Nissan Teana J32. Manual - part 1180

TM-244

< COMPONENT DIAGNOSIS >

[CVT: RE0F10A]

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-315, "Exploded View"

.

2.

Connect each connector.

3.

Perform “DTC CONFIRMATION PROCEDURE”. Refer to 

TM-242, "DTC Logic"

.

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

YES

>> Replace transaxle assembly. Refer to 

TM-332, "Exploded View"

.

NO

>> Replace TCM. Refer to 

TM-315, "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-315, "Exploded View"

.

NO

>> Repair or replace damaged parts.

TCM vehicle side harness connector

Ground

Continuity

Connector

Terminal

F23

25

Not existed

26

P0841 PRESSURE SENSOR FUNCTION

TM-245

< COMPONENT DIAGNOSIS >

[CVT: RE0F10A]

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P0841 PRESSURE SENSOR FUNCTION

Description

INFOID:0000000003806439

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:0000000003806440

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION:

Always drive vehicle at a safe speed.
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch
OFF. Then wait at least 10 seconds before performing the next test.
Perform the following procedure to confirm the malfunction is eliminated after the repair.

1.

CHECK DTC DETECTION

With CONSULT-III

1.

Turn ignition switch ON.

2.

Select “Data Monitor” mode for “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-245, "Diagnosis Procedure"

.

NO

>> Check intermittent incident. Refer to 

GI-35, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000003806441

1.

CHECK LINE PRESSURE

Perform line pressure test. Refer to 

TM-308, "Inspection and Judgment"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace damaged parts. Refer to 

TM-308, "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-242, "Descrip-

tion"

.

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)

DTC

Item

(CONSULT-III screen term)

Malfunction is detected when...

Possible cause

P0841

PRESS SEN/FNCTN

Secondary pressure became 
higher than line pressure.

• Transmission fluid pressure 

sensor A (secondary pres-
sure sensor)

• Harness or connectors

(Sensor circuit is open or 
shorted.)

VEHICLE SPEED

: 40 km/h (25 MPH) More than

RANGE

: “D” position

TM-246

< COMPONENT DIAGNOSIS >

[CVT: RE0F10A]

P0841 PRESSURE SENSOR FUNCTION

Check line pressure solenoid valve. Refer to 

TM-246, "Component Inspection [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 PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)

Check secondary pressure solenoid valve. Refer to 

TM-246, "Component Inspection [Pressure Control Sole-

noid Valve B (Secondary Pressure Solenoid Valve)]"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace damaged parts.

5.

CHECK STEP MOTOR SYSTEM

Check step motor system. Refer to 

TM-261, "Description"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace damaged parts.

6.

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-315, "Exploded View"

.

NO

>> Repair or replace damaged parts.

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

INFOID:0000000003806442

1.

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

Check resistance between CVT unit harness connector terminal and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the transaxle assembly. Refer to 

TM-332, "Exploded View"

.

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

INFOID:0000000003806443

1.

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

Check resistance between CVT unit harness connector terminal and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the transaxle assembly. Refer to 

TM-332, "Exploded View"

.

CVT unit harness connector

Ground

Resistance (Approx.)

Connector

Terminal

F24

2

3.0 – 9.0 

Ω

CVT unit harness connector

Ground

Resistance (Approx.)

Connector

Terminal

F24

3

3.0 – 9.0 

Ω

P0868 SECONDARY PRESSURE DOWN

TM-247

< COMPONENT DIAGNOSIS >

[CVT: RE0F10A]

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P0868 SECONDARY PRESSURE DOWN

Description

INFOID:0000000003806444

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

DTC Logic

INFOID:0000000003806445

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION:

Always drive vehicle at a safe speed.
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch
OFF. Then wait at least 10 seconds before performing the next test.
Perform the following procedure to confirm the malfunction is eliminated after the repair.

1.

CHECK DTC DETECTION

With CONSULT-III

1.

Turn ignition switch ON.

2.

Select “Data Monitor” mode for “TRANSMISSION”.

3.

Make sure that output voltage of CVT fluid temperature sensor is within the range specified 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-247, "Diagnosis Procedure"

.

NO

>> Check intermittent incident. Refer to 

GI-35, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000003806446

1.

CHECK LINE PRESSURE

Perform line pressure test. Refer to 

TM-308, "Inspection and Judgment"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace damaged parts. Refer to 

TM-308, "Inspection and Judgment"

.

DTC

Item

(CONSULT-III screen term)

Malfunction is detected when...

Possible cause

P0868

SEC/PRESS DOWN

Secondary fluid pressure is too 
low compared with the com-
manded value while driving.

• Harness or connectors

(Solenoid circuit is open or 
shorted.)

• Pressure control solenoid 

valve B (secondary pressure 
solenoid valve) system

• Transmission fluid pressure 

sensor A (secondary pres-
sure 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 
slowly)

: 0 

→

 50 km/h (31 MPH)

ACC PEDAL OPEN

: 0.5/8 – 1.0/8

RANGE

: “D” position