Nissan Murano Z51 (2008 year). Manual - part 379

P0746 PRESSURE CONTROL SOLENOID A PERFORMANCE (LINE PRESSURE 

SOLENOID VALVE)

TM-67

< COMPONENT DIAGNOSIS >

[CVT: RE0F09B]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

3.

Check pressure control solenoid valve A (line pressure solenoid valve). Refer to 

TM-67, "Component

Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace transaxle assembly. Refer to 

TM-176, "Exploded View"

.

3.

CHECK OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR) SYSTEM

Check output speed sensor (secondary speed sensor) system. Refer to 

TM-53, "DTC Logic"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace damaged parts.

4.

CHECK INPUT SPEED SENSOR (PRIMARY SPEED SENSOR) SYSTEM

Check input speed sensor (primary speed sensor) system. Refer to 

TM-50, "DTC Logic"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace damaged parts.

5.

DETECT MALFUNCTIONING ITEMS

Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?

YES

>> Replace TCM. Refer to 

TM-163, "Exploded View"

.

NO

>> Repair or replace damaged parts.

Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid 
Valve)]

INFOID:0000000003317807

1.

CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)

Check resistance between CVT unit connector terminal and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace transaxle assembly. Refer to 

TM-176, "Exploded View"

.

CVT unit connector

Ground

Resistance (Approx.)

Connector

Terminal

F24

2

3.0 – 9.0 

Ω

Revision: 2008 October

2009 Murano

TM-68

< COMPONENT DIAGNOSIS >

[CVT: RE0F09B]

P0776 PRESSURE CONTROL SOLENOID B PERFORMANCE (SEC PRESSURE 

SOLENOID VALVE)

P0776 PRESSURE CONTROL SOLENOID B PERFORMANCE (SEC PRES-
SURE SOLENOID VALVE)

Description

INFOID:0000000003317808

The pressure control solenoid valve B (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:0000000003317809

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION:

Always drive vehicle at a safe speed.
NOTE:
Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.

1.

CHECK DTC DETECTION

With CONSULT-III

1.

Turn ignition switch ON.

2.

Select “Data Monitor” in “TRANSMISSION”.

3.

Start engine and maintain the following conditions for at least 30 consecutive seconds.

With GST

Follow the procedure “With CONSULT-III”.

Is “P0776 PRS CNT SOL/B FCTN” detected?

YES

>> Go to 

TM-68, "Diagnosis Procedure"

.

NO

>> Check intermittent incident. Refer to 

GI-40, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000003317810

1.

CHECK LINE PRESSURE

Perform line pressure test. Refer to 

TM-156, "Inspection and Judgment"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace damaged parts. Refer to 

TM-156, "Inspection and Judgment"

.

2.

CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)

1.

Turn ignition switch OFF.

2.

Disconnect CVT unit connector.

DTC

Item

(CONSULT-III screen term)

Malfunction is detected when...

Possible cause

P0776

PRS CNT SOL/B FCTN

Secondary pressure is too high or too low 
compared with the commanded value while 
driving.

• Harness or connectors

(Solenoid circuit is open or shorted.)

• Pressure control solenoid valve B (sec-

ondary pressure solenoid valve system)

• Transmission fluid pressure sensor A 

(secondary pressure sensor)

• Line pressure control system

ATF TEMP SEN

: 1.0 

−

 2.0 V

ACC PEDAL OPEN

: More than 1.0/8

RANGE

: “D” position

VEHICLE SPEED

: 10 km/h (6 MPH) or more

Driving location

: Driving the vehicle uphill (increased engine load) will help maintain the driving 
conditions required for this test.

Revision: 2008 October

2009 Murano

P0776 PRESSURE CONTROL SOLENOID B PERFORMANCE (SEC PRESSURE 

SOLENOID VALVE)

TM-69

< COMPONENT DIAGNOSIS >

[CVT: RE0F09B]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

3.

Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to 

TM-69, "Compo-

nent Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)]"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace transaxle assembly. Refer to 

TM-176, "Exploded View"

.

3.

CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)

Check pressure control solenoid valve A (line pressure solenoid valve). Refer to 

TM-69, "Component Inspec-

tion [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace transaxle assembly. Refer to 

TM-176, "Exploded View"

.

4.

CHECK TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR) SYS-

TEM

Check transmission fluid pressure sensor A (secondary pressure sensor) system. Refer to 

TM-72, "DTC

Logic"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace damaged parts.

5.

DETECT MALFUNCTIONING ITEMS

Check TCM connector pin terminals for damage or loose connection with harness connector.

Is the inspection result normal?

YES

>> Replace TCM. Refer to 

TM-176, "Exploded View"

.

NO

>> Repair or replace damaged parts.

Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid 
Valve)]

INFOID:0000000003317811

1.

CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)

Check resistance between CVT unit connector terminal and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace transaxle assembly. Refer to 

TM-176, "Exploded View"

.

Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure So-
lenoid Valve)]

INFOID:0000000003317812

1.

CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)

Check resistance between CVT unit connector terminal and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace transaxle assembly. Refer to 

TM-176, "Exploded View"

.

CVT unit connector

Ground

Resistance (Approx.)

Connector

Terminal

F24

2

3.0 – 9.0 

Ω

CVT unit connector

Ground

Resistance (Approx.)

Connector

Terminal

F24

3

3.0 – 9.0 

Ω

Revision: 2008 October

2009 Murano

TM-70

< COMPONENT DIAGNOSIS >

[CVT: RE0F09B]

P0778 PRESSURE CONTROL SOLENOID B ELECTRICAL (SEC PRESSURE 

SOLENOID VALVE)

P0778 PRESSURE CONTROL SOLENOID B ELECTRICAL (SEC PRES-
SURE SOLENOID VALVE)

Description

INFOID:0000000003317813

The pressure control solenoid valve B (secondary pressure solenoid valve) regulates the oil pump discharge
pressure to suit the driving condition in response to a signal sent from the TCM.

DTC Logic

INFOID:0000000003317814

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION:

Always drive vehicle at a safe speed.
NOTE:
Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.

1.

CHECK DTC DETECTION

With CONSULT-III

1.

Start engine.

2.

Drive vehicle and maintain the following conditions for at least 5 consecutive seconds.

3.

Perform “Self Diagnostic Results” in “TRANSMISSION”.

With GST

Follow the procedure “With CONSULT-III”.

Is “P0778 PRS CNT SOL/B CIRC” detected?

YES

>> Go to 

TM-70, "Diagnosis Procedure"

.

NO

>> Check intermittent incident. Refer to 

GI-40, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000003317815

1.

CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)

CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect TCM connector.

3.

Check resistance between TCM vehicle side harness connector terminal and ground.

Is the inspection result normal?

YES 

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK HARNESS BETWEEN TCM AND PRESSURE CONTROL SOLENOID VALVE B (SECONDARY

PRESSURE SOLENOID VALVE) (PART 1)

1.

Disconnect CVT unit connector.

2.

Check continuity between TCM vehicle side harness connector terminal and CVT unit vehicle side har-
ness connector terminal.

DTC

Item

(CONSULT-III screen term)

Malfunction is detected when...

Possible cause

P0778

PRS CNT SOL/B CIRC

• Normal voltage is not applied to solenoid 

due to cut line, short, etc.

• TCM detects as irregular by comparing 

target value with monitor value.

• Harness or connectors

(Solenoid circuit is open or shorted.)

• Pressure control solenoid valve B (sec-

ondary pressure solenoid valve)

TCM vehicle side harness connector

Ground

Resistance (Approx.)

Connector

Terminal

F23

39

3.0 – 9.0 

Ω

Revision: 2008 October

2009 Murano

P0778 PRESSURE CONTROL SOLENOID B ELECTRICAL (SEC PRESSURE 

SOLENOID VALVE)

TM-71

< COMPONENT DIAGNOSIS >

[CVT: RE0F09B]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

3.

