Important: The following steps must be completed before using the symptom tables.
- Perform the
Diagnostic System Check
before using the Symptom Tables in order to verify that all of the following are true:
| • | 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:
Visual/Physical Inspection
| • | Inspect for aftermarket devices which could affect the operation of the automatic transfer case system. Refer to
Checking Aftermarket Accessories
in Wiring Systems. |
| • | 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. Refer to
Intermittents and Poor Connections Diagnosis
in Wiring Systems.
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
