Infiniti QX56 (Z62). Manual - part 467

 

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Infiniti QX56 (Z62). Manual - part 467

 

 

DLN-68

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX90A]

P1813 4WD MODE SWITCH

3.

CHECK 4WD SHIFT SWITCH CIRCUIT (2)

Check the continuity between 4WD switch assembly harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK TERMINALS AND HARNESS CONNECTORS

• Check transfer control unit pin terminals for damage or loose connection with harness connector.
• Check 4WD switch assembly pin terminals for damage or loose connection with 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.

Component Inspection

INFOID:0000000006222265

1.

CHECK 4WD SHIFT SWITCH

1.

Turn the ignition switch OFF.

2.

Remove 4WD switch assembly. Refer to 

DLN-108, "Removal and Installation"

.

3.

Check the continuity between 4WD switch assembly harness connector terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace 4WD switch assembly. Refer to 

DLN-108, "Removal and Installation"

.

4WD switch assembly

Continuity

Connector

Terminal

M54

11

Ground

Not existed

10

9

4WD switch assembly

Condition

Continuity

Terminal

12

9

4WD shift switch: AUTO

Existed

4WD shift switch: 4H or 4L

Not existed

12

10

4WD shift switch: 4H

Existed

4WD shift switch: AUTO or 4L

Not existed

12

11

4WD shift switch: 4L

Existed

4WD shift switch: AUTO or 4H

Not existed

P1816 PARKING/NEUTRAL POSITION SWITCH

DLN-69

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX90A]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

P1816 PARKING/NEUTRAL POSITION SWITCH

DTC Logic

INFOID:0000000006222266

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

With CONSULT-III

1.

Turn the ignition switch OFF to ON.

2.

Shift the A/T shift selector P position.

3.

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

Is DTC “P1816” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

DLN-69, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006222267

1.

PERFORM TCM SELF-DIAGNOSIS

With CONSULT-III

Perform self-diagnosis for “TRANSMISSION”.

Is any DTCs detected?

YES

>> Check the DTC.

NO

>> GO TO 2.

2.

ERASE SELF-DIAGNOSTIC RESULT

With CONSULT-III

1.

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

2.

Start the engine and drive vehicle at 30 km/h (19 MPH) or more.

3.

Check that A/T CHECK indictor lamp turns OFF.

Does A/T CHECK indicator lamp turn OFF?

YES

>> GO TO 3.

NO

>> Refer to 

TM-165, "Symptom Table"

.

3.

CHECK TERMINALS AND HARNESS CONNECTORS

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

Is inspection result normal?

YES

>> After turning the ignition switch OFF, perform DTC confirmation procedure again. When DTC

"P1816" is detected, Replace transfer control unit. Refer to 

DLN-107, "Removal and Installation"

.

NO

>> Repair or replace error-detected parts.

DTC

Display item

Malfunction detected condition

Possible cause

P1816

PNP SW/CIRC

Malfunction is detected in PNP switch 
signal that is output from TCM through 
CAN communication

• Harness or connector (CAN communi-

cation line)

• TCM
-  Internal malfunction of TCM
- A/T shift selector error

DLN-70

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX90A]

P1817 TRANSFER MOTOR

P1817 TRANSFER MOTOR

DTC Logic

INFOID:0000000006222268

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 “P1817” detected?

YES

>> Proceed to diagnosis procedure. Refer to 

DLN-70, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006222269

1.

CHECK TRANSFER MOTOR CIRCUIT (1)

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 unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK TRANSFER MOTOR

Check the transfer control actuator. Refer to 

DLN-71, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Transfer motor is malfunctioning. Replace transfer control actuator. Refer to 

DLN-114, "Removal

and Installation"

.

3.

CHECK TRANSFER INTERNAL FUNCTION

With CONSULT-III

1.

Remove transfer control actuator. Refer to 

DLN-114, "Removal and Installation"

.

DTC

Display item

Malfunction detected condition

Possible cause

P1817

SHIFT ACTUATOR

Malfunction is detected in transfer motor.

Transfer control actuator
• Transfer motor error
• malfunction of transfer motor circuit

Transfer control unit

Transfer control actuator

Continuity

Connector

Terminal

Connector

Terminal

E60

45

F52

8

Existed

43

1

Transfer control unit

Continuity

Connector

Terminal

E60

45

Ground

Not existed

43

P1817 TRANSFER MOTOR

DLN-71

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX90A]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

2.

Turn the actuator shaft. Refer to 

DLN-114, "Inspection"

.

3.

Check “ROTARY POSI SEN” of CONSULT-III “DATA MONITOR” for “ALL MODE AWD/4WD”.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Transfer assembly is mechanical malfunction. Replace transfer assembly. Refer to 

DLN-121,

"Removal and Installation"

.

4.

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.

Component Inspection

INFOID:0000000006222270

1.

CHECK TRANSFER MOTOR

1.

Remove transfer control actuator. Refer to 

DLN-114, "Exploded View"

.

2.

Apply 12 V to transfer control actuator connector No. 1 terminal and No. 8 terminal.

CAUTION:

• Never make the terminals short.
• Connect the fuse between the terminals when applying the voltage.

3.

Check the operation of transfer control actuator.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace transfer control actuator. Refer to 

DLN-114, "Exploded View"

.

Monitor item

Condition

Status

ROTARY POSI SEN

Turn the actuator shaft.

Value is changing

Transfer control actuator

Condition

Operation

Terminal

1

8

Apply the voltage between No. 1 (+) 
terminal and No. 8 (

) terminal.

Operate clockwise

Apply the voltage between No. 1 (

terminal and No. 8 (+) terminal.

Operate counter-

clockwise

 

 

 

 

 

 

 

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