” and wait for 1 second or more.

Select “Self Diagnostic Results” in “TRANSMISSION”.

Is “P0826” detected?

YES

>> Go to

TM-555, "Component Inspection"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010438740

CHECK DTC (COMBINATION METER)

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

Possible causes

P0826

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

TCM monitors manual mode, non-manual
mode, up or down switch signal, and detects
as irregular when impossible input pattern oc-
curs 1 second or more.

• Manual mode switch
• Harness or connectors

(Manual mode switch circuit are open
or shorted.)

TM-554

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

P0826 UP AND DOWN SHIFT SW

With CONSULT

Turn ignition switch ON.

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

Is any DTC detected?

YES

>> Check DTC detected item. Refer to

TM-485, "DTC Index"

>> GO TO 2.

CHECK MANUAL MODE SWITCH POWER SUPPLY CIRCUIT

Turn ignition switch OFF.

Disconnect CVT shift selector connector.

Turn ignition switch ON.

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

Is the inspection result normal?

YES

>> GO TO 3.

>> GO TO 4.

CHECK MANUAL MODE SWITCH

Turn ignition switch OFF.

Check manual mode switch. Refer to

Is the inspection result normal?

YES

>> GO TO 5.

>> Repair or replace damaged parts.

CHECK CIRCUIT BETWEEN CVT SHIFT SELECTOR AND COMBINATION METER

Turn ignition switch OFF.

Disconnect combination meter connector.

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

Check continuity between CVT shift selector harness connector terminals and ground.

–

Condition

Voltage

(Approx.)

CVT shift selector

Connector

Terminal

Ground

Ignition switch: ON

12 V

Ignition switch: OFF

0 V

Ignition switch: ON

12 V

Ignition switch: OFF

0 V

Ignition switch: ON

12 V

Ignition switch: OFF

0 V

Ignition switch: ON

12 V

Ignition switch: OFF

0 V

CVT shift selector

Combination meter

Continuity

Connector

Terminal

Connector

Terminal

M51

Existed

P0826 UP AND DOWN SHIFT SW

TM-555

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to

>> Repair or replace damaged parts.

CHECK GROUND CIRCUIT

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

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to

617, "Removal and Installation"

>> Repair or replace damaged parts.

Component Inspection

INFOID:0000000010438741

MANUAL MODE SWITCH

Check continuity between CVT shift selector connector terminals.

Is the inspection result normal?

YES

>> INSPECTION END

>> Replace the CVT shift selector assembly due to malfunction in manual mode switch. Refer to

TM-

CVT shift selector

—

Continuity

Connector

Terminal

Ground

Not existed

CVT shift selector

—

Continuity

Connector

Terminal

Ground

Existed

CVT shift selector

Condition

Continuity

Terminal

7 – 10

Manual shift gate position (neutral)

Existed

Other than the above

Not existed

8 – 10

Selector lever: DOWN (

−

side)

Existed

Other than the above

Not existed

9 – 10

Selector lever: UP (+ side)

Existed

Other than the above

Not existed

11 – 10

Manual shift gate position

Not existed

Other than the above

Existed

TM-556

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

P0841 TRANSMISSION FLUID PRESSURE SEN/SW A

P0841 TRANSMISSION FLUID PRESSURE SEN/SW A

DTC Logic

INFOID:0000000010245627

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION:

Always drive vehicle at a safe speed.

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.

CHECK DTC DETECTION

Start the engine.

Drive the vehicle.

Maintain the following condition for 10 seconds or more.

CAUTION:

Also keep the accelerator pedal position constant.

Stop the vehicle.

Check the first trip DTC.

Is “P0841” detected?

YES

>> Go to

TM-556, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010245628

CHECK INTERMITTENT INCIDENT

Refer to

Is the inspection result normal?

YES

>> Replace the transaxle assembly. Refer to

TM-557, "Diagnosis Procedure"

>> Repair or replace damaged parts.

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

Possible cause

P0841

FLUID PRESS SEN/SW A
(Transmission Fluid Pres-
sure Sensor/Switch “A” Cir-
cuit Range/Performance)

When all of the following conditions are sat-
isfied and this state is maintained for 5 sec-
onds:
• TCM power supply voltage: More than 11

• DTC other than the applicable DTC is not

detected.

• Primary pulley speed: 300 rpm or more
• Secondary pulley speed: 250 rpm or more
• Target speed for shifting: Less than 0.1

seconds

• Primary pulley pressure is outside the

specified value.

• Pulley ratio: From 0.5 to 1.0

• Harness or connectors

(Secondary pressure sensor circuit is
open or shorted.)

