Infiniti QX56 (Z62). Manual - part 462

DLN-48

< BASIC INSPECTION >

[TRANSFER: ATX90A]

CONFIGURATION (TRANSFER CONTROL UNIT)

CONFIGURATION (TRANSFER CONTROL UNIT)

Description

INFOID:0000000006388779

Perform writing unit parameter after replacing transfer control unit, transfer assembly and transfer control actu-
ator. Refer to 

DLN-48, "Work Procedure"

.

Work Procedure

INFOID:0000000006388780

NOTE:
In fail-safe mode, can not perform work support. (Except that DTC P181F is detected.)

1.

CONFIRM REPLACING PARTS

Confirm the replacing parts.

What is the replacing parts?

Transfer control unit>>GO TO 2.
Transfer control actuator>>GO TO 3.
Transfer assembly>>GO TO 4.

2.

WRITE UNIT PARAMETER (1)

With CONSULT-III

1.

Make the new unit parameter with the following procedure.

-

Confirm the alphabet of unit parameter (A).

NOTE:
•

This illustration is sample.

•

For this illustration, the unit parameter is “G3” and the alpha-
bet of unit parameter is “G”.

-

Confirm the alphabet of transfer control actuator parameter (B).

NOTE:
•

Original transfer control actuator does not have marking of
alphabet.

•

Just in case that transfer control actuator has been replaced, it
has marking of alphabet.

•

This illustration is sample of replaced transfer control actuator.

•

For this illustration, the alphabet of transfer control actuator
parameter is “H”.

-

Make new alphabet of unit palameter as to the alphabets of unit palameter and the transfer control actua-
tor parameter, using following chart.

When the alphabet of transfer control actuator parameter is no marking.

JPDIE0258ZZ

JPDIE0294ZZ

The alphabet of original unit parameter

A

B

C

D

E

F

G

H

J

↓

↓

↓

↓

↓

↓

↓

↓

↓

↓

The new alphabet of unit parameter

A

B

C

D

E

F

G

H

J

CONFIGURATION (TRANSFER CONTROL UNIT)

DLN-49

< BASIC INSPECTION >

[TRANSFER: ATX90A]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

When the alphabet of transfer control actuator parameter is “C”.

When the alphabet of transfer control actuator parameter is “H”.

When the alphabet of transfer control actuator parameter is “N”.

NOTE:
For the sample illustrations, the new alphabet of unit parameter is “F”.

-

Add the same number of unit parameter behind the new alphabet of unit parameter.

NOTE:
For the sample illustration, the number of unit parameter is “3” and new unit parameter is “F3”.

2.

Turn the ignition switch OFF to ON.

3.

Select “UNIT CHARACTERISTICS WRITE” of CONSULT-III “WORK SUPPORT” for “ALL MODE AWD/
4WD”.

4.

Input new unit parameter.

5.

Select “Start”.

6.

Check that "UNIT CHARACTERISTICS WRITE COMPLETED" or "UNIT CHARACTERISTICS WRITE
ALREADY WRITTEN" is displayed.

>> WORK END.

3.

WRITE UNIT PARAMETER (2)

With CONSULT-III

1.

Make the new unit parameter with the following procedure.

-

Confirm the alphabet of unit parameter (A).

NOTE:
•

This illustration is sample.

•

For this illustration, the unit parameter is “G3” and the alpha-
bet of unit parameter is “G”.

-

Confirm the alphabet of transfer control actuator parameter (B).

NOTE:
•

Original transfer control actuator does not have marking of
alphabet.

•

Just in case that transfer control actuator has been replaced, it
has marking of alphabet.

•

This illustration is sample of replaced transfer control actuator.

•

For this illustration, the alphabet of transfer control actuator
parameter is “H”.

The alphabet of original unit parameter

A

B

C

D

E

F

G

H

J

↓

↓

↓

↓

↓

↓

↓

↓

↓

↓

The new alphabet of unit parameter

A

B

C

C

D

E

E

F

G

The alphabet of original unit parameter

A

B

C

D

E

F

G

H

J

↓

↓

↓

↓

↓

↓

↓

↓

↓

↓

The new alphabet of unit parameter

B

C

D

D

E

F

F

G

H

The alphabet of original unit parameter

A

B

C

D

E

F

G

H

J

↓

↓

↓

↓

↓

↓

↓

↓

↓

↓

The new alphabet of unit parameter

C

D

E

E

F

G

G

H

J

JPDIE0258ZZ

JPDIE0294ZZ

DLN-50

< BASIC INSPECTION >

[TRANSFER: ATX90A]

CONFIGURATION (TRANSFER CONTROL UNIT)

-

Make new alphabet of unit palameter as to the alphabets of unit palameter and the transfer control actua-
tor parameter, using following chart.

