Nissan Pathfinder (2008 year). Manual - part 185

DLN-64

< COMPONENT DIAGNOSIS >

[TRANSFER: ATX14B]

P1824 TRANSFER MOTOR

P1824 TRANSFER MOTOR

Description

INFOID:0000000001728388

Motor does not operate properly due to open or short circuit in transfer motor or transfer motor relay.

DTC Logic

INFOID:0000000001728389

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Perform self-diagnosis.

Is DTC P1824 displayed?

YES

>> Perform diagnosis procedure. Refer to 

DLN-64, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000001728390

1.

CHECK TRANSFER MOTOR RELAY 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 “MOTOR RELAY” and “MOTOR RELAY MON”.

DTC

CONSULT-III

Diagnostic item is detected when...

Reference

[P1824]

MOTOR RELAY

Motor does not operate properly due to 
open or short circuit in transfer motor or 
transfer motor relay.

Refer to 

DLN-64

.

Monitored 

item

Condition

Display value

(Approx.)

MOTOR 
RELAY

• Accelerator ped-

al depressed

• Vehicle stopped
• Engine running
• Brake pedal de-

pressed

4WD shift switch: 2WD

OFF

4WD shift switch: AUTO or 
4LO (A/T selector lever “P” or 
“N” position)

OFF
("ON" for ap-
prox. 2 sec. af-
ter shifting to 
“P” and “N”.)

4WD shift switch: AUTO or 
4LO (Except for A/T selector 
lever “P” or “N” position)

ON

4WD shift switch: 4H (A/T se-
lector lever “P” position)

OFF
("ON" for ap-
prox. 2 sec. af-
ter shifting to 
“P”.)

4WD shift switch: 4H (Except 
for A/T selector lever “P” posi-
tion)

ON

P1824 TRANSFER MOTOR

DLN-65

< COMPONENT DIAGNOSIS >

[TRANSFER: ATX14B]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

 Without CONSULT-III

1.

Start engine.

2.

Check voltage between transfer control unit harness connector
terminal and ground.

MOTOR 
RELAY 
MON

• Accelerator ped-

al depressed

• Vehicle stopped
• Engine running
• Brake pedal de-

pressed

4WD shift switch: 2WD

OFF

4WD shift switch: AUTO or 
4LO (A/T selector lever “P” or 
“N” position)

OFF
("ON" for ap-
prox. 2 sec. af-
ter shifting to 
“P” and “N”.)

4WD shift switch: AUTO or 
4LO (Except for A/T selector 
lever “P” or “N” position)

ON

4WD shift switch: 4H (A/T se-
lector lever “P” position)

OFF
("ON" for ap-
prox. 2 sec. af-
ter shifting to 
“P”.)

4WD shift switch: 4H (Except 
for A/T selector lever “P” posi-
tion)

ON

Monitored 

item

Condition

Display value

(Approx.)

Connector

Terminal

Condition

Voltage (Approx.)

M152

 14 - 

Ground

• Accelera-

tor pedal 
depressed

• Vehicle 

stopped

• Engine 

running

• Brake 

pedal de-
pressed

4WD shift switch: 
2WD

Battery voltage

4WD shift switch: 
AUTO or 4LO (A/T 
selector lever “P” or 
“N” position)

Battery voltage
(0V for approx. 2 
sec. after shifting 
to “P” and “N”.)

4WD shift switch: 
AUTO or 4LO (Ex-
cept for A/T selector 
lever “P” or “N” posi-
tion)

0V

4WD shift switch: 4H 
(A/T selector lever 
“P” position)

Battery voltage
(0V for approx. 2 
sec. after shifting 
to “P”.)

4WD shift switch: 4H 
(Except for A/T se-
lector lever “P” posi-
tion)

0V

SDIA2735E

DLN-66

< COMPONENT DIAGNOSIS >

[TRANSFER: ATX14B]

P1824 TRANSFER MOTOR

OK or NG

OK 

>> GO TO 8.

NG

>> GO TO 2.

2.

CHECK TRANSFER MOTOR RELAY POWER SUPPLY CIRCUIT

1.

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

2.

Connect transfer control unit harness connector.

3.

Disconnect transfer motor relay.

4.

Check voltage between transfer motor relay harness connector
terminals and ground.

5.

Turn ignition switch “ON”. (Do not start engine.)

6.

Check voltage between transfer motor relay harness connector
terminals and ground.

OK or NG

OK

>> GO TO 3.

NG

>>

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

• 20A fuse (No. 57, located in the fuse and relay box).
• 10A fuse (No. 59, located in the fuse and relay box).
• Harness for short or open between battery and transfer motor relay harness connector E154 ter-

minals 5.

M153

 41 - 

Ground

• Accelera-

tor pedal 
depressed

• Vehicle 

stopped

• Engine 

running

• Brake 

pedal de-
pressed

4WD shift switch: 
2WD

0V

4WD shift switch: 
AUTO or 4LO (A/T 
selector lever “P” or 
“N” position)

0V
(Battery voltage 
for approx. 2 sec. 
after shifting to “P” 
and “N”.)

4WD shift switch: 
AUTO or 4LO (Ex-
cept for A/T selector 
lever “P” or “N” posi-
tion)

Battery voltage

4WD shift switch: 4H 
(A/T selector lever 
“P” position)

0V
(Battery voltage 
for approx. 2 sec. 
after shifting to 
“P”.)

