Important: Perform the
Diagnostic System Check - Vehicle before
using the symptom tables, in order to verify that the following conditions are true:
• There are no diagnostic trouble codes (DTCs) set. • The control module or 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 . |
• | 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. |
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections. Some symptoms may be caused by loose wiring. Be sure to test the system after moving or connecting harnesses, but before replacing parts.
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom: