Diagnosis Procedure

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

Vehicle does not enter 4-wheel drive mode even though AWD warning icon/display is not displayed.

CHECK AWD WARNING ICON/DISPLAY
Perform the trouble diagnosis of the AWD warning icon/display. Refer to Diagnosis Procedure .

Is the inspection result normal?

YES

GO TO 2.

NO

Repair or replace the error-detected parts.

CHECK PARKING BRAKE SWITCH SIGNAL

With CONSULT

Check "P BRAKE SW" of CONSULT "DATA MONITOR" for "ALL MODE AWD/4WD".

Monitor Item	Condition	Status
P BRAKE SW	When the parking brake pedal is operation.	On
P BRAKE SW	When the parking brake pedal is not operation.	Off

Is the inspection result normal?

YES

GO TO 3.

Proceed to Diagnosis Procedure (Type 1) or Diagnosis Procedure (Type 2).

CRUISE TEST
Drive the vehicle for a period of time.

Does any symptom occur?

YES

Replace electric controlled coupling for mechanical malfunction (mechanical engagement of clutch is not possible). Refer to Removal and Installation .

NO

Check each harness connector pin terminal for disconnection.