Symptoms - Transfer Case

Symptoms - Transfer Case

Important:
* Perform the Diagnostic System Check - Vehicle before using the symptom tables in order to verify the following statements are true:


- There are no diagnostic trouble codes (DTCs) set.

- The control modules can communicate via the serial data link.


* Review the system operation in order to familiarize yourself with the system functions. Refer to Transfer Case Description and Operation (Transfer Case Description and Operation) .





Visual/Physical Inspection

* Inspect for aftermarket devices which could affect the operation of the automatic transfer case system. Refer to Checking Aftermarket Accessories .
* Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
* Inspect the automatic transfer case for the proper fluid level.



Intermittent

Faulty electrical connections or wiring may cause intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .


Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

* Front Axle Will Not Engage (Front Axle Will Not Engage)
* Front Axle Will Not Disengage (Front Axle Will Not Disengage)
* Transfer Case Shift Control Switch Inoperative (Transfer Case Shift Control Switch Inoperative)
* No Correction for Slip in AWD Mode ()
* Transfer Case Shift Control Switch Indicator Always On - Two or More (Transfer Case Shift Control Switch Indicator Always On - Two or More)
* Transfer Case Shift Control Switch Indicator Inoperative - One or More (Transfer Case Shift Control Switch Indicator Inoperative - One or More)
* Service Indicator Always On (Service Indicator Always On)
* Transfer Case High/Low Clutch Reset (Transfer Case High/Low Clutch Reset)
* Transfer Case Popping Noise (Transfer Case Popping Noise)
* Transfer Case Whine or Rumble Noise (Transfer Case Whine or Rumble Noise)
* Transfer Case Growl or Grinding Noise (Transfer Case Growl or Grinding Noise)
* Transfer Case Grating Noise (Transfer Case Grating Noise)
* Transfer Case Clunk in 2HI Only (Transfer Case Clunk in 2HI Only)
* Transfer Case Clunk in 4HI (Transfer Case Clunk in 4HI)
* Transfer Case Clunk in 4LO (Transfer Case Clunk in 4LO)
* Transfer Case Clunk during Acceleration and Deceleration (Transfer Case Clunk during Acceleration and Deceleration)
* Transfer Case Shudder or Binding (Transfer Case Shudder or Binding)
* Transfer Case Will Not Shift (Transfer Case Will Not Shift)
* Transfer Case Jumps Out of Gear (Transfer Case Jumps Out of Gear)
* Transfer Case Leak Diagnosis (Component Tests and General Diagnostics)