For 1990-2009 cars only
Important: Review the system operations in order to familiarize yourself with the system functions. Refer to Two Speed Rear Axle Shift System Description and Operation and Locking Differential Description and Operation .
Visual/Physical Inspection
| • | Inspect for aftermarket devices which could affect the operation of the Rear Axle Control System. Refer to Checking Aftermarket Accessories. |
| • | Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom. |
| • | Inspect the rear axle for the proper fluid level. |
Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Always check wiring connections and retest the suspect circuit before replacing components. Refer to Testing for Intermittent Conditions and Poor Connections.
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
