Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

CONFIRM THE SYMPTOM
1. Set 4WD shift switch to "2WD".
2. Drive the vehicle straight forward and backward keeping speed under 20 km/h (12 MPH).
  Does 4WD shift indicator lamp keep flashing?
  
  YES: GO TO 2.
  
  NO: Inspection End.
CHECK SYSTEM FOR WAIT DETECTION SWITCH
Perform trouble diagnosis for wait detection switch system. Refer to "DIAGNOSIS PROCEDURE ".

Are the inspection results normal?

YES: GO TO 3.

NO: Repair or replace damaged parts.
CHECK SYSTEM FOR 4LO SWITCH
Perform trouble diagnosis for 4LO switch. Refer to "DIAGNOSIS PROCEDURE ".

Are the inspection results normal?

YES: GO TO 4.

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

Does the symptom still occur?

YES: GO TO 5.

NO: Inspection End.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to "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.
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.