CHECK HARNESS BETWEEN TCM AND PRESSURE CONTROL SOLENOID VALVE B (SECONDARY

PRESSURE SOLENOID VALVE) (PART 2)

Check continuity between TCM vehicle side harness connector terminal and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace damaged parts.

4.

CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)

Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to 

TM-71, "Component

Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)]"

.

Is the inspection result normal?

YES 

>> GO TO 5.

NO

>> Replace transaxle assembly. Refer to 

TM-176, "Exploded View"

.

5.

DETECT MALFUNCTIONING ITEMS

Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?

YES

>> Replace TCM. Refer to 

TM-163, "Exploded View"

.

NO

>> Repair or replace damaged parts.

Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure So-
lenoid Valve)]

INFOID:0000000003317816

1.

CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)

Check resistance between CVT unit connector terminal and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace transaxle assembly. Refer to 

TM-176, "Exploded View"

.

TCM vehicle side harness connector

CVT unit vehicle side harness connector

Continuity

Connector

Terminal

Connector

Terminal

F23

39

F24

3

Existed

TCM vehicle side harness connector

Ground

Continuity

Connector

Terminal

F23

39

Not existed

CVT unit connector

Ground

Resistance (Approx.)

Connector

Terminal

F24

3

3.0 – 9.0 

Ω

Revision: 2008 October

2009 Murano

TM-72

< COMPONENT DIAGNOSIS >

[CVT: RE0F09B]

P0840 TRANSMISSION FLUID PRESSURE SENSOR A (SEC PRESSURE SEN-

SOR)

P0840 TRANSMISSION FLUID PRESSURE SENSOR A (SEC PRESSURE
SENSOR)

Description

INFOID:0000000003317821

The transmission fluid pressure sensor A (secondary pressure sensor) detects secondary pressure of CVT
and sends a signal to the TCM.

DTC Logic

INFOID:0000000003317822

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

NOTE:
Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.

1.

CHECK DTC DETECTION

With CONSULT-III

1.

Turn ignition switch ON.

2.

Select “Data Monitor” in “TRANSMISSION”.

3.

Make sure that output voltage of CVT fluid temperature sensor is within the range below.

4.

Start engine and wait for at least 5 consecutive seconds.

With GST

Follow the procedure “With CONSULT-III”.

Is “P0840 TR PRS SENS/A CIRC” detected?

YES

>> Go to 

TM-72, "Diagnosis Procedure"

.

NO

>> Check intermittent incident. Refer to 

GI-40, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000003317823

1.

CHECK INPUT SIGNAL

1.

Start engine.

2.

Check voltage between TCM connector terminal and ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 2.

2.

CHECK POWER AND SENSOR GROUND

Check voltage between TCM terminals.

DTC

Item

(CONSULT-III screen term)

Malfunction is detected when...

Possible cause

P0840

TR PRS SENS/A CIRC

Signal voltage of the transmission fluid pres-
sure sensor A (secondary pressure sensor) 
is too high or too low while driving.

• Harness or connectors

(Sensor circuit is open or shorted.)

• Transmission fluid pressure sensor A 

(secondary pressure sensor)

ATF TEMP SEN

: 1.0 – 2.0 V

If it is out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to increase the voltage 
(cool down the fluid)

TCM connector

Ground

Condition

Voltage (Approx.)

Connector

Terminal

F23

15

“N” position idle

1.0 – 1.5 V

Revision: 2008 October

2009 Murano

P0840 TRANSMISSION FLUID PRESSURE SENSOR A (SEC PRESSURE SEN-

SOR)

TM-73

< COMPONENT DIAGNOSIS >

[CVT: RE0F09B]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 5.

3.

CHECK HARNESS BETWEEN TCM AND CVT UNIT [TRANSMISSION FLUID PRESSURE SENSOR A

(SECONDARY PRESSURE SENSOR)] (PART 1)

1.

Turn ignition switch OFF.

2.

Disconnect TCM connector and CVT unit connector.

3.

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 [TRANSMISSION FLUID PRESSURE SENSOR A

(SECONDARY PRESSURE SENSOR)] (PART 2)

Check continuity between TCM vehicle side harness connector terminal and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace damaged parts.

5.

CHECK HARNESS BETWEEN TCM AND CVT UNIT (SENSOR POWER AND SENSOR GROUND) (PART

1)

1.

Turn ignition switch OFF.

2.

Disconnect TCM connector and CVT unit connector.

3.

Check continuity between TCM vehicle side harness connector terminals and CVT unit vehicle side har-
ness connector terminals.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace damaged parts.

6.

CHECK HARNESS BETWEEN TCM AND CVT UNIT (SENSOR POWER AND SENSOR GROUND) (PART

2)

Check continuity between TCM vehicle side harness connector terminals and ground.

TCM connector

Voltage (Approx.)

Connector

Terminal

F23

25

26

4.75 – 5.25 V

TCM vehicle side harness connector

CVT unit vehicle side harness connector

Continuity

Connector

Terminal

Connector

Terminal

F23

15

F24

23

Existed

TCM vehicle side harness connector

Ground

Continuity

Connector

Terminal

F23

15

Not existed

TCM vehicle side harness connector

CVT unit vehicle side harness connector

Continuity

Connector

Terminal

Connector

Terminal

F23

25

F24

19

Existed

26

20

Revision: 2008 October

2009 Murano

TM-74

< COMPONENT DIAGNOSIS >

[CVT: RE0F09B]

P0840 TRANSMISSION FLUID PRESSURE SENSOR A (SEC PRESSURE SEN-

SOR)

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace damaged parts.

7.

CHECK TCM

1.

Replace with the same type of TCM. Refer to 

TM-163, "Exploded View"

.

2.

Connect each connector.

3.

Perform “DTC CONFIRMATION PROCEDURE”. Refer to 

TM-72, "DTC Logic"

.

Is “P0840 TR PRS SENS/A CIRC” detected?

YES

>> Replace transaxle assembly. Refer to 

TM-176, "Exploded View"

.

NO

>> Replace TCM. Refer to 

TM-163, "Exploded View"

.

8.

DETECT MALFUNCTIONING ITEMS

Check TCM connector pin terminals for damage or loose connection with harness connector.

Is the inspection result normal?

YES

>> Replace TCM. Refer to 

TM-163, "Exploded View"

.

NO

>> Repair or replace damaged parts.

TCM vehicle side harness connector

Ground

Continuity

Connector

Terminal

F23

25

Not existed

26

Revision: 2008 October

2009 Murano

P0841 PRESSURE SENSOR FUNCTION

TM-75

< COMPONENT DIAGNOSIS >

[CVT: RE0F09B]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

P0841 PRESSURE SENSOR FUNCTION

Description

INFOID:0000000003317824

Using the engine load (throttle position), the primary pulley revolution speed, and the secondary pulley revolu-
tion speed as input signals, TCM changes the operating pressure of the primary pulley and the secondary pul-
ley and changes the groove width of the pulley to control the gear ratio.

DTC Logic

INFOID:0000000003317825

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION:

Always drive vehicle at a safe speed.
NOTE:
Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.

1.

CHECK DTC DETECTION

With CONSULT-III

1.

Turn ignition switch ON.

2.

Select “Data Monitor” in “TRANSMISSION”.

3.

Start engine and maintain the following conditions for at least 12 consecutive seconds.

Is “P0841 PRESS SEN/FNCTN” detected?

YES

>> Go to 

TM-75, "Diagnosis Procedure"

.

NO

>> Check intermittent incident. Refer to 

GI-40, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000003317826

1.

CHECK LINE PRESSURE

Perform line pressure test. Refer to 

TM-156, "Inspection and Judgment"

.

Is the inspection result normal?

YES

>> .GO TO 2.