4WD shift switch: 4H 
(Except for A/T se-
lector lever “P” posi-
tion)

Battery voltage

Connector

Terminal

Condition

Voltage (Approx.)

Connector

Terminal

Voltage (Approx.)

E153

2 - Ground

0V

E154

5 - Ground 

Battery voltage

WDIA0169E

Connector

Terminal

Voltage (Approx.)

E153

2 - Ground

Battery voltage

E154

5 - Ground 

Battery voltage

WDIA0170E

P1824 TRANSFER MOTOR

DLN-67

< COMPONENT DIAGNOSIS >

[TRANSFER: ATX14B]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

• Harness for short or open between transfer shut off relay harness connector E155 terminal 5

and transfer motor relay harness connector E153 terminal 2.

• Battery and ignition switch.

3.

CHECK TRANSFER MOTOR RELAY

1.

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

2.

Remove transfer motor relay. Refer to 

DLN-18, "Component Parts Location"

.

3.

Apply 12V direct current between transfer motor relay terminals
1 and 2.

4.

Check continuity between relay terminals 3 and 5.

OK or NG

OK

>> GO TO 4.

NG

>> Replace the transfer motor relay.

4.

CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND TRANSFER MOTOR RELAY

1.

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

2.

Disconnect transfer control unit harness connector.

3.

Remove transfer motor relay.

4.

Check continuity between the following terminals.

-

Transfer control unit harness connector M152 terminal 14 and
transfer motor relay harness connector E154 terminal 1.

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

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace damaged parts.

5.

CHECK TRANSFER MOTOR POWER SUPPLY CIRCUIT

1.

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

2.

Disconnect transfer control unit harness connector and transfer motor harness connector.

3.

Remove transfer motor relay.

4.

Check continuity between the following terminals.

-

Transfer control unit harness connector M153 terminal 41 and
transfer motor relay harness connector E154 terminal 3.

-

Transfer control unit harness connector M153 terminal 41 and
transfer motor harness connector F57 terminal 14.

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

OK or NG

OK

>> GO TO 6.

NG

>> Repair or replace damaged parts.

6.

CHECK TRANSFER MOTOR GROUND CIRCUIT

1.

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

2.

Disconnect transfer motor harness connector.

Condition

Continuity

12V direct current supply between terminals 1 and 2

Yes

OFF

No

LDIA0098E

Continuity should exist.

SDIA2738E

Continuity should exist.

SDIA3254E

DLN-68

< COMPONENT DIAGNOSIS >

[TRANSFER: ATX14B]

P1824 TRANSFER MOTOR

3.

Check continuity between transfer motor harness connector F57
terminal 15 and ground.

Also check harness for short to power.

 OK or NG

 OK 

>> GO TO 7.

 NG

>> Repair open circuit or short to power in harness or con-

nectors.

7.

CHECK TRANSFER MOTOR

1.

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

2.

Disconnect transfer motor harness connector.

3.

Apply 12V direct current between transfer motor terminals 14
and 15.

Does transfer motor operate?

YES

>> GO TO 8.

NO

>> Replace transfer motor. Refer to 

DLN-147, "Removal

and Installation"

.

8.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to 

DLN-83, "Reference Value"

.

OK or NG

OK

>> GO TO 9.

NG

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

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

9.

CHECK DTC

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

OK or NG

OK

>> Inspection End.

NG

>> Replace transfer control unit. Refer to 

DLN-135, "Removal and Installation"

.

Component Inspection

INFOID:0000000001728391

TRANSFER MOTOR RELAY

1.

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

2.

Remove transfer motor relay. Refer to 

DLN-18, "Component Parts Location"

.

3.

Apply 12V direct current between transfer motor relay terminals
1 and 2.

4.

Check continuity between relay terminals 3 and 5.

5.

If inspection results are abnormal replace transfer motor relay.

TRANSFER MOTOR

Continuity should exist.

SDIA2740E

LDIA0097E

Condition

Continuity

12V direct current supply between terminals 1 and 2

Yes

OFF

No

LDIA0098E

P1824 TRANSFER MOTOR

DLN-69

< COMPONENT DIAGNOSIS >

[TRANSFER: ATX14B]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

1.

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

2.

Remove transfer motor. Refer to 

DLN-147, "Removal and Installation"

.

3.

Apply 12V direct current between transfer motor terminals 14
and 15.

4.

If transfer motor does not operate, replace transfer motor.

LDIA0097E

DLN-70

< COMPONENT DIAGNOSIS >

[TRANSFER: ATX14B]

P1826 TRANSFER FLUID TEMPERATURE

P1826 TRANSFER FLUID TEMPERATURE

Description

INFOID:0000000001728392

Signal voltage from the transfer fluid temperature sensor is abnormally high (Transfer fluid temperature is
abnormally low) while driving.

DTC Logic

INFOID:0000000001728393

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-70, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000001728394

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?

YES 

>> GO TO 4.

NO

>> GO TO 2.

2.

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

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-70

.

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

P1826 TRANSFER FLUID TEMPERATURE

DLN-71

< COMPONENT DIAGNOSIS >

[TRANSFER: ATX14B]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

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-18, "Component Parts Location"

.

4.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to 

DLN-83, "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-135, "Removal and Installation"

.

Component Inspection

INFOID:0000000001728395

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