Nissan Pathfinder. Manual - part 1170

P0848 TRANSMISSION FLUID PRESSURE SEN/SW B

TM-139

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10E]

C

E

F

G

H

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M

A

B

TM

N

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P0848 TRANSMISSION FLUID PRESSURE SEN/SW B

DTC Logic

INFOID:0000000009177594

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

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.

2.

CHECK DTC DETECTION

With CONSULT

1. Start the engine.

2. Select “Data Monitor” in “TRANSMISSION”.

3. Select “FLUID TEMP”.

4. Maintain the following conditions for 10 seconds or more.

5. Check the first trip DTC.

With GST

1. Start the engine and wait for at least 10 seconds.

CAUTION:

When the ambient temperature is less than 

−20°C (−4°F) and the engine is cold, warm up the

engine for approximately 5 minutes. 

2. Check the first trip DTC.
Is “P0848”detected?

YES

>> Go to 

TM-139, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009177595

1.

CHECK TCM INPUT SIGNALS

1. Turn ignition switch OFF.

2. Start the engine.

3. 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 

−20°C (−

4

°F)

• 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 

−20°C (−4°F)

+

−

Condition

Voltage

TCM

Connector

Terminal

F15

16

Ground

• Selector lever: “N” position
• At idle

1.67 – 1.69 V

TM-140

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10E]

P0848 TRANSMISSION FLUID PRESSURE SEN/SW B

Is the inspection result normal?

YES >> Check 

intermittent incident. Refer to 

GI-49, "Intermittent Incident"

.

NO

>> GO TO 2.

2.

CHECK SECONDARY PRESSURE SENSOR POWER CIRCUIT

1. Turn ignition switch OFF.

2. Connect TCM connector.

3. Disconnect CVT unit connector.

4. Check voltage between CVT unit harness connector terminal and ground.

Is the inspection result normal?

YES 

>> GO TO 3.

NO

>> Repair or replace malfunctioning parts.

3.

CHECK SECONDARY PRESSURE SENSOR SIGNAL CIRCUIT

Check voltage between CVT unit harness connector terminal and ground.

Is the inspection result normal?

YES 

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

TM-214, "Removal and Installation"

.

NO

>> Repair or replace malfunctioning parts.

+

−

Voltage

(Approx.)

CVT unit

Connector

Terminal

F46

22

Ground

5.0 V

+

−

Voltage

(Approx.)

CVT unit

Connector

Terminal

F46

14

Ground

0 V

P084C TRANSMISSION FLUID PRESSURE SEN/SW H

TM-141

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10E]

C

E

F

G

H

I

J

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L

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A

B

TM

N

O

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P084C TRANSMISSION FLUID PRESSURE SEN/SW H

DTC Logic

INFOID:0000000009177596

DTC DETECTION LOGIC

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

With CONSULT

1. Start the engine.

2. Select “Data Monitor” in “TRANSMISSION”.

3. Select “FLUID TEMP”.

4. Maintain the following conditions for 10 seconds or more.

5. Check the first trip DTC.

With GST

1. Start the engine and wait for at least 10 seconds.

CAUTION:

When the ambient temperature is less than 

−20°C (−4°F) and the engine is cold, warm up the

engine for approximately 5 minutes. 

2. Check the first trip DTC.
Is “P084C”detected?

YES

>> Go to 

TM-141, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009177597

1.

CHECK TCM INPUT SIGNALS

1. Turn ignition switch OFF.

2. Start the engine.

3. Check voltage between TCM harness connector terminals. 

Is the inspection result normal?

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

Possible causes

P084C

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

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

−20°C (−

4

°F)

• TCM power supply voltage: More than 11 V
• Primary pressure sensor voltage: 0.09 V or 

less

• Harness or connector

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

• Primary pressure sensor 
• Control valve assembly

FLUID TEMP

: More than 

−20°C (−4°F)

+

−

Condition

Voltage

TCM

Connector

Terminal

F15

17

Ground

• Selector lever: “N” position
• At idle

0.90 – 0.92 V

TM-142

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F10E]

P084C TRANSMISSION FLUID PRESSURE SEN/SW H

YES >> Check 

intermittent incident. Refer to 

GI-49, "Intermittent Incident"

.

NO

>> GO TO 2.

2.

CHECK CIRCUIT BETWEEN TCM AND CVT UNIT (PART 1)

1. Turn ignition switch OFF.

2. Disconnect TCM connector and CVT unit connector.

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

Is the inspection result normal?

YES 

>> GO TO 3.

NO

>> Repair or replace malfunctioning parts.

3.

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 primary pressure sensor circuit. Replace transaxle assembly. Refer to 

TM-

214, "Removal and Installation"

.

NO

>> Repair or replace malfunctioning parts.

TCM

CVT unit

Continuity

Connector

Terminal

Connector

Terminal

F15

11

F46

18

Existed

17

13

26

22

TCM

—

Continuity

Connector

Terminal

F15

17

Ground

Not existed

26