NO

>> Repair or replace damaged parts. Refer to 

TM-156, "Inspection and Judgment"

.

2.

CHECK TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR) SYS-

TEM

Check transmission fluid pressure sensor A (secondary pressure sensor) system. Refer to 

TM-72, "Descrip-

tion"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

3.

CHECK TRANSMISSION FLUID PRESSURE SENSOR B (PRIMARY PRESSURE SENSOR) SYSTEM

Check transmission fluid pressure sensor B (primary pressure sensor) system. Refer to 

TM-78, "Description"

.

DTC

Item

(CONSULT-III screen term)

Malfunction is detected when...

Possible cause

P0841

PRESS SEN/FNCTN

Correlation between the values of the trans-
mission fluid pressure sensor A (secondary 
pressure sensor) and the transmission fluid 
pressure sensor B (primary pressure sen-
sor) is out of specification.

• Harness or connectors

(Sensor circuit is open or shorted.)

• Transmission fluid pressure sensor A 

(secondary pressure sensor)

• Transmission fluid pressure sensor B (pri-

mary pressure sensor)

VEHICLE SPEED

: 40 km/h (25 MPH) or more

RANGE

: “D” position

Revision: 2008 October

2009 Murano

TM-76

< COMPONENT DIAGNOSIS >

[CVT: RE0F09B]

P0841 PRESSURE SENSOR FUNCTION

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace damaged parts.

4.

CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)

1.

Turn ignition switch OFF.

2.

Disconnect CVT unit connector.

3.

Check pressure control solenoid valve A (line pressure solenoid valve). Refer to 

TM-76, "Component

Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace damaged parts.

5.

CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)

Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to 

TM-76, "Component

Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)]"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace damaged parts.

6.

CHECK STEP MOTOR SYSTEM

Check step motor system. Refer to 

TM-95, "Description"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace damaged parts.

7.

DETECT MALFUNCTIONING ITEMS

Check TCM connector pin terminals for damage or loose connection with harness connector.

Is the inspection result normal?

YES

>> Replace TCM. Refer to 

TM-163, "Exploded View"

.

NO

>> Repair or replace damaged parts.

Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid 
Valve)]

INFOID:0000000003317827

1.

CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)

Check resistance between CVT unit connector terminal and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace transaxle assembly. Refer to 

TM-176, "Exploded View"

.

Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure So-
lenoid Valve)]

INFOID:0000000003317828

1.

CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)

Check resistance between CVT unit connector terminal and ground.

CVT unit connector

Ground

Resistance (Approx.)

Connector

Terminal

F24

2

3.0 – 9.0 

Ω

CVT unit connector

Ground

Resistance (Approx.)

Connector

Terminal

F24

3

3.0 – 9.0 

Ω

Revision: 2008 October

2009 Murano

P0841 PRESSURE SENSOR FUNCTION

TM-77

< COMPONENT DIAGNOSIS >

[CVT: RE0F09B]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace transaxle assembly. Refer to 

TM-176, "Exploded View"

.

Revision: 2008 October

2009 Murano

TM-78

< COMPONENT DIAGNOSIS >

[CVT: RE0F09B]

P0845 TRANSMISSION FLUID PRESSURE SENSOR B (PRI PRESSURE SEN-

SOR)

P0845 TRANSMISSION FLUID PRESSURE SENSOR B (PRI PRESSURE
SENSOR)

Description

INFOID:0000000003317829

The transmission fluid pressure sensor B (primary pressure sensor) detects primary pressure of CVT and
sends a signal to the TCM.

DTC Logic

INFOID:0000000003317830

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

NOTE:
Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.

1.

CHECK DTC DETECTION

With CONSULT-III

1.

Turn ignition switch ON.

2.

Select “Data Monitor” in “TRANSMISSION”.

3.

Make sure that output voltage of line temperature sensor is within the range below.

4.

Start engine and wait for at least 5 consecutive seconds.

With GST

Follow the procedure “With CONSULT-III”.

