Nissan Pathfinder (2011 year). Instruction — part 192

DLN-74

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

P1826 TRANSFER FLUID TEMPERATURE

P1826 TRANSFER FLUID TEMPERATURE

Description

INFOID:0000000006244982

Signal voltage from the transfer fluid temperature sensor is abnormally high (Transfer fluid temperature is

abnormally low) while driving.

DTC Logic

INFOID:0000000006244983

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Perform self-diagnosis.
Is DTC P1826 displayed?

YES

>> Perform diagnosis procedure. Refer to

DLN-74, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000006244984

Regarding Wiring Diagram information, refer to

DLN-100, "Wiring Diagram"

.

1.

CHECK TRANSFER FLUID TEMPERATURE SENSOR SIGNAL

With CONSULT-III

1. Start engine.

2. Select DATA MONITOR mode for ALL MODE AWD/4WD with CONSULT-III.

3. Read out the value of FLUID TEMP SE.

Without CONSULT-III

1. Start engine.

2. Check voltage between transfer control unit harness connector

terminals and ground.

Are inspection results normal?

DTC

CONSULT-III

Diagnostic item is detected when...

Reference

[P1826]

OIL TEMP SEN

Signal voltage from transfer fluid temper-
ature sensor is abnormally high (Trans-
fer fluid temperature is abnormally low)
while driving.

Refer to

DLN-74

.

Condition

Display value

(Approx.)

Transfer fluid temperature approx. 20 - 80

°

C (68 - 176

°

F)

1.1 - 0.3V

Connector

Terminal

Condition

Data

(Approx.)

M153

28 -

Ground

Always

0V

31 -

Ground

Ignition switch:
ON

Transfer fluid temperature
approx. 20

°

C (68

°

F)

1.1V

Transfer fluid temperature
approx. 80

°

C (176

°

F)

0.3V

SDIA2742E

2011 Pathfinder

P1826 TRANSFER FLUID TEMPERATURE

DLN-75

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

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N

O

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YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND TRANSFER TERMINAL CORD AS-

SEMBLY

1. Turn ignition switch OFF. (Stay for at least 5 seconds.)

2. Disconnect transfer control unit harness connector and transfer terminal cord assembly harness connec-

tor.

3. Check continuity between the following terminals.

-

Transfer control unit harness connector M153 terminal 28 and

transfer terminal cord assembly harness connector F56 terminal

3 .

-

Transfer control unit harness connector M153 terminal 31 and

transfer terminal cord assembly harness connector F56 terminal

2.

Also check harness for short to ground and short to power.

Are inspection results normal?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

3.

CHECK TRANSFER FLUID TEMPERATURE SENSOR

1. Turn ignition switch OFF. (Stay for at least 5 seconds.)

2. Disconnect transfer terminal cord assembly harness connector.

3. Check resistance between transfer terminal cord assembly ter-

minals 2 and 3.

Are inspection results normal?

YES

>> GO TO 4.

NO

>> Replace transfer fluid temperature sensor. Refer to

DLN-19, "Component Parts Location"

.

4.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to

DLN-88, "Reference Value"

.

Are inspection results normal?

YES

>> GO TO 5.

NO

>> Check transfer control unit pin terminals for damage or loose connection with harness connector.

If any items are damaged, repair or replace damaged parts.

5.

CHECK DTC

Drive the vehicle and then perform self-diagnosis.
Are inspection results normal?

YES

>> Inspection End.

NO

>> Replace transfer control unit. Refer to

DLN-140, "Removal and Installation"

.

Component Inspection

INFOID:0000000006244985

1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Disconnect transfer terminal cord assembly harness connector.

Continuity should exist.

SDIA2743E

Temperature

°

C (

°

F)

Resistance (Approx.)

20 (68)

2.5 k

Ω

80 (176)

0.3 k

Ω

WDIA0188E

2011 Pathfinder

DLN-76

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

P1826 TRANSFER FLUID TEMPERATURE

3. Check resistance between transfer terminal cord assembly ter-

minals 2 and 3.

4. If the inspection results are abnormal replace the transfer fluid

temperature sensor. Refer to

DLN-19, "Component Parts Loca-

tion"

.

Temperature

°

C (

°

F)

Resistance (Approx.)

20 (68)

2.5 k

Ω

80 (176)

0.3 k

Ω

WDIA0188E

2011 Pathfinder

P1827 CLUTCH PRESSURE SWITCH

DLN-77

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

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DLN

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P1827 CLUTCH PRESSURE SWITCH

Description

INFOID:0000000006244986

Improper signal from the clutch pressure switch is input due to open or short circuit. Also, a malfunction may

have occurred in clutch pressure switch or hydraulic circuit.

DTC Logic

INFOID:0000000006244987

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Perform self-diagnosis.
Is DTC P1827 displayed?

YES

>> Perform diagnosis procedure. Refer to

DLN-77, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000006244988

Regarding Wiring Diagram information, refer to

DLN-100, "Wiring Diagram"

.

1.

CHECK CLUTCH PRESSURE SWITCH SIGNAL

With CONSULT-III

1. Start engine.

2. Select DATA MONITOR mode for ALL MODE AWD/4WD with CONSULT-III.

3. Read out ON/OFF switching action of the CL PRES SW while operating 4WD shift switch.

Without CONSULT-III

1. Start engine.

2. Check voltage between transfer control unit harness connector

terminals and ground.

DTC

CONSULT-III

Diagnostic item is detected when...

Reference

[P1827]

CLUTCH PRES SW

• Improper signal from clutch pressure

switch is input due to open or short cir-
cuit.

• Malfunction occurs in clutch pressure

switch or hydraulic circuit.

Refer to

DLN-77

.

Condition

Display value

• Ignition switch: ON
• A/T selector lever D position

4WD shift switch: AUTO or 4H (Wait
function is not operating.)

ON

Ignition switch: ON

4WD shift switch: 2WD (Wait function
is not operating.)

OFF

SDIA2746E

2011 Pathfinder

DLN-78

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

P1827 CLUTCH PRESSURE SWITCH

Are inspection results normal?

YES

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND CLUTCH PRESSURE SWITCH

1. Turn ignition switch OFF. (Stay for at least 5 seconds.)

2. Disconnect transfer control unit harness connector and the transfer terminal cord assembly harness con-

nector.

3. Check continuity between transfer control unit harness connec-

tor M153 terminal 34 and transfer terminal cord assembly har-

ness connector F56 terminal 7

Also check harness for short to ground and short to power.

Are inspection results normal?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

3.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to

DLN-88, "Reference Value"

.

Are inspection results normal?

YES

>> GO TO 4.

NO

>> Check transfer control unit pin terminals for damage or loose connection with the harness connec-

tor. If any items are damaged, repair or replace damaged parts.

4.

CHECK CLUTCH PRESSURE SWITCH

1. Turn ignition switch OFF. (Stay for at least 5 seconds.)

2. Remove clutch pressure switch. Refer to

DLN-19, "Component Parts Location"

.

3. Push and release clutch pressure switch and check continuity between terminal 7 and ground.

Are inspection results normal?

YES

>> GO TO 5.

NO

>> Replace clutch pressure switch.

5.

CHECK DTC

Perform the self-diagnosis, after driving a vehicle for a while.
Are inspection results normal?

YES

>> GO TO 6.

NO

>> Replace transfer control unit. Refer to

DLN-140, "Removal and Installation"

.

6.

CRUISE TEST

Connector

Terminal

Condition

Voltage

(Approx.)

M153

34 -

Ground

• Ignition switch: ON
• A/T selector lever D

position

4WD shift switch:
AUTO or 4H (Wait
function is not op-
erating.)

0V

Ignition switch: ON

4WD shift switch:
2WD (Wait function
is not operating.)

Battery
voltage

Continuity should exist.

SDIA2747E

Terminal

Condition

Continuity

7 -

Ground

Push clutch pressure switch

Yes

Release clutch pressure switch

No

2011 Pathfinder

P1827 CLUTCH PRESSURE SWITCH

DLN-79

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

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DLN

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Perform cruise test. Refer to

DLN-10, "Preliminary Check"

.

Are inspection results normal?

YES

>> Inspection End.