• Harness or connectors

(Primary pressure sensor circuit is open
or shorted.)

• Secondary pressure sensor

Selector lever

: “D” position

Vehicle speed

: Constant speed of 40 km/h (25 MPH)

P0847 TRANSMISSION FLUID PRESSURE SEN/SW B

TM-557

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

P0847 TRANSMISSION FLUID PRESSURE SEN/SW B

DTC Logic

INFOID:0000000010245629

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

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.

CHECK DTC DETECTION

With CONSULT

Start the engine.

Select “Data Monitor” in “TRANSMISSION”.

Select “FLUID TEMP”.

Maintain the following conditions for 10 seconds or more.

Check the first trip DTC.

With GST

Start the engine and wait for at least 10 seconds.

CAUTION:

When the ambient temperature is less than

−

C (

−

F) and the engine is cold, warm up the

engine for approximately 5 minutes.

Check the first trip DTC.

Is “P0847”detected?

YES

>> Go to

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010245630

CHECK TCM INPUT SIGNALS

Turn ignition switch OFF.

Start the engine.

Check voltage between TCM harness connector terminals.

Is the inspection result normal?

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

Possible causes

P0847

FLUID PRESS SEN/SW B
(Transmission Fluid Pressure
Sensor/Switch B Circuit Low)

When all of the following conditions are satis-
fied and this state is maintained for 5 seconds:
• CVT fluid temperature: More than

−

C (

−

• TCM power supply voltage: 11 V or more
• Secondary pressure sensor voltage: 0.09 V

or less

• Harness or connector

(Secondary pressure sensor circuit is
open or shorted to ground)

• Secondary pressure sensor
• Control valve assembly

FLUID TEMP

−

C (

−

Condition

Voltage

TCM

Connector

Terminal

Ground

• Selector lever: “N” position
• At idle

1.65 – 1.75 V

TM-558

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

P0847 TRANSMISSION FLUID PRESSURE SEN/SW B

YES >> Check

intermittent incident. Refer to

653, "Removal and Installation"

>> GO TO 2.

CHECK CIRCUIT BETWEEN TCM AND CVT UNIT (PART 1)

Turn ignition switch OFF.

Disconnect TCM connector and CVT unit connector.

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

Is the inspection result normal?

YES

>> GO TO 3.

>> Repair or replace malfunctioning parts.

CHECK CIRCUIT BETWEEN TCM AND CVT UNIT (PART 2)

Check continuity between TCM harness connector terminals and ground.

Is the inspection result normal?

YES

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

TM-

>> Repair or replace malfunctioning parts.

TCM

CVT unit

Continuity

Connector

Terminal

Connector

Terminal

F58

Existed

TCM

—

Continuity

Connector

Terminal

Ground

Not existed

P0848 TRANSMISSION FLUID PRESSURE SEN/SW B

TM-559

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

P0848 TRANSMISSION FLUID PRESSURE SEN/SW B

DTC Logic

INFOID:0000000010245631

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

PREPARATION BEFORE WORK

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

>> GO TO 2.

CHECK DTC DETECTION

With CONSULT

Start the engine.

Select “Data Monitor” in “TRANSMISSION”.

Select “FLUID TEMP”.

Maintain the following conditions for 10 seconds or more.

Check the first trip DTC.

With GST

Start the engine and wait for at least 10 seconds.

CAUTION:

When the ambient temperature is less than

−

C (

−

F) and the engine is cold, warm up the

engine for approximately 5 minutes.

Check the first trip DTC.

Is “P0848”detected?

YES

>> Go to

TM-559, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010245632

CHECK TCM INPUT SIGNALS

Turn ignition switch OFF.

Start the engine.

Check voltage between TCM harness connector terminals.

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

Possible causes

P0848

FLUID PRESS SEN/SW B
(Transmission Fluid Pressure
Sensor/Switch B Circuit Low)

When all of the following conditions are satis-
fied and this state is maintained for 5 seconds:
• CVT fluid temperature: More than

−

C (

−

• TCM power supply voltage: More than 11 V
• Instruction secondary pressure: 5.7 MPa or

less

• Secondary pressure sensor voltage: 4.7 V

or more

• Harness or connector

(Secondary pressure sensor circuit is
shorted to power supply)

• Secondary pressure sensor
• Control valve assembly

FLUID TEMP

: More than

−

C (

−

Condition

Voltage

TCM

Connector

Terminal

Ground

• Selector lever: “N” position
• At idle

1.65 – 1.75 V

TM-560

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10G]

P0848 TRANSMISSION FLUID PRESSURE SEN/SW B

Is the inspection result normal?

YES >> Check

intermittent incident. Refer to