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) present. |
| • | The control module or 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. Be sure to 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:
