Diagnosis By Symptom

Symptoms - Transfer Case

Important: The following steps must be completed before using the symptom tables.

1. Perform the Diagnostic System Check - Transfer Case before using the Symptom Tables in order to verify that all of the following are true:
^ DTCs are not set.
^ The control modules can communicate via the serial data link.
2. 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 cape system.
^ Inspect the easily accessible, or the 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:
^ Transfer Case Shift Control Switch Inoperative or 4 Low Indicator Stuck On
^ Transfer Case Shift Control Switch Indicator Always On - Two or More
^ Transfer Case Ship Control Switch Indicator Inoperative - One or More
^ Transfer Case Shift Control Switch Indicator Flashes and Returns to Original Mode
^ Transfer Case Popping Noise
^ Transfer Case Whine or Rumble Noise
^ Transfer Case Growl or Grinding Noise
^ Transfer Case Clunk in 2HI Only
^ Transfer Case Clunk in 4HI
^ Transfer Case Clunk in 4LO
^ Transfer Case Shudder or Binding
^ Transfer Case Will Not Shift
^ Transfer Case Jumps Out of Gear
^ Transfer Case Leak Diagnosis
^ Transfer Case Will Not Complete a Mode or Range Shift