Infiniti QX56 (JA60). Manual - part 286

P1824 TRANSFER MOTOR

DLN-67

< COMPONENT DIAGNOSIS >

[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-140, "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-68

< COMPONENT DIAGNOSIS >

[ATX14B]

P1826 TRANSFER FLUID TEMPERATURE

P1826 TRANSFER FLUID TEMPERATURE

Description

INFOID:0000000005148829

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

abnormally low) while driving.

DTC Logic

INFOID:0000000005148830

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-68, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000005148831

Regarding Wiring Diagram information, refer to 

DLN-89, "Wiring Diagram - ALL-MODE 4WD SYSTEM -"

.

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-68

.

Condition

Display value

(Approx.)

Transfer fluid temperature approx. 20 - 80

°C (68 - 176°F)

1.1 - 0.3V

Connector

Terminal

Condition

Data 

(Approx.)

E143

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-69

< COMPONENT DIAGNOSIS >

[ATX14B]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

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 E143 terminal 28 and

transfer terminal cord assembly harness connector F56 terminal

3 .

-

Transfer control unit harness connector E143 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-16, "Component Parts Location"

.

4.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to 

DLN-81, "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-130, "Removal and Installation"

.

Component Inspection

INFOID:0000000005148832

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

DLN-70

< COMPONENT DIAGNOSIS >

[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-16, "Component Parts Loca-

tion"

.

Temperature 

°C (°F)

Resistance (Approx.)

20 (68)

2.5 k

Ω

80 (176)

0.3 k

Ω

WDIA0188E