Symptoms

Symptoms - Transfer Case

Important:
^ Perform the Diagnostic System Check - Transfer Case before using the symptom tables in order to verify that the following statements are true:
- No Diagnostic Trouble Codes (DTCs) are set.
- The control modules can communicate via the serial data link.
^ Review the system operation in order to familiarize yourself with the system functions.

Visual/Physical Inspection
^ Inspect for aftermarket devices which could affect the operation of the automatic transfer case system.
^ 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 be the cause of intermittent conditions.

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
^ Accessory Switch Transfer Case Mode Buttons Inoperative Accessory Switch Transfer Case Mode Buttons Inoperative
^ Service 4WD Indicator Always On Service 4WD Indicator Always on
^ Service 4WD Indicator Inoperative Service 4WD Indicator Inoperative
^ Accessory Switch Transfer Case Mode Indicator Always On - Two or More Always on - Two or More
^ Accessory Switch Transfer Case Mode Indicator Flashes, then Returns to Previous Mode Flashes, Then Returns to Previous Mode
^ Accessory Switch Transfer Case Mode Indicator Inoperative - One or More Inoperative - One or More
^ Accessory Switch Transfer Case Mode Indicator Flashes in 2WD ModeFlashes In 2WD Mode
^ Accessory Switch Transfer Case Mode Indicator Flashes in 4WD High or 4WD Low Mode Flashes In 4WD High or 4WD Low Mode
^ Accessory Switch Transfer Case Mode Indicator Flashes in 4WD High, 4WD Low, and 2WD Modes Flashes In 4WD High, 4WD Low, and 2WD Modes
^ Accessory Switch Transfer Case Mode Indicator Flashes in Neutral Mode Flashes In Neutral Mode
^ Transfer Case Will Not Shift Transfer Case Will Not Shift
^ 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 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 Shudder or Binding Transfer Case Shudder or Binding
^ Transfer Case Jumps Out of Gear Transfer Case Jumps Out of Gear