Infiniti QX56 (JA60). Manual - part 297

4WD SHIFT INDICATOR LAMP KEEPS FLASHING

DLN-111

< SYMPTOM DIAGNOSIS >

[ATX14B]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

4WD SHIFT INDICATOR LAMP KEEPS FLASHING

Description

INFOID:0000000005148865

The 4WD shift indicator lamp keeps flashing.

Diagnosis Procedure

INFOID:0000000005148866

1.

CONFIRM THE SYMPTOM

1. Set 4WD shift switch to 2WD.

2. Move vehicle forward and backward, or drive straight increasing or decreasing under 20 km/h (12 MPH).
Dose 4WD shift indicator lamp keep flashing?

YES

>> GO TO 2.

NO

>> Inspection End.

2.

CHECK SYSTEM FOR WAIT DETECTION SWITCH

Perform trouble diagnosis for wait detection switch system. Refer to 

DLN-36, "Diagnosis Procedure"

.

Are the inspection results normal?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

3.

CHECK SYSTEM FOR NEUTRAL-4LO SWITCH

Perform trouble diagnosis for neutral-4LO switch system. Refer to 

DLN-29, "Diagnosis Procedure"

.

Are the inspection results normal?

YES

>> GO TO 4.

NO

>> Repair or replace damaged parts.

4.

SYMPTOM CHECK

Check again.
Are the inspection results normal?

YES

>> Inspection End.

NO

>> GO TO 5.

5.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to 

DLN-81, "Reference Value"

.

Are the inspection results normal?

YES

>> GO TO 6.

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.

6.

CHECK TRANSFER INNER PARTS

1. Disassemble transfer assembly. Refer to 

DLN-142, "Disassembly and Assembly"

.

2. Check transfer inner parts.
Are the inspection results normal?

YES

>> Inspection End.

NO

>> Repair or replace damaged parts.

DLN-112

< SYMPTOM DIAGNOSIS >

[ATX14B]

4WD WARNING LAMP FLASHES RAPIDLY

4WD WARNING LAMP FLASHES RAPIDLY

Description

INFOID:0000000005148867

The 4WD warning lamp flashes quickly while driving (2 times / second).  The lamp continues to flash until the

ignition switch is turned OFF.

Diagnosis Procedure

INFOID:0000000005148868

1.

CHECK TIRE

Check the following.

• Tire pressure

• Wear condition

• Longitudinal tire size (There is no difference between longitudinal tires.)
Are the inspection results normal?

YES

>> GO TO 2. 

NO

>> Repair or replace damaged parts.

2.

CHECK 4WD WARNING LAMP

Stop the vehicle and allow it to idle for a short period of time.
Does flashing stop?

YES

>> Inspection End. 

NO

>> GO TO 3.

3.

CHECK TRANSFER FLUID TEMPERATURE

Perform trouble diagnosis for transfer fluid temperature system. Refer to 

DLN-68, "Diagnosis Procedure"

.

Are the inspection results normal?

YES

>> GO TO 4.

NO

>> Repair or replace damaged parts.

4.

SYMPTOM CHECK

Check again.
Are the inspection results normal?

YES

>> Inspection End.

NO

>> GO TO 5.

5.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to 

DLN-81, "Reference Value"

.

Are the inspection results normal?

YES

>> Inspection End.

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.

4WD WARNING LAMP FLASHES SLOWLY

DLN-113

< SYMPTOM DIAGNOSIS >

[ATX14B]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

4WD WARNING LAMP FLASHES SLOWLY

Description

INFOID:0000000005148869

The 4WD warning lamp flashes slowly while driving (1 time / 2 seconds).  The lamp continues to flash until the

ignition switch is turned OFF.

Diagnosis Procedure

INFOID:0000000005148870

1.

CHECK TIRE

Check the following.

• Tire pressure

• Wear condition

• Longitudinal tire size (There is no difference between longitudinal tires.)
OK or NG

OK

>> GO TO 2. 

NG

>> Repair or replace damaged parts.

2.

CHECK TRANSFER FLUID TEMPERATURE

Perform trouble diagnosis for transfer fluid temperature system. Refer to 

DLN-68, "Diagnosis Procedure"

.

Are the inspection results normal?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

3.

CHECK CLUTCH PRESSURE SWITCH

Perform trouble diagnosis for clutch pressure switch system. Refer to 

DLN-71, "Diagnosis Procedure"

.

Are the inspection results normal?

YES

>> GO TO 4.

NO

>> Repair or replace damaged parts.

4.

SYMPTOM CHECK

Check again.
Are the inspection results normal?

YES

>> Inspection End.

NO

>> GO TO 5.

5.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to 

DLN-81, "Reference Value"

.

Are the inspection results normal?

YES

>> Inspection End.

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.

DLN-114

< SYMPTOM DIAGNOSIS >

[ATX14B]

HEAVY TIGHT-CORNER BRAKING SYMPTOM OCCURS

HEAVY TIGHT-CORNER BRAKING SYMPTOM OCCURS

Description

INFOID:0000000005148871

This symptom occurs when the vehicle is accelerating in 4WD and the steering wheel is turned fully either

direction.  It may feel like a bump or being pushed from behind.  A small amount of this bumping feeling is

acceptable under certain road conditions.  The transfer case may be adjusted using the CONSULT-III to com-

pensate for this condition.

Diagnosis Procedure

INFOID:0000000005148872

DIAGNOSTIC PROCEDURE

NOTE:

• Light tight-corner braking symptom may occur depending on driving conditions in AUTO mode.  This is not a

malfunction.

• Heavy tight-corner braking symptom occurs when vehicle is driven in the following conditions: 4WD shift

switch is 4H or 4LO, steering wheel is turned fully to either side.

1.

CHECK SYSTEM FOR CAN COMMUNICATION LINE

Perform self-diagnosis.  Refer to 

DLN-18, "CONSULT-III Function (ALL MODE AWD/4WD)"

.

Is CAN COMM CIRCUIT [U1000] displayed?

YES

>> Perform trouble diagnosis for CAN communication line.

NO

>> GO TO 2.

2.

CHECK SYSTEM FOR 4WD SHIFT SWITCH

Perform trouble diagnosis for 4WD shift switch system. Refer to 

DLN-32, "Diagnosis Procedure"

.

Are the inspection results normal?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

3.

CHECK ACCELERATOR PEDAL POSITION SIGNAL CIRCUIT

Perform self diagnosis for ECM.  Refer to 

EC-63, "CONSULT-III Function (ENGINE)"

.

Is any malfunction deteced by self-diagnosis?

YES

>> Check the malfunctioning system.

NO

>> GO TO 4.

4.

CHECK SYSTEM FOR CLUTCH PRESSURE SOLENOID

Perform trouble diagnosis for clutch pressure solenoid system. Refer to 

DLN-71, "Diagnosis Procedure"

.

Are the inspection results normal?

YES

>> GO TO 5.

NO

>> Repair or replace damaged parts.

5.

SYMPTOM CHECK

Check again.
Are the inspection results normal?

YES

>> Inspection End.

NO

>> GO TO 6.

6.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to 

DLN-81, "Reference Value"

.

Are the inspection results normal?

YES

>> GO TO 7.

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.

7.

CHECK TRANSFER INNER PARTS

1. Disassemble transfer assembly. Refer to 

DLN-142, "Disassembly and Assembly"

.

2. Check transfer inner parts.