NO

>> Perform the applicable trouble diagnosis.

Component Inspection

INFOID:0000000006244989

1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Remove clutch pressure switch. Refer to

DLN-19, "Component Parts Location"

.

3. Push and release clutch pressure switch and check continuity between terminal 7 and ground.

4. If the inspection results are abnormal replace the clutch pressure switch.

Terminal

Condition

Continuity

7 - Ground

Push clutch pressure switch

Yes

Release clutch pressure switch

No

2011 Pathfinder

DLN-80

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

P1828 LINE PRESSURE SWITCH

P1828 LINE PRESSURE SWITCH

Description

INFOID:0000000006244990

Improper signal from line pressure switch is input due to open or short circuit. Also, a malfunction may have

occurred in the line pressure switch or hydraulic circuit.

DTC Logic

INFOID:0000000006244991

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Perform self-diagnosis.
Is DTC P1828 displayed?

YES

>> Perform diagnosis procedure. Refer to

DLN-80, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000006244992

Regarding Wiring Diagram information, refer to

DLN-100, "Wiring Diagram"

.

1.

CHECK LINE PRESSURE SWITCH SIGNAL

With CONSULT-III

1. Start engine.

2. Select DATA MONITOR mode for ALL MODE AWD/4WD with CONSULT-III.

3. Read out ON/OFF switching action of LINE PRES SW while operating 4WD shift switch.

Without CONSULT-III

1. Start engine.

DTC

CONSULT-III

Diagnostic item is detected when...

Reference

[P1828]

LINE PRES SW

• Improper signal from line pressure

switch is input due to open or short cir-
cuit.

• Malfunction occurs in line pressure

switch or hydraulic circuit.

Refer to

DLN-80

.

Condition

Display value

• A/T selector lever D position
• 4WD shift switch: AUTO

ON

• Except the above
• The vehicle has been left

at room temperature for 5
minutes and more with ig-
nition switch in OFF posi-
tion.

• Ignition switch: ON
• A/T selector lever: P or N position
• 4WD shift switch: other than

AUTO

OFF

2011 Pathfinder

P1828 LINE PRESSURE SWITCH

DLN-81

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

2. Check voltage between transfer control unit harness connector

terminals and ground.

Are inspection results normal?

YES

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND LINE PRESSURE SWITCH

1. Turn ignition switch OFF. (Stay for at least 5 seconds.)

2. Disconnect transfer control unit harness connector and the transfer terminal cord assembly harness con-

nector.

3. Check continuity between transfer control unit harness connec-

tor M153 terminal 35 and transfer terminal cord assembly har-

ness connector F56 terminal 1.

Also check harness for short to ground and short to power.

Are inspection results normal?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

3.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to

DLN-88, "Reference Value"

.

Are inspection results normal?

YES

>> GO TO 4.

NO

>> Check the following. If any items are damaged, repair or replace damaged parts.

• Transfer control unit pin terminals for damage or loose connection with harness connector.

• Transfer control unit. Refer to

DLN-140, "Removal and Installation"

.

4.

CHECK LINE PRESSURE SWITCH

1. Turn ignition switch OFF. (Stay for at least 5 seconds.)

2. Remove line pressure switch. Refer to

DLN-19, "Component Parts Location"

.

3. Push and release line pressure switch and check continuity between terminal 1 and ground.

Are inspection results normal?

YES

>> GO TO 5.

NO

>> Replace line pressure switch.

5.

CHECK DTC

Perform the self-diagnosis, after driving a vehicle for a while.

Connector

Terminal

Condition

Voltage

(Approx.)

M153

35 -

Ground

• A/T selector lever D

position

4WD shift switch:
AUTO

0V

• Except the above
• The vehicle has

been left at room
temperature for 5
minutes and more
with ignition switch
in OFF position.

• Ignition switch:

ON

• A/T selector le-

ver: P or N posi-
tion

• 4WD shift

switch: other
than AUTO

Battery
voltage

SDIA2751E

Continuity should exist.

SDIA2752E

Terminal

Condition

Continuity

1 -

Ground

Push line pressure switch

Yes

Release line pressure switch

No

2011 Pathfinder