Infiniti QX56 (Z62). Manual - part 464

DLN-56

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX90A]

P180C SENSOR POWER SUPPLY (5V)

4.

Check the continuity between transfer rotary position sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace error-detected parts.

6.

CHECK TRANSFER ROTARY POSITION SENSOR POWER SUPPLY (2)

1.

Turn the ignition switch OFF.

2.

Connect transfer lock position sensor harness connector.

3.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

4.

Check the voltage between transfer rotary position sensor harness connector terminals.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace transfer rotary position sensor. Refer to 

DLN-117, "Removal and Installation"

.

7.

CHECK TERMINALS AND HARNESS CONNECTORS

Check the pin terminals for damage or loose connection with each harness connector.

Is the inspection result normal?

YES

>> Replace transfer control unit. Refer to 

DLN-107, "Removal and Installation"

.

NO

>> Repair or replace error-detected parts.

Transfer control unit

Transfer rotary position sensor

Continuity

Connector

Terminal

Connector

Terminal

E59

18

F41

1

Existed

16

2

Transfer rotary position sensor

—

Continuity

Connector

Terminal

F41

1

Ground

Not existed

+

−

Voltage

Transfer rotary position sensor

Connector

Terminal

F41

1

2

Approx. 5 V

P180D TRANSFER ROTARY POSITION SENSOR

DLN-57

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX90A]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

P180D TRANSFER ROTARY POSITION SENSOR

DTC Logic

INFOID:0000000006222253

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

With CONSULT-III

1.

Turn the ignition switch OFF to ON.

2.

Turn the 4WD shift switch AUTO

⇒

4H

⇒

4LO

⇒

4H

⇒

AUTO.

3.

Perform self-diagnosis for “ALL MODE AWD/4WD”.

Is DTC “P180D” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

DLN-57, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006222254

1.

CHECK TRANSFER ROTARY POSITION SENSOR SIGNAL

1.

Turn the ignition switch ON.

2.

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

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 2.

2.

CHECK TRANSFER ROTARY POSITION SENSOR POWER SUPPLY

1.

Turn the ignition switch OFF.

2.

Disconnect transfer rotary position sensor harness connector.

3.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

4.

Check the voltage between transfer rotary position sensor harness connector terminals.

DTC

Display item

Malfunction detected condition

Possible cause

P180D

ROTARY POSITION SEN

Malfunction is detected in transfer rotary 
position sensor.

Transfer rotary position sensor
• Transfer rotary position sensor error
• Transfer rotary position sensor circuit 

error

+

−

Voltage

Transfer control unit

Connector

Terminal

E59

15

Ground

JPDIE0268GB

+

−

Voltage

Transfer rotary position sensor

Connector

Terminal

F41

1

2

Approx. 5 V

DLN-58

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX90A]

P180D TRANSFER ROTARY POSITION SENSOR

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

CHECK TRANSFER ROTARY POSITION SENSOR CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect transfer control unit harness connector.

3.

Check the continuity between transfer control unit harness connector and transfer rotary position sensor
harness connector.

4.

Check the continuity between transfer rotary position sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

4.

CHECK TRANSFER ROTARY POSITION SENSOR SIGNAL CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect transfer control unit harness connector.

3.

Check the continuity between transfer control unit harness connector and transfer rotary position sensor
harness connector.

4.

Check the continuity between transfer rotary position sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

REPLACE TRANSFER ROTARY POSITION SENSOR

1.

Replace transfer rotary position sensor. Refer to 

DLN-117, "Removal and Installation"

.

2.

Perform confirmation procedure again. Refer to 

DLN-57, "DTC Logic"

.

Is DTC “P180D” detected?

YES

>> GO TO 6.

NO

>> INSPECTION END

6.

CHECK TERMINALS AND HARNESS CONNECTORS

Check the pin terminals for damage or loose connection with each harness connector.

Is the inspection result normal?

YES

>> Replace transfer control unit. Refer to 

DLN-107, "Removal and Installation"

.

NO

>> Repair or replace error-detected parts.

Transfer control unit

Transfer rotary position sensor

Continuity

Connector

Terminal

Connector

Terminal

E59

18

F41

1

Existed

16

2

Transfer rotary position sensor

—

Continuity

Connector

Terminal

F41

1

Ground

Not existed

Transfer control unit

Transfer rotary position sensor

Continuity

Connector

Terminal

Connector

Terminal

E59

15

F41

3

Existed

Transfer rotary position sensor

—

Continuity

Connector

Terminal

F41

3

Ground

Not existed

P180E SENSOR POWER SUPPLY (8V)

DLN-59

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX90A]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

P180E SENSOR POWER SUPPLY (8V)

Description

INFOID:0000000006222255

Supplies power (8V) to transfer internal speed sensor.

DTC Logic

INFOID:0000000006222256

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

With CONSULT-III

1.

Turn the ignition switch ON.

2.

Perform self-diagnosis for “ALL MODE AWD/4WD”.

Is DTC “P180E” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

DLN-59, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006222257

1.

CHECK TRANSFER INTERNAL SPEED SENSOR POWER SUPPLY (1)

1.

Turn the ignition switch OFF.

2.

Disconnect transfer control actuator harness connector.

3.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

4.

Check the voltage between transfer control actuator harness connector terminals.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK TRANSFER INTERNAL SPEED SENSOR CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect transfer control unit harness connector.

3.

Check the continuity between transfer control unit harness connector and transfer control actuator har-
ness connector.

4.

Check the continuity between transfer control actuator harness connector and ground.

DTC

Display item

Malfunction detected condition

Possible cause

P180E

SEN POWER SUPPLY (8V)

When the sensor power supply (8V) volt-
age is lower or higher than normal.

Malfunction of transfer internal speed 
sensor power supply circuit (open or 
short)

+

−

Voltage

Transfer control actuator

Connector

Terminal

F52

3

7

Approx. 8 V

Transfer control unit

Transfer control actuator

Continuity

Connector

Terminal

Connector

Terminal

E59

39

F52

3

Existed

9

7