When the alphabet of transfer control actuator parameter is “C”.

When the alphabet of transfer control actuator parameter is “H”.

When the alphabet of transfer control actuator parameter is “N”.

NOTE:
For the sample illustrations, the new alphabet of unit parameter is “F”.

-

Add the same number of unit parameter behind the new alphabet of unit parameter.

NOTE:
For the sample illustration, the number of unit parameter is “3” and new unit parameter is “F3”.

2.

Turn the ignition switch OFF to ON.

3.

Select “UNIT CHARACTERISTICS WRITE” of CONSULT-III “WORK SUPPORT” for “ALL MODE AWD/
4WD”.

4.

Input new unit parameter.

5.

Select “Start”.

6.

Check that "UNIT CHARACTERISTICS WRITE COMPLETED" or "UNIT CHARACTERISTICS WRITE
ALREADY WRITTEN" is displayed.

>> WORK END.

4.

WRITE UNIT PARAMETER (3)

With CONSULT-III

1.

Confirm the unit parameter (A).
NOTE:
• This illustration is sample.
• For this illustration, the unit parameter is “G3”.

2.

Turn the ignition switch OFF to ON.

3.

Select “UNIT CHARACTERISTICS WRITE” of CONSULT-III
“WORK SUPPORT” for “ALL MODE AWD/4WD”.

4.

Input unit parameter.

5.

Select “Start”.

6.

Check that "UNIT CHARACTERISTICS WRITE COMPLETED"
or "UNIT CHARACTERISTICS WRITE ALREADY WRITTEN" is
displayed.

>> WORK END.

The alphabet of original unit parameter

A

B

C

D

E

F

G

H

J

↓

↓

↓

↓

↓

↓

↓

↓

↓

↓

The new alphabet of unit parameter

A

B

C

C

D

E

E

F

G

The alphabet of original unit parameter

A

B

C

D

E

F

G

H

J

↓

↓

↓

↓

↓

↓

↓

↓

↓

↓

The new alphabet of unit parameter

B

C

D

D

E

F

F

G

H

The alphabet of original unit parameter

A

B

C

D

E

F

G

H

J

↓

↓

↓

↓

↓

↓

↓

↓

↓

↓

The new alphabet of unit parameter

C

D

E

E

F

G

G

H

J

JPDIE0258ZZ

P1802, P1803, P1804, P1809 TRANSFER CONTROL UNIT

DLN-51

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX90A]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

DTC/CIRCUIT DIAGNOSIS

P1802, P1803, P1804, P1809 TRANSFER CONTROL UNIT

DTC Logic

INFOID:0000000006222244

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

With CONSULT-III

1.

Turn the ignition switch OFF to ON.

2.

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

Are DTC

′

s “P1802, P1803, P1804 or P1809” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

DLN-51, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006222245

1.

PERFORM SELF-DIAGNOSIS

With CONSULT-III

1.

Erase self-diagnostic results for “ALL MODE AWD/4WD”.

2.

Turn the ignition switch OFF, and then wait 10 seconds and more.

3.

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

Are DTC

′

s “P1802, P1803, P1804 or 1809” detected?

YES

>> Replace transfer control unit. Refer to 

DLN-107, "Removal and Installation"

.

NO

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

If any items are damaged, repair or replace error-detected parts.

DTC

Display item

Malfunction detected condition

Possible cause

P1802

CONTROL UNIT 1

Malfunction is detected in the memory 
(RAM) system of transfer control unit.

Internal malfunction of transfer control 
unit.

P1803

CONTROL UNIT 2

Malfunction is detected in the memory 
(ROM) system of transfer control unit.

P1804

CONTROL UNIT 3

Malfunction is detected in the memory 
(EEOROM) system of transfer control 
unit.

P1809

CONTROL UNIT 4

AD converter system of transfer control 
unit is malfunctioning.