Is “P0845 TR PRS SENS/B CIRC” detected?

YES

>> Go to 

TM-78, "Diagnosis Procedure"

.

NO

>> Check intermittent incident. Refer to 

GI-40, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000003317831

1.

CHECK INPUT SIGNAL

1.

Start engine.

2.

Check voltage between TCM connector terminal and ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 2.

2.

CHECK SENSOR POWER AND SENSOR GROUND

Check voltage between TCM connector terminals.

DTC

Item

(CONSULT-III screen term)

Malfunction is detected when...

Possible cause

P0845

TR PRS SENS/B CIRC

Signal voltage of the transmission fluid pres-
sure sensor B (primary pressure sensor) is 
too high or too low while driving.

• Harness or connectors

(Sensor circuit is open or shorted.)

• Transmission fluid pressure sensor B (pri-

mary pressure sensor)

ATF TEMP SEN

: 1.0 – 2.0 V

If it is out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to increase the voltage 
(cool down the fluid)

TCM connector

Ground

Condition

Voltage (Approx.)

Connector

Terminal

F23

14

“N” position idle

0.5 – 0.8 V

Revision: 2008 October

2009 Murano

P0845 TRANSMISSION FLUID PRESSURE SENSOR B (PRI PRESSURE SEN-

SOR)

TM-79

< COMPONENT DIAGNOSIS >

[CVT: RE0F09B]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 5.

3.

CHECK HARNESS BETWEEN TCM AND CVT UNIT [TRANSMISSION FLUID PRESSURE SENSOR B

(PRIMARY PRESSURE SENSOR)] (PART 1)

1.

Turn ignition switch OFF.

2.

Disconnect TCM connector and CVT unit connector.

3.

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 [TRANSMISSION FLUID PRESSURE SENSOR B

(PRIMARY PRESSURE SENSOR)] (PART 2)

Check continuity between TCM vehicle side harness connector terminal and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace damaged parts.

5.

CHECK HARNESS BETWEEN TCM AND CVT UNIT (SENSOR POWER AND SENSOR GROUND) (PART

1)

1.

Turn ignition switch OFF.

2.

Disconnect TCM connector and CVT unit connector.

3.

Check continuity between TCM vehicle side harness connector terminal and CVT unit vehicle side har-
ness connector terminals.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace damaged parts.

6.

CHECK HARNESS BETWEEN TCM AND CVT UNIT (SENSOR POWER AND SENSOR GROUND) (PART

2)

Check continuity between TCM vehicle side harness connector terminals and ground.

TCM connector

Voltage (Approx.)

Connector

Terminal

F23

25

26

4.75 – 5.25 V

TCM vehicle side harness connector

CVT unit vehicle side harness connector

Continuity

Connector

Terminal

Connector

Terminal

F23

14

F24

25

Existed

TCM vehicle side harness connector

Ground

Continuity

Connector

Terminal

F23

14

Not existed

TCM vehicle side harness connector

CVT unit vehicle side harness connector

Continuity

Connector

Terminal

Connector

Terminal

F23

25

F24

19

Existed

26

20

Revision: 2008 October

2009 Murano

TM-80

< COMPONENT DIAGNOSIS >

[CVT: RE0F09B]

P0845 TRANSMISSION FLUID PRESSURE SENSOR B (PRI PRESSURE SEN-

SOR)

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace damaged parts.

7.

CHECK TCM

1.

Replace with the same type of TCM. Refer to 

TM-163, "Exploded View"

.

2.

Connect each connector.

3.

Perform “DTC CONFIRMATION PROCEDURE”. Refer to 

TM-78, "DTC Logic"

.

Is “P0845 TR PRS SENS/B CIRC” detected?

YES

>> Replace transaxle assembly. Refer to 

TM-176, "Exploded View"

.

NO

>> Replace TCM. Refer to 

TM-163, "Exploded View"

.

8.

DETECT MALFUNCTIONING ITEMS

Check TCM connector pin terminals for damage or loose connection with harness connector.

