Diagnosis Procedure

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

CHECK SYSTEM FOR CAN COMMUNICATION LINE
Perform self-diagnosis. Refer to "CONSULT FUNCTION (ALL MODE AWD/4WD) ".

Do the self-diagnostic results indicate CAN communication?

YES: Perform trouble diagnosis for CAN communication line.

NO: GO TO 2.
CHECK SYSTEM FOR 4WD SHIFT SWITCH
Perform trouble diagnosis for 4WD shift switch system. Refer to "DIAGNOSIS PROCEDURE ".

Are the inspection results normal?

YES: GO TO 3.

NO: Repair or replace damaged parts.
CHECK SYSTEM FOR TRANSMISSION RANGE SWITCH SIGNAL
Perform trouble diagnosis for transmission range switch signal system. Refer to "DIAGNOSIS PROCEDURE ".

Are the inspection results normal?

YES: GO TO 4.

NO: Repair or replace damaged parts.
CHECK SYSTEM FOR ATP SWITCH
Perform trouble diagnosis for ATP switch system. Refer to "DIAGNOSIS PROCEDURE ".

Are the inspection results normal?

YES: GO TO 5.

NO: Repair or replace damaged parts.
SYMPTOM CHECK
Check again.

Are the inspection results normal?

YES: Inspection End.

NO: GO TO 6.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to "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.
CHECK TRANSFER INNER PARTS
1. Disassemble transfer assembly. Refer to "DISASSEMBLY AND ASSEMBLY ".
2. Check transfer inner parts.
  Are the inspection results normal?
  
  YES: Inspection End.
  
  NO: Repair or replace damaged parts.