Important: Review the system operation in order to familiarize yourself with the
system functions. Refer to the following:
|    •  | Transfer Case Description | 
 
|    •  | Transfer Case Circuit Description | 
 
Visual/Physical Inspection
|     •  | Inspect the easily accessible or visible system components for
obvious damage or conditions which could cause the symptom. | 
 
|     •  | Inspect all related ground points for being clean and tight. | 
 
Intermittent
Faulty electrical connections or wiring may be the cause
of intermittent conditions. Refer to 
Testing for Intermittent Conditions and Poor Connections 
 in Wiring Systems.
Symptom List
Refer to a symptom diagnostic procedure from the following list in order
to diagnose the symptom:
|     •  | Four-Wheel-Drive Does Not Disengage | 
 
|     •  | Four-Wheel-Drive Does Not Engage | 
 
|     •  | Four-Wheel-Drive Indicator Does Not Light | 
 
|     •  | Four-Wheel-Drive Indicator Does Not Turn Off |