Is the inspection result normal?

YES

>> Replace TCM. Refer to 

TM-163, "Exploded View"

.

NO

>> Repair or replace damaged parts.

TCM vehicle side harness connector

Ground

Continuity

Connector

Terminal

F23

25

Not existed

26

Revision: 2008 October

2009 Murano

P0868 SECONDARY PRESSURE DOWN

TM-81

< COMPONENT DIAGNOSIS >

[CVT: RE0F09B]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

P0868 SECONDARY PRESSURE DOWN

Description

INFOID:0000000003317832

The pressure control solenoid valve B (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:0000000003317833

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION:

Always drive vehicle at a safe speed.
NOTE:
Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.

1.

CHECK DTC DETECTION

With CONSULT-III

1.

Turn ignition switch ON.

2.

Select “Data Monitor” in “TRANSMISSION”.

3.

Make sure that output voltage of CVT fluid temperature sensor is within the range below.

4.

Start engine and maintain the following conditions for at least 10 consecutive seconds.

Is “P0868 SEC/PRESS DOWN” detected?

YES

>> Go to 

TM-81, "Diagnosis Procedure"

.

NO

>> Check intermittent incident. Refer to 

GI-40, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000003317834

1.

CHECK LINE PRESSURE

Perform line pressure test. Refer to 

TM-156, "Inspection and Judgment"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace damaged parts. Refer to 

TM-156, "Inspection and Judgment"

.

2.

CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)

1.

Turn ignition switch OFF.

2.

Disconnect CVT unit connector.

DTC

Item

(CONSULT-III screen term)

Malfunction is detected when...

Possible cause

P0868

SEC/PRESS DOWN

Secondary fluid pressure is too low com-
pared with the commanded value while driv-
ing.

• Harness or connectors

(Solenoid circuit is open or shorted.)

• Pressure control solenoid valve B (sec-

ondary pressure solenoid valve) system

• Transmission fluid pressure sensor A 

(secondary pressure sensor)

• Line pressure control system

ATF TEMP SEN

: 1.0 – 2.0 V

If it is out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to increase the voltage 
(cool down the fluid)

VEHICLE SPEED (accelerate slow-
ly)

: 0 

→

 50 km/h (31 MPH)

ACC PEDAL OPEN

: 0.5/8 – 1.0/8

RANGE

: “D” position

Revision: 2008 October

2009 Murano

TM-82

< COMPONENT DIAGNOSIS >

[CVT: RE0F09B]

P0868 SECONDARY PRESSURE DOWN

3.

Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to 

TM-82, "Compo-

nent Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)]"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

3.

CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)

Check pressure control solenoid valve A (line pressure solenoid valve). Refer to 

TM-82, "Component Inspec-

tion [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace damaged parts.

4.

CHECK TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR) SYS-

TEM

Check transmission fluid pressure sensor A (secondary pressure sensor) system. Refer to 

TM-72, "DTC

Logic"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace damaged parts.

5.

DETECT MALFUNCTIONING ITEMS

Check TCM connector pin terminals for damage or loose connection with harness connector.

Is the inspection result normal?

YES

>> Replace TCM. Refer to 

TM-163, "Exploded View"

.

NO

>> Repair or replace damaged parts.

Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid 
Valve)]

INFOID:0000000003317835

1.

CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)

Check resistance between CVT unit connector terminal and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace transaxle assembly. Refer to 

TM-176, "Exploded View"

.

Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure So-
lenoid Valve)]

INFOID:0000000003317836

1.

CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)

Check resistance between CVT unit connector terminal and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace transaxle assembly. Refer to 

TM-176, "Exploded View"

.

CVT unit connector

Ground

Resistance (Approx.)

Connector

Terminal

F24

2

3.0 – 9.0 

Ω

CVT unit connector

Ground

Resistance (Approx.)

Connector

Terminal

F24

3

3.0 – 9.0 

Ω

Revision: 2008 October

2009 Murano