Symptoms - Transfer Case

Symptoms - Transfer Case

Important: Perform the Transfer Case Diagnostic System Check before using the Symptom Tables in order to verify that all of the following are true:
^ There are no DTCs set.
^ The control module(s) 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 for System Operation.

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
^ Range/Mode Switch Inoperative Range/Mode Switch Inoperative
^ No Correction for Slip in AWD Mode No Correction For Slip In AWD Mode
^ Service Indicator Always On Symptom Related Diagnostic Procedures
^ Service Indicator Inoperative Symptom Related Diagnostic Procedures
^ Transfer Case Shift Control Switch Indicator Lamps Always On - Two or More Transfer Case Shift Control Switch Indicator Lamps Always on
^ Transfer Case Shift Control Switch Indicator Lamps Flash Continuously Transfer Case Control Switch Indicator Lamps Flash Continuously
^ Transfer Case Shift Control Switch Indicator Lamps Inoperative - One or More Transfer Case Shift Control Indicator Lamps Inoperative