Important: Perform the
Diagnostic System Check - Vehicle
before using the symptom tables, in order to verify the following conditions are true:
| • | There are no diagnostic trouble codes (DTCs) present. |
| • | The control modules can communicate via the serial data link. |
| • | 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
Testing for Intermittent Conditions and Poor Connections
. Some symptoms may be caused by loose wiring. Test the system
after moving or connecting harnesses, but before replacing parts.
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
